In order to raise ewes for high yield and to have a high survival rate, it is necessary to strengthen feeding, scientific breeding, careful management, prevention of diseases, ensuring the safe and healthy health of the mother, and increasing the economic benefits of raising sheep.
The scientific building sheep house requires the sheep house to face the south, leeward and sunny, dry and clean, easy to grazing. In general sheep house area is 1.2 square meters for each sheep, sheep bed is 1.2 meters to 1.5 meters above ground, and the diameter of sandalwood head of sheep bed should generally be more than 12 centimeters. The red brick is used for walls and wall columns. Or cement bricks, spacing from 40 cm to 50 cm, bed board with 7 cm to 10 cm bamboo bamboo paving, bamboo spacing 1 cm to 1.5 cm gap, easy to excrete waste. There is a basic ewes bar. There is a playground outside the house, which is usually 1 to 1.5 times of the fence.
Choose good breeding sheep according to the use of high-quality breeding sheep breeds. Sheep such as Nanjiang Huangyang, Sichuan Mahan and Xiaohai Han sheep, and dairy sheep such as Shaanxi Guanzhong dairy goats and Swiss Sharon milk goats. Requires more than 40kg of exotic breeds of ram, more than 30kg of ewes, about 30kg of local ram, and about 20kg of ewes. The ram's body type is robust, with a straight back, a wide chest, and a well-developed testicle. The male characteristics are obvious. The female haplotype is large, compact and plump, with a straight back, a slightly enlarged hindquarters, well-preserved limbs, and well-developed breasts and reproductive organs. Through family selection, multiple mothers, mothers, and lambs are reserved for breeding.
Careful breeding of ewe ewes must be supplemented except for the four seasons of grazing, especially in the mating season, gestation period and lactation period. Concentrates are rich in protein, with a balance of minerals and vitamins. The formulas are as follows: hay powder 50%, corn flour 22%, wheat bran 8%, cooked soybean powder 6%, wolfberry cake 12%, shell powder 1.5%, salt 0.5%. Ewe breeding 30 days to implement short-term excellent feeding, daily supplements 0.25kg, potatoes, melons and vegetables juicy 0.5kg. In the late pregnancy and pre-lactation period, 0.45 kg of supplemental concentrate, 1.5 kg of hay and 1.5 kg of silage were added daily. In good conditions, the straw can be fed to the sheep after ammoniating or micro-storage. Feeding principle is the first time after the good feeding method, material in the animal husbandry, the grass after the animal husbandry, trough trough, less to add Tim, drinking water to clean the well water. The feed should be fresh and clean and free of mildew. Grazing in spring to control herds to prevent “running greenâ€, top wind grazing, wind grazing, proper feeding before grazing; summer early grazing late grazing, noon break to prevent heat stroke; autumn and winter far grazing, late grazing, frost days later Animal husbandry, animal husbandry in the evening, do not grazing in the snow. Pregnant ewes grazing locally during their maternity period. When grazing is strictly prohibited, whipping can cause frightening ewes frightened, crossing the ditch across the bar to prevent miscarriage. When a pregnant sheep has a precursor to miscarriage, it should be treated with progesterone 0.1g to 0.2g intramuscularly once a day for 4 days.
The breeding ability of the ram's breeding management rams depends on a strong constitution, ample energy and a strong sexual desire. Therefore, we must ensure adequate supply of protein, vitamins, and minerals, and maintain a moderate degree of ram publicity. In the first 30 days of breeding, gradually supplement the corn, bean cake, wheat bran, bone meal and other concentrates, add 0.5kg daily, melons and other green and white succulent feed 1.5kg, 2 eggs, for clean drinking water . Non-mating season rams should be grazing alone.
