1. Why is the intake of sows in summer low and how much is normal?
Pigs have no sweat glands and are not good at regulating body temperature through skin evaporative heat dissipation. When the raising temperature of the environment exceeds the optimum temperature range, the pig's heat production is greater than heat dissipation. Pigs not only enhance respiratory evaporation and radiation heat dissipation, but also reduce body heat by reducing feed intake. Produced to regulate body temperature balance. If body temperature balance cannot be maintained by increasing heat dissipation and reducing heat production, the body temperature will increase and the appetite will decrease.
When the months of 6, 7, 8, and 9 are high, the feed intake of sows is generally reduced by 1/3, and the feed intake (day) can be reduced by about 2 kg. When the climate is suitable, the average feed intake of the sow during lactation is 5-6kg, and the average feed intake of summer sow is 4-5kg or less. Therefore, it is normal for sows to eat low in summer. The key to solving the intake in summer is cooling the environment. If the environment cannot be improved, it must be changed by increasing the feed nutrient concentration, keeping the breeding management, and nursing. The adverse effects of feed intake. This article comes to the pig farm power network
2. The reasons behind constipation in sows in summer
The main cause of constipation is slow bowel movements, weakness, and long retention of feces in the intestine. In the late pregnancy, the fetus oppresses the intestine, causing slow bowel movements; after giving birth, the body is in a state of relaxation, and the peristalsis of the intestine is also slowed down. Therefore, prenatal and postpartum sows are prone to constipation. The prenatal and postnatal feeding patterns are very important. Direct feeding of breast milk during pregnancy and unscientific prenatal and postpartum feeding will exacerbate constipation. In summer, the sow suffers from severe heat stress, which affects the function of the gastrointestinal tract; postpartum loss of appetite and low intake; postpartum inflammatory infections are more likely to cause constipation.
From the perspective of Chinese medicine, constipation means that internal heat cannot be expelled, and heat stress in summer further exacerbates internal heat in the sow. The bran has a laxative effect, but the amount is less effective, the amount of multiple metabolic heating is severe and reduces the feed nutrient concentration; magnesium sulfate and other Epsom salts have a good effect, the price is low, but the long-term addition of feed can cause uterus, anus, etc. Reduced smooth muscle contraction (danger of miscarriage), and exhaustion, will lead to weakening of the intestinal contraction itself and dependence, and dependent dependence constipation. Therefore, the incidence of constipation should be reduced by reducing constipation triggers and regulating gastrointestinal health, instead of relying solely on feed to eliminate lactating constipation.
3, why the sow in the summer is more inflamed, how to control
Sows consume a lot of physical labor, poor postpartum weak resistance; during the birth process, the reproductive tract is severely damaged; about 4 days after childbirth, the cervix occipital is slowly closed and the bacteria are easy to invade. High summer temperatures lead to an increase in the production of sows, a weaker postpartum, and bacteria that are more likely to breed. Therefore, postpartum sows have more postpartum inflammation in summer. This article comes to the pig farm power network
Once the inflammation occurs, it is difficult to cure, especially chronic endometritis, so the disease of the sow reproductive tract is more important than prevention. 1) Antibiotics can sterilize and sterilize, but the long-term abuse of antibiotics has led to bacterial resistance, so it is unclear which antibiotic is effective and how much it adds. Moreover, because of the national regulations and low feed intake, it is difficult for the medicines in feeds to play a preventive role. It is necessary to rely on the pig farms for their own health care, which is prone to the spread of antibiotics and affect the health of the sows. Because antibiotics can not only damage the body's liver and kidney function, affect the fetus, but also damage the microecological balance within the vagina and affect the body's ability to recover. 2) The use of antibiotics to sterilize is only a form of treatment. Without starting from the source, it can lead to the inefficiency of antibiotics. 3) It should be through nutrition to reduce stress, enhance sow physique, shorten labor, increase body self-purification and recovery. However, if the sanitation or disinfection is not done well, the sows are surrounded by pathogens, and it is difficult to achieve good results only by means of nutrition. Therefore, we should focus on feed instead of relying on feed. The focus should be on nutrition (good feed) and hygiene to reduce the infection of pathogenic bacteria, supplemented by effective, low-dose antibiotics to really play a preventive role.
