تاثیر استفاده از افزودنی‌های مختلف بیولوژیکی بر ترکیب شیمیایی و خصوصیات تخمیری سیلاژ ذرت

پژوهشهای علوم دامی ایران

مقاله 1، دوره 14، شماره 1 - شماره پیاپی 49، فروردین 1401، صفحه 1-12   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/ijasr.2021.38281.0

نویسندگان

اکبر تقی زاده^* ؛ الناز مرادی؛ حمید محمدزاده؛ مقصود بشارتی

گروه علوم دامی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران

چکیده

متخصصین تغذیه نشخوارکنندگان، به دنبال استفاده از ترکیباتی هستند که با تغییر جمعیت و فعالیت میکروارگانیسم های شکمبه، بازده استفاده از انرژی و پروتئین خوراک را افزایش دهند. هدف از پژوهش حاضر بررسی تاثیر استفاده از دو محصول تجاری حاوی افزودنی‌های میکروبی لالسیل و افزودنی بیولوژیکی EM بر ترکیب شیمیایی، پروفایل تخمیری و میزان تولید گاز سیلاژ ذرت بود. این تحقیق در قالب طرح کاملا تصادفی با چهار تیمار و سه تکرار انجام گرفت. تیمارها شامل 1. تیمار شاهد بدون افزودنی میکروبی، 2. سیلاژذرت + افزودنی لالسیل به میزان 10⁶×8/1CFU  به ازای هر گرم علوفه تازه، 3. سیلاژ ذرت + 02/0 درصد EM و 4. سیلاژ ذرت + 04/0 درصد EM (EMH) بود. مکمل کردن لالسیل و EM به سیلاژ ذرت کاهش معنی­داری بر pH سیلاژ ذرت در مقایسه با گروه شاهد داشت، به طوری­که کمترین pH مربوط به گروهی بود که افزودنی لالسیل اضافه شده بود. افزودن لالسیل و EM تاثیر معنی­داری بر الیاف نامحلول در شوینده­ی خنثی نداشت. بیشترین مقدار گاز تولیدی مربوط به تیمارهای EMH و لالسیل بود. افزودنی EM در سطح 04/0 درصد و افزودنی لالسیل هر دو موجب افزایش تولید گاز سیلاژ ذرت شدند. ولی افزودنیEM  در سطح 02/0 درصد تفاوت معنی­داری با گروه شاهد نداشت. افزودن لالسیل و EM تاثیر معنی­داری بر الیاف نامحلول در شوینده­های خنثی و الیاف نامحلول در شوینده اسیدی نداشت.

کلیدواژه‌ها

افزدونی‌های میکروبی؛ ترکیب شیمیایی؛ سیلاژ ذرت؛ لالسیل؛ میکروارگانیسم‌های موثر

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