Effect of (Pleurotus florida) Fungi on Chemical Composition and Rumen Degradability of Wheat and Barley Straw
محورهای موضوعی : Camelم. ناصحی 1 , ن.م. تربتی نژاد 2 , س. زره داران 3 , ا.ر. صفایی 4
1 - Department of Ruminant and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
2 - Department of Ruminant and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
3 - Department of Ruminant and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
4 - Department of Ruminant and Poultry Nutrition, Faculty of Animal Science, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
کلید واژه: nylon bag, Fungi, nutritive value, Straw,
چکیده مقاله :
This study was conducted to investigate the effect of biological treatment withPleurotus floridafungi on chemical composition and rumen dry matter (DM) and organic matter (OM) degradability of wheat and barley straw. Wheat and barley straw were collected from Golestan province of Iran and after pasteurization mixed with fungi spawn (than 5% by weight). After 21 days samples were dried in oven (60 ˚C) in order to stop fungi growth. Dry matter (DM) and organic matter (OM) degradation determined using nylon bag technique with two fistulated Dalagh rams and sampleswereincubated at zero to 96 hours in rumen. Fungi cultivation significantly decreased the amount of dry matter (DM), Neutral detergent fiber (NDF) and acid detergent fiber (ADF) in wheat and barley straw (P<0.01). Ash and crude protein (CP) content significantly increased with processing by fungi in treatments (P<0.01). Ether extract (EE) and acid detergent lignin (ADL) content did not differ by processing with fungi. The soluble fraction (a) and potential degradability (a+b) of dry matter (DM) increased (P<0.05) by processing with fungi in both straw. Theinsoluble but potentially degradable fraction (b) of dry matter (DM) degradability increased (P<0.05) by processing with fungi in wheat straw, but did not change in Barley straw. The a and a + b fractions of organic matter (OM) degradability increased (P<0.01) by processing in both straw. The b fraction of organic matter (OM) degradability increased (P<0.01) by processing with fungi in wheat straw, but did not observed difference in Barley straw. Therefore, it has been concluded that the treating the wheat and barley straw with fungi improved the nutritive value in the present study.
این تحقیق به منظور بررسی اثر عملآوری بیولوژیکی با قارچ پلوروتوس فلوریدا بر ترکیب شیمیایی و تجزیهپذیری شکمبه‌ای ماده خشک و آلی کاه گندم و جو انجام گرفت. کاه گندم و جو از مزارع استان گلستان ایران جمعآوری و بعد از پاستوریزه کردن، با اسپان قارچ (5 درصد وزن تر) مخلوط شد. بعد از 21 روز نمونهها در آون (60 درجه سانتیگراد) به منظور توقف رشد قارچ خشک شد. تجزیهپذیری ماده خشک و آلی به روش کیسههای نایلونی با استفاده از دو رأس قوچ دالاق فیستولا گذاری شده تعیین گردید و نمونهها از صفر تا 96 ساعت در شکمبه قرار داده شدند. کشت قارچ به طور معنیداری مقدار ماده خشک، NDF و ADF را در کاه گندم و جو کاهش داد (01/0P<). خاکستر و پروتئین خام به شکل قابل توجهی در تیمارهای آزمایشی با کشت قارچ افزایش یافت (01/0P<). مقدار عصاره اتری و ADL در اثر عملآوری با قارچ تغییر معنیداری پیدا نکرد. بخش محلول (a) و بالقوه قابل تجزیه (a+b) ماده خشک در اثر عملآوری با قارچ به طور معنیداری در هر دو کاه افزایش یافت (05/0P<). بخش نامحلول اما قابل تجزیه (b) ماده خشک کاه گندم در اثر عملآوری با قارچ به طور معنیداری افزایش یافت (05/0P<)، اما در کاه جو تغییر معنیداری پیدا نکرد. بخش a و a+b تجزیهپذیری ماده آلی در اثر عملآوری در هر دو کاه افزایش یافت (01/0P<). بخش b تجزیهپذیری ماده آلی در اثر عملآوری با قارچ در کاه گندم به شکل قابل توجهی افزایش یافت (01/0P<)، اما در کاه جو تغییری پیدا نکرد. بنابراین، نتیجه گرفته میشود که عملآوری با قارچ ارزش غذایی کاه گندم و جو را در تحقیق حاضر بهبود بخشید.
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