Associate Professor Penny Back staff profile picture

Contact details +6469518194

Associate Professor Penny Back

Associate Professor

Doctoral Supervisor
School of Agriculture and Environment

Completed a B Agr Sc degree (Massey, 1989) and then a PhD in lactational physiology (1991) in conjunction with Massey and AgResearch investigating a hormone and nutritional interaction in milk protein synthesis. More recently I have worked on studies manipulating milk components through breed differences and feeding, and the production of hyper-immune milk. Currently my research focuses on how uterine infection influences ovarian follicle dynamics, and the maternal effects of aging on ovarian follicle dynamics.

More about me...View less...

Research Expertise

Research Interests

Ruminant milk production

Heifer rearing

Young stock rearing

Young stock rearing on alternative forages

Improving reproductive performance

Chicory

Plantain

Lucerne

Use of alternative forages

Dairy and beef cow milk composition

Efficiency of liveweight gain

Economic evaluation of farm practises

Thematics

21st Century Citizenship, Resource Development and Management, Health and Well-being, Future Food Systems

Area of Expertise

Field of research codes
Agricultural And Veterinary Sciences (070000): Animal Breeding (070201): Animal Growth and Development (070202): Animal Management (070203): Animal Nutrition (070204): Animal Production (070200): Animal Reproduction (070206): Humane Animal Treatment (070207)

Keywords

Ruminant milk production

Heifer rearing

Young stock rearing

Young stock rearing on alternative forages

Improving reproductive performance

Chicory

Plantain

Lucerne

Use of alternative forages

Dairy and beef cow milk composition

Efficiency of liveweight gain

Economic evaluation of farm practises

 

