Výsledky vyhledávání - "D.C. Patterson"

Akademický článek

Effect of offering dairy cows diets differing in phosphorus concentration over four successive lactations: 1. Food intake, milk production, tissue changes and blood metabolites

Autor: C.P. Ferris, D.C. Patterson, M.A. McCoy, D.J. Kilpatrick

Publikováno v: Animal, Vol 4, Iss 4, Pp 545-559 (2010)

The loss of phosphates from dairy farms contributes to the eutrophication of waterways. Whilst reducing the phosphorus (P) content of dairy cow diets has the potential to help reduce phosphate losses, diets containing inadequate dietary P may have a

Externí odkaz: https://doaj.org/article/591089ae92634e83bcbfa512899c08a7

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Akademický článek

Effect of offering dairy cows diets differing in phosphorus concentration over four successive lactations: 2. Health, fertility, bone phosphorus reserves and nutrient utilisation

Autor: C.P. Ferris, M.A. McCoy, D.C. Patterson, D.J. Kilpatrick

Publikováno v: Animal, Vol 4, Iss 4, Pp 560-571 (2010)

This experiment examined the long-term effects of offering diets containing low levels of dietary phosphorus (P) on dairy cow health, fertility and bone composition, and the effect of dietary P level on nutrient utilisation. One hundred winter-calvin

Externí odkaz: https://doaj.org/article/49f4ac936ac14bca908ea120034a93a2

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Akademický článek

Beef production potential of Norwegian Red and Holstein-Friesian bulls slaughtered at two ages

Autor: R.M. Kirkland, D.C. Patterson, T.W.J. Keady, B.W. Moss, R.W.J. Steen

Publikováno v: Animal, Vol 1, Iss 10, Pp 1506-1514 (2007)

There is a paucity of data on the beef production potential of Norwegian Red (NOR) compared with ‘modern’ Holstein-Friesian (HF) cattle. The present study used a total of 64 bulls in a 2 × 2 factorial design study encompassing two breeds (HF and

Externí odkaz: https://doaj.org/article/d6fa1db31332477fae51d35b0f396f2b

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Akademický článek

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Depth, bed slope and wave climate dependence of long term average sand transport across the lower shoreface

Autor: Peter Nielsen, D.C. Patterson

Publikováno v: Coastal Engineering. 117:113-125

We analyse measured 46 year changes in nearshore bathymetry to quantify rates of net shore-normal sand transport ( q x ) in 10–20 m depths at northern Gold Coast, Australia. These are significant both in understanding local disequilibrium shoreface

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ec49cfb9b4aa939c7cb56cafdd824a3
https://doi.org/10.1016/j.coastaleng.2016.07.007

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Calving traits, milk production, body condition, fertility, and survival of Holstein-Friesian and Norwegian Red dairy cattle on commercial dairy farms over 5 lactations

Autor: Conrad Ferris, S. Watson, D.C. Patterson, F.J. Gordon, David J Kilpatrick

Publikováno v: Journal of Dairy Science. 97:5206-5218

The objective of this study was to compare calving traits, BCS, milk production, fertility, and survival of Holstein-Friesian (HF) and Norwegian Red (NR) dairy cattle in moderate-concentrate input systems. The experiment was conducted on 19 commercia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0a041b341c324af2db7ca31646a1620
https://doi.org/10.3168/jds.2013-7457

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Effect of dietary protein content on the fertility of dairy cows during early and mid lactation

Autor: C.S. Mayne, David J Kilpatrick, A.R.G. Wylie, D.C. Patterson, R.A. Law, F.J. Young

Publikováno v: Journal of Dairy Science. 92:2737-2746

Ninety autumn-calving Holstein dairy cows (45 primiparous and 45 multiparous; mean parity, 3.1) were allocated to 1 of 3 treatments; 173, 144, or 114 g of crude protein (CP)/kg of dry matter (DM) from calving until d 150 of lactation. On d 151 of lac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d59e459bc395e9ddb602bb57d03c7ef3
https://doi.org/10.3168/jds.2008-1420

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The effect of quality of grass and maize silage on the intake and performance of beef cattle

Autor: R.M. Kirkland, D.C. Patterson

Publikováno v: Livestock Science. 100:179-188

A study was undertaken to evaluate the effects of incorporating high (HMS) and low (LMS) maturity maize silages into diets based on low (LGS) and high (HGS) feed value grass silages offered to beef cattle. Seventy-two continental cross-bred steers we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09c835330788be6efcce8f444e977e62
https://doi.org/10.1016/j.livprodsci.2005.08.015

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Relationships Between Urea Dilution Measurements and Body Weight and Composition of Lactating Dairy Cows

Autor: R.E. Agnew, J.D. McEvoy, M.G. Porter, D.C. Patterson, T. Yan, R.W.J. Steen, W.J. McCaughey

Publikováno v: Journal of Dairy Science. 88:2476-2486

The objective of the present study was to investigate the potential of the urea dilution technique, coupled with live animal measures to predict the body components of dairy cattle. The study involved 104 lactating Holstein-Friesian cows offered gras

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bc7fde1c8658c0a1c55eda4eb3e7d09
https://doi.org/10.3168/jds.s0022-0302(05)72925-8

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