Abstract
ObjectiveThis study investigated the effect of fermented biogas residue (FBR) of wheat on the performance, serum biochemical parameters, and meat quality in pigs.MethodsWe selected 128 pigs (the mean initial body weight was 40.24±3.08 kg) and randomly allocated them to 4 groups (1 control group and 3 treatment groups) with 4 replicates per group and 8 pigs per pen in a randomized complete block design based on initial body weight and sex. The control group received a corn-soybean meal-based diet, the treatment group fed diets containing 5%, 10%, and 15% FBR, respectively (abbreviated as FBR5, FBR10, and FBR15, respectively). Every group received equivalent-energy and nitrogen diets. The test lasted 60 days and was divided into early and late stages. Blood and carcass samples were obtained on 60 d. Meat quality was collected from two pigs per pen.ResultsDuring the late stage, the average daily feed intake and average daily gain of the treatment groups was greater than that of the control group (p<0.05). During the entire experiment, the average daily gain of the treatment groups was higher than that of the control group (p<0.05). Fermented biomass residue did not significantly affect serum biochemical parameters or meat quality, but did affect amino acid profiles in pork. The contents of Asp, Arg, Tyr, Phe, Leu, Thr, Ser, Lys, Pro, Ala, essential amino acids, non-essential amino acids, and total amino acids in pork of FBR5 and FBR10 were greater than those of the control group (p<0.05).ConclusionThese combined results suggest that feeding FBR could increase the average daily gain and average daily feed intake in pigs and the content of several flavor-promoting amino acids.
Highlights
Wheat was crushed, washed, fermented, and distilled to produce alcohol
The protein feed resources are seriously insufficient in China, a large number of soybean meal should be imported every year to meet the needs of pig husbandry
There were no significant differences between the growth performances of the treatment groups and control groups during the early test stage
Summary
Wheat was crushed, washed, fermented, and distilled to produce alcohol. This process yields alcohol waste liquid which is able to be centrifuged to separate the filtrate. The filtrate can be used to produce biogas, and the remaining biogas residue contains 35% crude protein on a dry matter basis [1]. These biogas residues can be used as a feed ingredient for pigs and chickens [2,3]. Untreated biogas residues contain up to 80% moisture and bad peculiar smell that animals did not like which renders them unsuitable for feed ingredients. If they are mixed with other raw feed materials, solid aerobic fermented. Some of the water is evaporated and www.ajas.info
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