What are the symptoms of ewe pregnancy? A few months pregnant to give birth to a lamb? How many babies are born a year? How many lambs can you have at a time?

When many beginners raise sheep, they do not know how to judge whether the ewe is pregnant, nor do they know how to give birth to lambs in the months of pregnancy, which is necessary for farmers. If you do not understand this knowledge, it is likely to cause losses. So, today, the editor will show you what are the symptoms of ewe pregnancy? A few months pregnant to give birth to a lamb? How many babies are born a year? How many lambs can you have at a time?

There are four main changes in ewe pregnancy:

1, ewe ewe estrus breeding, after a month does not appear estrus phenomenon, and increased appetite, fat gradually longer, the fur shiny, indicating that the ewe is pregnant.

2. After pregnancy, the ewe is gentle, cautious and likes to be quiet.

3. With the extension of pregnancy time, the abdominal circumference of ewes increased gradually, and the respiration accelerated.

4. When you are 2 or 3 months pregnant, you can touch a lump under the abdomen in front of the breast. At the 4th and 5th month of pregnancy, the fetus grows rapidly, the ewe's abdomen becomes larger, the nest collapses, the breast enlarges, the action is careful and slow, and the temperament is gentle. This stage is the late stage of pregnancy, to strengthen nutrition.

How many months are the ewes pregnant to give birth to lambs?

The production time of ewes varies according to the breed, nutrition and number of lambs. The pregnancy period of sheep is 146-161 days, with an average of 153 days, and that of goats is 146-157 days, with an average of 150 days. Two births a year, three births in two years, or more than one lamb in the first birth, and two or three lambs are often born after the second birth. Among them, the high-legged small-tailed Han sheep can be conceived at the age of 6 months, two births a year or five births in three years, each with 3 to 5 lambs, more than 8; Boer goats have early sexual maturity, four seasons of estrus, generally give birth to three births in two years; small-tailed Han sheep can be conceived at the age of 6 months, giving birth to 2 births a year, 2 babies per year, and 8 babies more often.

How to feed pregnant ewes is more reasonable?

1. About one month after the first month of pregnancy, fertilized eggs are easily affected by external feeding conditions before placenta formation. Feeding ewes with spoiled, moldy or toxic feed can easily lead to early embryo death.

2. After two months of pregnancy, with the increase of the month of pregnancy, the fetal development is gradually accelerated, and the feeding amount of concentrate should be gradually increased. 40% of soybeans, 30% of corn, 20% of barley and 10% of wheat can be soaked in warm water for 6 ~ 8 hours and ground into pulp. then add 10% 15% soybean cake, 5% bran and 1% salt (salt can be used instead of salt bran). Succinctly and quickly also supplement trace elements), 3% 5% bone meal, feed pregnant sheep 2 ~ 3 times a day, each time each sheep is fed 50 ~ 100 grams of mixed concentrate, and the young ewe should appropriately increase the amount of concentrate feeding.

3. After 3 months of pregnancy, the total volume of forage grass for pregnant sheep should be properly controlled, and less forage and concentrate should be fed to sheep.

4. After 4 months of pregnancy, the fetal weight has reached 60%-70% of the birth weight of the lamb, and the ewe has to store a certain amount of nutrients for postpartum lactation.

5. Ewes should properly control the feeding amount of coarse fodder for about a month before delivery, and feed some soft fodder with soft texture as far as possible, such as nitridation, microsilage or salinized straw, green succulent feed, and increase the amount of wheat bran in the concentrate for intestinal convenience.

6. From 2 to 3 days before delivery, ewes have good physique, large breasts and edema under the abdomen. The amount of feed feeding should be reduced from the original diet to prevent ewes from having too much milk or too much milk in the early stage of delivery, which will lead to mastitis, milk regurgitation and dysentery in lambs.

Postpartum feeding and management of ewes

Ewes have weak postpartum physique and low body resistance. Due to the consumption of a lot of water and physical strength, the performance of thirst, strong appetite, but at this time the digestive system has also undergone great changes, digestive function is very poor, must be carefully raised, reasonable diet, ewes can restore their physique as soon as possible.

