What is the effect of heat stress on pigs?

The heat shock reaction in summer has a great impact on pigs, some of which are obviously good, while those that are not obvious will have a great impact on the later stage of pigs, so what are the aspects of these effects? Let's take a look at these effects with the pro-agriculture network.

1. Slow down the growth of pigs

When the heat stress reaction of pigs is more obvious, it is mostly concentrated in August-September, which is the hottest period in many places. At this time, the pig will have a significant decline in eating this area, but the metabolism of the pig will increase significantly, the pig will be unable to keep up with the nutrition, and the growth of the pig will be delayed. If the feed fed at this time is unreasonable, it is very likely to lead to weight loss of pigs, so all aspects of nutrients in summer must keep up.

2. Reduce the immunity of pigs.

Many friends only feel that the incidence of illness in pigs will increase in summer, and they always think that diseases are prone to occur in summer. in fact, this has a lot to do with the decline of pigs' immunity caused by heat stress. Heat stress will lead to slow operation of the immune mechanism of pigs, and even lead to the reduction of immune cells, while external bacteria become extremely active, which is the cause of pig disease. Therefore, summer is extremely important for the temperature and hygiene control of pigsty. If it is not done well, it will lead to frequent occurrence of pig disease in the later stage.

3. Reduce the reproductive ability of sows.

Heat stress is also an important cause of summer infertility in sows. Long-term heat stress will reduce the probability of pregnancy in sows, and even if pregnant, it will lead to miscarriage and dystocia due to the decline of uterine function. seriously, it will also affect the fertility of sows for a long time, resulting in a decline in the number of pups. The reason is that heat stress makes sows unable to provide a good growth environment for pig fetuses, which leads to the formation of stillbirths in all aspects.

4. Reduce the insemination ability of boars.

Heat stress also has a great effect on boars. If it lasts for a long time, it will lead to decreased libido and reluctance to mate. If the body temperature is higher for a long time, the semen concentration of the boar will be significantly reduced, and even the quantity will be reduced. Because at this time the boar is very difficult to receive sexual stimulation, the pig body received a low degree of response, then the quality and quantity of production must not be guaranteed. Some boars may even fail to inseminate because they last too long.

Of course, there must be more cases of heat stress, which are relatively less obvious. We must pay attention to the defense measures against heat stress in summer. Generally, as long as the temperature is well regulated, heat stress will rarely occur.