Peer reviewed journal publications

Davis, S. R., S-A. Turner, V. Obolonkin, K. Tiplady, R. J. Spelman, and C.V.C. Phyn. 2015. Lactation traits associated with short- and long-term once-daily milking performance in New Zealand crossbred dairy cattle. Journal of Dairy Science 98(9): 6094-6107

de Haas, Y., J. E. Pryce, M. P. L. Calus, E. Wall, D. P. Berry, P. Løvendahl, N. Krattenmacher, F. Miglior, K. Weigel, D. Spurlock, K. A. Macdonald, B. Hulsegge, and R. F. Veerkamp. 2015. Genomic prediction for dry matter intake of dairy cattle from an international data set consisting of research herds in Europe, North America and Australasia. Journal of Dairy Science 98(9): 6522-6534

Doole, G. J., and A, J, Romera. 2015. Trade-offs between profit, production, and environmental footprint on pasture-based dairy farms in the Waikato region of New Zealand. Agricultural Systems 141: 14-23

Grala, T. M., R. R. Handley, J. R. Roche, C. G. Walker, C. V. C. Phyn, and J. K. Kay. 2016. Once-daily milking during late lactation in pasture-fed dairy cows has minor effects on feed intake, body condition score gain, and hepatic gene expression. Journal of Dairy Science 99(4): 3041-3055

Gregorini, P., G. C. Waghorn, B. Kuhn-Sherlock, A. J. Romera, and K. A. Macdonald. 2015. Short-Communication: Grazing pattern of dairy cows that were selected for divergent residual feed intake as calves. Journal of Dairy Science 98(9): 6486-6491

Gregorini, P., P. Beukes, G. Waghorn, D. Pacheco, and M Hanigan. 2015. Development of an improved representation of rumen digesta outflow in a mechanistic and dynamic model of a dairy cow, Molly. Ecological Modelling 313: 293-306

Gregorini, P., P. C. Beukes, D. E. Dalley, and A. J. Romera. 2016. Screening for diets that reduce urinary nitrogen excretion and methane emissions while maintaining or increasing production by dairy cows. Science of the Total Environment 551-552: 32-41

Hammond, K. J., G. C. Waghorn, and R. Hegarty. 2016. The GreenFeed system for measurement of enteric methane emissions from cattle. Animal Production Science 56(3): 181-189

Jenkins, G. M., P. Amer, K. Stachowicz, and S. Meier. 2016. Phenotypic associations between gestation length and production, fertility, survival and calf traits. Journal of Dairy Science 99(1): 418-426

Kamphuis, C., B. Dela Rue, and C. Eastwood. 2016. Field validation of protocols developed to evaluate in-line mastitis-detection systems. Journal of Dairy Science 99(2): 1619-1631

Lange, J., A. McCarthy, J. Kay, S. Meier, C. Walker, M. A. Crookenden, M. D. Mitchell, J. J. Loor, J. R. Roche, and A. Heiser. 2016. Prepartum feeding level and body condition score affect immunological performance in grazing dairy cows during the transition period. Journal of Dairy Science 99(3): 2329-2338

Lee, J. M., E. M. K. Minnee, and C. E. F. Clark. 2015. Patterns in non-structural carbohydrate and nitrogen reserves in chicory (Cichorium intybus L.) and plantain (Plantago lanceolata L.) during regrowth in summer. Crop & Pasture Science 66(10): 1071-1078

Malcolm, B. J., K. C. Cameron, G. R. Edwards, H. J. Di, J. M. de Ruiter, and D. E. Dalley. 2016. Nitrate leaching losses from lysimeters simulating winter grazing of fodder beet by dairy cows. New Zealand Journal of Agricultural Research 59(2): 194-203

Mason, N. W. H., K. Orwin, S. Lambie, S. L. Woodward, T. McCready, and P. Mudge. 2016. Leaf economics spectrum - productivity relationships in intensively grazed pastures depend on dominant species identity. Ecology and Evolution 6(10): 3079-3091

