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Determination of the biological value of a protein source with a supposedly ideal amino acid balance (a.r.c. 1981) for the young pig (10 to 20 kg liveweight)
Author(s) -
Moughan Paul J.,
Smith William C.,
Cornwell Julie K.
Publication year - 1987
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740380202
Subject(s) - casein , amino acid , biological value , nitrogen balance , zoology , balance (ability) , biology , food science , chemistry , biochemistry , nitrogen , organic chemistry , neuroscience
Abstract Fourteen entire‐male pigs of 16 kg mean liveweight were given a synthetic diet, the sole protein source of which comprised enzymically hydrolysed casein and free synthetic amino acids. The amino acid balance of the 80 g kg −1 crude protein diet was formulated to equal the Agricultural Research Council (1981) recommended ideal amino acid balance for the growing pig (20 to 90 kg liveweight). In two separate metabolism trials the biological value (BV) of the diet was estimated to be 0.86±0.012 (n=8) and 0.82±0.025 (n=5), respectively. Both BVs were significantly lower than unity, indicating that this dietary amino acid balance was less than ideal for the young pig.