As a substitute for skimmed milk powder and plasma protein powder.
Skimmed milk powder and plasma protein powder have the advantages of high digestibility and balanced amino acid composition. They are traditionally used as high-quality protein materials for suckling pig starter and early weaning pig feed, but they are expensive.
After catastrophic events such as dioxin pollution and mad cow disease occurred, some areas even banned the use of animal protein in feed. Therefore, finding alternatives to the above-mentioned protein raw materials has always been a major issue in the industry.
After research, it was found that for piglets between 14 days and 35 days of age, using soy protein concentrate to replace 14% of the same protein milk powder, achieved the same food intake and growth rate. The researchers used soy protein concentrate to replace the skimmed milk powder in the early weaned piglets’ diet, and found that the feed conversion rate of the soy protein concentrate was slightly worse, but there was no difference in growth performance.
European trials have shown that the use of soy protein concentrate in combination with high-quality carbohydrate feed such as whey powder to feed early weaned piglets of different ages has achieved similar growth performance to skimmed milk powder.
As a substitute for fish meal.
Fish meal is a protein raw material commonly used in feed for piglets. However, due to the rapid development of the breeding industry, the supply of fish meal will fall short of demand. In addition, the price of high-quality fishmeal is high, and local-produced fishmeal usually has unstable nutrient content.
The non-amino acid nitrogen in fish meal is about 22%, which is higher than 10% of soy protein concentrate, resulting in low digestion and absorption rate of protein in fish meal by piglets. Fish meal may contain pollution sources, such as biogenic amines and pathogenic bacteria, which can cause poor immune function and diarrhea in piglets. Moreover, fishmeal may be a source of pollution of “dioxin”.
Freshness is an important indicator of fish meal quality, so fish meal should not be stored for a long time. The use of soy protein concentrate avoids the above-mentioned disadvantages.