A NOTE ON THE AMINO-ACID-COMPOSITION OF SOWS MILK

Effects of dietary protein concentration on the amino acid composition of sow's milk was studied using 10 crossbred first-litter sows. At pa rturition, diets containing similar concentrations of digestible energ y but with either 63 or 238 g crude protein per kg and 4.4 and 15.1 g lysine per kg respectively, were given through lactation (five sows pe r treatment). The ratios of other amino acids to lysine were in excess of those currently recommended for lactating sows. Dietary protein le vel significantly affected milk yield, gave higher milk protein output (P > 0.05) but was without significant effect on the proportions of a mino acids in the milk.