Search Results - "Roche, J.R"

Milk Production and Fertility in Cattle by Berry, D.P, Friggens, N.C, Lucy, M, Roche, J.R

“…Evolutionary biology provides reasons for why the intensive selection for milk production reduces reproductive success rates. There is considerable exploitable…”
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Relationships between endometritis and metabolic state during the transition period in pasture-grazed dairy cows by Burke, C R, Meier, S, McDougall, S, Compton, C, Mitchell, M, Roche, J R

“…The primary objective of this study was to identify relationships between endometritis and metabolic state during the calving transition and early lactation…”
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Calving body condition score affects indicators of health in grazing dairy cows by Roche, J R, Macdonald, K A, Schütz, K E, Matthews, L R, Verkerk, G A, Meier, S, Loor, J J, Rogers, A R, McGowan, J, Morgan, S R, Taukiri, S, Webster, J R

“…The objectives of this study were to determine the effect of calving body condition score (BCS) on cow health during the transition period in a pasture-based…”
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Temporal profiles describing markers of inflammation and metabolism during the transition period of pasture-based, seasonal-calving dairy cows by Spaans, O.K., Kuhn-Sherlock, B., Hickey, A., Crookenden, M.A., Heiser, A., Burke, C.R., Phyn, C.V.C., Roche, J.R.

“…The physiology of the dairy cow while transitioning from pregnancy to lactation is complex, with multifactorial processes studied extensively for the role they…”
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Associations among body condition score, body weight, and reproductive performance in seasonal-calving dairy cattle by Roche, J R, Macdonald, K A, Burke, C R, Lee, J M, Berry, D P

“…The objective of the present study was to identify and quantify relationships between body condition score (BCS) and body weight (BW) in dairy cows with…”
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Invited review: reduced milking frequency: milk production and management implications by Stelwagen, K, Phyn, C V C, Davis, S R, Guinard-Flament, J, Pomiès, D, Roche, J R, Kay, J K

“…Most dairy cows throughout the world are milked twice daily. In intensive dairying systems, however, it is not uncommon to increase milking frequency to…”
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Invited review: New perspectives on the roles of nutrition and metabolic priorities in the subfertility of high-producing dairy cows by Chagas, L M, Bass, J J, Blache, D, Burke, C R, Kay, J K, Lindsay, D R, Lucy, M C, Martin, G B, Meier, S, Rhodes, F M, Roche, J R, Thatcher, W W, Webb, R

“…Management, nutrition, production, and genetics are the main reasons for the decline in fertility in the modern dairy cow. Selection for the single trait of…”
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Somatotropic axis components and nutrient partitioning in genetically diverse dairy cows managed under different feed allowances in a pasture system by Lucy, M C, Verkerk, G A, Whyte, B E, Macdonald, K A, Burton, L, Cursons, R T, Roche, J R, Holmes, C W

“…The somatotropic axis [including growth hormone (GH), GH receptor, and insulin-like growth factor (IGF)-I] is uncoupled in high-producing cows in early…”
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Changes in plasma electrolytes, minerals, and hepatic markers of health across the transition period in dairy cows divergent in genetic merit for fertility traits and postpartum anovulatory intervals by Grala, T.M., Kuhn-Sherlock, B., Roche, J.R., Jordan, O.M., Phyn, C.V.C., Burke, C.R., Meier, S.

“…Peripartum metabolism and subsequent reproductive performance of dairy cows are linked, with maladaptation over the transition period associated with poor…”
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Adaptive immune response ranking is associated with reproductive phenotypes in grazing dairy cows divergent in genetic merit for fertility traits by Grala, T.M., Kuhn-Sherlock, B., Crookenden, M.A., Walker, C.G., Roche, J.R., Price, M.D., Burke, C.R., Meier, S.

“…A strong adaptive immune response has been reported to have positive effects on fertility; therefore, we investigated antibody- and cell-mediated adaptive…”
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Effect of nonsteroidal anti-inflammatory drugs on the inflammatory response of bovine endometrial epithelial cells in vitro by Crookenden, M.A., Lake, A.V.R., Burke, C.R., Pratt, J.T., Mitchell, M.D., Phyn, C.V.C., Roche, J.R., Heiser, A.

“…Chronic postpartum uterine infection detrimentally affects subsequent fertility. Nonsteroidal anti-inflammatory drugs (NSAID) are used to alleviate pain and…”
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Effect of stocking rate on pasture production, milk production, and reproduction of dairy cows in pasture-based systems by Macdonald, K A, Penno, J W, Lancaster, J A S, Roche, J R

“…Ninety-four cows were randomly allocated to 1 of 5 stocking rates (2.2, 2.7, 3.1, 3.7, and 4.3 cows/ha) in a completely randomized design for 3 years. Herds…”
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Relationships among body condition score, body weight, and milk production variables in pasture-based dairy cows by Roche, J R, Lee, J M, Macdonald, K A, Berry, D P

“…The objective of the present study was to identify and quantify relationships among dairy cow body condition score (BCS) and body weight (BW) and production…”
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Feeding synthetic zeolite to transition dairy cows alters neutrophil gene expression by Crookenden, M A, Phyn, C V C, Turner, S A, Loor, J J, Smith, A I, Lopreiato, V, Burke, C R, Heiser, A, Roche, J R

“…Synthetic zeolites are used to control the availability of dietary minerals (e.g., Ca, Mg, and P) in dairy cows. Due to calcium demand increasing with…”
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Holstein-Friesian strain and feed effects on milk production, body weight, and body condition score profiles in grazing dairy cows by Roche, J R, Berry, D P, Kolver, E S

“…Data from 113 lactations across 76 cows between the years 2002 to 2004 were used to determine the effect of strain of Holstein-Friesian (HF) dairy cow and…”
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Production and reproduction of Fleckvieh, Brown Swiss, and 2 strains of Holstein-Friesian cows in a pasture-based, seasonal-calving dairy system by Piccand, V, Cutullic, E, Meier, S, Schori, F, Kunz, P L, Roche, J R, Thomet, P

“…The first objective of this study was to compare the productive and reproductive performance of Holstein-Friesian (CH HF), Fleckvieh (CH FV), and Brown Swiss…”
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Body condition score and body weight effects on dystocia and stillbirths and consequent effects on postcalving performance by Berry, D P, Lee, J M, Macdonald, K A, Roche, J R

“…The objective of this study was to quantify the effect of periparturient body condition score (BCS) and body weight (BW) related traits on the incidence of…”
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Review: New considerations to refine breeding objectives of dairy cows for increasing robustness and sustainability of grass-based milk production systems by Roche, J. R., Berry, D. P., Delaby, L., Dillon, P. G., Horan, B., Macdonald, K. A., Neal, M.

“…Although food from grazed animals is increasingly sought by consumers because of perceived animal welfare advantages, grazing systems provide the farmer and…”
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Associations among body condition score, body weight, somatic cell count, and clinical mastitis in seasonally calving dairy cattle by Berry, D P, Lee, J M, Macdonald, K A, Stafford, K, Matthews, L, Roche, J R

“…The objective of this study was to determine if an association existed among body condition score (BCS), body weight (BW), and udder health, as indicated by…”
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Genetic strain and diet effects on grazing behavior, pasture intake, and milk production by Sheahan, A J, Kolver, E S, Roche, J R

“…Understanding how dairy cows adjust their grazing behavior in response to feed supplements is important for the development of management strategies that…”
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