
%0 Journal Article
%A McDonald, MW 
%T Methionine supplements in chicken diets.  II. A breed difference in growth response to DL-methionine
%J Australian Journal of Agricultural Research
%D 1957/10/01
%V 8
%N 5
%P 587-594
%K 
%R https://doi.org/10.1071/AR9570587
%U https://www.publish.csiro.au/paper/AR9570587 
%X In four experiments, White Leghorn chickens showed a highly significantly (P < 0.01) greater response in early growth following addition of DL-methionine to a practical basal diet, than Australorp chickens. Average increases in body weight were: White Leghorns, 10.95 per cent.; Australorps, 2.0 per cent. In crosses between these breeds, it was shown that the difference between the breeds can be explained by a single sex-linked gene or group of genes, dominant in White Leghorns. Possible biochemical bases for the breed difference are discussed. 
