SHORT COMMUNICATION
Intestinal digestibility of protein and amino acid of
ruminant feeds with the mobile nylon bag and
in vitro digestion technique
1
Department of Animal Biology & 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 & Physiology, College of Biological Sciences, China Agricultural University, Beijing 100094, P.R. China
Department of Animal Biology & Physiology, College of Biological Sciences, China Agricultural University, Beijing 100094, P.R. China
J. Anim. Feed Sci. 2007;16(Suppl. 2):195-200
KEYWORDS
ABSTRACT
The study was to provide the Chinese Feedbank with intestinal digestibility (Idg) of crude
protein (CP) and AA for feedstuffs commonly used in China. The various AA of feedstuffs weren’t
synchronously digested, while a larger variation was found in the same AA between feedstuffs. The
CP Idg estimated by mobile nylon bag technique in soyabean meal, cottonseed meal, peanut cake
meal, rapeseed meal, rice bran, maize germ meal, wheat bran and lucerne hay were 0.964, 0.813,
0.950, 0.826, 0.586, 0.793, 0.679 and 0.400, respectively. It has a strong correlation with the value
obtained by three-step in vitro procedure.
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