Sheep always miscarry, why? Do you know that?/You know what?

There will always be some ewes who miscarry for no reason. Looking at the molded lambs makes sheep farmers very sad, and it also seriously affects the benefit output of raising sheep. There are many reasons for ewe abortion, such as infectious diseases, improper feeding management, mechanical injury, reproductive tract diseases and so on. Today, Bian Xiao introduces the causes and prevention of ewe abortion in detail, hoping to help the majority of sheep farmers!

1, infectious diseases

Brucellosis (also known as brucellosis, brucellosis or brucellosis, etc. ) is the main infectious disease that causes abortion of ewes, and it is a serious zoonotic disease. After the ewe is infected with brucellosis, the first child will miscarry, but most sheep will not miscarry after the second child, but there will be postpartum problems such as premature delivery, weak lamb, placenta retention, mastitis and metritis. In addition, ewes will be infected with bacteria for life, and lambs will also be infected with brucellosis. In addition to brucellosis, other infectious diseases that can directly cause abortion in ewes include chlamydia, salmonella, campylobacter and leptospirosis, but these infectious diseases are relatively low in incidence, less harmful and easier to prevent.

Prevention and control: When the ewe miscarries, sheep farmers should be more vigilant and should first check whether it is brucellosis. Breeders must protect themselves when touching fluid products, wear masks and gloves, and avoid touching with their bare hands. The sheep located in the high incidence area of brucellosis or newly introduced sheep shall be inspected at least twice a year, and the sheep suffering from brucellosis shall be treated harmlessly. When it is found that there is no brucellosis in sheep for three consecutive years, the inspection can be changed to 1 time per year. In areas with high incidence of brucellosis, sheep can be immunized with attenuated brucellosis vaccine (not recommended in Bian Xiao). During the period of immunization, breeders also need to be well protected, because people are often infected with attenuated brucellosis vaccine.

1, improper feeding management

Improper daily feeding management is also a major cause of miscarriage of ewes. Poor sanitary conditions, high humidity, high temperature in summer and low temperature in winter will all affect the health of ewes and cause miscarriage; The ewe is kept in a narrow shed for a long time, and does not get enough exercise and light, which will affect the ewe's physique and increase the probability of miscarriage and dystocia; Ewes eating moldy, rotten, acidic or toxic forage will lead to serious poisoning and abortion.

Prevention and control: do a good job in sanitation and disinfection of pens, strengthen ventilation of sheep houses, reduce humidity and toxic and harmful gases, do a good job in heatstroke prevention and cooling in summer, and do a good job in cold protection and heat preservation in winter; The ewe house should be equipped with a sports field to make it fully active and receive light, and grazing can be carried out regularly if conditions permit to enhance the ewe's physique; The forage for ewes must be strictly controlled, and it is forbidden to feed moldy, rotten, acidic and toxic forage.

3. Mechanical damage

When ewes have mechanical injuries, they are prone to miscarriage. When the space of ewe shed is narrow or the door is narrow, it may be crowded, causing harm to fetal sheep; Living in a bamboo sheep bed for a long time will lead to hoof loss and abortion; Grazing ewes are also more likely to miscarry when they are whipped with whips and sticks; Pregnant ewes have a high probability of miscarriage due to long-distance transportation or bumps; Pregnant ewes are harassed and crawled by rams, which may also lead to miscarriage.

Prevention and control: It is best to keep ewes in a small enclosure (5~ 10), leaving enough space and reasonable design to enter and exit, and avoiding using bamboo sheep beds; Whipping, clubbing and scaring away ewes, whether in captivity or grazing, should be prohibited; Try not to transport ewes after pregnancy, especially in the middle and late pregnancy; The ram and ewe are divided into circles to prevent the ram from harassing and climbing the pregnant ewe.

4, reproductive tract diseases

When ewes suffer from reproductive tract diseases such as metritis and vaginal prolapse, it may also lead to miscarriage.

Prevention and treatment: ewes should do a good job of nursing and anti-inflammatory after delivery, minimize the occurrence of metritis, and should be treated before breeding. Reserve ewes should not be bred too early, and the first child should not be bred with oversized rams. After mating, exercise and feeding management should be strengthened to reduce the occurrence of vaginal shedding. When vaginal shedding occurs, it can be cleaned, reset and stitched. For ewes with frequent vaginal shedding, they should be eliminated in time.

Conclusion: After ewe abortion, sheep farmers should be vigilant, and on this basis, find out the specific reasons of abortion and actively respond. The improvement should be improved, the ewes should be treated quickly, and the ewes that should be eliminated must be eliminated!