Research Outputs

Journal

Wehrle-Martinez, A., Lawrence, KE., Back, PJ., Rogers, CW., & Dittmer, KE. (2024). Farm management and husbandry practices associated with spontaneous humeral fractures in New Zealand dairy heifers. New Zealand Veterinary Journal. 72(2), 96-102
[Journal article]Authored by: Back, P., Dittmer, K., Lawrence, K., Rogers, C., Wehrle Martinez, A.
Chin, YY., Back, PJ., Gee, EK., Horne, DJ., & Rogers, CW. (2023). Quantification of relative stock units for horses to permit correct application within pasture-based production systems. Animal Production Science. 64(1)
[Journal article]Authored by: Back, P., Gee, E., Rogers, C.
Wehrle-Martinez, A., Waterland, MR., Naffa, R., Lawrence, K., Back, PJ., Rogers, CW., . . . Dittmer, K. (2023). Bone quality changes as measured by Raman and FTIR spectroscopy in primiparous cows with humeral fracture from New Zealand. Frontiers in Veterinary Science. 10
[Journal article]Authored by: Back, P., Dittmer, K., Lawrence, K., Rogers, C., Waterland, M., Wehrle Martinez, A.
Wehrle-Martinez, A., Dittmer, KE., Back, PJ., Rogers, CW., & Lawrence, K. (2023). Biochemical profile of heifers with spontaneous humeral fractures suggest that protein-energy malnutrition could be an important factor in the pathology of this disease. New Zealand Veterinary Journal. 71(1), 37-41
[Journal article]Authored by: Back, P., Dittmer, K., Lawrence, K., Rogers, C., Wehrle Martinez, A.
Wehrle-Martinez, A., Lawrence, K., Back, PJ., Rogers, CW., Gibson, M., & Dittmer, KE. (2023). Osteoporosis is the cause of spontaneous humeral fracture in dairy cows from New Zealand. Veterinary Pathology. 60(1), 88-100
[Journal article]Authored by: Back, P., Dittmer, K., Gibson, M., Lawrence, K., Rogers, C., Wehrle Martinez, A.
Gibson, MJ., Adams, BR., Back, PJ., Dittmer, KE., Herath, HMGP., Pain, SJ., . . . Rogers, CW. (2022). Increased Dietary Protein to Energy Ratio in Pre-Weaning Lambs Increases Average Daily Gain and Cortical Bone Thickness in the Tibia. Ruminants. 2(4), 478-486
[Journal article]Authored by: Back, P., Blair, H., Dittmer, K., Gibson, M., Kenyon, P., Morel, P., Pain, S., Rogers, C.
Coleman, L., Martín, N., Back, P., Blair, H., López-Villalobos, N., & Hickson, R. (2022). Low Birthweight Beef Bulls Compared with Jersey Bulls Do Not Impact First Lactation and Rebreeding of First-Calving Dairy Heifers—A Case Study in New Zealand. Dairy. 3(1), 87-97
[Journal article]Authored by: Back, P., Blair, H., Lopez-Villalobos, N., Martin, N.
Gibson, MJ., Adams, BR., Back, PJ., Hickson, RE., Dittmer, KE., & Rogers, CW. (2022). Live Weight and Bone Growth from Birth to 23 Months of Age in Holstein–Friesian, Jersey and Crossbred Heifers. Dairy. 3(2), 333-344
[Journal article]Authored by: Back, P., Dittmer, K., Gibson, M., Rogers, C.
Wehrle-Martinez, A., Naffa, R., Back, P., Rogers, CW., Lawrence, K., Loo, T., . . . Dittmer, K. (2022). Novel Assessment of Collagen and Its Crosslink Content in the Humerus from Primiparous Dairy Cows with Spontaneous Humeral Fractures Due to Osteoporosis from New Zealand. Biology. 11(10)
[Journal article]Authored by: Back, P., Dittmer, K., Lawrence, K., Rogers, C., Sutherland-Smith, A., Wehrle Martinez, A.
Muktasam, A., Dahlanuddin, ., Putra, RA., Sriasih, M., Taufik Fauzi, M., Parta Tanaya, IGL., . . . Morris, ST. (2022). ADOPTION OF A LEUCAENA-BASED CATTLE FATTENING SYSTEM IN THE DOMPU DISTRICT OF NUSA TENGGARA BARAT, INDONESIA. Asian Journal of Agriculture and Rural Development. 12(2), 82-90
[Journal article]Authored by: Anderson, C., Back, P., Morris, S., Reid, J.
Coleman, L., Back, P., Blair, H., López-Villalobos, N., & Hickson, R. (2021). Sire Effects on Birth Weight, Gestation Length, and Pre-Weaning Growth of Beef-Cross-Dairy Calves: A Case Study in New Zealand. Dairy. 2(3), 385-395
[Journal article]Authored by: Back, P., Blair, H., Lopez-Villalobos, N.
Coleman, L., Back, P., Blair, H., López-Villalobos, N., & Hickson, R. (2021). Service Sire Effects on Body Condition Score, Milk Production, and Rebreeding of Mixed-Aged Dairy Cows Bred to Angus and Hereford Bulls—A Case Study in New Zealand. Dairy. 2(4), 637-648
[Journal article]Authored by: Back, P., Blair, H., Lopez-Villalobos, N.
Martín, N., Coleman, L., López-Villalobos, N., Schreurs, N., Morris, S., Blair, H., . . . Hickson, R. (2021). Estimated Breeding Values of Beef Sires Can Predict Performance of Beef-Cross-Dairy Progeny. Frontiers in Genetics. 12
