15N enrichment of casein amino acids in the milk from goats given a single intravenous dose of L-[15N]leucine

acide aspartique acido aspartico alanina alanine alimentation des animaux amino acids animal feeding asparagina asparagine aspartic acid azote caprin caprinos casein caseina essential amino acids fenilalanina glicina glycine (amino acid) goat milk goats isoleucina isoleucine leche de cabra leche desnatada leucina leucine methionine metionina nitrogen nonprotein nitrogen phenylalanine serina serine skim milk threonine tirosina treonina tyrosine valina valine whey protein