An evaluation of the effects of dietary mixed-species direct-fed microbial (probiotic) on growth performance, gas emissions, meat quality, nutrient digestibility, and fecal score in finishing pigs
IF 1.2 4区 农林科学Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
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引用次数: 0
Abstract
This study examined the effects of mixed-species direct-fed microbial (DFM) on growth performance, gas emissions, meat quality, nutrient digestibility, and the fecal score of finishing pigs. A total of 100 crossbred finishing pigs ((Yorkshire × Landrace) × Duroc) weighing 58.97 ± 3.12 kg were randomly assigned to one of two diets (5 pigs per pen (2 barrows and 3 gilts); 50 pigs per treatment) in an 8-week trial. Dietary treatments comprised of the basal diet without probiotics control or basal diet + (0.1%) mixed probiotics (DFM). Mixed DFM supplementation showed a tendency to increase ( P = 0.093) the body weight of finishing pigs during day 56. Comparing mixed DFM with the control diet, mixed probiotics significantly improved average daily gain (ADG) during weeks 5–8 ( P = 0.024) and overall ( P = 0.013). DFM-supplemented diets reduced the emission of CH 4 and NH 3 significantly at weeks 4 and 8 compared with control. DFM supplementation did not affect H 2 S, methyl mercaptans, acetic acid, or CO 2 emissions. Mixed DFM supplementation showed a tendency to increase ( P = 0.07) nitrogen digestibility. Pigs receiving mixed DFM had improved ADG and reduced NH 3 and CH 4 emissions without affecting meat quality, nutrient digestibility, intestinal microbes, and fecal score.
期刊介绍:
Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.