[Journal article]Authored by: Back, P., Blair, H., Lopez-Villalobos, N., Martin, N., Morris, S., Schreurs, N.
Handcock, RC., Lopez-Villalobos, N., Back, PJ., Hickson, RE., & McNaughton, LR. (2021). Growth, milk production, reproductive performance, and stayability of dairy heifers born from 2-year-old or mixed-age dams. Journal of Dairy Science. 104(11), 11738-11746
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Gibson, M., Hickson, R., Back, P., Dittmer, K., Schreurs, N., & Rogers, C. (2021). The effect of sex and age on bone morphology and strength in the metacarpus and humerus in beef-cross-dairy cattle. Animals. 11(3), 1-10
[Journal article]Authored by: Back, P., Dittmer, K., Gibson, M., Rogers, C., Schreurs, N.
Handcock, RC., Jenkinson, CMC., Laven, R., McNaughton, LR., Lopez-Villalobos, N., Back, PJ., . . . Hickson, RE. (2021). Linear versus seasonal growth of dairy heifers decreased age at puberty but did not affect first lactation milk production. New Zealand Journal of Agricultural Research. 64(1), 83-100 Retrieved from https://www.tandfonline.com/doi/full/10.1080/00288233.2019.1607404
[Journal article]Authored by: Back, P., Jenkinson, C., Laven, R., Lopez-Villalobos, N.
Gibson, M., Dittmer, K., Hickson, R., Back, P., & Rogers, C. (2020). Bone morphology and strength in the mid-diaphysis of the humerus and metacarpus in dairy calves prior to weaning. Animals. 10(8), 1-10
[Journal article]Authored by: Back, P., Dittmer, K., Gibson, M., Rogers, C.
Gardner, RR., Lopez-Villalobos, N., Back, PJ., & McNaughton, LR. (2020). The milk production and survival of spring-calving carryover cows in New Zealand. New Zealand Journal of Agricultural Research. 63(4), 479-491
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Chin, YY., Roca Fraga, FJ., Back, PJ., Gee, EK., & Rogers, CW. (2020). The dynamics of energy supply and demand of foaling mares managed at pasture: A deterministic modelling approach. Animal Production Science. 60(18), 2122-2130
[Journal article]Authored by: Back, P., Gee, E., Roca Fraga, F., Rogers, C.
Handcock, RC., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2020). Increased yearling weight as a proportion of 21-month weight was associated with increased milk production in dairy heifers. New Zealand Veterinary Journal. 68(5), 272-282
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Handcock, RC., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2020). Body weight of dairy heifers is positively associated with reproduction and stayability. Journal of Dairy Science. 103(5), 4466-4474
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Dahlanuddin, ., Yanuarianto, O., Fauzi, T., Back, PJ., Hickson, R., Morris, ST., . . . Anderson, CWN. (2019). Feed intake, rumen fermentation, digestibility and live weight gain of male Bali cattle (Bos javanicus) fed different mixtures of Gliricidia sepium and Leucaena leucocephala. Livestock Research for Rural Development. 31(9)
[Journal article]Authored by: Anderson, C., Back, P., Morris, S., Reid, J.
Handcock, RC., Jenkinson, CMC., Laven, R., McNaughton, LR., Lopez-Villalobos, N., Back, PJ., . . . Hickson, RE. (2021). Linear versus seasonal growth of dairy heifers decreased age at puberty but did not affect first lactation milk production. New Zealand Journal of Agricultural Research. 64(1), 83-100
[Journal article]Authored by: Back, P., Jenkinson, C., Laven, R., Lopez-Villalobos, N.
Handcock, RC., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2019). Positive relationships between body weight of dairy heifers and their first-lactation and accumulated three-parity lactation production. Journal of Dairy Science. 102(5), 4577-4589
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Martín, NP., Hickson, RE., de Clifford, RP., Tulley, W., Lopez-Villalobos, N., & Back, PJ. (2020). Production benefits from meeting liveweight targets in dairy heifers. New Zealand Journal of Agricultural Research. 63(2), 220-232
[Journal article]Authored by: Back, P., Lopez-Villalobos, N., Martin, N.
Handcock, RC., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2019). Live weight and growth of Holstein-Friesian, Jersey and crossbred dairy heifers in New Zealand. New Zealand Journal of Agricultural Research. 62(2), 173-183
[Journal article]Authored by: Back, P., Lopez-Villalobos, N.
Pettigrew, EJ., Morris, ST., Back, PJ., Kenyon, PR., Berry, J., Donald, AJ., . . . Hickson, RE. (2017). Growth of weaned Friesian bull calves on a herb sward or with concentrate supplementation during late summer and early autumn. New Zealand Journal of Agricultural Research. 60(1), 70-79
