Asian-Australasian Journal of Animal Sciences

  • 제23권2호
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  • Pages.246-252
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  • 2010
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Effect of the Transformed Lactobacillus with Phytase Gene on Pig Production Performance, Nutrient Digestibility, Gut Microbes and Serum Biochemical Indexes

  • Yin, Q.Q. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Chang, J. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Zuo, R.Y. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Chen, L.Y. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Chen, Q.X. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Wei, X.Y. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Guan, Q.F. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Sun, J.W. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Zheng, Q.H. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Yang, X. (College of Animal Science and Veterinary Medicine, Henan Agricultural University) ;
  • Ren, G.Z. (College of Animal Science and Veterinary Medicine, Henan Agricultural University)
  • 투고 : 2009.07.08
  • 심사 : 2009.09.25
  • 발행 : 2010.02.01
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초록

In order to improve the availability of phytase and probiotics together, a phytase gene from Aspergillus ficuum has been expressed in Lactobacillus. In this study, the transformed Lactobacillus with phytase gene was fed to pigs to determine its effect on pig production, feed conversion and gut microbes. Forty eight, 60-day-old, castrated pigs (Duroc${\times}$Landrace${\times}$Pietrain) were assigned to 6 groups, 8 pigs for each group. Group 1 was the control, group 2 was added with chlortetracycline (500 mg/kg), group 3 was added with the transformed Lactobacillus (500 mg/kg) with 20% (w/w) of calcium monohydrogen phosphate (CMP, $CaHPO_{4}$) removed, group 4 was added with the natural Lactobacillus (500 mg/kg) with 20% (w/w) of CMP removed, group 5 was added with the transformed Lactobacillus (500 mg/kg) with 40% (w/w) of CMP removed, group 6 was added with phytase (500 mg/kg) with 40% (w/w) of CMP removed. The results showed: i) the average daily gain (ADG) was improved in groups 2, 3 and 4 (p<0.05); ii) the diarrhea rates in the groups added with Lactobacillus were lower than in the other groups (p<0.05), in which the transformed Lactobacillus had more effect on reducing digestive disease; iii) the transformed Lactobacillus was most effective in improving the digestibilities of crude protein (CP), calcium (Ca), phosphorus (P), compared with the other groups (p<0.05); iv) Lactobacillus could increase lactic acid bacterium number and ammonia concentrations, and decrease pH values and E. coli number in pig feces (p<0.05); v) the phytase activity in the feces of pigs fed with the transformed Lactobacillus was 133.32 U/g, which was higher than in group 4 (9.58 U/g, p<0.05), and was almost the same as group 6 (135.94 U/g); vi) the transformed Lactobacillus could increase serum concentrations of IgA, triglyceride, and glutamic oxaloacetic transaminase activity (p<0.05), and had no significant effect on other serum indexes (p>0.05).

키워드

참고문헌

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