Beef cow advanced calving technique

(I) Technical Overview

When young cows reach 50% to 60% of mature weight, young cows can develop estrus and have fertility. Feeding 4 months of age and 5 months of age to weaning cow calves for 5 months to 8 months, before they enter the puberty stage, mating after 1 to 2 periods of time, so that the reserve cows can achieve Pregnancy and calving in advance.

(II) Increasing production and efficiency

Shorten the feeding period of reserve cows and increase production efficiency. Compared with traditional techniques, the time for the first birth of cows can be advanced by 12 months to 24 months, increasing the useful life of fertile cows (1 year - 2 years, 1 birth - 2 additional births). Play the breeding potential of cows, shorten the gap between generations, and accelerate the production or breeding process.

(three) technical points

1. Weaning mother lice breeding. Weaning of cows aged from 3 months to 5 months (with a body weight of not less than 110 kg) timely; weaning cows have enough roughage and supplemented with nutritionally balanced concentrates to keep daily gains between 0.8 kg and 1.5 kg. Seriously do a good job in the vaccine immunization of weaning cows and control of parasites in vivo and in vitro.

2. Estrus and breeding. After cultivation, the young cows reached the stage of puberty between the ages of 8 months and 10 months. Observe and record the estrus, and perform artificial insemination or use of the mating species during the second estrus. For estrus, the estrus is not obvious or estrus, exogenous reproductive hormones are used to induce estrus, and timely breeding.

3. Breeding, feeding and management of pregnant cows. Within one month after mating, keep the cows in a quiet and clean environment to minimize stress and facilitate embryo implantation. A balanced nutrient supply is provided to pregnant cows, and daily gain is controlled at 0.5 kg-1 kg. Daily guarantees that the cow has enough exercise space. The cows are transferred to the delivery room two weeks before the birth and ready for confinement.

4. Treatment of dystocia and nursing of newborn calves. Entering the due date, increase the number of observations for cows with signs of delivery so that dystocia can be detected within the first time and timely delivery. Postpartum cows should provide easily digestible green forage and balanced nutrient feed to ensure postpartum recovery and lactation.

Newborn calves with normal delivery usually do not need special care. For midwifery newborn calves, remove the mucus from the mouth and nose for the first time to allow them to breathe normally and allow calves to eat colostrum in time. For the first-born cows who are not accustomed to the action of cow's milk (the cows show dodge or kick), Baoding is taught. Artificial breastfeeding for sick and weak calves and active treatment.

The number of patrols is increased 7 days to 10 days after birth (not less than twice a day), focusing on whether the postpartum cows are healthy and if the calf is eating milk regularly. Two weeks after birth, the burdock has the habit of eating and drinking water even when the mother’s milk is adequate. It is necessary to clean and disinfect the barn and playground, ensure sufficient, fresh, clean drinking water, drink warm water in winter, and supply high quality. The easily digestible roughage allows it to feed. When a disease is found, it should be promptly diagnosed and treated.

(4) Precautions

Do a good job in the prevention and control of bovine diseases; do a good observation of the cow's estrus and mating records; do a good job in the cow's dystocia and newborn calf care.

(five) suitable area

Applicable to farms (households) where cows are kept, the daily weight gain of cattle needs to be adjusted depending on the variety.

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