[Journal article]Authored by: Back, P., Kenyon, P., Morris, S.
Navarrete, S., Kemp, PD., Pain, SJ., & Back, PJ. (2016). Bioactive compounds, aucubin and acteoside, in plantain (Plantago lanceolata L.) and their effect on in vitro rumen fermentation. Animal Feed Science and Technology. 222, 158-167
[Journal article]Authored by: Back, P., Pain, S.
Hickson, RE., Back, PJ., Martin, NP., Kenyon, PR., & Morris, ST. (2016). The influence of age and breed of cow on colostrum indicators of suckled beef calves. Proceedings of the New Zealand Society of Animal Production. 76, 163-168
[Journal article]Authored by: Back, P., Kenyon, P., Martin, N., Morris, S.
Corner-Thomas, RA., Hickson, RE., Morris, ST., Back, PJ., Ridler, AL., Stafford, KJ., . . . Kenyon, PR. (2015). Effects of body condition score and nutrition in lactation on twin-bearing ewe and lamb performance to weaning. New Zealand Journal of Agricultural Research. 58(2), 156-169
[Journal article]Authored by: Back, P., Corner-Thomas, R., Kenyon, P., Morris, S., Ridler, A.
Corner-Thomas, RA., Hickson, RE., Morris, ST., Back, PJ., Ridler, AL., Stafford, KJ., . . . Kenyon, PR. (2015). Effects of body condition score and nutrition in lactation on twin-bearing ewe and lamb performance to weaning. New Zealand Journal of Agricultural Research.
[Journal article]Authored by: Back, P., Kenyon, P., Morris, S., Ridler, A.
Corner-Thomas, RA., Back, PJ., Kenyon, PR., Hickson, RE., Ridler, AL., Stafford, KJ., . . . Morris, ST. (2015). Ad libitum pasture feeding in late pregnancy does not improve the performance of twin-bearing ewes and their lambs. Asian-Australasian Journal of Animal Sciences. 28(3), 360-368
[Journal article]Authored by: Back, P., Corner-Thomas, R., Kenyon, P., Morris, S., Ridler, A.
Hudson, NL., Berg, MC., Green, MP., Back, PJ., Thorstensen, EB., Peterson, AJ., . . . McNatty, KP. (2014). The microenvironment of the ovarian follicle in the postpartum dairy cow: Effects on reagent transfer from cumulus cells to oocytes invitro. Theriogenology. 82(4), 563-573
[Journal article]Authored by: Back, P.
Hudson, NL., Berg, MC., Green, MP., Back, PJ., Thorstensen, EB., Peterson, AJ., . . . McNatty, KP. (2013). The microenvironment of the ovarian follicle in the postpartum dairy cow: Effects on reagent transfer from cumulus cells to oocytes invitro. Theriogenology.
[Journal article]Authored by: Back, P.
Kenyon, PR., Morris, ST., Hickson, RE., Back, PJ., Ridler, AL., Stafford, KJ., . . . West, DM. (2013). The effects of body condition score and nutrition of triplet-bearing ewes in late pregnancy. Small Ruminant Research. 113(1), 154-161
[Journal article]Authored by: Back, P., Kenyon, P., Morris, S., Ridler, A.
Green, MP., Ledgard, AM., Beaumont, SE., Berg, MC., McNatty, KP., Peterson, AJ., . . . Back, PJ. (2011). Long-term alteration of follicular steroid concentrations in relation to subclinical endometritis in postpartum dairy cows. Journal of Animal Science. 89(11), 3551-3560
[Journal article]Authored by: Back, P.
Green, MP., Ledgard, AM., Beaumont, SE., Berg, MC., McNatty, KP., Peterson, AJ., . . . Back, PJ. (2011). Long-term alteration of follicular steriod concentrations in relation to subclinical endometritis in postpartum dairy cows. Journal of Animal Science. , 1-32 Retrieved from http://jas.fass.org/content/early/2011/06/09/jas.2011-3958.full.pdf+html?sid=a0e9a50e-efcb-4ec6-956c-e669d86cebe4
[Journal article]Authored by: Back, P.
Sinclair, BR., Back, P., Davis, SR., Lee, J., MacKenzie, DDS., McNabb, WC., . . . Harris, PM. (2009). Insulin regulation of amino-acid metabolism in the mammary gland of sheep in early lactation and fed fresh forage. Animal. 3(6), 858-870
[Journal article]Authored by: Back, P., McNabb, W.
Chagas, LM., Lucy, MC., Back, PJ., Blache, D., Lee, JM., Gore, PJS., . . . Roche, JR. (2009). Insulin resistance in divergent strains of Holstein-Friesian dairy cows offered fresh pasture and increasing amounts of concentrate in early lactation. Journal of Dairy Science. 92(1), 216-222
[Journal article]Authored by: Back, P.
Chagas, L., Lucy, M., Back, P., Blache, D., Lee, J., Gore, P., . . . Roche, J. (2009). Insulin resistance in divergent strains of Holstein-Friesian dairy cows offered fresh pasture and increasing amounts of concentrate in early lactation. Journal of Dairy Science. 92(1), 216-222
[Journal article]Authored by: Back, P.

