Author:
Lebedev S V,Zavyalov O A,Frolov A N
Abstract
Abstract
The research was carried out in the conditions of LLC “Poultry farm Orenburgskaya”, the Orenburg region, Russia. For the experiment, 120 hens of the Hisex-Brown cross were selected, of which, according to the principle of analog pairs, 4 groups were formed (n=30): one control and three experimental. According to the experimental method, the poultry was under conditions of the preparatory period up to 13 weeks of age. In the period from 14 to 16 weeks of age, the poultry from the experimental group I took, in addition to the main diet, cadmium sulfate salt (CdSO4) at a dosage of 40 mg / kg of feed, the poultry from the experimental group II took cadmium sulfate at the same dosage and a complex of essential elements: Se in the form of sodium selenite 0.44 mg / kg feed; Zn (zinc sulfate 178 mg / kg feed); the poultry from the experimental group I (potassium iodide - 0.46 mg / kg feed); the poultry from the experimental group III took only a complex of essential elements (Se, Zn, I). It was found that the weight of the gutted poultry carcass and the ratio of the edible and inedible parts of the poultry of the experimental group I, which took cadmium sulfate in the diet, exceeded the analogs from the control group by 5.5 (P≤0.01) and 8.1% (P≤0.05), while the total weight of the digestive tract in poultry of the experimental groups I, II and III were higher than the same indicator established for individuals from the control group by 27.0% (P≤0.05); 44.9% (P≤0.05) and 30.5% (P≤0.05), respectively. By the meat content index, the poultry of the experimental group I exceeded the control one by 9.3% (P≤0.05), while the chickens of the experimental groups II and III, on the contrary, were inferior to the control one by 5.6 (P≤0.05) and 2.5% (P≤0.05), respectively. There were no significant differences in the slaughter yield between the poultry of the experimental and control groups.