Provenza, F. D., M. Meuret, and P. Gregorini. 2015. Our landscapes, our livestock, ourselves: Restoring broken linkages among plants, herbivores, and humans with diets that nourish and satiate. Appetite 95: 500-519

Roche, J. R., S. Meier, A. Heiser, M. D. Mitchell, C. G. Walker, M. A. Crookenden, M. Vailalti Riboni, J. J. Loor, and J. K. Kay. 2015. Effects of precalving body condition score and prepartum feeding level on production, reproduction, and health parameters in pasture-based transition dairy cows. Journal of Dairy Science 98(10): 7164-7182

Sargeant, K., and M. Paine. 2015. Building a robust capability framework to face the fast-growing challenges of the New Zealand dairy industry. Rural Extension & Innovation Systems Journal 11(1): 210-217

Vailati Riboni, M., M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. McDougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, and J. J. Loor.. 2016. Body condition score and plane of nutrition prepartum affect adipose tissue transcriptome regulators of metabolism and inflammation in grazing dairy cows during the transition period. Journal of Dairy Science 99(1): 758-770

Waghorn, G. C., A. Jonker, and K. A. Macdonald. 2016. Measuring methane from grazing dairy cows using GreenFeeds. Animal Production Science 56(3): 252-257

Waghorn, G. C., and J. Caradus. 2016. Legume traits for selection to benefit ruminant production. Legume perspectives 12: 5-7

Adler, A. A, G. J. Doole, A. J. Romera, and P. C. Beukes. 2015. Managing greenhouse gas emissions in two major dairy regions of New Zealand: A system-level evaluation. Agricultural Systems 135: 1-9.

Akbar, H., T. M. Grala, M. Vailati Riboni, F. C. Cardoso, G. Verkerk, J. McGowan, K. Macdonald, J. Webster, K. Schutz, S. Meier, L. Matthew, J. R. Roche, and J. J. Loor. 2015. Body condition score at calving affects systemic and hepatic transcriptome indicators of inflammation and nutrient metabolism in grazing dairy cows. Journal of Dairy Science 98: 1019-1032.

Berry, D. P., M. P. Coffey, J. E. Pryce, Y. de Haas, P. Løvendahl, N. Krattenmacher , J. J. Crowley, Z. Wang, D. Spurlock, K. Weigel, K. Macdonald, and R. F. Veerkamp. 2014. International genetic evaluations for feed intake in dairy cattle through the collation of data from multiple sources. Journal of Dairy Science 97: 3894-3905.

Beukes, P. C. , P. Gregorini, A. J. Romera, S. L. Woodward, E. N. Khaembah, D. F. Chapman, F. Nobilly, R. H. Bryant, G. R. Edwards, and D. A. Clark. 2014. The potential of diverse pastures to reduce nitrogen leaching on New Zealand dairy farms. Animal Production Science 54: 1971-1979.

Bowley, F. E., R. E. Green, P. R. Amer, and S. Meier. 2015. Novel approaches to genetic analysis of fertility traits in New Zealand dairy cattle. Journal of Dairy Science 98: 2005-2012.

Bryant, R. H., D. E. Dalley, J. Gibbs, and G. R. Edwards. 2014. Effect of grazing management on herbage protein concentration, milk production and nitrogen excretion of dairy cows in mid-lactation. Grass and Forage Science 69: 644-654.

Chapman, D. F. , G. R. Edwards, A. V. Stewart, M. McEvoy, M. O’Donovan, and G. C. Waghorn. 2014. Valuing forages for genetic selection: what traits should we focus on? Animal Production Science 55: 869-882.

Cheng, L., S. L. Woodward, R. J. Dewhurst, H. Zhou, and G. R. Edwards. 2014. Nitrogen partitioning, energy use efficiency and isotopic fractionation of cows differed in genetic merit fed low quality pasture in late lactation. Animal Productioon Science 54: 1651-1656.

Crookenden, M. A., K. S. Mandok, T. M. Grala, C. V. C. Phyn, J. K. Kay, S. L. Greenwood, and J. R. Roche. 2015. Source of metabolizable energy affects gene transcription in metabolic pathways in adipose and liver tissue of nonlactating, pregnant dairy cows. Journal of Animal Science 93: 685-698.

