Vitamin deficiency in mink
Vitamin A deficiency
1. Symptoms: corneal malacia, dry eyes, night blindness.
2. Treatment: increase the amount of cod liver oil or add fresh liver.
Vitamin B deficiency
1, symptoms: loss of appetite, and then refuse to eat, issued hoarse screams, head back.
2. Treatment: inject vitamin B1 ml; refuse to eat in large groups, increase the amount of vitamin B1 and yeast powder, stop feeding freshwater fish or reduce their dosage.
Vitamin C deficiency
1. Symptoms: most of the symptoms occurred in 5-day-old minks, with herpes on their toes and obvious whiteness in the mouth.
2, treatment: young minks are fed with vitamin C, acceleration milligrams in severe cases, and vitamin C is added to the feed of female minks.
IV. Vitamin D deficiency
1. Symptoms: stumbling, emaciation, growth stagnation, rough coat, deformed bones, curvature of the spine.
2. Treatment: increase the feeding amount of cod liver oil, bone meal (or calcium) and strengthen the light.
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Technical measures to prevent secondary cocoons of silkworm, Bombyx mori
Raising silkworms and choosing high-yield and high-quality cocoons is the key to high yield and harvest. In the process of sericulture, many factors will produce many cocoons and reduce the benefit of sericulture. In order to avoid the occurrence of secondary cocoons, increase the cocoon rate and reduce the secondary cocoon rate are important links to further increase the economic benefits of sericulture households. The related technical points of preventing secondary cocoons are briefly introduced as follows: 1 strengthening the feeding and management of 1.1 small silkworms are covered with plastic film, which can not only keep the mulberry leaves fresh, but also promote the larvae to like to eat, which is beneficial to the larvae to eat and lift.
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Snake species-A brief introduction to the five-step snake
Five-step snake alias money White Snake, Silver Ring Snake, Little White Snake, White Snake, Baijie Snake. It belongs to the family Cobra, phylum Vertebrate. The snake is small and round, with the head in the center and the tail in the mouth, shaped like the size of ancient copper coins, hence the name "money Baihua Snake". The snakehead is slightly thicker than the body, oblong and round, dark brown. There is a raised ridge on the back, the whole body is composed of black-brown and white fine pieces, the dark-brown section is wide, with 45 to 60 nodes, and the abdomen is gray-white or yellowish-white, dark-brown.
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