First, the sows produce calves during the day 1 to 2 days before the sow's labor, 10-11 am, intramuscular injection of prostaglandin injection 1-2 ml so that 98.2% of sows on the next day During childbirth, the effective rate is up to 100%, and the survival rate of piglets is above 98%. Second, the sows in the spring and autumn sow farrowing arrangements for the spring and autumn, can improve the survival rate of piglets, to achieve two-year production of five children. The first child can be arranged for breeding in November-December and will be born in March-April the following year. The second child will be placed in May-June, and the child will be born in September-October. Third, increase the sow calving rate sow 3 days after weaning to estrus, each day to feed each vitamin B, carotene 400 mg each, vitamin E 200 mg, half-dose after mating, and then fed for 3 weeks, each child Can produce 2-3.
Powder Trolley Fire Extinguisher
Powder Trolley Fire Extinguisher,Powder Fire Extinguisher External Type,Wheeled Dry Powder Fire Extinguisher,Dry Powder Trolley Fire Extinguisher
JIANGSU NEW FIRE FIGHTING TECHNOLOGY CO.,LTD , https://www.newayfire.com