The initial mating age for lambs with moderate mating is more than 10 months, and the ram is required for about 8 months. 25kg of meat sheep and 35kg of dairy goats. Two births a year can be arranged for breeding in the spring and autumn seasons. When the ewes are in estrus, they show redness in the peritoneal cavity, flow of mucus, upward tilting of the tail, continuous vocalization, instability, and reduced feed intake. At this time, breeding should be timely. First-time ewes should be given later, middle-aged ewes should have intermediate stages, and old ewes should be bred earlier. The proportion of natural mating males to females is 1:20 to 30; the ratio of artificially assisted male to female mating is 1:60 to 80. Artificial insemination can also be carried out, methods must be scientific, and time must be correctly mastered. It is required to repeat the breeding within 12 hours to 24 hours after the first mating, which will help improve the conception rate and the number of litters. In this way, two or three-year-old children can be born each year. The average number of litters per litter per year is more than two, and high-yielding ewes can reach 3 to 4 sheep.
The artificial aphrodisiac method is normal for the ewes' genital organs, they do not have estrus for a long time or miss the estrus period, and do not have fertilization, and artificial priming can be performed. Reduce unnecessary economic losses.
Vaginal deep hormone implant method will be soaked with progesterone medroxyprogesterone 50mg ~ 70mg, or progesterone 150mg ~ 300mg of sponge placed outside the mouth of the cervix for 14 days, sponge with cotton thread tied, leaving the line to the vulva The mouth part can be seen, and the sponge will be pulled out after 14 days. After the withdrawal of the drug, 400 to 501 international units of pregnant horse serum were injected, and heat was transmitted from 28 hours to 32 hours. Each insemination day or the next day was inseminated once or spontaneously.
A few days after the end of the estrus of the prostate, the ewes can be injected into the uterus or intramuscular injection of prostaglandins. After 2 days to 3 days, the estrus can be bred.
Supplementary aphrodisiac supplementation supplementation in the ewes 30 days before mating can promote estrus in ewes and increase ewes fertility rates.
Hormone Induced Multiple Lambs Increased Ovulation Number 12 to 13 days of the estrus cycle of the ewes, intramuscular injection of 600 IU to 800 IU of maternal serum, mating immediately after estrus, and intramuscular injection of chorionic gonadotropin 500 IU on the same day ~ 700 international units, can promote the discharge of dozens of eggs, to achieve the purpose of multiple births.
Liyao is also a hormone drug, which can promote the development and maturation of egg cells to increase the ovulation number of ewe. At present, several units at home and abroad have developed and produced dual lambs. Shanghai Biochemical Institute produced this kind of thing, the first injection 7 weeks before the ewe mating, the second injection after 3 weeks interval, each subcutaneous injection of 2 ml of each lamb subcutaneous lamb. The Chinese Academy of Sciences Institute of Animal Husbandry developed two kinds of water and oil additives. Emulsion of water type was injected twice a week for 5 weeks and 2 weeks before breeding. Each dose was 1 ml. The oil formulation was injected 2 weeks before the ewes were mated and each injection was 2 ml. Ewes can be bred when they are estrus. According to data, the use of the above-mentioned several lambs can increase the lambing rate by 50% to 57%, and the effect is significant, but the application effect is affected by factors such as body condition of the ewes, breeding age, parity, nutritional status, and other factors. The effect is better than that of the single-family cultivar. The ewes with good nutrition are better than the ewes with poor nutrition. The ewes of young and young are better than those of frail and sick ewes. The technology of multiple lambs induced by multiple lambs is simple, low cost, and effective.
The gestation period for the ewes who do a good job of confinement is generally around 150 days, and they enter the delivery room one week before the delivery. Before the production of real estate to do a thorough cleaning and disinfection, confinement workers to cut short nails, grinding and disinfection. Wash the genitals, tails, and anus of the ewes before labor and disinfect them with 1% potassium permanganate or Lysol, and dry them with a cloth. Lambs should be painted with 5% iodine after the lambs are produced. To prevent infection. If labor is to be delivered during labor, it is not necessary to correct them in time to ensure the smooth output of the lambs. In the event of a micro-death, promptly heal the mucus and fetal water in the respiratory tract, clean the nostrils, and inhale into the nostrils. Raise the lamb and place it on the chest or take an artificial respiration. If the lambs are frozen in the winter, they must be moved into the greenhouse in time and put in a bath of 33°C to 40°C for about 30 minutes. The head must not enter the water, and then wipe dry and dehumidify with a cloth. It has been proved that when 2 ml of cloprostenol is injected 3 days before the pre-production, 85% of the ewes can give birth within 48 hours, so that the ewes are born during the day, easy to care for and improve the survival rate of the young sheep.