Book

Rogers, CW., Gee, EK., & Back, PJ. (2017). Commercial equine production systems. In PV. Rattray, IM. Brooks, & AM. Nicol (Eds.) Pastures and Supplements for Grazing Animals. : New Zealand Society of Animal Production
[Chapter]Authored by: Back, P., Gee, E., Rogers, C.
Back, PJ. (2017). Dairy production. In K. Stafford (Ed.) Livestock Production in New Zealand. (pp. 12 - 55). Massey University, Palmerston North, New Zealand: Massey University Press
[Chapter]Authored by: Back, P.

Thesis

Navarrete, SDC. (2016). Evaluation of herb pastures for New Zealand dairy systems. (Doctoral Thesis, Massey University)
[Doctoral Thesis]Edited by: Back, P., Pain, S.

Conference

Sriasih, M., Back, PJ., Pomroy, WE., Morris, ST., Hickson, RE., Dahlanuddin, ., . . . Qamar, S.Investigation of causes of neonatal mortality in Bali cattle on Sumbawa Island. IOP Conference Series: Earth and Environmental Science. 712 (1)1755-1307.
[Conference]Authored by: Back, P., Morris, S.
Handcock, R., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2019). Dairy heifer live weight effects on reproduction and survival. Proceedings of the Society of Dairy Cattle Veterinarians of the NZVA Annual Conference. (pp. 89 - 96). : NZVA Annual Conference
[Conference Paper in Published Proceedings]Authored by: Back, P., Lopez-Villalobos, N.
Handcock, R., Lopez-Villalobos, N., Back, PJ., Hickson, RE., & McNaughton, LR. (2019). Growth and milk production of dairy heifers born to two-year-old or mixed-age dams. New Zealand Journal of Animal Science and Production. (pp. 135 - 139).
[Conference Paper in Published Proceedings]Authored by: Back, P., Lopez-Villalobos, N.
Handcock, R., Lopez-Villalobos, N., McNaughton, LR., Back, PJ., Edwards, GR., & Hickson, RE. (2018). Dairy heifers: there is no such thing as too big. Proceedings of the New Zealand Veterinary Association – Dairy Vet Stream.
[Conference Paper in Published Proceedings]Authored by: Back, P., Lopez-Villalobos, N.
Gillingham, J., Coleman, LW., Back, P., Mueller, K., & Hickson, R. (2018). Assessment of vigour in early life of dairy calves in New Zealand. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. (pp. 161 - 164). : 78th Conference of the New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P.
Chin, Y., Roca, J., Gee, EK., Back, PJ., & Rogers, C. (2018). Modelling the energy balance in the pasture kept thoroughbred broodmare. (pp. 21 - 21). , Australasian Equine Science Society
[Conference Abstract]Authored by: Back, P., Gee, E., Rogers, C.
Back, PJ., Hickson, RE., Sneddon, NW., Coleman, LW., & Laven, RA. (2017). Brief communication: Managing liveweight gain of holstein-friesian, jersy and holstein-friesian-jersey crossbred heifer calves. Proceedings of the New Zealand Society of Animal Production (Inc). Vol. 77 (pp. 69 - 71). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R., Sneddon, N.
Gardner, RR., Back, PJ., Lopez-Villalobos, N., & McNaughton, LR. (2017). The percentage of spring-calving carryover cows in New Zealand dairy herds and their milk production, compared to heifers, age-matched and lactation-matched non-carryover cows. Proceedings of the New Zealand Society of Animal Production. Vol. 77 (pp. 3 - 7). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Lopez-Villalobos, N.
Handcock, R., Hickson, RE., & Back, PJ. (2016). The use of alternative pastures on dry land farms in New Zealand to promote heifer growth. In A. Iwaasa, HA. Lardner, M. Schellenberg, W. Willms, & K. Larsen (Eds.) Proceedings International Rangelands Conference. (pp. 236 - 238).
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, PJ., Hickson, RE., Lilly, VM., Coleman, LW., Sneddon, NW., & Laven, RA. (2016). Grazing behaviour and species selection of heifer calves fed different forages. Proceedings of the New Zealand Society of Animal Production. Vol. 76 (pp. 126 - 131). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R., Sneddon, N.
Back, PJ., Hickson, RE., van Bouwel, K., de Cock, H., Verdurmen, J., Sneddon, NW., . . . Laven, RA. (2016). Do different grazing strategies affect pre-weaning calf growth rates?. Proceedings of the New Zealand Society of Animal Production. Vol. 76 (pp. 119 - 121). : New Zealand Society for Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R., Sneddon, N.
Hickson, RE., Back, PJ., Martin, NP., Kenyon, PR., & Morris, ST. (2016). The influence of age and breed of cow on colostrum indicators of suckled beef calves. Proceedings of the New Zealand Society of Animal Production. Vol. 76 (pp. 163 - 168). : New Zealand Society of Animal Production (inc)
[Conference Paper in Published Proceedings]Authored by: Back, P., Kenyon, P., Martin, N., Morris, S.
Back, PJ., Hickson, RE., van Bouwel, K., de Cock, H., Verdurman, J., Sneddon, NW., . . . Laven, RA. (2016). Brief communication: Do different grazing strategies affect pre-weaning calf growth rates?. Proceedings of the New Zealand Society of Animal Production. Vol. 76 (pp. 119 - 121). : Animal Production 2016
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R., Sneddon, N.
Back, PJ., Hickson, RE., Lilly, VM., Coleman, LW., Sneddon, NW., & Laven, RA. (2016). Grazing behaviour and species selection of heifer calves fed different forages. Proceedings of the New Zealand Society of Animal Production. Vol. 76 (pp. 126 - 131). : Animal Production 2016
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R., Sneddon, N.
Cardoso, DS., Hickson, RE., Laven, RA., Coleman, LW., & Back, PJ. (2015). Brief communication: Do high-milk diets affect the growth rate of heifers prior to weaning?. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 75 (pp. 263 - 265). : 75th New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R.
Hickson, RE., Back, PJ., Coleman, LW., Lopez-Villalobos, N., Kenyon, PR., & Morris, ST. (2015). Brief communication: Composition of milk sampled from beef-cross-dairy cows unaccustomed to milking. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 75 (pp. 257 - 259). New Zealand: 75th New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Kenyon, P., Lopez-Villalobos, N., Morris, S.
Hickson, RE., Back, PJ., Coleman, LW., Lopez-Villalobos, N., Kenyon, PR., & Morris, ST. (2015). Brief Communication: Composition of milk sampled from beef-cross-dairy cows unaccustomed to milking. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 75 (pp. 260 - 262). Dunedin, New Zealand: 75th New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Kenyon, P., Lopez-Villalobos, N., Morris, S.
