Donkey species and individual differences
(I) Donkey species and individual differences
Different kinds of donkeys have different effects on fattening. For example, Guanzhong donkey, Jinnan donkey and other large and medium donkeys with higher breeding levels have relatively higher feed returns due to better precocity. Different individuals of the same donkey species have different speeds of fattening due to different physical appearances and physical constitutions. It is precisely because of this that it is possible to select the meat products within the donkey species. Compared with individuals, donkey breeds often have more differences in breeds than breeds, so meat donkey production must pay attention to systematic breeding in breeds.
(B) Age stage
At different ages, donkeys have different growth and development speeds. The donkey pupa has fast growth, high feed utilization, and good meat quality. The 0.5-year-old donkey has the fastest growth rate, but the production of meat is less, and the use is not worthwhile; the fattening effect is 1.5 to 2.5 years old. According to Liangzhou donkey, after 60 days of legume fattening, the average daily weight gain of the 1.5-year-old donkey was 633 grams. The average donation of the 4-year-old donkey was 377 grams, and the average donation of the 12- to 15-year-old donkey was 127 grams per day.
(c) Calving season
Although the donkey is in heat in spring and autumn, the weight of asses in the fall, weaning weight, growth rate, survival rate, and carcass quality are all far inferior to spring donkeys. Therefore, it is not advocated with autumn donkeys. It is hoped that the donkey can be produced during the year with the best climate and feed conditions, such as in April-May. If donkeys are produced before April, good conditions for feeding and feed conditions are required.
(D) Finishing month
Cold and hot summer are not conducive to fattening donkeys. If we can improve the environment in which the donkey is fattened, continuous batch fattening throughout the year is feasible.
(V) Finishing methods
The method of fattening meat donkeys should be chosen according to local conditions. According to the requirements of meat donkey industrialization, the use of factory-intensive and intensive fattening methods can greatly increase labor productivity and is the only way for modern meat donkey production.
(VI) Age of cut
The 1.5-year-old male donkey can already be assessed for its seed use value. At this time, the non-seed was fattened after being cut by a male donkey. The livelihood was significant and the meat quality was good. For example, if the Jinnan donkey was fattened in 70 days, the male donkey gained an average of 490 grams per day, while the donkey could reach 700 grams.
(7) Expanding the Source of Meat Donkeys
First, we must improve the structure of the donkey, increase the female donkey ratio, and the mother donkey has more breeding grounds. Second, to implement the principle of mating all females of the appropriate age, in addition to supplementing the reserve donkeys and selling donkeys as planned, the selected donkey packs can be cultivated as meat donkeys.
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