The meat donkey's fattening can be divided into ordinary meat donkey fattening and high-grade donkey meat fattening according to the performance. According to the age, it can be divided into young sucker fattening, young donkey fattening, adult donkey and eliminated donkey fattening. According to the material classification, it can be divided into fine material-type fattening and coarse material-blending fattening. To make the donkey fattening as soon as possible, the nutrients for the donkey must be higher than normal growth and development, so the fattening is also called overfeeding.
Donkeys of different varieties and fattening varieties have different nutritional needs during the fattening period. In general, meat donkeys need less nutrients for the same daily gain than non-meat varieties.
Donkeys in different growth stages of age and fattening also require different levels of nutrition during the fattening period. Young donkeys are in a period of vigorous growth. An important part of weight gain is bones, muscles, and viscera, so the protein content in feed should be higher. The main part of an adult donkey gaining weight during fattening is fat. At this time, the protein content of the feed can be relatively low and the energy should be higher. The total amount of nutrients required for unit weight gain is the youngest donkey and the oldest donkey. However, the young donkey's digestive function is not as good as the aging donkey, so young donkeys require higher feed quality.
Donkeys of any age, when fat is deposited to a certain extent, their viability declines, their appetite decreases, their feed conversion rate decreases, their daily weight gain decreases, and if they continue to grow fat, it is not economical. The older you are, the shorter the fattening period is. For example, an adult donkey takes only 3 months to 4 months. The length of the fattening period is also affected by feed quality and feeding methods. The feed efficiency of grazing is lower than that of feeding, so the fattening period of the grazing donkey is longer than that of the donkey.
The temperature of the environment and the temperature of the fattening environment have a great influence on the nutritional requirements and daily gain of the fattening donkey. In the low temperature environment, in order to withstand the cold, the donkey needs to increase the calorific value to maintain body temperature, so that relatively more nutrients are lost through metabolic conversion to heat energy and feed utilization rate is reduced. When in a high temperature environment, the number of breathing times of the donkey increases and the feed intake decreases. If the temperature is too high, it will result in food stoppage. In particular, the donkey's fat is more fat in the later period of the fattening period, and the high temperature hazard is more serious.
Different feed types and meat quality feed types will directly affect the quality of donkey meat. Through regulation of rearing, it is the most important means to increase meat production and quality. Without affecting the health and digestion of the donkey, the more nutrients it gives in the short term, the higher the daily gain it gains. The less feed consumed per kilogram of weight gain, the higher the slaughter, and the higher the benefit.
Slaughter weight and feed utilization are determined by the market's demand. The general rule is that the greater the slaughter weight of the donkey, the lower the feed utilization rate.
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