Handcock, RC., Hickson, RE., & Back, PJ. (2015). The use of herb mix and lucerne to increase growth rates of dairy heifers. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 75 (pp. 132 - 135). : 75th New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P.
Coleman, LW., Hickson, RE., Amoore, J., Laven, RA., & Back, PJ. (2015). Colostral immunoglobulin G as a predictor for serum immuoglobulin G concentration in dairy calves. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production 2015. Vol. 75 (pp. 3 - 8). : 75th New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Laven, R.
Clifford, RP., Hickson, RE., Martin, NP., & Back, PJ. (2014, June). Growth rates of dairy heifers fed alternative feeds. Presented at New Zealand society of animal production. Napier, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Clifford, RP., Hickson, RE., Martin, NP., & Back, PJ. (2014). Growth rates of dairy heifers fed alternative feeds. In S. Peterson (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 74 (pp. 29 - 34). Palmerston North, New Zealand: The New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P.
Hickson, RE., Back, PJ., Martin, NP., Kenyon, PR., Lopez-Villalobos, N., & Morris, ST. (2014). Differences in live weight and milking potential does not affect reproductive efficiency in beef breeding cows. In Reproduction in Domestic Ruminants VIII: Proceedings of the Ninth International Symposium on Reproduction in Domestic Ruminants(pp. 537). , Ninth International symposium on reproduction in Domestic Ruminants Leicestershire, England: Society for Reproduction and Fertility
[Conference Abstract]Authored by: Back, P., Kenyon, P., Lopez-Villalobos, N., Morris, S.
Hickson, RE., Back, PJ., Martin, NP., Kenyon, PR., Lopez-Villalobos, N., & Morris, ST. (2014). Differences in live weight and milking potential does not affect reproductive efficiency in beef breeding cows. Poster session presented at the meeting of Ninth International symposium on Reproduction in Domestic Ruminants. Obihiro, Hokkaido, Japan
[Conference Poster]Authored by: Back, P., Kenyon, P., Lopez-Villalobos, N., Morris, S.
Back, PJ., Martin, NP., Purchas, G., Susnjar, M., & Yapura, J. (2014). Validation of a visual estrus scoring system for use in grazing dairy herds. In Reporoduction in Domestic Ruminants VIII: Proceedings of the Ninth International Symposium on Reproduction in Domestic Ruminants(pp. 536). , Ninth international Symposium on Reproduction in Domestic ruminants: Society for Reproduction and Fertility
[Conference Abstract]Authored by: Back, P., Yapura, M.
Back, PJ., Martin, NP., Purchas, G., Susnjar, M., & Yapura, J. (2014). Validation of a visual estrus scoring system for use in grazing dairy herds. Poster session presented at the meeting of Ninth International Symposium on Reproduction in Domestic Ruminants. Obihiro, Hokkaido, Japan
[Conference Poster]Authored by: Back, P., Yapura, M.
Navarrete, SDC., Kemp, PD., Pain, SJ., Back, P., & Lee, JM. (2013). Effect of grazing frequency by dairy cows on herb based pastures. In DL. Michalk, GD. Millar, WB. Badgery, & KM. Broadfoot (Eds.) 2013 Proceedings of the 22nd International Grassland Congress. (pp. 1173 - 1174). : International Grassland Conference
[Conference Paper in Published Proceedings]Authored by: Back, P., Pain, S.
Sherlock, RG., Loker, S., Back, PJ., Voges, H., & Spelman, RJ. (2013). Whole genome association analysis of susceptibility to paratuberculosis in New Zealand dairy cattle. Proceedings of the Association for the Advancement of Animal Breeding and Genetics 20th Conference. (pp. 195 - 198). New Zealand: 20th Association for the Advancement of Animal Breeding and Genetics Conference 2013
[Conference Paper in Published Proceedings]Authored by: Back, P.
Navarrete, S., Kemp, P., Back, PJ., Pain, S., & Lee, J. (2013). Effect of grazing frequency by dairy cows on herb based pastures. In Proceedings of the 22nd International Grassland Congress(pp. 1173 - 1174). , Revitalising Grasslands to Sustain our Communities: 22nd International Grassland Congress Orange New south Wales, Australia: New South Wales Department of Primary Industry
[Conference Abstract]Authored by: Back, P., Pain, S.
Clark, BJ., Garcia-Muniz, JG., Back, PJ., & Lopez-Villalobos, N. (2013). Does production worth and breeding worth reflect cow profitability?. In R. Sumner (Ed.) New Zealand Society of Animal Production. Vol. 73 (pp. 17 - 20). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P., Lopez-Villalobos, N.
Lopdell, TJ., Berg, MC., Green, MP., & Back, P. (2012, July). Effect of resolving a sub clinical uterine infection on plasma and follicular fluid steroid concentrations in early lactation dairy cows. Presented at Second Joint 72nd New Zealand Society of Animal Production and 29th Biennial Australian Society of Animal Production Conference. Christchurch, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Lopdell, TJ., Berg, MC., Green, MP., & Back, P. (2012). Effect of resolving a sub-clinical uterine infection on plasma and follicular fluid steroid concentrations in early lactation dairy cows. In R. Sumner (Ed.) Proceedings of the 72nd New Zealand Society of Animal Production Conference. Vol. 72 (pp. 231 - 235). New Zealand: Second Joint 72nd New Zealand Society of Animal Production and 29th Biennial Australian Society of Animal Production Conference
[Conference Paper in Published Proceedings]Authored by: Back, P.
Lopdell, T., Berg, MC., Green, MP., & Back, PJ. (2011). Effect of sub-clinical uterine infection on plasma amino acid concentration in early lactation dairy cows. In R. Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 71 (pp. 291 - 295). Hamilton, New Zealand: New Zealand Society of Animal Production Conference
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, PJ., Lopdell, T., Berg, MC., & Green, MP. (2011, June). Sub-clinical uterine infection is associated with altered amino acid concentrations of follicular fluid in early lactation dairy cows. Presented at New Zealand Society of Animal Production Conference. Invercargill, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Back, PJ., Lopdell, T., Berg, MC., & Green, MP. (2011). Sub-clinical uterine infection is associated with altered amino acid concentrations of follicular fluid in early lactation dairy cows. In R. Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 71 (pp. 296 - 300). Hamilton, New Zealand: New Zealand Society of Animal Production Conference
