[The activity of and requirements for selected amino acids in growing female swine. 2. Methionine and cystine].
The methionine/cystine efficiency of ten protein sources including that of different charges of the same protein source was ascertained in N balance experiments with a total of 60 female pigs in the live weight range of 35-50 kg. The variability of the derived sulfur amino acids (SAS) efficiency coefficient (Csas) ranged between 0.64... 0.91 based on the SAS efficiency of casein as a standard. There was an analogous differentiation for the derived requirement values on the basis of the analysed methionine/cystine values of the proteins. For a protein retention of 100 g/day and a live weight of 40 kg, 6.2g methionine/cystine was ascertained based on the highest SAS efficiency (Csas = 1) as yet.
Sektion Tierproduktion und Veterinärmedizin, Karl-Marx-Universität Leipzig, Wissenschaftsbereich Tierernährungsphysiologie.
F
F
Liebert
G
G
Gebhardt
D000603:Amino Acids, Sulfur / Q000032:analysis; D000821:Animal Feed; D000818:Animals; D003553:Cystine / Q000378:metabolism*; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D008715:Methionine / Q000378:metabolism*; D013552:Swine / Q000254:growth & development* / Q000378:metabolism
D000603:Amino Acids, Sulfur; D004044:Dietary Proteins; D003553:Cystine; D008715:Methionine
Ergebnisse zur Wirksamkeit und zum Bedarf an ausgewählten Aminosäuren beim wachsenden weiblichen Schwein. 2. Mitteilung. Methionin und Zystin.