Effects of different fermented soy protein and apparent ileal digestible lysine levels on weaning pigs fed fermented soy protein‐amended diets

Abstract

Two experiments were conducted to evaluate the effect of different fermented soybean proteins and the apparent ileal digestible lysine levels on weaning pigs fed fermented soy protein (FSP)-amended diets. In Exp. 1, 70 crossed piglets (6.25 ± 0.40 kg) were used in a 5-week trial to evaluate two different FSP. In Exp. 2, 20 weaning barrows (6.15 ± 0.45 kg) were used in a metabolism trial to determine the effects of the apparent ileal digestible (1.2, 1.3, 1.4 and 1.5%) lysine levels in weaning pigs fed FSP (5%) diet. In Exp. 1, pigs fed the diet containing Lactobacillus spp. FSP showed higher nitrogen (N) digestibility (P<0.05), lower blood urea nitrogen and serum creatinine levels (P<0.05) than those fed the Aspergillus oryzae FSP diet. In Exp. 2, increasing dietary lysine levels increased the average daily gain, apparent dry matter, N digestibility, N retention and essential amino acids in the current study (P<0.05), with the 1.5% showing the highest value. In conclusion, pigs fed Lactobacillus spp. FSP had a higher N digestibility than those fed A. oryzae FSP. The optimal apparent ileal digestibility lysine level in fermented soy protein diets (3550 kcal/kg metabolizable energy) for maximizing growth performance and N utilization in the first 7 days (6.25 kg) was 1.5%.

Effect of Fermented Chlorella Supplementation on Growth Performance, Nutrient Digestibility, Blood Characteristics, Fecal Microbial and Fecal Noxious Gas Content in Growing Pigs

“…Our previous studies also confirmed that fermentation process could improve the quality of the soybean meal, fish meal and garlic powder, and subsequently improve the growth performance of the animal (Cho and Kim., 2011; Yan et al, 2011a; Yan et al, 2012a, b). Therefore, it is suitable to hypothesize that fermentation process could also benefit the chlorella utilization in livestock.…”

Ileal digestibility of nutrients and amino acids in unfermented, fermented soybean meal and canola meal for weaning pigs

“…Yan et al (2011) also indicated that extent of hydrolysis of protein differs according to the species used for fermentation. In the current study, the main objective was to assess the apparent and standardized ileal digestibility of nutrient and amino acids in unfermented soybean, canola meal and fermented SM fermented by yeast or different species of bacillus, or a combination of both yeast and bacillus.…”

Apparent digestibility of soybean meal andLactobacillusspp. fermented soybean meal in diets of grouper,Epinephelus coioides

“…Microorganism can excrete protease during fermentation to partially hydrolyse the protein of soybean meal and then degrade molecular weight (Kim ). Yan, Wang and Kim () found that nitrogen digestibility of Lactobacillus spp. fermented soybean meal was higher than that of Aspergillus oryzae fermented soybean meal in pigs.…”