De Boer, M. W., S. J. LeBlanc, J. Dubuc, S. Meier, W. Heuwieser, S. Arlt, R. O. Gilbert, and S. McDougall. 2014. Invited review: Systematic review of diagnostic tests for reproductive-tract infection and inflammation in dairy cows. Journal of Dairy Science 97: 3983-3999.

Doole, G. J., and A. J. Romera. 2014. Cost-effective regulation of nonpoint emissions from pastoral agriculture: a stochastic analysis. Australian Journal of Agricultural and Resource Economics 58: 471-494.

Doole, G. J., and A. J. Romera. 2014. Implications of a nitrogen leaching efficiency metric for pasture-based dairy farms. Agricultural Water Management 142: 10-18.

Edwards, J. P.,  J. G. Jago, and N. Lopez-Villalobos. 2014. Principles for maximising operator efficiency and return on investment in rotary dairies. Animal Production Science 54: 1102-1108.

Edwards, J. P., B. T. Dela Rue, and J. G. Jago. 2015. Evaluating rates of technology adoption and milking practices on New Zealand dairy farms. Animal Production Science 55: 702-709.

Forbes, M. J., and P. Gregorini. 2015. The catastrophe of meal eating. Animal Production Science 55: 350-359.

Gregorini, P., J. Galli, A. J. Romera, G. Levy, K. A. Macdonald, H. H. Fernandez, and P. C. Beukes. 2014. Incorporating a prediction of postgrazing herbage mass into a whole-farm model for pasture-based dairy systems. Journal of Dairy Science 97: 4354-4366.

Gregorini, P., J. J. Villalba, F. D. Provenza, P. C. Beukes, and J. M. Forbes. 2015. Modelling preference and diet selection patterns by grazing ruminants: a development in a mechanistic model of a grazing dairy cow, MINDY. Animal Production Science 55: 360-375.

Heiser, A., A. McCarthy, N. Wedlock, S. Meier, J. Kay, C. Walker, M. A. Crookenden, M. D. Mitchell, S. Morgan, K. Watkins, J. J. Loor, and J. R. Roche. 2015. Grazing dairy cows had decreased interferon-γ, tumor necrosis factor, and interleukin-17, and increased expression of interleukin-10 during the first week after calving. Journal of Dairy Science 98: 937-946.

Hills, J. L. , S. C. Garcia, B. Dela Rue, and C. E. F. Clark. 2014. Individualised feeding of concentrate supplements to pasture-based dairy cows/Limitations and potential for individualised feeding of concentrate supplements to grazing dairy cows. Animal Production SCience 55: 922-930.

Hills, J. L., W. J. Wales, F. R. Dunshea, S. C. Garcia, and J. R. Roche. 2015. Invited Review: An evaluation of the likely effects of individualized feeding of concentrate supplements to pasture-based dairy cows. Journal of Dairy Science 98: 1363-1401.

Jonker, A. , G. Molano, C. Antwi, and G. Waghorn. 2014. Feeding lucerne silage to beef cattle at three allowances and four feeding frequencies affects circadian patterns of methane emissions, but not emissions per unit of intake. Animal Production Science 54: 1350-1353.

Kamphuis, C., B. Dela Rue, S.-A. Turner, and S.-F. Petch. 2015. Devices used by automated milking systems are similarly accurate in estimating milk yield and in collecting a representative milk sample compared with devices used by farms with conventional milk recording. Journal of Dairy Science 98: 3541-3557.

Kay, J. K., J. J. Loor, A. Heiser, J. McGowan, and J. R. Roche. 2014. Managing the grazing dairy cow through the transition period: A review. Animal Production Science 55: 936-942.

Kirshbaum, M. U. F., S. Rutledge, I. A. Kuijper, P. L. Mudge, N. Puche, A. M. Wall, C. G. Roach, L. A. Schipper, and D. I. Campbell. 2015. Modelling carbon and water exchange of a grazed pasture in New Zealand constrained by eddy covariance measurements. Science of the Total Environment  512-513: 273-286.

