Vitamin B can increase the lean rate of pigs

Recent trials in the United States have shown that increasing the amount of vitamin B added to diets of weaned pigs and growing-finishing pigs results in higher lean growth rates. The data show that in order to obtain the best protein deposition, pigs of this genotype must add 3 times the normal standard amount of vitamin B. The high dose of vitamin B is mainly added to compensate for the growth loss caused by the pig under stimulation. ? afU China Feed Industry Information Network - based on feed, serving animal husbandry

The current vitamin supplements are mainly based on experimental studies 20 to 40 years ago, but compared to 20 years ago due to lean meat type, the emergence of fast-growing pigs, and the adoption of new technologies, such as early isolation Weaning technology (SEW) allows up to 80% of the capacity for protein deposition, and those with low immune status can deposit 200 g of protein per day, twice the amount of traditional feeders. If it is assumed that vitamin deposition is required per unit of protein deposition, the high-lean rate of pigs may require 4 to 8 times more vitamin B than the current NRC standard. In 1996, American scholars Stahly and Cook studied the immune status. The effect of vitamin B is required. By feeding the animals with medium and high levels of antigen stimulation, 10 to 28 kg of pigs are taken for free feeding. Nicotinic acid, pantothenic acid and riboflavin are added to each diet. B12 and folic acid, the bioavailability of vitamins provided by the diet is equivalent to 70%, 170%, 270%, 370 and 470% of the required use of NRC (1998) in the 5-10 kg phase. Whether in the medium-level antigen-stimulated state or in the high-level antigen-stimulated state, vitamin B supplementation exceeding the NRC standard can increase body weight gain by 21% and 19%, respectively, while the feed required per unit weight gain is According to these data, in the stage of 10 to 28 kg, the amount of vitamin B added is 370% of the NRC standard, which can have the best growth efficiency and feed conversion ratio. afU China Feed Industry Information Network - based on feed, serving animal husbandry

The US feed industry is tended to use three times the amount of NRC standard vitamin B. The authors' test results show that the addition of 16 times NRC standard vitamins will give the best growth performance, carcass quality and economic benefits. afU China Feed Industry Information Network - based on feed, serving animal husbandry