Nutritional formula for feeding silkworms in summer and autumn

The main feed of silkworm is mulberry leaf. Because the quality of mulberry leaf varies greatly in different seasons, it has a great influence on the yield and quality of cocoon. If you add nutrition to the cultured summer and autumn silkworms, the yield can be increased by 10% to 20%. The formula technology is introduced as follows:

1. Formula and feeding method of feeding agent. ① glucose solution additive. During the silkworm rearing period, in case of continuous overcast and rainy weather, the texture of mulberry leaves is tender due to lack of light, the moisture content is high, and carbohydrates are reduced. 5% glucose solution can be used to spray picked mulberry leaves and feed silkworms after drying, which can greatly alleviate the decline of cocoon quality and cocoon weight caused by the decline of leaf quality.

② soybean milk additive. In the case of long drought and no rain in summer and autumn, mulberry leaves are often rough and aging and lack of juice. at this time, it is better to spray mulberry leaves with boiling cold soybean milk water to feed silkworms. The silkworms of 4 ~ 5 days old were fed once or twice during the day. Soybean milk water production method: remove impurities and wash soybeans, grind and remove dregs after soaking in the ratio of soybean to water 1 ∶ 15, boil and cool, and spray 15 kg mulberry leaves per 1000 grams of soybean milk water.

③ urea liquid additive. The mulberry leaves were sprayed with 0.5%-1% urea, dried and fed to silkworms. From the third day of the 5-day-old silkworm, feeding once a day in the morning and afternoon can significantly increase the cocoon yield.

two。 Points for attention. The water used in ① formula should be clean and cold boiled water, and the concentration of food should not be increased at will.

Mulberry leaves sprayed with ② nutrition additives should not be stored for too long and should be used up on the same day to prevent fermentation deterioration and breed bacteria. Soybean milk is easy to ferment and deteriorate, so the production quantity should not be too much each time.

The mulberry leaves added with nutrients can not be dried when the ③ weather is dry and hot, and must be dried and fed in overcast and rainy weather.

The urea used in ④ urea liquid must be up to the standard, and the urea that is not up to the standard produced by small plants can not be used to prevent biuret poisoning.