Post-weaning excretion of purine derivatives by young calves

Autor: Matanobu Abe, T. Iriki, Kensuke Kagiyama, Masayuki Funaba
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