The period of sexual maturation of female buffalo is 1 year and a half to 2 years old. It is the mating period when it is about 3 years old. The period of sexual maturation of male buffalo is 2 years and a half to 3 years old. If the 3-year-old female buffalo has no signs of estrus, there are two reasons: First, there is a problem with the reproductive system, and second, there are no obvious signs of estrus. Etiology of the unhealthy reproductive system: The mother buffalo grows to 3 years old and has never had signs of estrus. The reproductive system is more likely to have problems. If the lack of nutrition in the calf growth process, reproductive system development is not perfect, estrus time will be delayed, because of this reason, and some buffaloes are not even estrus in life. Whether there is such a situation, it is best to ask technical staff of the local improved breeding station to carry out a “rectal examination†on buffalo to check whether the uterus and ovaries are not fully developed. When the mother buffalo is not 3 years old, it is not too late to take treatment. The treatment measures are: intramuscular injection of tristimulus estrogen, with a dose of 1 ml of 100 kg, which is effective once or twice. There are two causes of estrus being unclear: one is buffalo itself. When the female buffalo estrus occurs, there may be some features such as loss of appetite, buzzing, and mucus in the genitals. However, because the characteristics are not as pronounced as the sows, inexperienced feeders are easily overlooked. It is advisable to consult with local improved breeding station technicians or experienced people who have years of cattle breeding experience. The second is external reasons. If the female buffalo is estrus during stocking, it is very likely to mate with the stocking bull. Because the owner is unaware, the post-management and nutrition cannot meet the needs of the pregnant buffalo, and thus early embryonic death (abortion) occurs. The corpus luteus hardens and attaches to the surface of the ovary, causing the estrogen to recede and the buffalo to lose its estrus. The treatment measures are: intramuscular injection of prostaglandin to dissolve the corpus luteum. Dosage and usage are based on instructions for use of the drug. Experts believe that green grass contains almost all the necessary nutrients and trace elements for the growth and development of calves, ensuring adequate supply of forage is the key to ensuring the healthy growth of calves. In the development stage, mineral elements can be properly added in the fodder and feed, with phosphorus and calcium as the main components. At the same time add fat-soluble vitamins, such as vitamins A, vitamin D, due to higher potassium content in grass, in order to maintain the balance of potassium and sodium in the body, you can properly feed salt, feeding less than 50 grams a day is appropriate.
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