Dietary supplementation with N-carbamoylglutamate initiated from the prepartum stage improves lactation performance of postpartum dairy cows

Autor: Fengfei Gu, Chao Miao, Luyi Jiang, Diming Wang, Hongyun Liu, Jianxin Liu
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Animal Nutrition, Vol 7, Iss 1, Pp 232-238 (2021)
Druh dokumentu: article
ISSN: 2405-6545
DOI: 10.1016/j.aninu.2020.07.002
Popis: The objective of this study was to investigate the effects of supplementing N-carbamoylglutamate (NCG), an Arg enhancer, on amino acid (AA) supply and utilization and productive performance of early-lactating dairy cows. Thirty multiparous Chinese Holstein dairy cows were randomly divided into control (CON, n = 15) and NCG (CON diet supplemented with NCG at 20 g/d per cow, n = 15) groups at 4 wk before calving. Diets were offered individually in tie-stalls, and NCG was supplemented by top-dress feeding onto total mixed ration for the NCG group. The experiment lasted until wk 10 after calving. Dry matter intake tended to be higher (P = 0.06), and yields of milk (P
Databáze: Directory of Open Access Journals