The weather in autumn is cool, the pasture is abundant, the fodder is abundant, the bull is energetic, and the cow has a short estrus cycle and long duration. It is the golden season for breeding. Production should pay attention to the following questions:
1. Strong and strong. Prior to the mating period, suitable age cows should have a moderate body condition. Cows with poor body condition can adjust the feed ratio appropriately, increase the number of nutrition and feeding, and extend the grazing time, mowing the grass to feed the cows and prompting the cows to ovulate. Usually, we must pay attention to nutritional balance to prevent excessive intake of protein and energy feed caused by excessive cow obesity, affecting the quality of breeding.
2. Aphrodisiac. 1 induced feelings. With estrus bulls chasing non-estrus cows, urging cows to heat. 2 hormone aphrodisiac. For non-estrus cows, 25-35 mg of diethylstilbestrol, 40-60 mg of diphenol ethane, or 3-5 g triads may be used to estrus after injection. 3 Chinese herbal aphrodisiac. Use motherwort 30 grams, pumpkin leaves 24 grams, safflower 15 grams, Jianshui to cattle gavage, or use the old jujube tree split skin 0.5 kg, brown sugar 1 kg, add water 3 kg, Jianshui to cattle early and late Irrigation once, even for 2 to 3 days.
3. Timely breeding. After the estrus of the cows, the appetite decreased, they became restless, they liked to approach the bulls, they climbed over each other, the pussy flushed, and the blood was swollen, slightly open, often accompanied by white, translucent mucus outflow. Some cows also had a small amount of blood flowing from the vagina. At this time, it is most suitable to breed or inseminate the cow. The use of artificial insemination is an important measure to increase the conception rate of cows, especially for the rectal grasp method. During operation, insert the vas deferens flatly into the cervix 5 to 7 centimeters, then slowly inject semen. After the insemination is completed, slowly pull the vas deferens to prevent damage to cow vagina or semen.
4. Strengthen management. During the breeding period, the bulls should be fed with green feeds and concentrates. When they are busy, they should also feed animal feeds such as eggs and fish meal. Within 1 to 2 hours after the cows are mated, do not exercise vigorously. Avoid drinking or eating too much. After 15 days of mating, feeding is carried out at the same time, 1 to 1.5 kg of wheat bran is added, and clean drinking water containing a small amount of salt is supplied to promote fertilized egg implantation. During pregnancy, cows feed protein-, vitamin-, and mineral-rich feeds to suit cow growth and fetal, placental, and uterine developmental needs; they must not be fed mildew, spoilage, freezing, toxic, excessive acidity, or Strongly irritating feed to prevent enteritis, miscarriage, weak or stillbirth. The barn environment should be quiet to prevent miscarriage caused by excessive scaring, colliding, slipping, whipping, or overhead racking.
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