تولیدات دامی

اثر سطوح مختلف مخمر زنده بر سلامت و عملکرد شکمبه گاوهای تغذیه‌شده با جیره‌های حاوی غلظت پایین و بالا کربوهیدرات های غیر فیبری

نوع مقاله : مقاله پژوهشی

نویسندگان

سید محمد رضا بهشتی 1
کامران رضایزدی 2
آریا بدیعی 3
مصطفی صادقی 2

1 دانشجوی دکتری، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران.

2 دانشیار، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران.

3 استادیار، دانشکده دامپزشکی، دانشگاه آزاد اسلامی واحد کرج، کرج، ایران.

https://doi.org/10.22059/jap.2021.311093.623562
چکیده
هدف از این پژوهش بررسی تأثیر مصرف سطوح مختلف مخمر زنده بر سلامت و عملکرد شکمبه گاوهای شیری تغذیه‌شده با جیره­های حاوی سطوح مختلف کربوهیدرات­های غیر فیبری بود. در این آزمایش،  از شش رأس گاو شیری فیستولاگذاری‌شده در قالب طرح مربع لاتین گردان با شش دوره زمانی (14 روزه) و شش جیره مختلف استفاده شد که تیمارهای آزمایش شامل 1- سطح کربوهیدرات­های غیر­فیبری پایین بدون مخمر، 2- سطح کربوهیدرات­های غیر­فیبری پایین همراه با پنج گرم مخمر، 3- سطح کربوهیدرات­های غیرفیبری پایین همراه با 10 گرم مخمر، 4- سطح کربوهیدرات‌های غیر­فیبری بالا بدون مخمر، 5- سطح کربوهیدرات­های غیر­فیبری بالا همراه با پنج گرم مخمر و 6- سطح کربوهیدرات­های غیرفیبری بالا همراه با 10 گرم مخمر بود. مصرف ماده خشک روزانه، فعالیت نشخوار، فراسنجه­های شکمبه­ای و متابولیت­های خونی در هر دوره اندازه­گیری شد. مصرف ماده خشک، فعالیت نشخوار و قابلیت هضم مواد مغذی، pH و میانگین دمای شکمبه تحت تأثیر تیمارهای آزمایش قرار نگرفت. شاخص­های عمومی سلامت و پلاسمای خون نیز تحت تأثیر تیمارهای آزمایشی قرار نگرفتند. به‌طورکلی نتایج این آزمایش نشان داد افزودن مخمر زنده به جیره‌هایی با  غلظت مختلف NFC  تأثیری بر عملکرد شکمبه­، قابلیت هضم مواد مغذی خوراک و متابولیت­های خونی ندارد.

کلیدواژه‌ها

سلامت
عملکرد شکمبه
کربوهیدرات‌های غیر‌فیبری
گاو شیری
مخمر زنده

عنوان مقاله English

The effect of different levels of live yeast on rumen function and health in cows fed diets containing low and high concentrations of non-fiber carbohydrates

نویسندگان English

seyed mohammad reza beheshti 1
kamran rezayazdi 2
arya badiei 3
Mostafa Sadeghi 2
1 Department of Animal Science Faculty of Agriculture University of Tehran
2 Department of Animal Science Faculty of Agriculture University of Tehran
3 Faculty of Veterinary Science Islamic Azad University Karaj Branch
چکیده English

The aim of this study was to investigate the effect of different levels of live yeast on ruminal function and health of dairy cows fed diets containing low and high concentrations of non-fiber carbohydrates (NFC). In this experiment, six cannulated dairy cows were randomly assigned in a Latin square design with six periods (14-days) and six treatments including 1- diet contain low NFC free of live yeast, 2-diet contain low NFC with 5 g/d of live yeast, 3-diet contain low NFC with 10 g/d of live yeast, 4-diet contain high NFC free of live yeast, 5-diet contain high NFC with 5 g/d of live yeast and 6-diet contain high NFC with 10 g/d of live yeast. Dry matter intake, rumination, ruminal parameters and blood metabolites were determined in the different periods. Dry matter intake, rumination activity, nutrient digestibility, mean ruminal pH and temperature were not affected by treatments. General and plasma indicators of animal healthwere also not affected by treatments. Overall, the results of this experiment indicated that dietary supplementation with live yeasthad no significant effect on rumen function and health in cows fed diets containing different concentrations of NFC.

کلیدواژه‌ها English

: Dairy cows
Health
Live yeast
Non-fiber carbohydrates
Rumen function
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تولیدات دامی
دوره 23، شماره 2
تابستان 1400
صفحه 213-221

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