Although these additives do not contain the nutrients required by the chicken, they are beneficial to promote the growth and development of the chicken, increase the egg production rate, enhance disease resistance and feed storage. The types include antibiotic additives, insect repellent health supplements, antioxidants, antifungal agents, Chinese herbal medicine additives, hormones, and enzyme preparations.
Antibiotic Additives
Antibiotics have antibacterial action. Some antibiotics can be used as additives to inhibit the activity of harmful bacteria in the intestinal tract of chickens. They have the effect of resisting multiple respiratory and digestive diseases, improving feed utilization, promoting weight gain and laying eggs, especially The effect is more pronounced when the chicken is in adversity. Commonly used antibiotic additives are penicillin, oxytetracycline, chlortetracycline, neomycin, and tylosin.
When using antibiotic additives, it is necessary to pay attention to the alternate action of several antibiotics, so as to avoid the resistance of harmful microorganisms in the intestinal tract of the chicken and reduce the control effect. In order to avoid drug resistance and product residue is too high, should be used at intervals, and strictly control the amount of addition, use less or with caution the antibiotics shared by humans and animals.
health care additive
In the parasitic diseases of chickens, the incidence of coccidiosis is high and the damage is high. Special attention should be paid to prevention. Commonly used anticoccidial drugs are ç—¢ ç—¢ ã€, aminopropanoid, salinomycin, monensin, chlorpheniramine, etc., should also be used interchangeably to avoid drug resistance.
Antioxidant
In the process of feed storage, the addition of antioxidants can reduce the oxidation loss of vitamins, fats and other nutrients, such as adding 200 grams of quinine in each ton of feed, storage for one year, loss of carotene by 30%, without the loss of antioxidants 70 %; Adding antioxidants to fat-rich fishmeal can maintain the digestibility of the original crude protein, and the efficiency of digestion, absorption and utilization of various amino acids is not affected. Commonly used antioxidants are quinine quinone, ethylated hydroxytoluene, butylated hydroxymethoxybenzene, etc., and the usual addition amount is 100 mg to 150 mg per kilogram.
Fungicide
In the process of storing the feed, in order to prevent the mold from being mildewed and degraded, and maintaining good palatability and nutritional value, an anti-fungal agent may be added to the feed. Commonly used antifungal agents are sodium propionate, calcium propionate, sodium dehydroacetate, and gypsum. The amount added is: sodium propionate plus 1 kg per ton of feed; calcium propionate plus 2 kg per ton of feed; sodium dehydroacetate plus 200 g to 500 g per ton of feed.
Egg yolk agent
After adding the egg yolk coloring agent to the feed, the egg yellow color can be improved, that is, the color of the egg yolk is changed from light yellow to dark yellow. Commonly used egg yolk coloring agents are lutein, licaconine, red pepper powder and the like. For example, 200 g to 300 g of red pepper powder is added per 100 kg. Even feeding for half a month, can keep the egg yolk dark yellow for 2 months, while also improving the appetite of the chicken and increasing the egg production rate.
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