| Abstrakt: |
This study investigated the transfer of fatty acids from silk pupae to chicken egg yolk in order to clarify the feasibility of using silkworm pupae waste from silk mills as feedstuff. A total of 15 Boris Brown hens, at 35 weeks of age, were fed experimental feed without silkworm pupae (Control group) and then divided into three groups having equal average feed intake. The hens were then fed a diet containing either 10, 20 or 30% silkworm pupae, depending on the group, and for 12 days each group was fed an amount sufficient to meet daily energy requirements. A linear regression equation with a mixing ratio of silk pupae(X, %)and α-linolenic acid in egg yolk (Y, g/100 g fatty acids) as variables was calculated. Major fatty acid in silkworm pupae showed the α-linolenic acid, with 34.2 g/100 g fatty acids. The results of the equation showed that the target value (three times the amount of α-linolenic acid in egg yolk of control) can be achieved when laying hens are fed a diet containing more than 7% silk pupae for at least 7 to 8 days. [ABSTRACT FROM AUTHOR] |
