True digestibility of protein and amino acids in goats using plants naturally enriched in 13C as a label to determine endogenous amino acid excretion
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- 作者：C.S. Zhoua ; b ; L. Chena ; S.X. Tanga ; b ; J.H. Kanga ; X.F. Hana ; M. Wanga ; Z.X. Hea ; b ; Q.X. Yana ; Z.L. Tana ; b ; zltan@isa.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：AA ; amino acid ; N ; nitrogen ; ME ; metabolizable energy ; DM ; dry matter ; Ca ; calcium ; P ; Phosphorus ; NDFom ; neutral detergent fiber ; AAF ; amino acid fraction ; CP ; crude protein ; EAAs ; essential amino acids ; NEAAs ; nonessential amino acids ; VFA ; volatile fatty acid ; Arg ; arginine ; His ; histidine ; Ile ; isoleucine ; Leu ; leucine ; Lys ; lysine ; Met ; methionine ; Phe ; phenylalanine ; Thr ; threonine ; Val ; valine ; Ala ; alanine ; Asp ; aspartic acid ; Glu ; glutamic acid ; Gly ; glycine ; Tyr ; tyrosine
- 刊名：Animal Feed Science and Technology
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：215
- 期：Complete
- 页码：37-46
- 全文大小：425 K
文摘
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The 13C abundance in the amino acid fraction of blood in goats approached to the 13C abundance in C3 or C4 diet with the feeding time extension, and it reached a stable level after labeled for 12 weeks.
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The true protein digestibility in the forestomach, whole intestine and whole digestive tract for goats fed C4 diet tended to be higher than for those fed C3 diet.
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The goat tissue protein could be stable labeled with 13C naturally enriched in the diet, and 13C as natural isotope marker can be used to determine true amino acid digestibility.