Post-weaning excretion of purine derivatives by young calves
Autor: | Matanobu Abe, T. Iriki, Kensuke Kagiyama, Masayuki Funaba |
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Rok vydání: | 1995 |
Předmět: | |
Zdroj: | Canadian Journal of Animal Science. 75:153-156 |
ISSN: | 1918-1825 0008-3984 |
DOI: | 10.4141/cjas95-020 |
Popis: | Intestinal flow of MN was estimated from urinary purine derivative output in calves. Although estimated MN output (g d−1) increased with age, it was restricted to the period between weeks 6 and 11 after weaning when expressed as g d−1 kg−0.75. The estimated MN output to digestible organic matter ratio decreased with time after weaning, although the cubic contrast indicated to be highest on wks 1 and 11. Key words: Microbial nitrogen supply, purine derivatives, growing calves |
Databáze: | OpenAIRE |
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