1.College of Animal Science, Southwest University, Chongqing 402460, China; 2.College of Animal Science and Technology, Chongqing Three Gorges Vocational College, Chongqing 404155, China
Abstract：The purpose of this experiment was to study the effects of different dietary fiber sources on the quality and nutritional composition of thigh muscle from Sichuan white geese. A total of 120 one-day-old healthy geese were divided into four groups with three replicates of 10 animals each, which received dietary supplementation of alfalfa, ryegrass, oat grass and peanut seedlings for 70 days, respectively. The results showed that the muscle pH24 h of the peanut seedling group increased significantly compared with the other groups (P < 0.01). The muscle chroma value (C) of the ryegrass group was significantly higher than that of the remaining groups (P < 0.01), while the hue value (H) was significantly lower (P < 0.01). There existed no significant difference in shear stress value between all groups except the peanut seedling group (P > 0.05). The cooking loss rate and drip loss rate of the peanut seedling group were significantly higher than those of any other groups (P < 0.01). The water content of the ryegrass group was significantly higher than that of the peanut seedling and alfalfa groups (P < 0.05). The crude protein content in the peanut seedling group was significantly lower than that in any other groups (P < 0.01). The crude fat content in the ryegrass and alfalfa groups was significantly higher compared with the other two groups (P < 0.01). Amino acid composition demonstrated that the valine content of the alfalfa group was significantly higher than that of the ryegrass group (P < 0.01); the phenylalanine content in the peanut seedling group was the lowest and the total amino acid in the alfalfa group was the highest. The essential amino acid scores (except valine) of each group were greater than 1, and the chemical scores for all amino acids except lysine were also less than 1. Essential amino acid index (EAAI) was the largest in the alfalfa group and smallest in the peanut seedling group. The above findings showed that feeding alfalfa fiber could improve the muscle quality and nutrients of Sichuan white geese.
2019, Vol. 33 
