1. Breeding sheep selection and retention of male and female breeding sheep from large lambing and fast-growing sheep, male sheep with large body size, female sheep with large lambing, and large milk yield are the main indicators of selection. 

2. ewe mating time can be in early March, lambing in August that year; Re-breeding in early September, and lambing in early February of the following year. It is better to breed sheep in 40 days, to concentrate on lambing, conducive to management and production. 

3. ewe labor signs ewe near childbirth, nipples stand out, with the hand can squeeze out yellow milk, vaginal swelling flushing, mucus outflow, frequent urination, sometimes back to the abdomen. 1 ~ 2 hours before delivery, we are reluctant to move, front hoof pawing the ground, standing uneasily, constantly sushi and chirping. Four, ewe prenatal preparation will be clean delivery room, walls, and ground with 4% caustic soda solution or 2% ~ 3% Lysol spray disinfection. 

The delivery room is required to be sunny, sheltered from the wind, dry, and ventilated, and the temperature should be kept at about 10℃. Lay hay on the ground, prepare scissors for labor, washbasin, towel, wipe cloth, iodine, and lighting equipment, etc. 

Cut off the wool around the udder and inside the hind legs, wash the udder with warm water and squeeze out the first few drops of colostrum, then wash and disinfect the tail root, vulva, and anus of the ewe. Five, ewe delivery personnel should cut nails short before delivery, wash hands with soap, and wear good work clothes. 

Lambs should be cleaned of mucus from their mouths, nostrils, and ears immediately after birth. Lamb body mucus can be licked by the female sheep, which is conducive to the female sheep recognizing the lamb, at the same time to prevent the lamb from catching a cold, the umbilical cord broken end with 5% iodine tincture solution disinfection. 

Postpartum care of ewe About 1 hour after the birth of the ewe, the lamb's lanugo will generally be discharged by themselves. After the discharge, it should be picked up in time to avoid being swallowed by ewes. 

If postpartum 3 ~ 4 hours still do not see fetal discharge, then should be done fetal stripping surgery. About 1 hour after giving birth, give ewe some warm water and 15 grams of salt every day.