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Evaluation of Microbially Ensiled Spent Mushroom (Pleurotus osteratus) Substrates (Bed-Type Cultivation) as a Roughage for Ruminants

균상재배 느타리버섯부산물 생균발효사료의 반추동물 조사료원으로서의 가치 평가

  • Kim, Young-Il (Animal Science, School of Life Resource and Environmental Sciences, College of Natural Sciences, Konkuk University) ;
  • Seok, Jun-Sang (Animal Science, School of Life Resource and Environmental Sciences, College of Natural Sciences, Konkuk University) ;
  • Kwak, Wan-Sup (Animal Science, School of Life Resource and Environmental Sciences, College of Natural Sciences, Konkuk University)
  • 김영일 (건국대학교 자연과학대학 생명자원환경과학부 축산학) ;
  • 석준상 (건국대학교 자연과학대학 생명자원환경과학부 축산학) ;
  • 곽완섭 (건국대학교 자연과학대학 생명자원환경과학부 축산학)
  • Received : 2010.02.17
  • Accepted : 2010.04.15
  • Published : 2010.04.30

Abstract

An in situ ruminal disappearance trial and an in vivo sheep metabolism trial were conducted to evaluate the nutritional value of spent mushroom substrate (SMS, originated from Pleurotus osteratus bed-type cultivation). The raw SMS was ensiled (ESMS) for 30 days with 5% (w/w, DM basis) molasses, 0.5% (v/w) yeast (Saccharomyces cerevisiae) and 0.5% (v/w) lactic acid bacteria (Lactobacillus plantarum). Two ruminally cannulated Holsteins (average BW 620 kg) were used to evaluate in situ disappearance. Six sheeps (average BW 48 kg) were fed, in $3{\times}3$ Latin square design, rice straw alone (Control), 25% (ESMS-25) and 50% (ESMS-50) of rice straw were replaced with ensiled SMS. For an in situ trial, ruminal DM and neutral detergent fiber (NDF) disappearance of SMS were increased after ensiling (P<0.05). For a sheep trial, protein and fiber (NDF, acid detergent fiber, crude fiber) digestibilities were decreased (P<0.05), crude ash digestibility was increased (P<0.001), and nitrogen retention was not affected (P>0.05) as rice straw was replaced with ensiled SMS. Ruminating time was decreased by an average of 28% by feeding ensiled SMS (P<0.05). Ensiled SMS (Bed-type cultivation) had 76% of energy value of rice straw. Consequently, ensiled SMS (Bed-type cultivation, 100% cotton waste) could be used as a roughage source appropriate for maintenance type rations for ruminants.

Keywords

Spent mushroom substrate;Spent mushroom compost;By-products;Ensiling;Roughage;Ruminant

Acknowledgement

Supported by : 건국대학교

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