The rational use of animal and vegetable fats can promote the growth of livestock and poultry and accelerate the growth rate. The amount of fat to be added should be determined according to livestock and poultry breeds, production performance, external environment, etc., and be reasonably added according to the requirements of the organism. Too little to be added will not achieve the effect of animal fattening; adding too much will affect the palatability of the feed and Digestion and absorption, and affect the level of balance of other nutrient absorption. The amount of fat to be added is from 10% to 15% of prenatal to lactating sows, 5% to 10% of piglets, 3% to 5% of growing pigs, 5% to 8% of broiler chickens, and 3% to 5% of laying hens. 10% to 15% of fish, 400 to 600 grams of fat per day should be added to dairy cow diets.
Smaller livestock and poultry households generally use the total amount of feed according to the proportion of the grease is called good, into the pot boiled into oil soup, then add green onion and other flavoring agents, slightly cooler and mix in the feed. Large-scale livestock and poultry households and feed processing plants use dedicated oil-adding equipment. Can also be fat into a thick paste, add a certain percentage of bran feed, cornmeal and antioxidants, stir evenly dried, can also be pressed into a cake, use the cake after the crush and feed formula added to the feed Feeding.