Effect of biogas residue feed on swine carcass and meat quality and nutrition content

Duroc-landrace-yorkshire swine was used to analyze the effect of biogas residue feed on carcass and meat quality and nutrition content. The results show insignificant effect of biogas residue feed at different doses on dressed weight rate and carcass length. However, biogas residue feed significantly decreases lean meat rate, ham rate, and lion-eye area, while significantly increasing backfat thickness. Biogas residue diet decreases meat color, meat cooking rate, while significantly increases drip loss rate and shear force value, the effects are enhanced by increasing dosage of biogas feed. The effect of biogas residue diet on muscle dehydrating rate, pH is insignificant, while on marbling score is significant. The study on swine nutrition shows that biogas feed reduces crude protein, fat and water content, but has little effect on crude ash content. Adding biogas residue to swine diet decreases carcass and meat quality, and nutrition content, a key issue to be considered before using biogas residue as an ingredient of swine diet.