Amino acids profile of rumen-undegradable protein of maize, rice bran, soyabean meal and rapeseed meal in steers

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About the Journal Editorial Office Editorial Board Copy right and self-archiving policy Peer review process Instructions for Reviewers Printed version subscription Abstracting and indexing Contact

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Policies General information Open Access, Licensing terms, Commercial use and Copyright terms policies Self-archiving policy and Archive policies Article Correction and Withdrawal policy Manuscript Submission policy Authorship policy Conflict of Interest policy Language considerations policy Plagiarism and Duplicate publications policy Ethics policy Review process policy Acceptance of manuscripts policy Online First Articles and Special Issues policies Generative artificial intelligence (AI) policy Advertising policy

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Suppl. 2/2007 vol. 16

SHORT COMMUNICATION

Amino acids profile of rumen-undegradable protein of maize, rice bran, soyabean meal and rapeseed meal in steers

C. Y. Xie ¹

,

H. J. Yang ^1,2

,

Q. Yue ¹

,

X. B. Yao ¹

,

J. Q. Wang ²

1

Department of Animal Biology and Physiology, College of Biological Sciences, China Agricultural University, Beijing 100094, P.R. China

2

State Key Laboratory of Animal Nutrition, Institute of Animal Science, China Academy of Agricultural Sciences, Beijing 100094, P.R. China

Publication date: 2007-09-17

Corresponding author

H. J. Yang

Department of Animal Biology and Physiology, College of Biological Sciences, China Agricultural University, Beijing 100094, P.R. China

J. Anim. Feed Sci. 2007;16(Suppl. 2):235-240

DOI: https://doi.org/10.22358/jafs/74497/2007

KEYWORDS

amino acid profile

in situ degradation

feed evaluation

ABSTRACT

Maize, rice bran, soyabean meal and rapeseed meal were used to explore the effects of ruminal incubation on the amino acids profile of rumen-undegradable protein (RUP) in steers. Except maize, the disappearances of total amino acids (TAAs) and CP in feeds changed dramatically during former 24 h (P<0.05), and some slight differences were found in the following 24 h (P>0.05). Arginine and histidine were more sensitive to microbial degradation, but branch-chain AAs (isoleucine, leucine and phenylalanine) were more resistant. Microbial contamination should be taken into account to compare degradation rate of individual AA especially for branch-chain AAs in future research.

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