Ewes are physically weak after delivery, and there is a great loss of water, salt and sugar in the body. In order to alleviate the weakness of ewes after delivery, and supplement water, salt and sugar, which is beneficial to the lactation of ewes, brine bran soup should be fed in time, 200-500g of bran, 10-20g of salt and 100-200g of brown sugar. Add appropriate warm water to mix evenly for sheep to drink.

1. Environmental hygiene is the guarantee

Ewes in labor should wash the contaminated parts of the vulva, breast, tail root and hindquarters with warm water and replace them with clean and soft grass mats to prevent diseases of the birth canal and reproductive organs. In the first few days of lambing in winter, the temperature in the house should be controlled around O ℃ to prevent moisture, and the relative humidity should be 50% and 70%. Sunny weather should be ventilated, but we should pay special attention to the attack of thieves.

2. Reasonable diet is the foundation

Pre-lactation ewes need more protein and minerals than during pregnancy, need to supplement protein, calcium and phosphorus, feed more green feed, succulent feed and feed rich in protein, vitamins and minerals, and pay attention to increase ewe exercise.

When matching the diet, in addition to ensuring that the amount and proportion of protein, energy and other nutrients required are sufficient and reasonable, it is also necessary to consider feeding more fresh, juicy and digestible feed, such as beet, beet dregs, carrots and so on. Succulent feed can not only increase palatability, but also supplement vitamin deficiency, which has a good effect on promoting lactation.

For a period of time after the lamb is born, its main food is breast milk. Therefore, the higher the milk yield of ewes, the greater the average daily gain of lambs, the better the development, the stronger the disease resistance, and the higher the survival rate. The milk yield of ewes generally reached the peak within 4-5 weeks and decreased gradually after 8 weeks.

With the increase of milk production, the nutrients needed by ewes increase accordingly. If the nutrients supplied can not meet the needs, ewes will mobilize a large number of nutrients stored in the body to make up for them. Ewes with good lactation performance tend to be thin, which is an important reason.

Therefore, the supplementary feeding of ewes should be done well according to the number of lambs or the level of lactation.

Ewes with single lambs should be supplemented with 0.3-0.5kg mixed concentrate every day, and ewes with double or multiple lambs should be supplemented with 0.5-1.5kg every day. For ewes in good condition, concentrate can not be fed within 1-3 days after delivery, so as to avoid indigestion or mastitis. In order to regulate the digestive function of ewes and promote the discharge of lochia, a small amount of laxative feed can be fed (such as adding a small amount of wheat bran to warm water). The amount of concentrate feeding increased gradually after 3 days.

According to the daily gain of lambs during lactation, the nutritional requirements of ewes can also be determined. Generally, the average weight gain of lambs is 100g, ewes need 4180kJ/kg feed digestible energy, 36g digestible crude protein, 19g calcium and 1.2g phosphorus. For lactating ewes with 50kg body weight, the daily digestible energy should be 19000-24000kJ/kg feed, coarse egg self-quality 110-190g, calcium 7.5-8.5g, phosphorus 4.5-5.5g, salt 12-14g, carotene 8-10g.

3. Feeding and management is the key.

Ewes within 15 days after delivery is the period of physical recovery, this stage should not only meet the nutritional needs, but also be careful and scientific management in feeding.

When feeding, spray warm water on the mixed concentrate for a few minutes, soften it, then mix it with grass powder, silage and succulent feed, mix well and feed.

In the amount of feeding should be flexible according to the recovery of digestive function of ewes, to gradually increase the amount of feeding, to prevent stagnation or indigestion, generally 3-5 days do not feed concentrate, in case of indigestion or mastitis.

Five days later, each sheep was fed 300-400g of mixture, 0.8-1.0kg of hay, 2-3kg of silage, 200g-300g of beet and carrots per day. Always pay attention to the appetite, feces, mental state, action and gastrointestinal peristalsis of each ewe, and adjust the feed in time if you find something abnormal.

Be careful not to feed frozen, moldy and spoiled feed. Ewes within 10 days after delivery should drink warm water 2-3 times a day, preferably with soybeans into powder or chopped bean cakes, rinse with boiling water and drink sheep to ensure adequate milk.

According to the experimental report, drinking soy milk to ewes increased lactation, increased lamb survival rate by 3% Mel 8%, and increased weaning weight by 17% Mel 20%.

twelve