Determination of Chemical Composition, Degradability and Digestibility of Treated Walnut Hull by Neurospora sitophila
محورهای موضوعی : Camelم. تکلوزاده 1 , ا. دیانی 2 , ر. طهماسبی 3
1 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
3 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
کلید واژه: digestibility, chemical composition, degradability, neurospora sitophila, walnut hull,
چکیده مقاله :
In this study, the nutritive values of treated Walnut hull by Neurospora sitophila were evaluated. The chemical composition of samples was evaluated by laboratory analysis.In vitrodigestibility experiment was done to determine digestibility coefficients of dry matter, organic matter and also digestible organic matter in dry matter (DOMD) to estimate the metabolizable energy (ME) content oftreated Walnut hull. In addition, organic matter (OM) and neutral detergent fiber (NDF) disappearance of samples were determined by In-Situ method at 0, 3, 6, 12, 24, 48 and 72 h after incubation and their kinetics were described using the equation P= a + b(1−e−ct). The nutritive value index (NIV) of samples was calculated using the equation: NIV= a + 0.4b + 200c. The collected data was analyzed in a completely randomized design. The content of tannin and phenol in walnut hull decreased significantly by processing (P<0.05). No significant effect was seen on degradability parameters and nutritive value index. Digestibility coefficient of dry matter, organic matter, digestible organic matter in dry matter and metabolizable energy of treated walnut hull were significantly (P<0.05) lower than untreated Walnut hull.
در این تحقیق ارزش غذایی پوست گردوی فرآوری شده با قارچ نوروسپورا سیتوفیلا مورد بررسی قرار گرفت. ترکیب شیمیایی نمونه‌ها به وسیله آنالیزهای آزمایشگاهی ارزیابی شد. آزمایش قابلیت هضم به روش in vitro برای تعیین ضرایب هضم ماده خشک، ماده آلی و همچنین ماده آلی در ماده خشک برای تخمین مقدار انرژی قابل متابولیسم پوست گردوی فرآوری شده انجام شد. تجزیه پذیری ماده آلی و مواد نامحلول در شوینده خنثی نمونه‌ها با روش in situ در ساعت‌های صفر، 3، 6، 12، 24، 48 و 72 ساعت پس از انکوباسیون تعیین شد و کینتیک آنها با استفاده از فرمول P= a + b(1−e−ct) توضیح داده شد. شاخص ارزش غذایی نمونه‌ها با استفاده از معادله NIV= a + 0.4b + 200c محاسبه گردید. داده‌های به دست آمده در قالب طرح کاملاً تصادفی آنالیز شدند. مقدار تانن و فنول پوست گردو به وسیله فرآوری کاهش پیدا کرد (05/0>P). هیچ تأثیر معنی داری بر پارامترهای تجزیه پذیری و شاخص ارزش غذایی پس از فرآوری مشاهد نشد. ضرایب هضمی ماده خشک، ماده آلی، ماده آلی در ماده خشک و انرژی قابل متابولیسم پوست گردوی فرآوری شده به طور معنی داری کمتر از پوست گردوی فرآوری نشده بود (05/0>P).
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