桑褐斑病叶的营养成分变化及对家蚕的健康效应分析.

[Objective] The study aimed to clarify the changes of nutritional components of mulberry leaf spot and the effects on the health of silkworm. [Method] The healthy mulberry leaves and the diseased mulberry leaves were collected in the outbreak season of mulberry brown spot disease. The contents of nutritional components were determined, and the effect of mulberry leaf spot on silkworm was analyzed by sericulture test. [Result] Results showed that the contents of crude protein, crude fiber, total sugar, solubility sugar, amino acides of disease mulberry leaves were significantly lower than that of health mulberry, while crude ash and mineral elements (except P) increased remarkably. Fhe biological experiment of silkworm rearing showed that the affected leaves had a great influence on the uniform life rate, larva weight, larval stage and digestive absorption rate of the insect pupa in home, but had no obvious effect on cocoon quality. [Conclusion] Mulberry leaves infected with mulberry brown spot disease have a great impact on the nutritional components of mulberry leaves and the health of bombyx mori. Therefore, in silkworm areas where brown spot disease is common, it is necessary to plan harvesting leaf reasonably and avoid using diseased leaves when brown spot disease is serious. [ABSTRACT FROM AUTHOR]