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Akademický článek

Dry period length affects rumen adaptation in dairy cattle precalving and during the first weeks after calving

Autor: R.M.A. Goselink, A.T.M. van Knegsel, A. Bannink, R.M. Bruckmaier, J. Dijkstra, G. van Duinkerken, J.T. Schonewille, W.H. Hendriks

Publikováno v: Journal of Dairy Science, Vol 107, Iss 10, Pp 8569-8581 (2024)

ABSTRACT: Omitting or shortening the dry period may result in a fairly constant ration throughout the transition period of dairy cows, reducing the need for adaptation of cow metabolism and rumen function to a new lactation. The objective of this stu

Externí odkaz: https://doaj.org/article/dbc94e88dc9c4438a5274abd0e17a6e0

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Akademický článek

Predicting CO2 production of lactating dairy cows from animal, dietary, and production traits using an international dataset

Publikováno v: Journal of Dairy Science, Vol 107, Iss 9, Pp 6771-6784 (2024)

ABSTRACT: Automated measurements of the ratio of concentrations of methane and carbon dioxide, [CH4]:[CO2], in breath from individual animals (the so-called “sniffer technique”) and estimated CO2 production can be used to estimate CH4 production,

Externí odkaz: https://doaj.org/article/b677e8fd9f844de79d163cdb6a2a3c41

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Akademický článek

Effect of source and frequency of rumen-protected protein supplementation on mammary gland amino acid metabolism and nitrogen balance of dairy cattle

Autor: K. Nichols, N. Wever, M. Rolland, J. Dijkstra

Publikováno v: Journal of Dairy Science, Vol 107, Iss 9, Pp 6797-6816 (2024)

ABSTRACT: The AA profile of MP affects mammary gland metabolism and milk N efficiency of dairy cattle. Further, the frequency of dietary protein supplementation may influence N partitioning leading to reduced N excretion. This study investigated the

Externí odkaz: https://doaj.org/article/3100fcc9da884bf5bd9476acb1cc6a9a

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