Preventive measures of lactation in ewes

Causes of lack of milk

1. The quality of the variety is poor. The breed quality of goats raised by farmers is uneven, and most of the ewes with lactation of the first fetus have sagging breasts, short nipples, fleshy breasts or dysplasia on one side of the breasts.

2. The methods of feeding and management are backward, the postpartum nursing work is not in place, and the nutrition level is low.

Prevention method

1. Choose a good breeding sheep

On the whole, the ewe should have a small wide head, a slender neck, a straight back, a wide rump but not too tilted, a well-developed abdomen, slender and strong limbs, no bad limbs, and shiny capillaries. The upper and lower circles of the breast are required to be hemispherical, the attachment is wide and deep, the volume is large, the skin is thin and elastic, the hair on the breast is short and sparse without coarse long hair, the nipple is moderate in size and inclined to the front, the breast is well developed, the breast well is thick, and the breast mirror is wide and deep.

2. Strengthen daily management

① scientific feeding. The sheep should be fed and drunk regularly. Adopt the principle of feeding coarse fodder first, then concentrate fodder, feeding dry fodder first, feeding wet fodder first, feeding fodder first and then drinking water. Within a certain period of time, feed should be kept relatively stable, feed should not be changed at will, and sheep should not be fed with rancidity, decay or toxic feed. At the same time, a certain amount of minerals and vitamins should be supplied in the diet.

② is fed with fresh and clean water. Water has a direct effect on the health and lactation of ewes. The daily water requirement of a first-born ewe accounts for about 10%-12% of body weight. Therefore, lambing ewes must be provided with adequate drinking water to meet the needs of body consumption and lactation.

③ can stimulate milk production by increasing light time and keeping suitable temperature and humidity in sheep shed. In summer, we should pay attention to heat prevention and cooling. Electric fans can be installed in the house so that the temperature does not exceed 30 ℃ and the humidity does not exceed 70%. In winter, we should pay attention to prevent cold and keep warm, so that the temperature in the house is more than 8 ℃ and the humidity is about 55%.

④ should do a good job in the prevention and control of epidemic diseases. Epidemic prevention should be done according to the immune procedure, and mastitis and external parasitic diseases should be prevented and treated in time.

3. Do a good job of postpartum nursing

① soaked the breasts and nipples with sterilized clean towels in warm water and squeezed the nipples with both hands.

② feed sheep with soybean pulp and warm water before and after delivery, which has a good lactation effect.

③ is injected with both antibacterial and prolactin drugs, such as Chanbao, etc.

4. Ensure adequate nutrition

Grass is the main feed for ①. The feed of sheep should be based on grass and properly supplemented with concentrate. Dietary roughage should be no less than 60% and concentrate no more than 40%. And follow five principles: 1. Miscellaneous. The feed should be rich and varied, and the green, coarse and fine materials should be matched reasonably. There are 5 kinds of green fodder, roughage and mixed concentrate fodder (including 2 species of Leguminosae), 2 species and 3 kinds of mixed concentrate respectively. 2. Quality assurance. Feed quality is good, fresh, forage grass can not bring dew (rain, etc.). 3. Enough. Each adult sheep has 4 kilograms of green feed, 1 kilogram of roughage and more than 0.5 kilograms of mixed concentrate per day. 4. Complete nutrition. The crude protein of the diet should reach 10%-14%, the crude fiber should be controlled within 20%, and mineral feed (or licking bricks) should be added to the diet. 5. The supply is stable. The supply of green and roughage should be balanced throughout the year, and the change of feed should be gradually transitional from less to more.

In the third trimester of ②, the fetus grows and develops rapidly in the mother, and about 80% to 90% of the fetal weight is formed in the late pregnancy, which requires adequate nutrition, such as insufficient nutrition, low birth weight of lambs, low survival rate, and decreased lactation ability of ewes. In addition to grazing, it should be supplemented with 0.5-1.0 kg of wild hay, 1 kg of silage, 0.5-1.0 kg of concentrate, 52% of corn, 25% of bean cake, 18% of bran, 1% of salt, 1% of stone powder, 1% of baking soda and 1% of premix.