
%0 Journal Article
%A Leibholz, J 
%T Tryptophane requirements of pigs between 28 and 56 days of age
%J Australian Journal of Agricultural Research
%D 1981/10/01
%V 32
%N 5
%P 845-850
%K 
%R https://doi.org/10.1071/AR9810845
%U https://www.publish.csiro.au/paper/AR9810845 
%X Sixty-four male pigs between 28 and 56 days of age were fed ad libitum on diets based on maize and meat meal, supplemented with 0 - 0.8 g of L-tryptophanelkg of diet. It was found that the tryptophane requirement of pigs for maximum weight gain and feed conversion ratio was met by 1.64 - 1.67 g/kg of diet between 28 and 56 days of age. There was a linear increase in the retention of nitrogen by the pigs up to the highest level of dietary tryptophane fed in these experiments, viz. 1.67 g/kg of diet. The concentration of urea and tryptophane in the blood plasma suggest that the tryptophane requirement was met by 1.64 g/kg of diet. 
