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Titolo:
Supply of the dairy cow with amino acids from dietary protein
Autore:
Hvelplund, T; Misciattelli, L; Weisbjerg, MR;
Indirizzi:
Res Ctr Foulum, Dept Anim Nutr & Physiol, Danish Inst Agr Sci, DK-8830 Tjele, Denmark Res Ctr Foulum Tjele Denmark DK-8830 nst Agr Sci, DK-8830 Tjele, Denmark
Titolo Testata:
JOURNAL OF ANIMAL AND FEED SCIENCES
, volume: 10, anno: 2001, supplemento:, 1
pagine: 69 - 85
SICI:
1230-1388(2001)10:<69:SOTDCW>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOBILE BAG TECHNIQUE; RUMEN UNDEGRADED PROTEIN; SMALL-INTESTINE; RUMINAL DEGRADATION; MILK-PRODUCTION; NYLON-BAG; APPARENT DEGRADATION; TRUE DIGESTIBILITY; RAPESEED MEAL; SOYBEAN-MEAL;
Keywords:
undegraded protein; microbial protein; degradability; intestinal digestibility;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Hvelplund, T Res Ctr Foulum, Dept Anim Nutr & Physiol, Danish Inst Agr Sci, DK-8830 Tjele, Denmark Res Ctr Foulum Tjele Denmark DK-8830 DK-8830 Tjele, Denmark
Citazione:
T. Hvelplund et al., "Supply of the dairy cow with amino acids from dietary protein", J ANIM FEED, 10, 2001, pp. 69-85

Abstract

Microbial protein produced in the rumen is not sufficient to meet the requirement for amino acids of the high producing dairy cow. The microbial protein thus need to be supplemented with a certain amount of undegraded protein which match the microbial protein both quantitatively and qualitatively to enable an efficient utilization for milk production. This paper summarizes findings with respect to amino acid composition and digestibility of microbial amino acids. The main emphasis is however on recent findings with respect to degradability and digestibility of individual amino acids in feed proteins. The results seem to indicate that degradability and digestibility estimates obtained for nitrogen may not always apply to individual amino acids. It is concluded that more research is needed to identify the ideal profile of the amino acids absorbed from the intestine of lactating cows. Results of such efforts are needed to compose an ideal protein supplement eventually by using protected amino acids to balance the microbial protein to meet the amino acid requirement of dairy cattle with a minimum of rumen undegraded protein.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 09:24:48