Nutritional Management Measures for Heat Stress in Pig Farms During Summer
Release time： 2013-05-10
Source: Internet
As the scorching summer arrives, heat stress in pig farms is becoming increasingly severe. In addition to implementing effective cooling measures—such as installing fan-mist systems and drip cooling systems—we also need to address the damage caused by heat stress at the nutritional formulation level.
1 Increase the energy level of the diet.
Appropriately reduce the amount of carbohydrates in the diet and increase it by adding fat. 2-3% This helps increase the energy level of the diet, ensuring that pigs meet their nutritional requirements, and can also improve the palatability of the feed. Stahly Wait ( 1979 According to reports, adding appropriate fats is beneficial for pigs subjected to heat stress.
2 Adjust protein levels and supplement with a well-balanced array of amino acids.
Stahly ( 1979 Report: Feeding synthetic lysine instead of natural protein is beneficial for pigs, as lysine can reduce heat stress in the diet. Additionally, supplementing with methionine can significantly enhance the pigs’ tolerance to heat.
3 Regulate mineral metabolism
At high temperatures, the body increases its excretion of potassium and carbonates while decreasing its excretion of chloride and sodium, which can adversely affect the body's mineral balance. Liang Sunyi ( 1990 ) According to reports, in a high-temperature summer environment, the levels of blood glucose, blood calcium, blood sodium, blood potassium, ascorbic acid, and thyroxine differ significantly from those at optimal temperatures. P<0.01 ), there was a significant difference in plasma base reserves ( P<0.05 ), cortisol slightly elevated, albumin / The albumin-to-globulin ratio is reduced. Moreover, exogenous supplementation with readily absorbable minerals—especially potassium ions—plays an indispensable role in maintaining the body’s nutritional status and enhancing its disease resistance.
4 Regulate electrolytes and maintain acid-base balance.
Sodium and potassium salts are added to the diet or drinking water to regulate electrolyte balance. By adding organic acids such as lactic acid, citric acid, or fumaric acid to the diet, acid-base balance can be adjusted, thereby preventing or alleviating the adverse effects of heat stress. Moreover, these organic acids help improve pigs’ appetite and digestive function, enhancing their nutritional status and disease resistance.
5 Supplement vitamins C Vitamin And E Selenium methionine
Add vitamins to the diet. C It can enhance the body’s immune function and effectively relieve heat stress.
Vitamin And E It also plays a certain role in combating heat stress, stimulating immune organs, enhancing the body's immunity, and thereby helping to improve stress resistance.
Selenium possesses strong antioxidant capabilities, enabling it to scavenge oxygen free radicals in the body and reduce damage caused by various stresses. At the same time, it has a positive effect on the reproductive performance of sows.
6 Use of anti-stress drug additives
Add stress-resistant products and immune boosters to the diet to further enhance pigs’ heat tolerance and strengthen their disease resistance and immune function. You can add Viswan per ton of feed. 1kg Add twice a month, each time. 7-10 Adding it especially during epidemic prevention, group transfers, feed changes, and disease outbreaks can reduce the negative impacts of various stresses, accelerate recovery from illness, and shorten the duration of treatment.
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