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http://dx.doi.org/10.5187/JAST.2006.48.1.049

Effects of Mud Flat Bacteria Origin Protease Supplementation on Growth Performance, Amino Acid Digestibility, Blood Characteristics, Meat Quality, Fecal VFA and NH3-N Concentration in Finishing Pigs  

김해진 (Department of Animal Resource & Science, Dankook University)
민병준 (Department of Animal Resource & Science, Dankook University)
조진호 (Department of Animal Resource & Science, Dankook University)
진영걸 (Department of Animal Resource & Science, Dankook University)
유종상 (Department of Animal Resource & Science, Dankook University)
김인호 (Department of Animal Resource & Science, Dankook University)
장정순 (Department of Medicine, Inha University)
이운교 (Kofavet, Inc)
Publication Information
Journal of Animal Science and Technology / v.48, no.1, 2006 , pp. 49-58 More about this Journal
Abstract
This study was conducted to evaluate effects of mud flat bacteria origin protease supplementation on growth performance, amino acid digestibility, blood characteristics, meat quality, fecal VFA (volatile fatty acids) and NH3-N (ammonia nitrogen) concentration in finishing pigs. Eighty pigs (Landrace×Yorkshire×Duroc, 60.08±2.69 kg average initial body weight) were used during experimental period. Dietary treatments included 1) high nutrient density diet, 2) high nutrient density diet+0.1% protease, 3) low nutrient density diet and 4) low nutrient density diet+0.1% protease. For overall period, ADG was improved in treatment of high nutrient density diet added protease compared with treatment of low nutrient density diet without protease (P<0.05). DM and N digestibilities were improved in treatments of high nutrient density diet and low nutrient density diet added protease compared with treatment of low nutrient density diet without protease (P<0.05). Essential amino acid digestibility was improved in treatment of low nutrient density diet added protease compared with other treatments (P<0.05). Nonessential amino acid digestibility was improved in treatment of high nutrient density diet added protease compared with treatments of high and low nutrient density diet (P<0.05). BUN (blood urea nitrogen)　concentration in blood was increased in treatment of high nutrient density diet added protease compared with treatment of low nutrient density diet without protease (P<0.05). L*value of M. longissimus dorsi muscle was increased in treatments of low nutrient density diet compared with treatments of high nutrient density diet (P<0.05). In conclusion, mud flat bacteria origin protease was effective for improving growth performance, amino acid digestibility and influencing BUN concentration and meat color in finishing pigs.
Keywords
Growth performance; Amino acid digestibility; Blood characteristics; Meat quality; VFA; NH3-N;
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