Feed preparation for snake culture
The main results are as follows: (1) the live animal snake is a carnivorous reptile with a wide range of feed sources. The snake eats mainly by swallowing. It can swallow small animals several times larger than its head, and its eyes are easy to find moving objects. In principle, it should be fed to live small animals, such as nutritious frogs, rodents, fish, birds, @ # @ 254 birds, rabbits, chickens, @ # @ 260 birds and so on.
Different kinds of snakes have different requirements for feed. generally speaking, silver ring snakes like to eat eel and @ # @ 237 mackerel; cobras like to eat rats; king cobras specialize in eating snakes and lizards; snakes and abdominal snakes not only eat rats and frogs, but also prey on birds.
(2) synthetic pellet feed in order to reduce feed cost and make snakes get full-price nutritious feed, synthetic pellet feed must be developed. In order to solve two problems in the preparation of pellet feed for snakes, the first is to know all kinds of nutrients needed for the growth, development and reproduction of snakes, so as to formulate feeding standards and prepare pellet feed with full nutrition according to feeding standards. The second is to solve the problem that snakes eat pellet feed. At present, the synthetic pellet feed is mainly to pour crude protein, crude fat, crude fiber, phosphorus, calcium and other minerals, vitamin An and B into the casings with appropriate amount of water to make sausages, mixed with odor squeeze, to induce snakes to eat. In order to make the snake easy to observe the moving object, vibrate the feed table, or put several Loach and earthworms in the middle of the pellet feed to drive the pellet feed activity. Pellet feed must contain full nutrition and good palatability.
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Diagnosis, treatment and Prevention of Blue ear Disease in Pig breeding
Porcine blue ear disease, also known as porcine reproductive and respiratory syndrome (PRRS), is caused by porcine reproductive and respiratory syndrome virus in the arteritis family. The harmful form of the disease changed from reproductive disorders in sows to respiratory syndrome in nursing pigs. The disease was introduced into China from abroad, which seriously affected the infectious disease of pig industry. The clinical symptoms were characterized by reproductive disorders, dyspnea, blue-purple ears and other infectious diseases. At present, the disease has new clinical symptoms, such as eyelid edema, subcutaneous edema, ear skin thickening, strange itching of mouth and nose, diarrhea,
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Why is the feeding period of growing and finishing pigs as short as possible?
Under good feeding and management conditions, it usually takes 100 to 120 days for lean pigs to go from 20 kg to 100 kg. China's intensive and regular pig farms generally take about 110 days from 20 kg to 100 kg, and the age of pigs with 100 kg body weight from birth to 100 kg is 160 to 180 days. Such benefits have the following aspects. First, high daily gain and high feed reward. Lean pigs grow fast, and if nutritionally comprehensive full-price feed is provided, the productivity potential can be full.
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