COMPARAISON DE L'EFFICACITÉ DES ÉNANTIOMORPHES DE LA MÉTHIONINE CHEZ LE POUSSIN

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Abstract
The efficiency of different forms of methionine for growth of chickens was studied. A method of feeding previously described by Calet and Melot (1961) for chickens and by Peretianu and Abraham (1963) for rats was used. Limited ration of protein and a protein-free feed are offered separately but at the same time. The protein feed consists mainly of crude soybean which is deficient in sulfur amino acids. Methionine is added to feed as the L-, D- or DL-forms, each as 0. 3 or 1. 0. Three weeks weight gain and intake of protein-free feed are recorded. The amount of methionine given had a highly significant effect. It was impossible to show any significant difference in growth or intake of feed attributable to the different isomers. In the same way, at either level, the efficiency of feed utilization was the same for the 3 forms of methionine.