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مقایسه تاثیر سیلاژهای ذرت، سورگوم و ارزن بر مصرف خوراک و قابلیت هضم مواد مغذّی و فراسنجههای شکمبهای در بز | ||
| علوم دامی | ||
| دوره 35، شماره 134، خرداد 1401، صفحه 43-58 اصل مقاله (2.01 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2021.354391.2151 | ||
| نویسندگان | ||
| رضا آقایی پور1؛ محمد مهدی شریفی حسینی* 2؛ رضا طهماسبی3؛ امید دیانی4 | ||
| 1دانش آموخته کارشناسی ارشد تغذیه دام، بخش علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران. | ||
| 2استادیار بخش علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران. | ||
| 3دانشیار بخش علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران. | ||
| 4استاد بخش علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان ایران. | ||
| چکیده | ||
| به منظور مقایسه تاثیر سیلاژهای ذرت، سورگوم و ارزن بر مصرف و قابلیت هضم مواد مغذّی، و فراسنجههای شکمبهای از شش راس بز رائینی نر دو ساله با میانگین وزن 5/6±37 در یک طرح مربع لاتین 3×3 در دو تکرار استفاده شد. مصرف ماده خشک و دیگر مواد مغذّی در جیره سیلاژ ذرت بیشتر از دو جیره آزمایشی دیگر بود و در جیره دارای سیلاژ سورگوم بیش از ارزن بود (05/0P<). قابلیت هضم ماده آلی در سیلاژ ذرت بیش از سیلاژ ارزن بود (05/0P<). در ساعتهای دو، چهار، شش و هشت ساعت بعد از مصرف خوراک، غلظت نیتروژن آمونیاکی در جیره سیلاژ ذرت بیش از جیره دارای سیلاژ ارزن بود (05/0P<)، امّا بین جیرههای دارای سیلاژهای ذرت و سورگوم تفاوت معنیداری وجود نداشت. هشت ساعت بعد از مصرف خوراک، pH شکمبهای در جیره سیلاژ سورگوم کمتر از دو جیره آزمایشی دیگر بود (05/0P<). جمعیت پروتوزوای هولوتریش، سلولایتیک، انتودینیوم و کل پروتوزوآء در جیره دارای سیلاژ ذرت بیش از جیره دارای سیلاژ سورگوم و در جیره دارای سیلاژ سورگوم بیش از جیره دارای سیلاژ ارزن بود (05/0P<). نوع سیلاژها در جیرههای آزمایشی بر تولید پروتئین میکروبی در شکمبه تاثیر معنیداری نداشتند. تولید اسید والریک و ایزووالریک در جیره دارای سیلاژ ارزن بیشتر از جیره دارای سیلاژ سورگوم بود (05/0P<). نتایج آزمایش نشان دهنده کیفیت مناسبتر سیلاژ ذرت بود، اما کمبود آب و خشکسالیهای اخیر کاشت علوفههای با مصرف کمتر آب را ناگزیر میکند. | ||
| کلیدواژهها | ||
| اسیدهای چرب فرار؛ بز رائینی؛ پروتوزوا؛ پروتئین میکروبی؛ نیتروژن آمونیاکی شکمبه | ||
| عنوان مقاله [English] | ||
| Comparison the effect of corn, sorghum and millet silages on feed intake, digestibility and ruminal parameters in goat | ||
| نویسندگان [English] | ||
| Reza aghaeipoor1؛ mohammad mahdi sharifi hosseini2؛ Reza Tahmasbi3؛ Omid Dayani4 | ||
| 1Department of Animal Science, faculty of Agriculture, Shahid Bahonar university of Kerman, Kerman Iran. | ||
| 2Assistant Professor of Animal Nutrition, Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| 3Reza Tahmasbi (PhD) Associate Professor Department of Animal Science College of Agriculture Shahid Bahonar University of Kerman | ||
| 4Shahid Bahonar University of Kerman | ||
| چکیده [English] | ||
| In order to compare the effect of corn, sorghum and millet silages in experimental diets on nutrient intake, digestibility, and ruminal parameters, six two-year-old male Rainy goats were used with an average weight of 37±6.5 in a 3×3 Latin square design. Dry matter and other nutrients intake was higher in corn silage diet than the other two experimental diets and in sorghum silage diet was higher than millet silage diet (P<0.05). The organic of matter digestibility was higher in corn silage than millet silage diet (P<0.05). The rumen NH3-N concentration in corn silage diet was higher than millet silage diet at two, four, six and eight hours after feeding (P<0.05), but there was no significant difference between diets containing corn silage and sorghum silage at any time. The ruminal pH in sorghum silage was lower than the other two experimental diets at Eight hours after feed intake (P<0.05). The population of Holotrich, Cellolytic, entodinium protozoa and the total population of protozoa were higher in corn silage than sorghum silage diet and in sorghum silage diet were higher than the diet millet silage diet (P<0.05). The type of silages in the experimental diets had no significant effect on the production of ruminal microbial protein. But the production of valeric and isovaleric acid was higher in the millet silage diet than the sorghum silage diet (P<0.05). The experimental results showed a better quality of corn silage, but water shortages and recent droughts make it necessary to plant fodder with lower water consumption. | ||
| کلیدواژهها [English] | ||
| Microbial protein, Protozoa, Raini goat, Ruminal ammonia nitrogen, Volatile fatty acids | ||
| مراجع | ||
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