桑樹枝條粉在養蠶用人工飼料中之利用價值

EVALUATION OF MULBERRY SHOOTS AS THE CELLULOSE SOURCE OF THE ARTIFICIAL DIET FOR THE SILKWORM, BOMBYX MORI

廖光正(Guang-Jeng Liaw) ； 吳美雲(Meei-Yun Wu) ； 朱耀沂(Yau-I Chu)

《中華昆蟲》 8卷2期 (1988/09) Pp. ap5+113-117

https://doi.org/10.6660/TESFE.1988012

摘要

本研究從攝食性及飼育試驗探討桑樹枝條做為家蠶人工飼料纖維素成份的可行性，並比較三種桑樹枝條的差異。蠶對桑樹枝條粉之攝食，隨韌皮部之減少，木質部之增加而提高；對於木質部／韌皮部之比大於7：3之飼料，蠶之攝食優於對添加化學品纖維素之對照飼料。以枝條粉為纖維素源的飼料飼育12小時後之蠶體重已高於對照組，24，36小時後蠶體重之差距隨時間而擴大。所以桑樹枝條粉為良好的人工飼料用纖維素來源。飼料中加入臺桑1號、臺桑2號及臺桑3號等三品種的桑樹枝條粉時，均能使孵化蠶順利成長至3眠；桑品種間之養蠶效果差異不顯著。

並列摘要

Mulberry shoots of 3 varieties, Taisong No.1, 2 and 3 were used in this experiment. The shoots were cut from 30cm of the tree tip were prepared and grounded to 80-100 mesh powder, then mixed in the artificial diet for the silkworm rearing. The results showed that the food intook by newly hatched larvae on whole phloem powder-agar diet was inferior to that of cellulose-agar diet, when mixed xylem powder in ratio of 7: 3, the no. of feces excreted increased or outnumbered to that of cellulose reared individuals. Rearing with the artificial diet containing whole shoot powder was most satisfactory. After 36 hrs of rearing, compared with cellulose control diet showed marked increase of the body weight. The diet containing the shoot powder of Taisong No.1, 2 and 3 were able to support newly hatched silkworms to grow to the 3rd instar successfully.