First, do a good job
The peak season of autumn estrus in cows is from August to October. When the cow reaches the breeding period, it should have a moderate lye body condition, too fat or too thin is not conducive to breeding. Therefore, over-fat cows should reduce the supply of concentrates and adjust formulas; while for over-lean cattle, compound feeds should be used for supplementation. The formula and method of feeding supplements are as follows: barley 30%, wheat 20%, soybean 10%, corn 40%, mixing, immersing in fresh water for 4 to 6 hours, then adding 8% to 10% of the total amount of the above feed. Bean cake, 5% bran, 1% salt, 3% to 5% bone meal. Feed cattle twice a day sooner or later, each feeding 8 to 10 kilograms, and appropriate extension of the grazing time, feeding cows with grass at night, so that the cows reach lye in the short term, estrus after breeding.
Second, timely breeding
Cattle's estrus cycle is 18 to 21 days for 1 to 2 days. Buffalo's estrus cycle is 18 to 25 days for 2 to 4 days. After the estrus, the cows are excited and appetite reduced. The genitals are flushed, congested, swollen, and white transparent mucus flows out. Touching the buttocks of the cows, the oxtails are high and the animals are calm and restless. At this time, it is most suitable to breed the cows. From 10 to 15 hours after the end of estrus to the end of estrus, the cows begin to ovulate. At this time, they are suitable for breeding. Cattle after 8 to 12 hours after the start of oestrus, the buffalo is on the afternoon of the second day or the morning of the third day after the onset of oestrus.
Third, aphrodisiac
Aphrodisiac can breed estrus cows. Here are three effective methods of aphrodisiac: First, for non-milk-producing cows, injectable benzoic acid for 20-25 mg of conjugated diol, 25-30 mg of ethylene-estradiol, or 40-50 mg of diphenol ethane. The cow can be estrus after the injection. The second is to use urine from healthy pregnant women who have been pregnant for more than 6 months, to remove 100 ml of urine in the morning for the first time, add 3 ml of 0.5% carbonic acid solution, boil and filter to make aphrodisiac. Used for subcutaneous injections of empty cows, once every other day, 35-40 ml each, for 3 days, the cows can be estrus. The third is to use Motherwort 30 grams, 25 grams of pumpkin leaves, 15 grams of safflower mixed Jianshui to cattle orally. Can also be used old date tree outer skin 0.5 kg, brown sugar 1 kg, add water, 3 kg of Jianshui to cattle two times a day sooner or later, and even served 2 to 3 days, the cow can be estrus breeding.
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