The end of the rectum of the chicken, together with the urinary and reproductive tracts, opens to the cloaca. The opening of the cloaca to the outside has a sphincter, called the anus.
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Breeding boars are produced to provide high-quality semen. Good boars and sows are the basis for obtaining a large number of high-quality piglets, and the role of boars in mass production is more important.
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Sheep's social behavior is very strong, and it is easy to establish a group structure. It mainly transmits and receives various information through sensory activities such as sight, hearing, smell and touch, so as to maintain and adjust the activities among group members.
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Pure breeding of pigs refers to breeding and breeding within the same breed. Pure breed breeding can not only provide material for pig breeding,
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Beef cattle fattening is based on the growth and development law of beef cattle, scientific application of feed and management technology,
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