Heat stress symptoms of pigs

Pig heat stress refers to the sum of non-specific physiological responses of animals in high temperature environment to thermal environment. In the process of raising pigs should be carefully observed, if there are symptoms of pig heat stress should be timely treatment. So what are the symptoms of pig heat stress?

What are the symptoms of heat stress in pigs

Mild cases have abdominal asthma, dyspnea, elevated body temperature, skin flushing, severe cases died of heatstroke, especially in summer, the temperature is too high, too obese, and individual breeds will appear stress, food intake will decrease, thus affecting the production performance of pigs, growth and development and speed, seriously affecting the economic benefits of pig farms. Its effects are as follows:

1. Stress of breeding pigs: sows showed decreased ovarian function, decreased conception rate, increased return rate caused by implantation failure of fertilized eggs, insufficient supply of oxygen in late pregnancy, resulting in fetal death and low birth vitality of piglets. the number of stillbirths increased, litter weight decreased, even abortion, stillbirth, etc.; boar libido weakened, semen quality decreased. For boars, high temperature makes the proportion of asexual pigs higher than that in normal temperature season, and the ejaculation of boars decreases, which is more likely to cause sudden death caused by heat stress; the appetite of lactating sows decreases, resulting in a decrease in feed intake, resulting in a decline in lactation and quality of lactating sows, and finally secretes fat emulsion transformed from body fat, resulting in diarrhea and slow growth of piglets, affecting the survival rate and weaning weight of piglets.

two。 Growing pigs: reduce feed intake caused by heat stress to reduce body heat production to regulate body temperature balance, cause organic diseases, increase feed consumption, slow down growth rate, reduce feed conversion rate, and increase production costs. thus affecting the weight gain and resistance of pigs to the outside world.

Second, how to deal with pig heat stress?

1. To reduce the heat radiation of pigs, pig farms should be built near water sources or woods, the top of the pig house should be covered with sunscreen, the front of the pig house should be covered with vines, and the outer wall of the pig house should be coated with lime to enhance direct sunlight.

2. The pig house should be well ventilated and ventilated to ensure that the windows of the pig house are all open and the air circulates quickly, which is helpful to the heat dissipation of the pig. High-power electric fans can be installed in the pigsty to speed up the circulation of air.

3. The piggery should take cooling measures and often wash the ground with water, but it is necessary to sweep the stagnant water and sewage in time. If possible, a spray device can be installed in the piggery to increase the humidity of the air, which is conducive to the cooling of the principle of vaporization and heat absorption.

4. Provide adequate clean drinking water, as the amount of drinking water of high-temperature pigs will increase, adequate drinking water will help pigs dissipate heat; in addition, you can choose to add traditional Chinese medicine to the water to prevent heat stress in pigs.

When summer is coming, timely cooling measures in pig farms can effectively reduce the incidence of heat stress in pigs. If there is no heat stress in pig farms, the production capacity will naturally go up.