First, how to grasp the best end of the meat donkey fattening? Judging the best ending period of meat donkey fattening not only saves investment for the donkey, reduces the cost, but also has extremely important significance for ensuring the meat quality. There are generally the following methods: 1. Feed intake judgment. In the normal fattening period, the feed intake of meat donkeys is regular, that is, the absolute feed intake, which decreases with the increase in weight. If the decline amount reaches 1/3 or less of the normal amount, the fattening can be ended. 2. Calculate daily feed intake based on live weight based on dry matter. Feed intake was 1.5% or less of live weight, which was the best finish for fattening. 3. Judging from the appearance of the meat donkey, the criterion for the inspection and judgment is: whether there must be a significant amount of fat and fat in the fat-deposited parts; whether the deposited fat in the parts with a small fat is thick and balanced. Second, when the appropriate age of the donkey is appropriate? When the female donkey grows and matures, it has the appearance characteristics of female animals. The body weight of the female donkey is generally about 70% of its adult body weight, and the initial age of the female donkey is generally 2.5-3 years old. When the male donkey is 4 years old, it can be used for official breeding. Third, how to control the female estrus? Donkeys are seasonal estrus animals, estrus starts from March and April, April-June is the peak season for estrus, July-August, the summer heat is weakened, the estrus period is longer, and it stops until the autumn season and enters the flood season. . It is also possible to use artificial induction methods, that is, to use the exogenous hormones (such as gonadotropin) or other substances or environmental conditions to stimulate the female asses during the pansy period of the female donkey. Under normal circumstances, the female donkey can be injected with gonadotropin or human chorionic gonadotropin prostaglandin to control the estrus of the female donkey. Fourth, when is the appropriate time for breeding? The ovulation time of the female donkey is generally 3-5 days after the beginning of oestrus, ie 1 day before oestrus. For this reason, the breeding time should be within 1-5 days of the estrus duration, and the fertilization rate is high. China Agricultural Network Editor
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