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مطالعه اثرات برنامه افزودن اسیدهای آلی به خوراک روی عملکرد رشد، مورفولوژی، اسیدیته و شمار میکروبی روده جوجه خروسهای گوشتی | ||
| فصلنامه علمی زیست شناسی جانوری تجربی | ||
| دوره 11، شماره 2 - شماره پیاپی 42، آذر 1401، صفحه 67-76 اصل مقاله (259.56 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.30473/eab.2023.65671.1890 | ||
| نویسندگان | ||
| فاطمه مرادی1؛ حمیدرضا علی اکبرپور* 2؛ سید مسعود هاشمی3 | ||
| 1دکتری دامپزشکی، واحد بابل، دانشگاه آزاد اسلامی، بابل، ایران | ||
| 2استادیار، گروه تغذیه، دانشکده دامپزشکی، واحد بابل، دانشگاه آزاد اسلامی، بابل، ایران | ||
| 3استادیار، گروه میکروبیولوژی، دانشکده دامپزشکی، واحد بابل، دانشگاه آزاد اسلامی، بابل، ایران | ||
| چکیده | ||
| اسیدیفایرهای مختلف از لحاظ نوع و نسبت اسیدهای آلی برای مصرف در تغذیه جانوران معرفی شدهاند. آزمایش با هدف بررسی اثرات مصرف اسیدیفایر حاصل از مخلوط اسیدهای آلی (فرمیک، سیتریک، پروپیونیک، استیک بههمراه نمکهای آنها) و برنامه مصرف آن روی صفات عملکردی و برخی خصوصیات روده جوجههای گوشتی انجام پذیرفت. از اینرو 180 قطعه جوجه خروس یک روزه سویه راس، در قالب طرح کاملاً تصادفی با سه تیمار، شش تکرار و 10 جوجه در هر تکرار، بهمدت 35 روز مورد بررسی قرار گرفتند. تیمارها شامل 1- جیره پایه (شاهد)، 2- جیره پایه حاوی مصرف روزانه اسیدهای آلی 3- جیره پایه حاوی مصرف یک روز در میان اسیدهای آلی بود. در مراحل آغازین و رشد، مصرف خوراک گروههای 2 و 3 نسبت به شاهد کمتر بود (05/0P<). در مرحله آغازین، رشد شاهد بیشتر از گروههای 2 و 3 بود (05/0P<). تفاوت معنیداری در رشد گروههای آزمایشی طی مراحل رشد، پایانی و انتهای دوره پرورش مشاهده نشد. گروه 2 در مرحله رشد، ضریب تبدیل خوراک بهتر نسبت به شاهد داشت (05/0P<). شمار انتروباکتریاسه ایلئوم گروههای 2 و 3 کمتر از شاهد بود (05/0P<). میانگین ارتفاع، عرض و مساحت پرز، عمق کریپت و همچنین نسبت ارتفاع پرز به عمق کریپت در ایلئوم و pH محتویات ایلئوم و دئودنوم تفاوت معنیداری میان گروههای آزمایشی نداشت. نتایج نشان داد، مصرف اسیدهای آلی سبب کاهش شمار برخی میکروارگانیزمهای مضر روده و بهبود ضریب تبدیل خوراک میشود. مصرف روزانه اسیدهای آلی نسبت به یکروز در میان، تأثیر مهمتری روی بهبود عملکرد پرنده دارد. | ||
| کلیدواژهها | ||
| انتروباکتریاسه؛ اسیدهای آلی؛ جوجه گوشتی؛ رشد؛ روده | ||
| عنوان مقاله [English] | ||
| Study on the Effects of Dietary Addition of Organic Acids Program on Growth Performance, Intestinal Morphology, Acidity and Microbial Count in Male Broiler Chickens | ||
| نویسندگان [English] | ||
| Fatemeh Moradi1؛ Hamidreza Aliakbarpour2؛ Seyed- Masood Hashemi3 | ||
| 1Ph. D., Faculty of Veterinary Medicine, Babol Branch, Islamic Azad University, Babol, Ir | ||
| 2Assistant Professor, department of Animal Nutrition, Faculty of Veterinary Medicine, Babol Branch, Islamic Azad University, Babol, Iran | ||
| 3Assistant Professor, department of Microbiology, Faculty of Veterinary Medicine, Babol Branch, Islamic Azad University, Babol, Iran | ||
| چکیده [English] | ||
| Different acidifiers have been introduced for animal nutrition in terms of type of organic acids and their composition. This study aimed to investigate the effects of consumption acidifier obtained from a mixture of organic acids (containing formic, citric, propionic and acetic acid and their salts) on the broiler chicks growth performance and some intestinal parameters .Therefore, one hundred eighty 1-d old male Ross broiler chicks were studid in a completely randomized design to 3 nutritional treatments with 6 replicates and 10 broiler chicks in each replicate, from d 0 to 35 posthatch. The treatments included 1. a corn-soybean based commercial diet or Un-supplemnted diet (Control), 2. Control diet supplemented with acidifier daily and 3. Control diet supplemented with acidifier every other day. All of dietary treatments were formulated to meet the National Research Council (1994) and Ross nutrient requirements for starter (1 to 11 d), grower (12 to 24 d), and finisher (25 to 35 d) growth periods. The results showed that in the starter and grower phase, feed intake in groups 2 and 3 that had consumpted organic acids were less than control group or un-supplemented organic acids (P˂0.05). In the starter phase, mean of body weight gain of un-suplemented group or control was higher than the groups 2 and 3 or supplemented daily and every other day group, respectively (P˂0.05); but experimental groups showed no significant change in their body weight gain during grower and finisher phases as well as whole rearing period affected by consumption of organic acids. The group 2 (daily supplemented) had better feed conversion ratio than control group during growth period (P˂0.05). The mean of ileal Enterobacteriaceae counts for the groups that had consumpted acidifiers (daily or every other day) were significantly lower than control group (P˂0.05). The mean of villus length, villus width, crypt depth and villus height to crypt depth ratio of the ileum had no significant difference between groups affected by consumption of organic acids. The pH of ileal and duodenal contents between groups showed no significancy. The results of the present study revealed that supplemented diets with organic acids can reduce some of intestinal pathogens, improve the feed conversion ratio. Daily consumption of Organic acids was more effective than when it was consumption every other day for the bird growth performance characteristics. | ||
| کلیدواژهها [English] | ||
| Broiler, Enterobacteriaceae, growth, intestine, organic acids | ||
| مراجع | ||
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