Strengthen the breeding of newborn lambs and early weaning
Lamb's meticulously reared mutton eats colostrum as soon as possible after birth and enhances maternal antibody of the lamb to ensure the health of the mutton; about 10 days after birth, the feed for hanging and sauteing can be used to feed the young sheep and feed them. Crushed grass; 20 days old feed feed such as corn, wheat bran, etc.; feed one month later with wet concentrate; 2 months old with grazing, supplemented with concentrates. More sunshine, more exercise. Multiple lambs can be fed to ewes or ewes of dead lambs. In the absence of milk ewes or ewes that cannot be found on behalf of them, lambs are fed manually. Method: 500 ml of healthy milk, 10 ml of cod liver oil, 5 g of salt, and appropriate amount of magnesium sulfate. Preheated to 38°C before feeding, now with feeding, 6 times a day for 30 days after birth, 50 ml each time; 40 ml for 4 days after 40 days; 150 ml for 2 days after 60 days, feeding First, use a bottle, a breastfeeder, and drink after training. For male lambs that are not used for breeding, they are ligated and dressed for 10 to 15 days postpartum.
When weaned ewes are properly weaned and bred early, lambs should be weaned at about 4 months of age, and weaned lambs that produce two lambs a year can be earlier, but lambs that are poorly developed and are planned to be used for seeding can extend the weaning time appropriately. Before the weaning, we must strengthen the feeding management, generally adopt a weaning method, and gradually wean the artificial feeding suckling sheep after 10 days. Weaned mutton still need to be carefully reared. The first estrus of the ewes is generally 1 month to 1.5 months after delivery. The sheep is first weaned after treatment, and the ewes are treated with hormones for 10 days. After 10 days, gonadotropins can be injected to induce ovulation and timely fertilization. Increase the number of births per year.
Strengthen Management Work Sheep Shelter Keeping cool in winter and cool in summer, sheltering from the sun, not leaking from rain, and not getting wet; reducing the impact of weather changes on herds. Sweep the sheep house every day and change the grass to keep it clean and dry. Each month in the sheep house and in the house, the empty column is sprayed once with the new Wang 2000 times liquid; it can also be used alternately with other disinfectants to avoid drug resistance and prevent the occurrence of the disease.
Epidemic prevention and deworming Regularly vaccination of the flock In order to prevent the occurrence and prevalence of certain infectious diseases, the flock is purposely and systematically immunized according to immunization procedures to prevent the disease from occurring. Generally used biological agents, such as vaccines, toxoids and so on. There are intramuscular injections, subcutaneous injections or aerosols. The vaccinated sheep can generally produce immunity within a few days to a week, and the immunity can last for six months to a year.
Before inoculation, several issues need to be noted: First, develop a vaccination plan based on the recent occurrence and prevalence of various infectious diseases in the local area. The second is to check the health status of the inoculated sheep in detail. Third, there is no quality problem with the vaccine. The fourth is to arrange sufficient equipment, disinfectant drugs and anti-allergic drugs and personnel arrangements.
Regular deworming should be preceded by the onset of the season, with drugs to the sheep for preventive deworming, such as albendazole and ivermectin, etc. for internal or intramuscular injection. Medicinal bath is also one of the effective measures to prevent ectoparasites.
Implementing drug prevention Some diseases can be drug-prevented by adding drugs—health-care drug additives—to population drug prevention in feed or drinking water. Sulfonamides, antibiotics, and nitrofurans are commonly used. Note that adult sheep have a toxic reaction to oxytetracycline.
Correct use of the vaccine The bottleneck should be checked before use, and the manufacturer, expiration date, batch number, number of immunizations, and place of time should be noted. The temperature during transportation and storage is the same, live bacteria should be frozen below 0°C, and inactivated bacteria should be stored under 4°C to 8°C. Once the vaccine is opened, it should be kept in a cool place or in a preservation box and used up on the same day.
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