Cashmere goat breeding method

The breeding methods of cashmere goats are divided into two ways: free mating and artificial assisted mating.

In the non-matching season, the free mating season is for male and female ewes to be reared separately. In the mating season, 100 ewes are put into 3 to 4 rams for free mating. This method is more suitable for flocks scattered and distributed in high mountains and deep valleys, convenient and convenient, but can not fully play the role of excellent rams, affect the quality of the sheep; difficult to grasp the time of lamb production, easy to freeze, pressure, The step leads to the death of the lamb; because of the unlawful distribution of the lamb, the pedigree cannot be found; because of the difference in the ability of the male to breed, the horns struggle with the ewes at each other's corners, and it is easy to prolong the mating date, resulting in a large difference in the age of the lambs and poor management of the lambs. Easily cause estrous ewes early mating, so that the quality of the sheep decline; male and female hens mixed grazing, rams chase ewes, no limited mating, can not eat at ease, not only consumes ram energy, but also affect ewes feeding; easy Expand the spread of reproductive diseases such as vaginitis, cervicitis and so on.

Artificially assisted mating means that male and female ewes are grazing all year round. During the breeding period, they use the trial ram each morning to try their feelings. The ewes are singled out and rapped with designated rams.

Try rams. In the group-fed herds, because the estrus symptoms are not obvious, the estrus duration is short, and the estrus sheep are not easy to be found. Before the artificial assisted mating and artificial insemination, the rams should be used to find the estrus ewes so as to facilitate timely breeding.

Test feelings. First of all, we must deal with the trial ram: First, try the cloth method, with 4035 cm white cloth, nailed on the four corners, lying in the ram's waist, the ram's penis. The second is to ligate the vas deferens or to shift the penis: by surgical operation, ligation of the ram of the trial ram, or displacement of the penis, from the normal position. The former can mate and cannot conceive, while the latter cannot mate.

Test time. The trials are generally conducted before the animals are gravidly released and after the grazing is performed. The specific approach is: Put the ram in the ratio of 1:40 into the ewes, and try to use the nose to sniff the ewes, or use hooves to tease the ewes, and then climb over to the ewes' backs. When the ewe does not move, does not push it, or stretches out the hind legs to urinate, the ewe has estrus, pulls it out, paints the body, and is placed in the breeding room. This method can be equipped with 60 to 80 ewes per ram.

This method is suitable for sheep breeding areas with relatively abundant rams and small numbers of sheep. This method can not only grasp the pedigree and date of breeding, double the number of breeding rams, facilitate the grazing of ewes, but also make full use of excellent rams, which has a certain effect on improving the production performance of the group.

The downside is that the utilization rate of excellent rams cannot be fully exerted. It takes time and effort to replace rams every 2 to 3 years.

Artificial insemination. Artificial insemination is a major achievement of modern animal husbandry technology. It is through human means, with the help of sperm collection and insemination equipment, that the rams will be semen extracted, and after appropriate treatment, they will be fed to the ewes to fertilize the ewes.

Advantages: a ram of 0.5 to 1.5 milliliters of ejaculate, after dilution can give 10 to 15 ewes insemination, a ram can give 300 to 500 ewes insemination. The breeding ability of excellent male rams can be fully utilized to increase utilization rate of rams and speed up improvement. This will reduce the number of breeding rams, save the cost of forage, increase the gestation rate of ewes and prevent the occurrence of infectious disease and reproductive system diseases.

Artificial insemination technology is a relatively strict professional and practical technique. It can only be operated after studying at a local animal husbandry and veterinary station, a livestock improvement station, a livestock farm, or a related professional school.

Preparation before breeding. Preparation for mating ewes: Ewes' weight, health, age, and estrus consistency, especially when they are bred at the right time, are key to improving conception rates and lambing rates.

The first is to rectify the flock. In the 3 to 4 months before breeding, lambs should be weaned and fleece in time; the well-developed breeding ewes should be added to the ewes; 7- to 8-year-old ewes that are not suitable for breeding should have genital tract diseases. Two years of infertility ewes, weight is too small, even the annual production of poor quality lamb, poor milk yield, low yield ewes ewes. After adjusting the flock, the age structure strives to be reasonable, the appearance and performance are consistent, and the whole group is subjected to quarantine before the breeding of the fleece.

The second is short-term excellent feeding. For the adjusted ewes, the implementation of short-term excellent feeding is an important measure to achieve timely mating. The first is to select the natural grassland or artificial grassland with excellent grass quality for grazing, and keep the grazing time for 8 to 10 hours every day. The time for sheep to eat grass is 80% to 85%, the walk time is 12% to 15%, and the standing time is 3%. % ~ 5% to ensure that the sheep eat well. Sheep only drink 3 to 4 times a day, and to ensure that anytime, anywhere to dip salt, increase feed intake. The second is to supplement the appropriate amount of concentrate, each sheep fed 200 to 250 grams per day. Special attention should be given to the production of double lamb ewes, high milk yield, and weak individual ewes. Lambs with late lambs and poor lye need to be weaned 20 to 30 days in advance to supplement lambs, supplement feeds, strengthen nutrition, and promote the recovery of short-term ewes in all groups, early estrus, estrus, and multiple ovulations. , improve the conception rate and lambing rate.

Preparation for breeding rams. As I said before, "The rams are good and they are good to the right," and the rams play a decisive role in the quality of the sheep. To select individuals with high cashmere yield, good cashmere quality, strong physique, high sexual desire, strong ability to breed, and hereditary stability.

30 to 40 days before mating, 5 to 7 days at the beginning of the collection of a fine, followed by 3 to 5 days, the last 2 to 3 days, and semen quality checks, qualified in the breeding ram program. According to the characteristics and pedigree of each ram, do a matching plan to determine the main ram and auxiliary breeding rams and their matching ewes, and identify different parts of the sheep's back with different colors.

Train rams.

Site induction: When the sexually active ram is bred or harvested, the ram with poor sexual desire is nearby and induces its libido or mating sensation.

Mixed groups feeding in the same circle: Put rams that are insensitive to libido into general ewes or estrus ewes. After a few days, make them pay two or three times and then set them out from the flock.

Ejaculation vaginal discharge or urine ewes, smear on the ram in the nose or nose, stimulate their libido.

Massage ram testicles each morning and evening, each 10 to 15 minutes to help improve sexual desire.

In order to increase sperm motility, it is necessary to strengthen the exercise and exercise intensity of the ram. During the breeding period, the rams must perform pure exercise in addition to grazing every day, that is, within 10 to 15 minutes, forcibly drive away 2 to 3 kilometers. In order to increase sperm density, nutrition must be strengthened. In addition to feeding concentrates, 30 to 40 days before the start of breeding, 0.5 kg of milk and 1 to 3 eggs should be fed every day.

Technical measures to increase fertility in cashmere goats. Before grazing, grazing and feeding measures should be taken to improve the raminess of the male and female rams so that the rams are energetic, the ewes of the ewes are concentrated, the number of ovulations is increased, the estrus rate is high, and the conception rate is high during the first period of time. The embryos are in the mother's body. It is well developed, and the lambs are robust after birth and have a high survival rate in order to increase the survival rate.

Timely breeding, prolific early spring lamb. More than two lambs were selected to produce ewes and their rams were kept. There are data that the first two lambs producing ewes, in the next 2 to 4 tires have 72% production of twin lambs.

Increase the proportion of female ewes in the flock. It is usually best to use 5 years old.

In the practice of artificial insemination, the use of estrus technology during the same period is also an effective measure. This technology will not be described in detail. If it is adopted, it should be conducted under the guidance of local livestock technical personnel.

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