4 Reasons for poor sow's milk
The nutrients needed by the sow's milk are mainly fed, so the quality of the milk is determined by the quality of the feed. However, there are many factors that can affect the quality of milk, so that the feed can not play a good efficiency: 1) low feed intake, summer heat stress, improper management of prenatal and postpartum feeding, partial fertilization of sows during pregnancy, sow inflammation Constipation will affect the sows' feed intake during lactation. The low-yielding milk intake requires less nutrients and less milk. At this time, the sow's body will mobilize fat to produce milk, resulting in excessive fat in the milk and diarrhea in the piglets. 2) Postpartum mastitis and endometritis not only affect the milk and thus affect the piglets' health, but also lead to unhealthy piglets through pathogens. 3) Different sows have different parity and different milk quality. 1, 2 fetuses, sows with 3, 4 and 5 litters of more than 6 children. 4) The milk production capacity is related to the sucking capacity of the piglets, with a large number of piglets, a strong suckling ability of the piglets, and a large milk production capacity. 5) The quality of milk is generally judged by the piglets' long speed and pull, diarrhea, etc. However, the piglet's long speed and resistance are also related to the environment, birth weight and litter size. This article comes to the pig farm power network
5, why sows in the summer have poor reproductive performance
Excessive heat build-up cannot be dissipated in the body and it is easy to keep the body temperature high, leading to changes in the neuroendocrine system of the pig, and affecting sow reproductive performance:
Heat stress affects feed intake of lactating sows, which leads to a decrease in milk production. Suckling pigs have poor growth, diarrhea, and poor resistance.
The stress resistance of sows during heat stress is poor, and postpartum infection is easy. High-temperature and high-humidity environment bacteria are prone to breeding. Therefore, postpartum sows have more postpartum inflammation in summer.
Sow intake during heat stress reduces constipation and exacerbates low feed intake and inflammation.
Heat stress leads to ovarian function and sexual dysfunction, young sows have delayed puberty and sexual maturation, post-weaning estrus estrus is delayed, hidden estrus does not even estrus, and conception rate drops significantly. When the temperature reaches above 32°C, sows are bred. About 20% of the pigs are infertile or repeat estrus. The abortion rate increases; the high temperature reduces the number of embryos survived within 8 days after mating, followed by a few days after embryo implantation. After 11-20 days, it is particularly sensitive to heat. After 20 days, it has a stronger heat-resistance capacity; heat in the latter part of pregnancy can reduce the number of litter size and live piglets in sows by 1-2 heads.
6. How to raise sows in summer
Summer sows have low feed intake. It is difficult to increase feed intake when the conditions of the sheds are set. It is necessary to increase nutrient concentration in feeds to increase nutrient intake. Therefore, it is best to use high proportion, high quality, and high quality in summer. Nutritive lactating sows improve milk quality and improve sow health.
Taking a high level of nutrition, the same intake of nutrients is higher. At the same time, the appetite of sows is improved and feed palatability is improved through various ways. It can relieve stress, improve sow's constitution, shorten production process, increase body's self-purification and recovery function from the aspect of nutrition, at the same time, cooperate with prenatal and postnatal care and feeding and management, treat both the symptoms and the symptoms, and systematically solve the problem of summer sows.
Therefore, in the summer, environmental cooling, good nursing sow feeds, scientific feeding management, nursing care and health care are all indispensable and must be solved in many ways in order to effectively solve the problems of low feed intake, constipation, poor milk and reproductive problems.
Fish Collagen,Fish Collagen Powder,Fish Collagen Granules,Cod Skin Collagen
Ningbo Nutrition Food Technology Co.,ltd. , https://www.collagenworkshop.com