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Akademický článek

Characterization of an in vitro model to study CD4+ T cell metabolism in dairy cows

Autor: U. Arshad, M. Cid de la Paz, H.M. White, L.R. Cangiano

Publikováno v: JDS Communications, Vol 5, Iss 6, Pp 740-744 (2024)

Dairy cows are susceptible to several health disorders throughout their lactation. Objectives were to characterize an in vitro model to study bioenergetic measures in CD4+ T lymphocytes in dairy cows. Twenty-four healthy mid-lactation multiparous Hol

Externí odkaz: https://doaj.org/article/a3d08191fc9840af90f2cb536bad4dbc

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Akademický článek

Assessing different cross-validation schemes for predicting novel traits using sensor data: An application to dry matter intake and residual feed intake using milk spectral data

Autor: A. Yilmaz Adkinson, M. Abouhawwash, M.J. VandeHaar, K.L. Parker Gaddis, J. Burchard, F. Peñagaricano, H.M. White, K.A. Weigel, R. Baldwin, J.E.P. Santos, J.E. Koltes, R.J. Tempelman

Publikováno v: Journal of Dairy Science, Vol 107, Iss 10, Pp 8084-8099 (2024)

ABSTRACT: Feed efficiency is important for economic profitability of dairy farms; however, recording daily DMI is expensive. Our objective was to investigate the potential use of milk mid-infrared (MIR) spectral data to predict proxy phenotypes for D

Externí odkaz: https://doaj.org/article/b359eab555624d5d891a0d8a8894e895

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Akademický článek

Effects of feeding rumen-protected lysine during the postpartum period on performance and amino acid profile in dairy cows: A meta-analysis

Autor: U. Arshad, F. Peñagaricano, H.M. White

Publikováno v: Journal of Dairy Science, Vol 107, Iss 7, Pp 4537-4557 (2024)

ABSTRACT: Lysine is one of the limiting AA in the diets of dairy cows and is typically fed as rumen-protected Lys (RPL). We hypothesized that supplementation of RPL during the postpartum period would improve the productive performance in dairy cows.

Externí odkaz: https://doaj.org/article/8b3079e5df9946c9975b14569d76e65c

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Akademický článek

Novel genetic parameters for genetic residual feed intake in dairy cattle using time series data from multiple parities and countries in North America and Europe

Publikováno v: Journal of Dairy Science, Vol 106, Iss 12, Pp 9078-9094 (2023)

ABSTRACT: Residual feed intake is viewed as an important trait in breeding programs that could be used to enhance genetic progress in feed efficiency. In particular, improving feed efficiency could improve both economic and environmental sustainabili

Externí odkaz: https://doaj.org/article/f059b94bb385437f8220ccc4e0ce7807

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Akademický článek

Increasing the prepartum dose of rumen-protected choline: Effects on milk production and metabolism in high-producing Holstein dairy cows

Autor: H.T. Holdorf, S.J. Kendall, K.E. Ruh, M.J. Caputo, G.J. Combs, S.J. Henisz, W.E. Brown, T. Bresolin, R.E.P. Ferreira, J.R.R. Dorea, H.M. White

Publikováno v: Journal of Dairy Science, Vol 106, Iss 9, Pp 5988-6004 (2023)

ABSTRACT: Peripartum rumen-protected choline (RPC) supplementation is beneficial for cow health and production, yet the optimal dose is unknown. In vivo and in vitro supplementation of choline modulates hepatic lipid, glucose, and methyl donor metabo

Externí odkaz: https://doaj.org/article/27165a1b0baa4cf09929edcd221c2dc4

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Akademický článek

Increasing the prepartum dose of rumen-protected choline: Effects of maternal choline supplementation on growth, feed efficiency, and metabolism in Holstein and Holstein × Angus calves

Autor: H.T. Holdorf, W.E. Brown, G.J. Combs, S.J. Henisz, S.J. Kendall, M.J. Caputo, K.E. Ruh, H.M. White

Publikováno v: Journal of Dairy Science, Vol 106, Iss 9, Pp 6005-6027 (2023)

ABSTRACT: Feeding pregnant cows rumen-protected choline (RPC) may have the potential to affect the growth and health of offspring, but little is known about the optimal dose, or the potential mechanisms of action. The objectives of this experiment we

Externí odkaz: https://doaj.org/article/2ed1f0a1cc28437788a983d88210f65f

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Akademický článek

Predicting dry matter intake in mid-lactation Holstein cows using point-in-time data streams available on dairy farms

Autor: W.E. Brown, M.J. Caputo, C. Siberski, J.E. Koltes, F. Peñagaricano, K.A. Weigel, H.M. White

Publikováno v: Journal of Dairy Science, Vol 105, Iss 12, Pp 9666-9681 (2022)

ABSTRACT: Quantifying dry matter intake (DMI) in lactating dairy cows is important for determining feed efficiency; however, there are no methods for economically quantifying individual cow DMI on dairy farms where cows are group-fed. Attempts have b

Externí odkaz: https://doaj.org/article/33e02210665c4163a158be5e350f27dd

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Akademický článek

Feeding behavior parameters and temporal patterns in mid-lactation Holstein cows across a range of residual feed intake values

Autor: W.E. Brown, L. Cavani, F. Peñagaricano, K.A. Weigel, H.M. White

Publikováno v: Journal of Dairy Science, Vol 105, Iss 10, Pp 8130-8142 (2022)

ABSTRACT: Residual feed intake (RFI) is a measurement of the difference between actual and predicted feed intake when adjusted for energy sinks; more efficient cows eat less than predicted (low RFI) and inefficient cows eat more than predicted (high

Externí odkaz: https://doaj.org/article/66db97bb52664f53bd6ff989d27368b2

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Akademický článek

Multiple-trait random regression modeling of feed efficiency in US Holsteins

Autor: P. Khanal, K.L. Parker Gaddis, M.J. Vandehaar, K.A. Weigel, H.M. White, F. Peñagaricano, J.E. Koltes, J.E.P. Santos, R.L. Baldwin, J.F. Burchard, J.W. Dürr, R.J. Tempelman

Publikováno v: Journal of Dairy Science, Vol 105, Iss 7, Pp 5954-5971 (2022)

ABSTRACT: Residual feed intake (RFI) and feed saved (FS) are important feed efficiency traits that have been increasingly considered in genetic improvement programs. Future sustainability of these genetic evaluations will depend upon greater flexibil

Externí odkaz: https://doaj.org/article/4474809b91e24f749112ed10a83d89c8

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Akademický článek

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