Boer goat breeding

In the early stage, the original breeds of Boer goats were all introduced from abroad, and the relative price was relatively expensive, which led to the relatively high price of the original breeds and purebred breeds introduced back to China. The video and method of Boer goat breeding are introduced as follows.

Breeding method of Boer Goat

You can buy only 1-3 purebred Boer goats, which can be used to mate with local female goats and give birth to a generation of Boer goats after conception. The male lambs of the first generation of Boer goats can only be raised as meat goats for castration and cannot be kept as breeding sheep. When the ewe lambs of the first generation of Boer goats grow up and mate with purebred rams, they can give birth to the second generation of Boer goats.

Note:

When a generation of Boer goat ewes are in estrus, do not mate with their father sheep to avoid inbreeding. The second generation Boer goat male sheep still can not be used as seed sheep. When the second generation female lambs grow up and mate with other purebred Boer goats, they can give birth to three generations of Boer goats. By the third generation, both rams and ewes can be said to be purebred sheep, but they are still not as good as the fourth generation.

Generally speaking, by using this method to breed Boer goats, a large number of purebred Boer goats can be bred in two to three years, which is much cheaper and more cost-effective than directly buying Boer goats. It has been estimated that a purebred ram can breed at least 500 ewes in a year, and if frozen semen is used to inseminate, a ram can match more than 10,000 ewes.

There must also be an important condition for breeding Boer goats in this way, that is, ewes used for mating must be large and small "native goats". After being conceived with purebred goats, small goats are very likely to cause dystocia. Ewes are life-threatening. Only large ewes can mate with purebred sheep. There is a kind of ewe called Saanen goat, which is larger and cheaper, so it is suitable for breeding with purebred Boer goats.

Estrus identification

Estrus identification is a very important link in the breeding of Boer goats. The purpose of identification is to find ewes in time and correctly grasp the time of mating or artificial insemination so as to prevent mismatch and reduce the conception rate and lambing rate. There are three main methods for estrus identification of Boer goats.

1. External observation: during estrus, Boer goats showed obvious agitation, loss of appetite, cessation of ruminating, loud singing, tail shaking, congestion, swelling and relaxation of vulva and vagina, and excretion or discharge of a small amount of mucus.

2. Vaginal examination: this is a more accurate method for identification of estrus. The oestrus was judged by examining the changes of vaginal mucosa, secretion and cervical orifice. During vaginal examination, first keep the ewe well, wash the vulva, then clean, disinfect and apply lubricant to the opener. The inspector holds the opener horizontally in his left hand, closes the front end, slowly inserts it from the vaginal entrance, gently opens the front end, and examines the changes inside the vagina with a flashlight. When it is found that the vaginal mucosa is congested, red, the surface is bright and moist, there is transparent mucus exudation, and the cervix is congested, relaxed, opened, and mucus flows out, it can be defined as estrus. After the inspection, close the opener and pull it out gently.

3. Trial method: put the test ram into the ewe flock regularly once a day or twice in the morning and evening. The location of the trial should be flat, so that it is easy to observe and drive the ewes. When the trial ram is put into the ewe flock, the staff should not shout, but can drive the ewe herd properly so that the ewe is not crowded together. When it is found that the ewe sniff the ewe with its nose or tease the ewe with its hoof, or even climb onto the ewe's back, while the ewe stands still or takes the initiative to approach the ram, such an ewe is an ewe. At this point, ewes in estrus should be separated immediately for breeding. The suitable time for trial is about 1 hour.

Prenatal preparation

Boer goat lambing preparation, before lambing, the delivery meat sheep house should be cleaned, the walls and floor should be disinfected with 5% lye or 2%-3% laisu, whether spraying the floor or smearing the walls carefully and thoroughly. It should be sterilized for 2 or 3 times during the lambing period. The mutton sheep shed for childbirth should have sufficient area. Try to keep dry and constant temperature during lambing. Mutton sheep are prone to problems when they are wet. Equipment for keeping administrators, troughs and grass racks should be inspected and repaired before lambing. And disinfect it with alkali or lime water. The delivery column is a necessary tool for lambing. The ewe is kept in the pen after giving birth to the lamb, which can not only avoid the interference of other mutton sheep, but also facilitate the ewe to recognize the lamb. Therefore, the delivery column should be prepared or repaired before lambing. In summer and autumn in pastoral areas, Boer goats had better set aside some pastures not far from the mutton sheep pen and try to surround them instead of grazing. The grazing grassland for lambing ewes is suitable for grazing ewes for one and a half months. The grass should be sheltered from the wind and towards the sun. Close to the source of water. Ewes generally do not graze within a few days after delivery, so there should be a sufficient amount of high-quality hay, silage and juicy feed for lambing ewes.

