نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشآموخته کارشناسی ارشد، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان
2 دانشیار، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان
3 دانشیار بازنشسته دانشگاه کشاورزی و منابع طبیعی رامین خوزستان
4 استادیار، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study was conducted to compare fungi and whole rumen microorganisms (WRM) digestibility of treated sugarcane pith by fungi and of buffalos and Holstein cows. Dry matter (DM), neutral and acid detergent fiber (NDF and ADF) digestibilities of steam treated sugarcane pith (STP) by fungi and WRM were compared with a two-steps digestion technique, gas production (GP) and specific rumen fungi culturing (SRFC). Dry matter, NDF and ADF digestibilities of steam treated sugarcane pith by WRM in buffalo were higher (62, 32.31 and 22%, respectively) than cow (50.13, 27.07 and 16.2%, respectively) (P<0.05). Regardless of microorganisms type, digestibility of DM, NDF and ADF were greater in buffalo (54.13, 27.51 and 19.86%) than in buffalo (49.69, 24.54 and 14.67) (P<0.05). Potential of GP (B) of STP by WRM in cow was numerically more than that of cow (P>0.05). Fractional rate of GP (C) for WRM and fungi was lower in cow than buffalo (P<0.05). Regardless of microorganisms type, C was higher in buffalo was more than cow (P<0.05) and vice versa for B (P>0.05). Regardless of animal species, whole rumen microorganisms had higher digestibility and potential of GP than fungi (P>0.05), but there was not any difference for rat of GP between them. In SRFC, DM digestibility of STP by fungi at day 12 in buffalo was significantly more than cow (P<0.05). The concentration of fungi per ml of rumen liquer in cow was more than buffalo (P<0.05). Although, the rumen population fungi in cow was more than buffalo, but that digestibility of fungi (in specific rumen fungi culture) and WRM of buffalo was more than cow in present experiment. Therefore, the results of this study showed the advantage and supremacy of buffalo in usage the low quality roughages.
کلیدواژهها [English]