Feed nutrient supply for summer broilers
The high temperature and high humidity in the summer can easily lead to a reduction in the ability of the chicken to feed on the food and reduce the feed intake. By adjusting the feeding method and formula of the diet, the production performance of the broiler can be maintained. The general principle is as follows
First, feeding time
Avoiding high temperature periods, it is generally preferred to feed once in the morning or from 11 to 12 in the evening. Summer feed is easy to mold, do not feed mildew feed.
Second, diet formulation adjustment
By adjusting the proportion of dietary nutrients, chickens can be strengthened against stress.
1. The broiler prefers pellet feed. Feeding fresh pellet feed can increase the appetite of the chicken.
2. Increase oil content
The use of fats and oils that have the lowest heat-reducing nutrients, proper adjustment of the ratio of essential fatty acids and carbohydrates in the feed, increased energy concentration of the feed, and improved adaptability during heat stress of broilers can significantly improve the production performance of heat-stressed poultry . However, care should be taken to prevent fat oxidation during high temperatures. Add ethoxylated antioxidants to prevent fat oxidation.
3 increase protein, amino acid raw materials
Using plant protein sources during heat stress works better than animal protein sources. It can increase the proportion of soybean meal in the diet by 2% ^3% or the proportion of fishmeal by 1% to 2%.
4. Add amino acids appropriately
Especially methionine and lysine. These two amino acids reduce the broiler's sensitivity to heat stress. Corn-soybean diets require the addition of methionine to obtain better broiler performance.
5. Ion balance
Heat stress must pay attention to the ion balance of the diet. During stress, the discharge of potassium, sodium, zinc, and molybdenum increased with urine, the excretion of calcium, manganese, selenium, and copper in the feces also increased, and the storage of magnesium and phosphorus also decreased. So pay attention to the content of these kinds of ions.
6. Increased vitamin requirements of chickens during heat stress
Vitamin C, vitamin E. Vitamin C supplemented with vitamin C can significantly inhibit body temperature rise, increase feed intake and reduce the adverse effects of heat stress on metabolism.
7. Supplemental trace elements
Heat-stressed layer diets should be supplemented with some relatively deficient elements, suitable for the addition of: selenium 0.33 mg/kg, copper 33.3 mg/kg, zinc 100 mg/kg.
8 Add electrolyte material
Adding sodium bicarbonate to diets Using sodium bicarbonate (sodium bicarbonate) as a substitute for some of the salt in the diet is beneficial to the distribution of heat in the chicken body and promote weight gain.
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