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Effects of Aspergillus niger-Derived Multi-Enzyme Complex on Performance, Milk Yield, Blood Metabolites, and Manure Output in Multiparous Lactating Sows

사료내 Aspergillus niger 유래 복합효소의 첨가가 포유모돈의 생산성, 유생산, 혈액성상 및 분배설량에 미치는 영향

  • Lee, Sung-Hoon (Livestock Experiment Station, Gyeongsangnamdo Livestock Promotion Research Institute) ;
  • Ha, Young-Joo (Livestock Experiment Station, Gyeongsangnamdo Livestock Promotion Research Institute) ;
  • Kwack, Suk-Chun (Livestock Experiment Station, Gyeongsangnamdo Livestock Promotion Research Institute)
  • 이성훈 (경상남도 축산진흥연구소 축산시험장) ;
  • 하영주 (경상남도 축산진흥연구소 축산시험장) ;
  • 곽석준 (경상남도 축산진흥연구소 축산시험장)
  • Received : 2010.04.14
  • Accepted : 2010.08.04
  • Published : 2010.08.31

Abstract

This study was conducted to investigate the effects of Aspergillus niger-derived multi-enzyme complex supplementation to feedrestricted lactating sows on performances, milk yield, blood profiles, and manure excretion as compared with ad libitum-fed sows without supplementation of enzyme. Fifty multiparous lactating Berkshire sows were allotted to 5 treatments of 10 sows per treatment during a 28-d lactation period and litter per sow was standardized to 9 suckling piglets. Treatments were ad libitum-fed sows without enzyme and feed-restricted sows supplemented with four increasing levels (0, 0.02, 0.04 and 0.08%) of multi-enzyme complex derived from Aspergillus niger. Blood samples from all sows were collected to determine serum metabolite concentrations before the morning feeding on d 27 of lactation. Litter body weight and a piglet weight at weaning, and litter weight gain significantly (P<0.05) increased with increasing levels of multi-enzyme complex, but there was no significant difference between ad libitum-fed sows without enzyme and feed-restricted sows supplemented with multi-enzyme complex. Body condition score and backfat depth at weaning significantly (P<0.05) increased as multi-enzyme complex level increased. Lactational backfat depth tended (P>0.05) to less decrease with increasing levels of enzyme complex. Serum inorganic phosphorus and non-esterified fatty acid concentrations significantly (P<0.05) increased with increasing levels of enzyme complex. Daily milk yield was not significantly different across treatments, but milk fat yield significantly (P<0.05) increased as multi-enzyme complex level increased. Manure output was significantly (P<0.01) higher for ad libitum-fed sows than for feed-restricted sows, but there was no significant difference among feed-restricted sows supplemented with increasing levels of multi-enzyme complex. Fecal phosphorus amount significantly (P<0.05) decreased with increasing levels of multi-enzyme complex. Feed costs of sows per litter weight gain were reduced by 1.25% to 9.67% with increasing levels of multi-enzyme complex as compared with ad libitum-fed sows without enzyme. The results indicated that multi-enzyme supplementation to feed-restricted lactating sows not only increased litter performances, but also was comparable to ad libitum-fed sows, resulting in reduced feed costs. Moreover, the reduction of fecal phosphorus amount with increasing levels of enzyme complex would contribute to the reduction of environmental pollution.

Keywords

Lactating sows;Multi-enzyme complex;Litter weight gain;Milk fat yield;Fecal phosphorus

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