[Conference Paper in Published Proceedings]Authored by: Back, P.
Lopdell, T., Berg, MC., Green, MP., & Back, PJ. (2012). Effect of sub-clinical uterine infection on plasma amino acid concentrations in early lactation dairy cows. In R. Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. (pp. 291 - 295). : New Zealand Society of Animal Production Conference
[Conference Paper in Published Proceedings]Authored by: Back, P.
Green, M., Back, P., & Berg, M. (2010). BRIEF COMMUNICATION: Difference in follicle dynamics and the importance of luteal support in young and old cohorts of genetically identical dairy cows. Proceedings of the New Zealand Society of Animal Production. Vol. 70 (pp. 303 - 305). Hamilton, New Zealand: New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Back, P.
Voges, H., Back, PJ., Nash, M., & Trotter, T. (2009). Evaluation of a Johne's disease bulk milk ELISA as a herd screening toll. Poster session presented at the meeting of 10th International Colloquium on Paratuberculosis
[Conference Poster]Authored by: Back, P.
Back, P., Ledgard, A., Beaumont, S., Berg, M., Peterson, A., McNatty, K., . . . Green, M. (2009, June). Effects of sub-clinical endometritis on ovarian follicular activity in postpartum dairy cows. Presented at 69th Conference of the New Zealand Society of Animal Production. Lincoln University, Christchurch, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Green, M., Ledgard, A., Berg, M., Peterson, A., & Back, P. (2009, June). Prevalence and identification of systematic markers of sub-clinical endometritis in postpartum dairy cows. Presented at 69th Conference of the New Zealand Society of Animal Production. Lincoln University, Christchurch.
[Conference Oral Presentation]Authored by: Back, P.
Green, M., Ledgard, A., Berg, M., Peterson, A., & Back, P. (2009). Prevalence and identification of systemic markers of sub-clinical endometritis in postpartum dairy cows. In . Roland Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 69 (pp. 37 - 42).
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, P., Ledgard, A., Beaumont, S., Berg, M., Peterson, A., McNatty, K., . . . Green, M. (2009). Effects of sub-clinical endometritis on ovarian follicular activity in postpartum dairy cows. In . Roland Sumner (Ed.) Proceedings of the New Zealand Society of Animal Production. Vol. 69 (pp. 32 - 36). Hamilton, New Zealand: New Zealand Society of Animal Production Conference
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, P., Boston, R., Palliser, C., Kolver, E., & Chagas, L. (2007, June). Evaluation of a model that estimates insulin sensitivity in dairy cows. Presented at 67th Conference of the New Zealand Society of Animal Production. Wanaka, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Back, P., & Macdonald, K. (2007). Milk production and feeding behaviour of grazing and indoor pasture-fed dairy cows. In DF. Chapman, DA. Clark, KL. Macmillan, & DP. Nation (Eds.) Australasian Dairy Science Symposium 2007 Conference Proceedings. (pp. 124 - 128).
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, P., & MacDonald, K. (2007, September). Milk production and feeding behaviour of grazing and indoor pasture-fed dairy cows. Presented at Australasian Dairy Science Symposium 2007. Melbourne, VIC, Australia.
[Conference Oral Presentation]Authored by: Back, P.
Back, P., Boston, R., Palliser, C., Kolver, E., & Chagas, L. (2007). Evaluation of a model that estimates insulin sensitivity in dairy cows. The Proceedings of the New Zealand Society of Animal Production. Vol. 67 (pp. 261 - 265).
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, P., Meier, S., Barnett, C., Cursons, R., & Thomson, N. (2006, June). Effect of dairy cow breed on the metabolic adaptation to lactation. Presented at 66th Conference of the New Zealand Society of Animal Production. Napier, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Turner, S., Macdonald, K., Back, P., & Thomson, N. (2006, June). Effect of cow genotype and feed allowance on milk consumption. Presented at 66th Conference of the New Zealand Society of Animal Production. Napier, New Zealand.
[Conference Oral Presentation]Authored by: Back, P.
Back, P., & Thomson, N. (2006, July). Effect of breed on leptin concentrations in early lactation. Presented at 2006 Joint Annual Meeting of the American Society of Animal Science and American Dairy Science Association. Minneapolis, Minnesota, United States of America.
[Conference Oral Presentation]Authored by: Back, P.
Back, P., & Thomson, N. (2006). Effect of breed on leptin concentrations in early lactation. In 2006 Joint Annual Meeting of the American Society of Animal Science and American Dairy Science Association(pp. 290 - 290). , 2006 Joint Annual Meeting of the American Society of Animal Science and American Dairy Science Association: American Dairy Science Association and American Society of Animal Science
[Conference Abstract]Authored by: Back, P.
Turner, S., Macdonald, K., Back, P., & Thomson, N. (2006). Effect of cow genotype and feed allowance on milk composition. The Proceedings of the New Zealand Society of Animal Production. Vol. 66 (pp. 397 - 402).
[Conference Paper in Published Proceedings]Authored by: Back, P.
Back, P., Meier, S., Barnett, C., Cursons, R., & Thomson, N. (2006). Effect of dairy cow breed on the metabolic adaptation to lactation. The Proceedings of the New Zealand Society of Animal Production. Vol. 66 (pp. 390 - 396).
[Conference Paper in Published Proceedings]Authored by: Back, P.
KuhnSherlock, B., McCutcheon, SN., Blair, HT., Morel, PCH., Back, P., Breier, BH., . . . Gluckman, PD. (1995). A role for IGF-1 in the regulation of foetal growth: Responses to IGF-1 manipulation and possible mechanisms. In GP. Savage (Ed.) PROCEEDINGS OF THE NUTRITION SOCIETY OF NEW ZEALAND, VOL 20. Vol. 20 (pp. 96 - 105). : 1995 Annual Conference of the Nutrition-Society-of-New-Zealand/Australasian-Clinical-Nutrition-Society
[Conference Paper in Published Proceedings]Authored by: Back, P., Blair, H., Morel, P.

