hysicochemical requirements of plasma protein powder of spray-dried duck for feed

Piglet weaning is a very important link in the process of pig production. The traditional weaning time of piglets in China is about 8 weeks old, but under the condition of modern breeding and production, in order to improve the annual litter size of sows, the number of weaned piglets and feed utilization efficiency, piglets are generally weaned at the age of 3 to 5 weeks. The use of early weaning technology of piglets can increase the reproduction rate of sows, reduce the spread of diseases from sows to piglets, and improve production performance and carcass physique during the growing period. However, most piglets after early weaning have diarrhea and corresponding stress syndrome, which will lead to severe growth obstruction or even death in the later stage if not treated in time. During weaning, immature digestive tract, insufficient secretion of digestive enzymes, low digestibility of feed, low utilization efficiency of protein in feed and weaning stress caused morphological changes of intestinal epithelial cells of piglets, which destroyed the intestinal barrier of piglets and impaired intestinal immune function of piglets. As a result, the immune resistance of weaned piglets is low, the growth is hindered, and the growth performance of weaned piglets is affected. Therefore, starting from these aspects may be beneficial to the relief of weaning stress syndrome. As an excellent animal-derived protein feed, chicken plasma protSpray-dried plasma protein powder (Spray-Dried Porcine Plasma,SDPP) is a kind of feed material containing highly digestible proteins, amino acids and high concentrations of functional bioactive components (such as immunoglobulin, transferrin, growth factors, peptides) and other bioactive components. A large number of peer-reviewed papers mentioned that compared with other high-quality protein feed materials, weaned piglets were fed a diet containing spray-dried plasma protein powder, its growth rate, feed intake, feed conversion efficiency and survival rate and other production performance can be more beneficial improved. In 2008, at the American Society for Animal S0cience (American Society of)ein powder has been favored since it entered the feed market.