1.054
IF5
1.150
IF
Q3
JCR
1.7
CiteScore
0.396
SJR
Q2
SJR
40
MNiSW
148.75
ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

True ileal digestibility of amino acids of pea seeds and soyabean products estimated in pigs, rats and in vitro

E. Święch 1  ,  
 
1
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
J. Anim. Feed Sci. 2005;14(1):179–191
Publication date: 2005-01-31
KEYWORDS
ABSTRACT
The standardized ileal digestibility/true ileal digestibility (SID/TID) of protein and amino acids (AA) in low- and high-tannin pea seeds and soyabean products (soyabean meal, raw soyabean, extruded soyabean) containing different levels of trypsin inhibitor activity was determined and compared in growing cannulated pigs, in adult rats and using in vitro method. Endogenous losses of protein and AA at the ileal level were estimated in rats after feeding protein-free diet and were found to be similar to tabulated values for pigs. Protein and AA SID was significantly higher in pigs fed with low- than with high-tannin pea. In rats, AA TID was also higher in animals fed low-tannin pea, however, values were significantly different only for few AA. The in vitro AA SID measured in six pea cultivars decreased linearly with increasing tannin contents. Addition of raw soyabeans to a diet significantly decreased protein and AA SID/TID in both animal species, as compared to soyabean meal diet. The in vitro protein and AA SID was not affected by trypsin inhibitor activity. In conclusion, to rank feedstuffs according to their AA digestibility for pigs using alternative methods, the in vitro method is suitable for peas containing different levels of tannins, while rats are sensitive enough to trypsin inhibitor activity to differentiate soyabean feedstuffs.
CORRESPONDING AUTHOR
E. Święch   
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
 
CITATIONS (1):
1. Alternative prediction methods of protein and energy evaluation of pig feeds
Ewa Święch
Journal of Animal Science and Biotechnology
ISSN:1230-1388