Effects of high ambient temperature and restricted feed intake on urinary and plasma 3-methylhistidine in lactating Holstein cows

Autor:	Shigeru Shioya, Mitsuru Kamiya, Yoichi Nishiba, Yuko Kamiya, Masahito Tanaka, Tomoyuki Oki
Rok vydání:	2006
Předmět:	medicine.medical_specialty Urea nitrogen Chemistry Urinary system General Medicine Crossover study Moderate temperature Treatment period Excretion Animal science Endocrinology Nutrient Internal medicine medicine General Agricultural and Biological Sciences
Zdroj:	Animal Science Journal. 77:201-207
ISSN:	1740-0929 1344-3941
DOI:	10.1111/j.1740-0929.2006.00338.x
Popis:	Three experiments were performed to examine the effects of high ambient temperature and feed restrictions on urinary 3-methylhistidine (3MH) excretion and plasma 3MH concentrations as a marker of myofibrillar proteolysis in lactating Holstein cows. In a crossover design, four cows were maintained during two 14-day treatment periods with ad libitum feed intake under constant moderate (18°C) or high (28°C) ambient temperature (Experiment 1), with ad libitum or 70% ad libitum feed intake under constant moderate temperature (Experiment 2), and with 70% ad libitum feed intake under constant moderate or high ambient temperature (Experiment 3). The total digestible nutrients intake was decreased (P
Databáze:	OpenAIRE
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