Other

Back, PJ., Tulley, W., Margerison, J., Hendraningsih, L., & Green, M. (2013, November). The effect of feeding palm kernel expeller (PKE) on reproductive function in lactating dairy cows. In IVABS Research Colloquium, Massey University, Palmerston North.
[Oral Presentation]Authored by: Back, P.
Back, P. (2012, March). What do breed, milk production, uterine infection, ovarian dynamics and maternal aging in dairy cows have in common?. In Institute of Veterinary, Animal and Biomedical Sciences Seminar Series: Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand.
[Oral Presentation]Authored by: Back, P.
Bentley, R., Muir, P., & Back, P. (2006). A dairy exporter great farming guide: Calf rearing. (pp. 1 - 32). Dairy InSight
[Other]Authored by: Back, P.

Teaching and Supervision

Summary of Doctoral Supervision

Position Current Completed
Main Supervisor 0 2
Co-supervisor 0 3

Completed Doctoral Supervision

Main Supervisor of:

  • 2021 - Laura Hunter - Doctor of Philosophy
    The development and assessment of novel non-invasive methods of measuring sleep in dairy cows
  • 2020 - Lucy Coleman - Doctor of Philosophy
    The use of high genetic merit Angus and Hereford bulls in a New Zealand dairy herd

Co-supervisor of:

  • 2023 - Alvaro Wehrle Martinez - Doctor of Philosophy
    Investigating the pathogenesis of catastrophic humeral fractures in dairy heifers in New Zealand
  • 2021 - Michaela Gibson - Doctor of Philosophy
    Broken shoulders in dairy heifers in New Zealand: Investigating the relationship between live weight and bone morphology in the bovine forelimb
  • 2016 - Soledad Navarrete Quijada - Doctor of Philosophy
    Evaluation of Herb Pastures for New Zealand Dairy Systems

Media and Links

Media

  • 04 Sep 2020 - Newspaper
    Broken shoulders in heifers
    https://nzfarmlife.co.nz/broken-shoulders-in-heifers/#:~:text=The%20'broken%20shoulder'%20condition%20is,all%20contribute%20to%20weak%20bones.