0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
SJR
Q2
SJR
20
MNiSW
165.24
ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

Variability of apparent ileal amino acid digestibility in high-protein wheat samples for growing-finishing pigs

M. Z. Fan 1,  
W. C. Sauer 2,  
S. Li 2
 
1
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario, Canada N1G 2W1
2
epartment of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
J. Anim. Feed Sci. 2001;10(1):103–118
Publish date: 2001-01-22
KEYWORDS
ABSTRACT
An experiment was conducted to investigate factors responsible for the variability of apparent ileal digestibility values of amino acids (AA) in high-protein wheat samples. Six barrows, average initial body weight 30.5 kg, fitted with a simple T-cannula at the distal ileum, were fed six diets according to a 6 x 6 Latin square design. The six diets included 970 g kg-1 of different samples of wheat. Chromic oxide was used as the digestibility marker. The barrows were fed twice daily, at 08:00 and 20:00 h. The dietary allowance was 1,600 g d-1. Each experimental period consisted of 8 d. Ileal digesta were collected for a total of 24 h, at 2-h intervals, from 08:00 on d 6 to 08:00 h on d 8. There were differences (P<0.05) in the apparent ileal digestibility values of all amino acids (AA) among the wheat samples. Of the indispensable (+semi-) amino acids (AA), within each sample, the digestibility values of lysine and threonine, the first- and second-limiting AA, were lowest and ranged from 59.0 to 70.3 (P<0.05) and 64.2 to 73.0% (P<0.05), respectively. With the exception of arginine and tyrosine, the digestibility values of the other indispensable (+semi-) AA, were negatively correlated (P<0.05) with neutral-detergent fibre (NDF) content, whereas differences in dietary AA contents did not affect the variability of the ileal AA digestibility values in the wheat samples. In conclusion, measured with the ileal analysis method, there was considerable variation in the digestibility values of AA in high-protein wheat samples. Differences in NDF content were, in part, responsible for the variation. Furthermore, the relatively low digestibility values of lysine, threonine and tryptophan further accentuate the limitation of these AA in proteins from wheat.
 
CITATIONS (3):
1. Partial dehulling of barley effect the concentrations of both gross and ileal digestible amino acids in pigs
U. Hennig, S. Kuhla, W.B. Souffrant, A. Tuchscherer, Cornelia C. Metges
Livestock Science
2. Effect of partial dehulling of two- and six-row barley varieties on precaecal digestibility of amino acids in pigs
Ulf Hennig, Siegfried Kuhla, Wolfgang B Souffrant, Armin Tuchscherer, Cornelia C Metges
Archives of Animal Nutrition
3. Additivity of apparent and standardized ileal digestibility of amino acid determined by chromic oxide and titanium dioxide in mixed diets containing wheat and multiple protein sources fed to growing pigs
Tingting Wang, Saheed Oladipupo Osho, Olayiwola Adeola
Journal of Animal Science
ISSN:1230-1388