Measures to Avoid Embryonic Death in Summer
After sow mating, embryo mortality can reach 40%. Occurred mainly in the first 2 to 3 weeks after breeding. Factors that affect embryo loss include pregnancy, disease, sow's age, genetics, nutrition, external environment, intrauterine environment, and stress. The following precautions need attention throughout the year, but it is especially important during the hot season: Avoid estrus late insemination The easiest way to avoid late insemination is to ignore the plan for inseminating sows, and to inseminate exactly according to the conditions of standing reflections. Another approach is to determine the average length of time for weaned sows, juvenile sows, and return sows, respectively, and use these averages to reduce the time period for the last insemination. For example, if the sow's normal breeding program is morning-morning-morning, you can change to morning-morning/afternoon. In addition, a thorough estrus check can be performed before insemination to prevent improper timing of artificial insemination and interfere with uterine preparation. Try to avoid sow stress and mix only once at weaning After insemination occurs in the oviduct, the pig embryo will quickly fall into the uterus. However, the implantation will not occur until the 12th day after insemination, and the embryo will be fully integrated with the uterus on the 18th day. During this period, sows are very susceptible to stress factors such as transit and uncomfortable temperatures. If sows need to be mixed, they should be implemented on the day of weaning to minimize stress. Any unnecessary stress after mating may cause the embryo to lose its uterus. Try to avoid transferring sows during pregnancy Sows can be transferred on the day of the end of mating and on the 30th day, however, sowing the herds at any time after mating will greatly increase the risk of embryo loss. Changes in temperature also tend to increase the rate of loss of embryos. Measures should be taken to avoid adverse environmental conditions and to avoid unnecessary stress during the first trimester of pregnancy. Provide diets that meet maintenance needs before, during, and after mating For young sows, the pre-match nutrients seem to be more important than the post-growth nutrients in the number of embryos and embryo survival. This requires that young sows be supplemented with nutrients during the pre-species period. This can also be done for sows that produce sows, but the sows are more likely to reduce their intake spontaneously after weaning. However, studies have also shown that increasing dietary levels during the first 30 days after mating has a negative impact on embryo survival. In this case, sows and young sows should be maintained at or slightly above the maintenance level after mating. There is no special way to solve the problem of heat stress in terms of diet, but try to maintain the daily feed intake of the sow (so that the sow can feed 1.8 to 2.5 kg per meal depending on the formula). As with the lactation phase, appropriate measures may need to be taken to stimulate the appetite of the sow. Probiotics Powder,Kids Probiotic Powder,Infant Probiotic Powder,Children'S Probiotic Powder Jiangsu Biodep Biotechnology Co. ,Ltd. , https://www.mbioda.com