1, fat addition and feeding effect
Add 2% to 3% to the piglet feed, increase the weight gain by 10% to 14%, and reduce the unit weight gain by 8% to 10%. Adding sugar and fat to the feed of piglets can improve palatability and benefit piglets as soon as possible. Adding 3% to 5% in the growth and finishing pig feed can increase the weight gain by 5% and reduce the consumption by 10%. Pregnancy sows are added 2% to 6%, which can be added from 2 weeks after pregnancy. The live weight of newborn piglets can be increased by 10% to 12%. The number of piglets in lactation increases by 1.5 to 2 per sow per year. If the dosage is increased to 10% within 5 to 15 days before delivery, the effect is more significant. The amount of lactating sows added is 5% to 10%, the milk production of sows is increased by 10% to 30%, and the weaning weight of piglets is increased by 15%. On the basis of adding the monthly fat during pregnancy, the continued addition of lactation can shorten the interval between weaning and estrus, and increase the number of litters in the litter.
2, add method
The added lard, butter, soy oil feet, etc. can be added to the feed by adding a certain amount of chopped green onion and flavoring agent according to the amount of the mixture. This method is applicable to pig farmers with low feeding capacity. Dip the grease into a viscous shape, add a certain proportion of glutinous feed or cornmeal, stir evenly (put in a certain amount of antioxidants), spread it on the concrete floor in summer, dry it, dry it in winter, or use oil The machine is pressed into cakes, and the cakes are crushed and added to the feed according to the proportion of the feed formula.
3, matters needing attention
Fat must be a non-specific odor, and no good quality fat can be used to ensure feed quality and palatability. Adding fat must add vitamin B12 and yeast feed in an appropriate amount to facilitate the absorption and utilization of fat and prevent the occurrence of fatty liver disease. In addition, vitamin C is added to the feed, and 200-300 mg/kg of feed can promote growth and increase feed conversion ratio. When directly modulating feeding, be sure to adjust the current feeding to prevent rancidity. The storage time of dry feed added with fat should not be too long, usually 5 to 7 days. The shorter the summer time, the better. When adding, it is necessary to start from a small amount to an appropriate amount to prevent diarrhea caused by a large amount. Adding fat must give more water, which is good for the absorption and utilization of fat. It is best to use vegetable oils for fats, because the digestion and absorption of vegetable oils is better than animal oils. The lard in animal oils is better than butter. It is best to mix vegetable oils and animal oils in a ratio of 3:1 for better results. For lean meat-type finishing pigs, fat can be added in the early stage of fattening, while fat should not be added in the late fattening period to increase the lean meat rate.
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