Juan CHANG, Qingqiang YIN, Pengpeng WANG, Weimin WANG, Ruiyu ZUO

Effect of fermented protein feedstuffs on pig production performance, nutrient digestibility, and fecal microbes

In order to determine the availability of fermented protein feedstuffs (FPFS)-such as cottonseed, blood, and feather meals—with Aspergillus oryzae, 2 phases of feeding experiments were adopted for 7 weeks. Sixty 58-day-old crossbred pigs were assigned to 6 groups, 10 pigs per group. Group 1 was the control; groups 2, 3, and 4 were supplemented with 6%-7%, 12%-14%, and 18%-21% FPFS, respectively, by replacing the same percentage of soybean meal (SBM); group 5 was supplemented with 12%-14% unfermented protein feedstuffs (UFPFS) by replacing the same percentage of SBM; group 6 was on the same base as group 3 with digestive energy (DE) balanced as in group 1. The results showed: (1) The soluble amino acids in FPFS were increased by 211% (58.06 vs. 18.68 g/kg), compared with UFPFS; (2) the average daily gain (ADG) increased (P < 0.05) in group 2, compared with the other groups; ADG in group 3 was higher than that in group 5 (P < 0.05); and (3) nutrient digestibility in the groups supplemented with FPFS was higher than in the group supplemented with UFPFS (P < 0.05). The results suggest that a 6%-7% FPFS supplementation to replace SBM in pig diets would be ideal and economic.

Effect of fermented protein feedstuffs on pig production performance, nutrient digestibility, and fecal microbes

Keywords:

Key words: Pig, Aspergillus oryzae, protein feedstuffs, fermentation, production performance,

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