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Effect of Heterofermentative Lactic Acid Bacteria on the Quality of Italian Ryegrass and Whole-crop Barley Silage

Hetero 발효 유산균주 첨가가 사일리지용 이탈리안 라이그라스와 총체보리의 품질에 미치는 효과

  • Received : 2014.10.21
  • Accepted : 2014.12.09
  • Published : 2014.12.31

Abstract

This study was conducted to determine the quality of italian ryegrass (IRG) and whole- crop barley (WCB) silage combined with heterofermentative lactic acid bacteria (LAB) during fermentation. Six strains of LAB (L. plantarum IMAU 70164, L. acidophilus KACC 12419, L. casei KACC 12413, L. reuteri KCTC 3594, L. buchneri KACC 12416 and L. diolivorans KACC 12385) were used in this study. L. casei and L. reuteri had the highest propionic acid production and were therefore used for fermenting the forages. The forages were fermented using monoculture and co-culture of L. casei and L. reuteri for 30, 45 and 60 days of ensiling. Addition of LAB lowered the pH of the IRG silage (p<0.05). Moisture content, lactic acid and acetic acid contents were higher (p<0.05) after addition of LAB. Water soluble carbohydrate was significantly lower (p<0.05) in WCB with a co-culture containing L. casei and L. reuteri. Propionic acid production was comparatively higher after addition of LAB to WCB on days 30, 45 and 60 while butyric acid was only detected in the IRG control on day 60. Fungi was not detected within 60 days after addition of LAB in IRG and WCB. Through this experiment, improved forage preservation was achieved using a co-culture containing L. casei and L. reuteri. WCB silage had higher propionic acid concentration and thus, it was a better forage for ensiling using co-culture of L. casei and L. reuteri.

Acknowledgement

Grant : 주류가공 부산물 특성규명 및 사료가치 증진을 통한 한우섬유질 배합사료 제조기술개발

Supported by : 농촌진흥청

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Cited by

  1. Effects of Selected Inoculants on Chemical Compositions and Fermentation Indices of Rye Silage Harvested at Dough Stage vol.38, pp.2, 2018, https://doi.org/10.5333/KGFS.2018.38.2.99