Minoru Nakazawa

Effect of the fish meal and the toasted soybean oil meal level added to the diet on the laying hen.

Feeding experimen was carried out to examine the effects of aditions of different levels of the fish meal and the toasted soybean oil meal on the performance of laying hen for one year. Hy-Line 934 F-strain hens were divided into three groups of 50 each. Levels of the fish meal and the toasted soybean oil meal in the diet were 8.0, 10.0% in group 1, 5.0, 15.0% in group 2 and 2.0, 20.0% in group 3 respectively.There were no significant differences in egg production, feed consumption and feed conversion among the three groups. The hypertrophy of the pancreas, which was shown to occur frequently when hens consumed high level of soybean oil meal, was not found in the mortal hens in this experiment. It was suggested that the toasted soybean oil meal was valuable as a protein source of the diet for laying hen compared with the fish meal.