Lee, J. M., N. R. Hemmingson, E. M. K. Minnee, and C. E. F. Clark. 2015. Management strategies for chicory (Cichorium intybus) and plantain (Plantago lanceolata): Impact on dry matter yield, nutritive characteristics and plant density. Crop & Pasture Science 66: 168-183.

Mandok, K. S., J. K. Kay, S .L. Greenwood, J. P. MacNamara, M. Crookenden, R. White, S. Shields, G. R. Edwards, and J. R. Roche. 2014. Efficiency of use of metabolisable energy for body weight gain in pasture-based, nonlactating dairy cows. Journal of Dairy Science 97: 4639-4648.

Pacheco, D., G. Waghorn, and P. Janssen. 2014. Decreasing methane emissions from ruminants grazing forages: a fit with productive and financial realities? Animal Production Science 54: 1141-1154.

Phyn, C. V. C, J. K. Kay, A. G. Rius, S. R. Morgan, C. G. Roach, T. M. Grala, and J. R. Roche. 2014. Temporary alterations to postpartum milking frequency affect whole-lactation production and the energy status of pasture-grazed dairy cows. Journal of Dairy Science 97: 6850-6868.

Provenza, F. D., P. Gregorini, and P. C. F. Carvalho. 2015. Synthesis: Foraging decisions link plants, herbivores, and human beings. Animal Production Science 55: 411-425.

Ramsbottom, G. , B. Horan, D. P. Berry,  and J. R. Roche. 2015. Factors associated with the financial performance of spring-calving, pasture-based dairy farms. Journal of Dairy Science 98: 3526-3540.

Roche, J. R., N. A. Dennis, K. A. Macdonald, C. V. C. Phyn, P. R. Amer, R. R. White, J. K. Drackley. 2014. Heifer rearing to optimise farm profitability/Growth targets and rearing strategies for replacement heifers in pasture-based systems: a review. Animal Production Science 55: 902-915.

Romera, A. J, and G. J. Doole. 2015. Optimising the interrelationship between intake per cow and intake per hectare. Animal Production Science 55: 384-396.

Romera, A. J, G. J. Doole, and E. N. Khaembah. 2015. Value of chicory crops to pasture-based dairy farms in the Waikato region of New Zealand. Journal of Agricultural Science 153: 124-137.

Scarsbrook, M. R., and A. R. Melland. 2014. Dairying and water quality issues in Australia and New Zealand. Animal Production Science 55: 856-868.

Soca, P., H. Gonzalez, H. Manterola, M. Bruni, D. Mattiauda, P. Chilibroste, and P. Gregorini. 2014. Effect of restricting time at pasture and concentrate supplementation on herbage intake, grazing behaviour and performance of lactating dairy cows. Livestock Science 170: 35-42.

Vailati Riboni, M., S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. McDougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, and J. J. Loor. 2015. Adipose and liver gene expression profiles in response to treatment with a nonsteroidal antiinflammatory drug after calving in grazing dairy cows. Journal of Dairy Science 98: 3079-3085.

Waghorn, G. C., K.A. Macdonald, and M. M. Verwoerd. 2014. Tissue mobilisation in Holstein-Friesian cattle selected for divergence in efficiency, defined as residual feed intake. Animal Production Science 54: 1254-1257.

Walker, C. G., S. Meier, H. Hussein, S. McDougall, C. R. Burke, J. R. Roche, and M. D. Mitchell. 2015. Modulation of the immune system during post-partum uterine inflammation. Physiological Genomics 47: 89-101.

Wedlock, D. N., B. M. Buddle, J. H. Williamson, S. J. Lacy-hulbert, S-A Turner, S. Subharat, and A. Heiser. 2014. Dairy cows produce cytokine and cytotoxic T cell responses following vaccination with an antigenic fraction from Streptococcus uberis. Veterinary Immunology and Immunopathology 160: 51-60.