Nurturing techniques to improve the breeding ability of donkeys

First, the breeding female donkey should maintain a strong fertility from the first breeding of the female donkey, with the increase in parity and age and fertility increased year by year, to the strongest fertility at the age of. Regardless of the male and female donkeys, when the nutrients are good, they can be bred to be over 20 years old, so there is the saying that “the old donkey is less cow”. Poor nutrition to 15 to 16 years old loses its fertility. In the breeding herd, attention should be paid to asses that often retain 65% to 70% of their fertile period.

Second, the breeding donkey group should maintain a good body condition. The breeding male and female donkeys have to go through system selection to achieve good reproductive performance, physical fitness, and the nutritional status is middle and superior. For this reason, breeding male and female donkeys must be fed according to feeding standards, with good quality forage, full price concentrates, adequate salt, and sufficient drinking water.

Third, to improve the female donkey's rate of mating female donkey is an important part of increasing fertility. The measures are as follows.
First, adjust the herd structure and increase the proportion of breeding female donkeys so that the proportion of breeding female donkeys in the herd reaches 50% to 70%.
Second, a reasonable layout, the establishment of a donkey breeding website, the implementation of artificial insemination, so that as many female donkeys participate in breeding.
Third, increase rejuvenation and promote estrus. Insufficient fodder, monoculture of old forage grass is not full price, especially the lack of protein and vitamins, is the main reason for raising the female donkey without estrus. To this end, the female donkey must increase the fine material one month before mating; participate in labor to extend the female donkey's intake time, and reduce the amount of exercise for the poorly bred, and increase the green and juicy feed.
Fourth, strengthen estrus observation and establish a reporting system. The breeder should be familiar with the estrus law and individual characteristics of each female donkey, observe the performance of the female asses in estrus, and once discovered, promptly lead to the artificial insemination station for estrus identification. Estrus forecasts can also be made based on the last estrus date to prevent missed matches.
Fifth, to speed up the uterus to restore the old, prompting maternal ass mating. The uterus of the female donkey after the delivery and the time of re-estrus after childbirth is an important sign to determine the reproductive function of the female donkey. Donkeys and horses, like about 10 days after birth (first episode), can be “matched”, and each estrus has normal estrus, and if it can be bred in time, it can increase the overall fertility rate of the herd.
Sixth, adopt a method of concentrated trial and breeding. In the season of high seasoning, villagers are selected as the unit to conduct routine trials on the female donkey. If the female donkey is found to be estrus, it will be immediately mobilized. This can improve the utilization of the excellent male donkey and improve the quality of the donkey.
Seventh, timely examination and treatment of estrus mother donkeys. Among the female donkeys used for service, 10% to 15% of female donkeys that are not estrus due to reproductive tract diseases should be promptly diagnosed and treated. Female donkeys that have lost reproductive ability should be excluded from the number of appropriate female donkeys.

Fourth, raising the female donkey's conception rate to increase female donkey fertility rate is an important part of improving fecundity. The measures are as follows.
The first is to improve feeding management and maintain the proper sex of the female donkey. The worse the nutritional condition of a donkey or a female donkey, the more weight they lose and the lower their fertility. The main effect of malnutrition on young female donkeys is to delay the time to reach a certain weight, postpone the age of the initial period, and greatly reduce the rate of conception of the virgin female donkey. Undernutrition also has a great influence on the re-pregnancy of the female donkey. It shows that the post-partum weight loss is greater, and as a result, the fertility rate of the mating is affected. Sometimes pregnancy also causes miscarriage and stillbirth, resulting in a decrease in reproduction rates. The greatest effect of undernutrition during pregnancy is often the female's postpartum weight loss, reduced reproductive rate, and reduced birth weight. We promote moderate nutrition, that is, medium-energy and medium-protein combinations, including vitamins and minerals, that require a balance of nutrient requirements.
Second, the male donkey has high semen quality and the frozen semen quality must meet the national standards before it can be applied.
Third, the timely insemination (breeding) must start from three aspects: First, to accurately grasp the estrus identification; second is to grasp the appropriate insemination time; third is to master the insemination technology.
Fourth, strict compliance with the operating procedures, pay attention to sanitary conditions. This is a very important issue that is often overlooked. If you do not pay attention to aseptic technique, the more common places where artificial insemination is carried out, is often the place where the female donkey reproductive tract disease spreads more seriously.
Fifth, the implementation of early pregnancy checks, pay close attention to compounding.

Fifth, to prevent female infertility and miscarriage female donkey often cause infertility due to reproductive obstacles, infertility often accounts for more than 40% of female donkey, giving female ass breeding caused great losses. Abortion is another factor that affects the proliferation of female donkeys, accounting for about 5% or more. Propagation diseases should be given active treatment and prevention; abortion, in addition to disease factors, is mainly caused by improper feeding and management, which should be solved through proper feeding and management.

VI. Improving the Survival Rate of Donkey Pugs The measures to increase the survival rate of donkey storks mainly include the following.
One is to take good care of the newborn donkey.
The second is to keep warm and prevent the thieves from attacking the donkey, especially when the climate changes dramatically.
The third is to allow colts to eat colostrum as early as possible, and eat the best within 2 hours after birth.
Fourth, the quality of the mother's lactation is an important condition for the survival rate of the young females and the speed of growth and development. The larvae are weighed on the first day of each lactation month (breast-feeding month). This is particularly important during the first 3 lactation months, since the donkey is based on breast-milk nutrition and can be checked by the weight gain of the donkey. The mother's lactation force. In the third month after lactation, as the donkey's pupa was gradually replaced by supplements, the correlation between the weight gain of the donkey and the lactating force of the female donkey was not as obvious as before.
The fifth is early supplement feeding. The donkey's beak is given soft and high-quality hay for 1 week after birth. It is better to increase the amount of feed depending on the weight. It is better to supplement the donkey's cockroach with the same tank supplementation with the donkey.

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