|
|
|
|
In situ
ruminal degradation and intestinal digestion of crude protein and amino
acids of three major proteinaceous feeds for Hanwoo steers
|
Y. K. Oh1, Y. J. Park1, Y. C. Baek1, Y.
J. Do2, D. H. Kim3, W. S. Kwak4 and H.
Choi1* |
1Animal
Nutrition & Physiology Team, National Institute of Animal Science, Rural
Development Administration, Wanju county 565-851, Jeon-Buk province,
Republic of Korea; 2Animal Diseases & Biosecurity Team,
National Institute of Animal Science, Rural Development Administration,
Wanju county 565-851, Jeon-Buk province, Republic of Korea 3Eco-friendly
Biomaterial Research Center, Korea Research Institute of Bioscience and
Biotechnology, Jeongeup county 580-185,
Jeon-Buk province, Republic of
Korea; 4Konkuk University, Chung-Buk province, Republic of
Korea
|
|
Abstract |
Three Hanwoo steers (mean body weight 520
±
20.2 kg), each fitted with a permanent ruminal cannula and a
T-shaped duodenal cannula, were
used to examine digestibility of
crude protein (CP),
rumen undegraded protein (RUP),
and individual amino acids (AA) of
three
proteinaceous feeds (cottonseed meal, CSM; perilla meal, PRM; rapeseed
meal, RSM), by using in situ
bag and in situ mobile bag
techniques. The
in situ RUP value was higher
in
PRM (69.1%) than in CSM (54.0%) and RSM (41.9%) (p<0.05). In most cases,
intestinal digestibility of CP
was higher than ruminal degradability of CP. The
intestinal degradation of Lys was not different among CSM (41.1%), PRM
(59.3%), and RSM (48.7%).
The
pattern of
intestinal digestion of Met was
similar
to that of
Lys.
Furthermore, PRM showed the
highest intestinal digestibility and total tract digestibility of
AA
compared with
other tested feeds. Overall, these results suggest that PRM may be used
as a good protein source for ruminants. These results may be used as
baseline data for ruminant ration formulation.
|
Keywords:
Crude protein;
rumen undegraded protein;
amino acid; Perila meal; degradation |
|
To cite this article:
Oh, YK, Park YJ, YC Baek, YJ Do, DH Kim, WS Kwak and H Choi,
2015.
In situ
ruminal degradation and intestinal digestion of crude protein and amino
acids of three major proteinaceous feeds for Hanwoo steers.
Res.
Opin. Anim. Vet. Sci., 5(10): 395-400. |
|
|