The Comparison of in vitro Digestibility of Wheat Straw by Rumen Anaerobic Fungi of Khuzestan Buffalo and Holstein Cattle
محورهای موضوعی : Camelف. شاکرمی 1 , م. چاجی 2 , م. اسلامی 3 , ط. محمد آبادی 4 , م. بوجارپور 5
1 - Department of Animal Science, Ramin Agricultural and Natural Resources University, Mollasani, Ahvaz, Iran
2 - Department of Animal Science, Ramin Agricultural and Natural Resources University, Mollasani, Ahvaz, Iran
3 - Department of Animal Science, Ramin Agricultural and Natural Resources University, Mollasani, Ahvaz, Iran
4 - Department of Animal Science, Ramin Agricultural and Natural Resources University, Mollasani, Ahvaz, Iran
5 - Department of Animal Science, Ramin Agricultural and Natural Resources University, Mollasani, Ahvaz, Iran
کلید واژه: gas production, rumen fungi enumeration, rumen microorganism, specific rumen anaerobic fungi culture,
چکیده مقاله :
This study was conducted to compare digestibility of wheat straw (WS) by fungi and whole rumen microorganisms (WRM). Dry matter (DM), neutral and acid detergent fiber (NDF and ADF) digestibility of WS were compared with in vitro digestion (IVD), gas production (GP) and specific rumen anaerobic fungi culture (SRAFC). Dry matter, NDF and ADF digestibility of WS by WRM of buffalo (60.80, 49.93 and 17.45%, respectively) were more than cattle (53.00, 38.63 and 10.62%, respectively) (P<0.05). Regardless the type of microorganisms, digestibility of DM (P>0.05), NDF and ADF by buffalo (51.03, 44.41 and 12.09%) was more than cattle (48.04, 36.34 and 8.76) (P<0.05). Potential of GP (B) by fungi and WRM in cattle was more than buffalo (P<0.05). Rate of GP (C) for WRM and fungi of cattle was less than buffalo (P<0.05). Regardless the type of microorganisms, C in buffalo was more than cattle (P<0.05) and was vice versa for B (P<0.05). Regardless the type of animal species, WRM had higher digestibility and B than fungi (P>0.05), but rate of GP of them was same. In SRAFC, DM digestibility of WS by fungi of buffalo at days 3 and 12 was more than cattle (P<0.05). The number of fungi in cattle rumen was more than buffalo (P<0.05). The potential of fungi and WRM of buffalo were more than cattle. Therefore, the results were shown the advantage and supremacy of buffalo in usage the low quality roughages.
این مطالعه به منظور مقایسه قابلیت هضم کاه گندم توسط قارچ‌ها و کل میکروارگانیسمهای شکمبه (WRM) گاو و گاومیش انجام شد. قابلیت هضم ماده خشک (DMD)، الیاف نامحلول در شوینده خنثی (DNDF) و اسیدی (ADFD) توسط WRM و قارچ‌های شکمبه گاو و گاومیش به روش هضم آزمایشگاهی، تولید گاز و کشت اختصاصی قارچ‌های شکمبه (SRAFC) مقایسه شد. DMD، NDFDو ADFD کاه توسط WRM گاومیش (به ترتیب 80/60، 93/49 و 45/17 درصد) بیشتر از گاو (به ترتیب 00/53، 63/38 و 62/10 درصد) بود (05/0P<). صرف نظر از نوع میکروارگانیسم‌ها DMD (05/0P>)، NDF و ADF توسط گاومیش (03/51، 41/44 و 09/12 درصد) بیشتر از گاو (40/48، 34/36 و 76/8) بود (05/0P<). پتانسیل تولید گاز (B) کاه توسط قارچ‌ها و WRM گاو بیشتر از گاومیش بود (05/0P<). نرخ تولید گاز (C) توسط WRM و قارچ‌های شکمبه گاومیش بیشتر از گاو بود (05/0P<). صرف نظر از نوع میکروارگانیسم، C کاه در گاومیش بیشتر از گاو بود (05/0P<)، و بلعکس برای B بود (05/0P<). صرف نظر از نوع دام، قابلیت هضم و B برای WRM بیشتر از قارچ‌ها بود (05/0P<)، اما برای نرخ تولید گاز بین آنها تفاوتی وجود نداشت. در روش SRAFC، DMD کاه در گاومیش در روزهای 3 و 12 بیشتر از گاو بود (05/0P<). تعداد قارچ‌ها در شکمبه گاو بیشتر از گاومیش بود (05/0P<). در کل، می‌توان بیان نمود که توان قارچ‌ها و WRM گاومیش بیشتر یا برابر با گاو بود. بنابراین، نتایج برتری گاومیش نسبت به گاو هلشتاین در استفاده از مواد فیبری کم کیفیت را نشان داد.
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