The addition of fats and oils in feed has become one of the important measures to improve animal performance. The melting point of 38 °C or more than 40 °C called tallow or fat, such as lard, suet, etc.; melting point below 38 °C called oil. Adding fats and oils to feeds can be easily used by pigs and pigs to save a lot of grain feeds. It can improve feed palatability and increase daily weight gain. In the summer, it can effectively reduce heat stress loss, and in the winter it can increase the ability to keep cold.
Source of fat
Animal fats and oils: The raw materials of animal fats are mostly from the by-products of meat processing plants. For example, the trimmed fat portion, the internal organs, and the inedible carcass part of the meat are also important sources of fats that are trimmed by the tanneries. The effect of the oil residue from food processing plants is also good, and the price of animal fats is decreasing. It can also be purchased.
Vegetable fats: Some vegetable oils and their oily feet can be fed. Commonly used vegetable oils are: peanut oil, soybean oil, sunflower oil, palm oil and so on. Cottonseed oil, rapeseed oil and linseed oil contain a certain amount of toxins. Apply after proper processing. The detoxified cottonseed oil still contains a small amount of gossypol and cannot be used for breeding pigs so as not to damage reproductive performance.
Add proportions and effects
1, piglets: pigs added 5% to 10% of the diet, can significantly increase the growth rate. Adding 5% to 6% fat to the weaned piglet diet can increase the weight gain of weaned piglets by 5% to 10%, and reduce feed consumption per kilogram of weight by 7% to 15%.
2, growing fattening pigs: According to the test: 35 to 60 kilograms of pigs added 1% of the oil can receive dust, reduce waste, improve the absorption of fat-soluble vitamins and other effects. Finishing pigs weighing more than 45 kilograms, adding fat can not exceed 5%, otherwise easily lead to obesity. The addition of plant fat should not exceed 1.5%, otherwise it will cause the carcass to soften.
3, sows: pregnant sows feed should be added 2 to 3 weeks before labor, add the right amount of oil in the diet, do not have to worry about excessive milk caused by piglets diarrhea. But it can effectively promote fetal growth, increase birth weight, and can produce more uniform and more healthy and lively piglets.
Adding oils and fats during the lactation phase can significantly increase the milk fat percentage and the content of oleic acid in milk fat, which can increase the weaning weight by 6%. The most important aspect of high-energy diets is shortening the estrus time after weaning, which significantly improves the overall productivity of sows.
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