(A) The use of fats and oils due to the viscosity of the oil, if it is difficult to mix the use of artificial addition, it is necessary to first heat the melted oil (higher temperature requirements in winter), and gradually expand the dilution with the powder, stir, Mixing with the remaining rations at the end of the day should avoid mixing the oil directly with the feed. Sprayers can also be used to evenly spray the oil on the surface of the pellet feed, thereby improving the palatability of the broilers.
(b) Oils and fats and suitable amounts of oils and fats include animal oils and vegetable oils such as lard oil, fish oil, etc., whose metabolic energy is above 33.5 MJ/kg, and vegetable oils such as rapeseed oil, cottonseed oil, and corn oil. About 29.3 MJ/kg. In general, the optimum amount of fat in broiler diets is 0.5% in the early stage and 5%-6% in the middle and late stages, so that the metabolic energy in the diet can reach 13.4-14.2 MJ/kg, which can keep the broilers growing faster. Rate and best economic efficiency.
(3) Problems to be noticed when using oils and fats The use of oils and fats in broiler chicken feed should also be noted as follows.
1. Pay attention to the nutritional balance of the diet. After the oil is added, the energy level of the diet is increased, and other nutrients in the feed have to be adjusted accordingly, especially to keep the energy ratio of the feed protein unchanged.
2. Do not store for too long. Oils contain more unsaturated fatty acids, storage time is too long or stored under high temperature conditions easily oxidized rancidity, therefore, the shorter the storage time the better, the summer is generally not more than 7 days, winter is not more than 3 weeks is appropriate. Deteriorated and odoriferous oils cannot be used.
3. Add antioxidants. Due to the easy oxidation of oiled foods, the addition of antioxidants is indispensable.
4. Can not feed poultry oil. Broilers cannot feed poultry oil to prevent infection of various infectious diseases.
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