Postpartum management

1. As the delivery period is approaching, we should pay attention to the status of ewes and do a good job of delivery. On the day after the birth of the lamb, remove the mucus around the mouth and nose of the newborn lamb and the meconium of the anus in time, and disinfect the navel with 5% iodine tincture. Be sure to let it eat colostrum to facilitate the excretion of fetal stool. When ewes die or lack milk, try to eat the colostrum of other ewes. Newborn lambs, strong lambs can suck milk, weak lambs, or newborn ewes, the nanny is not strong ewes, need artificial feeding, that is, the ewes are enclosed in the mother's pen, the lambs will suck milk, and the weak lambs should be fed every 1-3 hours, so several times, they will find their own ewes to suck milk. When feeding, ewes often smell the tail of the lamb to identify their own lambs, so when feeding other ewes for reasons such as lack of milk and multiple births, they should paint the lambs with ewe urine to make them recognize the lambs.

2. Lambing should generally be in the lambing room or in a special lambing pen. Within 3-7 days after delivery, the mother lambs live here to ensure that the lambs can eat colostrum and make them compatible. At the same time, attention should be paid not to squeeze the lambs when the ewes rest at night. Ewes can graze outside the house on the 7th day after delivery, and let the ewes return to feed the lambs at noon. When you come back in the evening, you should pay attention to making sure that each lamb can find its own ew. if there are conditions, the best ewes should be fed for 15 to 20 days.

3. Lambs should be trained to eat grass at the age of 15 to 20 days. At the age of half a month, the mixture was supplemented with 50g / d, 100g / d at 1-2 months, 200g / d at 2-3 months, and 250g / d at 3-4 months. The composition of the mixture is beans, bean cake, corn, etc., it is best not to use cottonseed cake; hay to alfalfa, peanut seedlings, willow leaves, etc., hay should be chopped. Feed concentrate first, then coarse feed, and properly add green fodder, at the same time, ensure adequate drinking water, and let the lambs do some activities in the playground every afternoon.

4. The method of weaning lambs is that they must be weaned at the age of 3 to 4 months. One more weaning method is adopted, that is, the mother and offspring are divided into groups, and the ewes are removed after weaning, and managed in groups according to the sex and strength of the lambs.

5. castration and tail amputation at the right time, non-breeding lambs can be castrated at the age of about 4 weeks, and surgery and ligation are often used. Tail amputation can be carried out within two weeks after birth, and the methods of burning and ligation are often used.

6. Strengthening the supplementary feeding of lactating ewes is very beneficial to the growth and development of lambs. Within 8 weeks after birth, lambs mainly rely on breast milk for growth. Ewe supplementary feeding is mainly in the late pregnancy and lactation period, the time is about four months. High quality hay and concentrate should be selected for supplementary feeding. 1.5 kg of hay (alfalfa or wild hay), 1.5 kg of silage and 0.45 kg of concentrate can be fed daily. Within 3 days after lambing, if the ewe is in good health, you can not feed concentrate for the time being, but only high-quality hay to prevent indigestion or mastitis.

7. Do a good job in the hygiene of the enclosure, keep it dry, clean and warm, keep the temperature at 0: 5 ℃, and prevent thieves from blowing. To frequently mattress grass, or dry soil, dry dung, etc., to keep the ground dry, to remove shedding miscellaneous hair, iron wire and other sundries in time, so as not to cause intestinal blockage or perforation and death of lambs. The trough should be clean and hygienic.

In fact, the sheep born by breeding ewes for surrounding farmers are Boer sheep hybrid sheep, and farmers can also get more benefits than raising ordinary goats. In general, an adult breeder ram can be bred 3 or 4 times a day. If it is resting every 4 days, it can be used for 24 days on average and 60 times a month on average. If the average is 30 yuan, the profit is at least 1800 yuan a month. After deducting four months of high temperature in a year, the annual income of an adult breeder ram is nearly 15000 yuan.