In vitro degradation of wheat straw by anaerobic fungi from small ruminants

被引:62
作者
Thareja, Ankur
Puniya, Anil K. [1 ]
Goel, Gunjan
Nagpal, Ravinder
Sehgal, Jatinder P.
Singh, Pawan K.
Singh, Kishan
机构
[1] Natl Dairy Res Inst, Dairy Microbiol Div, Karnal 132001, Haryana, India
[2] Natl Dairy Res Inst, Dairy Cattle Nutr Div, Karnal 132001, Haryana, India
[3] Doon PG Paramed Coll, Dehra Dun, Uttar Pradesh, India
关键词
anaerobic fungi; small ruminants; degradation; wheat straw;
D O I
10.1080/17450390600884443
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 [畜牧学];
摘要
Anaerobic ruminal fungi may play an active role in fibre degradation as evidenced by the production of different fibrolytic enzymes in culture filtrate. In the present study, 16 anaerobic fungal strains were isolated from ruminal and faecal samples of sheep and goats. Based on their morphological characteristics they were identified as species of Anaeromyces, Orpinomyces, Piromyces and Neocallimastix. Isolated Neocallimastix sp. from goat rumen showed a maximum activity of CMCase (47.9 mIU ml(-1)) and filter paper cellulase (48.3 mIU ml(-1)), while Anaeromyces sp. from sheep rumen showed a maximum xylanolytic activity (48.3 mIU ml(-1)). The cellobiase activity for all the isolates ranged from 178.0-182.7 mIU ml(-1). Based on the enzymatic activities, isolated Anaeromyces sp. from sheep rumen and Neocallimastix sp. from goat rumen were selected for their potential of in vitro fibre degradation. The highest in vitro digestibility of NDF (23.2%) and DM (34.4%) was shown for Neocallimastix sp. from goat rumen, as compared to the digestibility of NDF and DM in the control group of 17.5 and 25.0%, respectively.
引用
收藏
页码:412 / 417
页数:6
相关论文
共 31 条
[1]
A. O. A. C, 1993, OFF METH AN
[2]
[3]
FERULOYL AND PARA-COUMAROYL ESTERASE FROM ANAEROBIC FUNGI IN RELATION TO PLANT-CELL WALL DEGRADATION [J].
BORNEMAN, WS ;
HARTLEY, RD ;
MORRISON, WH ;
AKIN, DE ;
LJUNGDAHL, LG .
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 1990, 33 (03) :345-351
[4]
PURIFICATION AND PARTIAL CHARACTERIZATION OF 2 FERULOYL ESTERASES FROM THE ANAEROBIC FUNGUS NEOCALLIMASTIX STRAIN MC-2 [J].
BORNEMAN, WS ;
LJUNGDAHL, LG ;
HARTLEY, RD ;
AKIN, DE .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1992, 58 (11) :3762-3766
[5]
ANAEROMYCES-MUCRONATUS NOV-GEN, NOV-SP - A NEW STRICTLY ANAEROBIC RUMEN FUNGUS WITH POLYCENTRIC THALLUS [J].
BRETON, A ;
BERNALIER, A ;
DUSSER, M ;
FONTY, G ;
GAILLARDMARTINIE, B ;
GUILLOT, J .
FEMS MICROBIOLOGY LETTERS, 1990, 70 (02) :177-182
[6]
DISTRIBUTION OF ANAEROBIC FUNGI IN THE DIGESTIVE-TRACT OF CATTLE AND THEIR SURVIVAL IN FECES [J].
DAVIES, DR ;
THEODOROU, MK ;
LAWRENCE, MIG ;
TRINCI, APJ .
JOURNAL OF GENERAL MICROBIOLOGY, 1993, 139 :1395-1400
[7]
DEY A, 2004, ASIAN AUSTRAL J ANIM, V17, P733
[8]
Goering H.K., 1970, FORAGE FIBER ANAL AP, V379
[9]
Ha J K, 1994, P SOC NUTR PHYSL, V3, P197
[10]
HO YW, 1988, J GEN MICROBIOL, V134, P177