Hybrid Boer goat breeding technology

In recent years, some provinces and regions in China have developed sheep meat for production, and imported boer goat breeds from abroad for pure breeding and crossbreeding and improvement work, which has effectively promoted the raising of goats in China. Practice has proved that Boer goats have the advantages of large size, fast growth, and high slaughter rate. But it is not perfect. It mainly has the following problems: 1 coat color, ear genetic instability, poor reproductive performance. Mainly manifested as late sexual maturity, strong seasonal heat, and no obvious performance. This is a fatal potential crisis for the vast majority of decentralized flock. 2 Boer goats are native to arid subtropical South Africa and require strict forage and feed requirements. The introduction of rearing in the vast area south of the Yellow River in our country shows a strong adaptability. In northern China, where winter is cold, pasture is lacking and it is difficult to adapt. Therefore, Boer goat breeding cannot be infinitely moved north. 3 Boer goat purebred male and female ewes prices are high, most sheep farms and sheep farmers are difficult to bear. Practice shows that: using the Boer goat as a male parent and the local goat as a female parent, the produced hybrid offspring has obvious advantages in terms of primary birth weight, weaning weight, and daily gain during breast-feeding. However, the high-generation hybrid sheep produced by the progressive hybridization method had lower production performance than the hybrid generation, and the disease resistance and stress resistance also significantly deteriorated. Therefore, the scientific method should be the use of advanced breeding techniques by scientific research units and large-scale sheep farms to cultivate a new line of meat goats suitable for the local environment. The majority of sheep farmers can use economic hybrids to produce high-quality sheep.
1. Analysis of Investment Benefits of Hybrid Boer Goats Boer goats are used as fathers to improve local goats. The advantages of hybridization are obvious. The production performance of hybrid offspring can be increased by 30% to 60%, which can greatly improve the benefits of raising sheep, for example, local Female goats have an average of 5 calves per year. Each lamb is 12 months old and weighs 26.3 kg. The total weight of 5 lambs is 131.5 kg. The slaughter rate is 32.7% and 43 kg of mutton can be obtained. Calculated at 12 yuan/kg, the total income is 516 yuan. With the crossbreeding of Boer goats, the total weight of 5 lambs was 324.5 kg. The slaughter rate was 46.8%, and 151.87 kilograms of mutton were obtained at the same rate of 5 lambs per year. Yuan calculation can earn 1822 yuan. In this way, 1 ewe is also raised every year, and the use of Boer goats to improve the local sheep can increase income by 1,306 yuan and increase economic efficiency by 2.35 times. If you raise 10 ewes per household, you can earn more than 13,060 yuan a year.
II. Several issues that should be noticed in breeding of hybrid goats
1. The birth weight and individual of the hybrid offspring of the selected ewes Boer goats are relatively large. If the ewes are too small or the ewes are born, it is easy to have dystocia. Once improperly handled, it will cause fetuses to be disabled or die. Therefore, the choice of ewes should be selected when the weight of more than 30 kilograms of the ewes, and require mating ewes no genital diseases, good breast development, so that the fetus can guarantee normal production.
2. Screening sources The current purebred Boer goats are small in number and high in price. Some farms (households) seek high profits, and high-generation hybrids of Boer goats serve as purebred goats for sale or breeding. The progeny of such hybrids have poor growth performance and their meat characteristics are not obvious. Therefore, reliable farms should be selected to purchase rams or semen. When buying semen, fresh vitality is required to be above 0.6, and frozen essence activity is above 0.35. In addition, when purchasing sheep or semen, ask the family for a pedigree.
3. The rational use of Boer goats has a low inventory and high costs. After sperm extraction, the original semen can be diluted and bred with the local ewes by artificial insemination. In this way, the utilization rate of breeding sheep can be improved and the improvement effect can be guaranteed. In addition, local goats can be improved by using frozen semen, but the fertilization rate is low and the effect is not good. Irrespective of the type of insemination used, strict operating procedures should be followed to grasp the best time for insemination.
4. Scientific feeding should strengthen the feeding and management of pregnant ewe to meet the nutritional needs of the fetus in the mother's different growth periods, and ensure that the postpartum milk is sufficient. After 10 days of age, the lamb began to replenish grass and concentrates, strengthen gastrointestinal training, and meet nutritional needs.
5. Strict epidemic prevention is based on the prevalence of sheep disease, and the “three combined four preventions” vaccination of “No. 5 disease”, tetanus, goat pox, sheep contagious pleuropneumonia and other diseases are done well. In addition, the parasites in the sheep must be regularly removed and the sheep house and the site must be disinfected.

Freeze-dried Half Of Fruit

Freeze-drying powder process includes: fresh fruit selection - cleaning - cutting - blanching - cooling - drying - grinding beating - gel grinding - sterilization - pre-freezing - vacuum freeze-drying - ultra-fine grinding - weighing packaging - testing - finished product.



Firstly, fresh and mature fruits with good quality were selected in the pre-treatment area of the food lyophilizer, and the leaves were removed to remove impurities. Then, preliminary cleaning and simultaneous sterilization of fruit surface were carried out. After sterilization, the fruits were cleaned and drained again. After the drain, the fruit is sliced and treated by blanching process. After the color preservation, the fruit is treated by pulping, and then pasteurized. The pretreatment process is finished before lyophilization.



The processing core of freeze-drying powder is the equipment area of food freeze-drying machine. After pre-treatment, the fruit enters the equipment of food freeze-drying machine and crystallizes into a solid state at low temperature, and then sublimates and dries in a vacuum environment to obtain freeze-drying products with little water content. Freeze-dried products out of the warehouse into the food freeze-dried post-processing area, ultrafine grinding, and then according to the need to do weighing packaging, after testing the finished products packed into storage.

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