What is the reason why half of the sows are stillborn during this period of time?

Jiangxi Huang Xidong: excuse me, teacher, why do first-born sows have mastitis? It hasn't been born yet. It will be born in two or three days.

Answer

In the late stage of pregnancy, the fetus increased sharply and oppressed the abdominal aorta of the sow, resulting in venous reflux of the hindquarters, coupled with nutritional reasons leading to tissue osmotic pressure and edema of the hindquarters and several pairs of nipples behind, which were prone to injury and infection. at the same time, the lack of exercise during pregnancy is the main problem of sow qi and blood, which can be replenished by Domenol in the later stage of pregnancy.

In addition, we should pay attention to the traumatic infection in the later stage of pregnancy, turning group and going to the delivery bed.

Qinzhou + Liu Wu: during this period of time, half of the sows are stillborn. What is the problem? Blue ear care has been done.

Answer

The stillbirth rate of more than 50% is indeed too high. Generally, if the stillbirth caused by blue ear is more than 2%, it is proved that there is a slight fluctuation, but too many stillbirths can not be arbitrarily regarded as a simple blue ear problem. The diagnosis of the disease is combined with immune procedures, clinical symptoms, case anatomy, feeding management and laboratory testing for differential diagnosis.

The occurrence of too many stillbirths can be analyzed from the following aspects:

(1) the pig farm immunization program, sows in the backup stage of classical swine fever, Japanese encephalitis, small, pseudorabies must be done; a sow Japanese encephalitis, small is not well done, there will be relatively many stillbirths, and many mummies.

(2) stressful factors, such as heat stress, will not only lead to different stages of the process, but also lead to long labor process and stillbirth.

(3) the effect of mycotoxin

(4) the process of labor is too long: a variety of reasons, such as improper selection, improper attack, insufficient qi and blood of sows, and untimely delivery lead to stillbirth, but most of these stillbirths are fresh stillbirths, the fetus is mature, and there is no corruption, deterioration or mummy fetus. And there are no pathological changes in fetal internal organs.

At present, most family farms due to rapid resumption of production, improper introduction, backup breeding and health management do not have strict procedures, such as most pig farms are not immune to Japanese encephalitis, small and produce a large number of stillbirths or even a whole litter of stillbirths. Pig farms should be combined with their own actual situation to analyze the reasons and do effective prevention and treatment.

Shen Zhixiong, Henan: if one of the pigs in the same column is infected with blood worms, will it infect the pigs in the same column or spread it in a large area?

Answer

In pig production, blood worms mainly refer to eperythrozoon and Toxoplasma gondii, which generally do not contact transmission directly, but mostly indirectly, such as mosquito vector, unclean and unsterilized needle injection, mass occurrence in the same column is mainly due to the high feeding density and poor sanitary conditions of the fence. High temperature and humidity stress caused the whole population to occur in the column.

Hunan Zhou Huaxiong: can the first sow get a live vaccine or inactivated vaccine (blue ear or mycoplasma) after 100 days of pregnancy? is there a big stress reaction? Does it have any effect on later birth?

Answer

The blue ear vaccine of sows had better avoid the heavy pregnancy, and the mycoplasma vaccine would be more stressful to pigs, and could be immunized simultaneously with piglets at 14 days after delivery.

Jiangxi Yinlin: will it be easier to cool the delivery room with dripping water and cause piglet diarrhea? is there a better way to cool down and avoid piglet diarrhea?

Answer

Generally speaking, the hardware measures of different pig farms are different, and the cooling measures that can be achieved are also different. the temperature control of pig farms is a systematic control, and a single cooling measure will have certain advantages and disadvantages. Dripping cooling can be combined with fan ventilation to achieve a certain balance between humidity and temperature.

Sichuan Wei Chuanzhi: sows give birth to piglets bite piglets what causes and how to treat

Answer

Biting one-litter sows is more common, especially now the use of three-yuan sows, sows' pain in the process of giving birth, delivery stress, heat stress, resulting in lack of milk in the later stage, milk release pain and so on.

Prevention tips: a sow enters the delivery room ahead of time; improves sow milk; puts a muzzle on the sow; if it is particularly poor motherhood, piglets are recommended for malignant bites.