Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Michael J. VandeHaar"'
Autor:
Sajjad Toghiani, Paul M. VanRaden, Michael J. VandeHaar, Ransom L. Baldwin, Kent A. Weigel, Heather M. White, Francisco Peñagaricano, James E. Koltes, José Eduardo P. Santos, Kristen L. Parker Gaddis, Robert J. Tempelman
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 9, Pp 7009-7021 (2024)
ABSTRACT: Large datasets allow estimation of feed required for individual milk components or body maintenance. Phenotypic regressions are useful for nutrition management, but genetic regressions are more useful in breeding programs. Dry matter intake
Externí odkaz:
https://doaj.org/article/47b067e591d14c2db168c17cc71d7002
Autor:
Ligia Cavani, Kristen L. Parker Gaddis, Ransom L. Baldwin, José E.P. Santos, James E. Koltes, Robert J. Tempelman, Michael J. VandeHaar, Malia J.M. Caputo, Heather M. White, Francisco Peñagaricano, Kent A. Weigel
Publikováno v:
JDS Communications, Vol 4, Iss 3, Pp 201-204 (2023)
Residual feed intake (RFI) has been used as a measure of feed efficiency in farm animals. In lactating dairy cattle, RFI is typically obtained as the difference between dry matter intake observations and predictions from regression on known energy si
Externí odkaz:
https://doaj.org/article/563c97d6a545410ba6ea0caafab6affa
Publikováno v:
JDS Communications, Vol 4, Iss 1, Pp 31-34 (2023)
We evaluated the effects of 2 direct-fed microbial (DFM) supplements containing 4 native rumen microorganisms on the production of dairy cows. Ninety Holstein cows (43% primiparous) were fed a common diet. Mean days in milk, milk yield, and body weig
Externí odkaz:
https://doaj.org/article/70a732b120704c7986a48ed01fe0f09b
Autor:
Ligia Cavani, William E. Brown, Kristen L. Parker Gaddis, Robert J. Tempelman, Michael J. VandeHaar, Heather M. White, Francisco Peñagaricano, Kent A. Weigel
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 9, Pp 7564-7574 (2022)
ABSTRACT: Residual feed intake (RFI) is commonly used to measure feed efficiency but individual intake recording systems are needed. Feeding behavior may be used as an indicator trait for feed efficiency using less expensive precision livestock farmi
Externí odkaz:
https://doaj.org/article/1c16a097f8eb464b97303ee4b268b8da
Autor:
Zuoxiang Liang, Dzianis Prakapenka, Kristen L. Parker Gaddis, Michael J. VandeHaar, Kent A. Weigel, Robert J. Tempelman, James E. Koltes, José Eduardo P. Santos, Heather M. White, Francisco Peñagaricano, Ransom L. Baldwin VI, Yang Da
Publikováno v:
Frontiers in Genetics, Vol 13 (2022)
The impact of genomic epistasis effects on the accuracy of predicting the phenotypic values of residual feed intake (RFI) in U.S. Holstein cows was evaluated using 6215 Holstein cows and 78,964 SNPs. Two SNP models and seven epistasis models were ini
Externí odkaz:
https://doaj.org/article/8c1acb4721d9415995ab89b3ea3e2ef7
Autor:
Caio S. Takiya, Caroline M. Ylioja, Amanda Bennett, Melissa J. Davidson, Maggie Sudbeck, Tryon A. Wickersham, Michael J. VandeHaar, Barry J. Bradford
Publikováno v:
Frontiers in Sustainable Food Systems, Vol 3 (2019)
Ruminants can convert feeds unsuitable and unpalatable for humans into milk and meat, and thereby play a key role in food security. Milk production efficiency is usually calculated as the ratio between nutrients secreted in milk and nutrient intake,
Externí odkaz:
https://doaj.org/article/802511e71bda4af081ab42efd966285a
Autor:
Malia J. Martin, Ryan S. Pralle, Isabelle R. Bernstein, Michael J. VandeHaar, Kent A. Weigel, Zheng Zhou, Heather M. White
Publikováno v:
Metabolites, Vol 11, Iss 12, p 868 (2021)
Selection for more feed efficient dairy cows is key to improving sustainability and profitability of dairy production; however, underlying mechanisms contributing to individual animal feed efficiency are not fully understood. The objective of this st
Externí odkaz:
https://doaj.org/article/01c6309666ee465ebd9726a54bf9185a
Publikováno v:
Journal of Dairy Science. 103:11689-11696
Our objective was to supplement colostrum with n-3 fatty acids (FA) to provide anti-inflammatory mediators that may improve the immune response of neonatal calves. Elevated markers of inflammation have been associated with increased occurrence of cal
Publikováno v:
Journal of Dairy Science. 103:12104-12108
Transition milk (TM, defined here as the second through fourth milkings after calving) supplies additional fat, protein, and immunoglobulins to the calf compared with milk replacer at industry-suggested feeding rates (∼14% solids). Our objective wa
Autor:
Michael J. VandeHaar, E. Liu
Publikováno v:
Journal of Dairy Science. 103:11401-11412
Our objectives were to determine (1) the sources of variation in cow responses to dietary protein reduction, and (2) the association of low dietary protein resilience (LPR) with protein efficiency. Lactating Holstein cows in peak lactation (n = 166;