اثرات استفاده از گیاهان پونه و آویشن شیرازی بر ‌خصوصیات رشد و صفات لاشه و بار میکروبی

نوع مقاله: علمی پژوهشی

نویسندگان

1 دانش‌آموخته گروه مهندسی شیمی موادغذایی، گروه مهندسی شیمی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران.

2 دانشیار گروه منابع طبیعی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران.

3 استادیار گروه دامپزشکی، واحد کرمانشاه، دانشگاه آزاد اسلامی، کرمانشاه، ایران.

چکیده

اخیراً استفاده از گیاهان داروئی به‌عنوان محرک رشد، اشتهاآور، افزایش‌دهنده سطح ایمنی و نیز با داشتن خاصیت ضدمیکروبی، در صنعت پرورش طیور مورد توجه قرار گرفته است. به این منظور تأثیر مکمل­سازی دو گیاه آویشن شیرازی و پونه بر خصوصیات رشد، وضعیت لاشه و بار میکروبی روده جوجه‌های گوشتی مورد بررسی قرار گرفت. این مطالعه در قالب طرح کاملاً  تصادفی با 120 قطعه جوجه گوشتی سویه راس در 4 تیمار و 3 تکرار (هر تکرار 10 قطعه) انجام شد. رژیم غذایی در تیمارها عبارت از تیمار1، 2، 3 و 4 به­ترتیب حاوی جیره کارگاه پرورش بدون استفاده از این گیاهان، حاوی پودر پونه به­میزان 2 درصد وزن جیره، حاوی آویشن به­میزان 2 درصد وزن جیره، حاوی آویشن به­میزان 2 درصد وزن جیره به علاوه پونه به­میزان 2 درصد وزن جیره بود. طول دوره 42 روز بود و هر هفته وزن‌گیری انجام شد. همچنین در پایان دوره نیز وزن کلی لاشه، وزن ران ، وزن سینه و بار میکروبی روده اندازه‌گیری گردیده و نتایج با استفاده از آزمون آنالیز واریانس یک­طرفه و آزمون تعقیبی دانکن در سطح اطمینان 95 درصد مورد تحلیل آماری قرار گرفت. نتایج نشان داد که در وزن کلی لاشه، وزن ران و وزن سینه در هیچ‌یک از گروه­های مورد آزمایش تفاوت آماری معنی‌داری دیده نشد، اما تعداد کلی باکتری‌های روده در اثر استفاده از این دو مکمل به­شکل معنی‌داری کاهش یافت (05/0>p) به طوری که بیشترین میزان بار میکروبی در گروه شاهد دیده شد. بنابراین باید گفت که استفاده از مکمل‌های پونه و آویشن در جوجه‌ها بار میکروبی را کاهش می‌دهد، لذا با جایگزینی آن‌ها می‌توان تولید ارگانیک و ایمن را انتظار داشت. 

کلیدواژه‌ها


عنوان مقاله [English]

The effects of Mentha pulegium and Zataria multiflora on growth and carcass specifications and gut microbial count in broiler chickens

نویسندگان [English]

  • M Godarzi 1
  • N. Choobkar 2
  • F Mohammadi 3
1 Msc of Chemistry Engineering, Food Material, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
2 Associate Professor, Department of Natural Resources, Faculty of Agriculture, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
3 Assistant Professor, Department of Veterinary Medicine, Faculty of Agriculture, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
چکیده [English]

Recently, the use of medicinal plantsas growth promoters, appetizers, immunological boosters and antimicrobial substances has increased in poultry industry. In this regard, the effect of Zataria multifloraand Mentha pulegium on growth characteristics, carcass quality and gut microbial count of broiler chickens were investigated. This research was carried out in a completely randomized design with 120 broiler chickens of Ross strain in 4 different feed treatment groups and 3 replicates consisting of 10 chickens each. The treatment groups consisted of T1 (Control) fed with basic diet (without plants), T2 fed with basic diet containing 200 mg/kg of dried Mentha pulegium, T3 fed with  diet containing 200 mg/kg of dried Zataria multiflora and T4 fed with diet containing a mixture of 200 mg/kg dried Zataria multiflora and 200 mg/kg dried Mentha pulegium  for 6 weeks. All chickens were weighed weekly and at the end of the experimental period, growth characteristics including carcass weight, thigh weight and breast weight and intestinal microbial total count were measured in each group. The results were evaluated by one-way ANOVA and Duncan’s post-hoc test in SPSS 19. The results showed that the mean weight, the weight of thighs and breasts between  treatment groups were not  statistically significant but the intestinal bacterial count was decreased by these supplements (p<0.05). The maximum microbial load was observed in the control group (T1). Therefore, it can be concluded that the use of these supplements in chicken feed reduces intestinal microbial counttherefore organic and safe meat production can be expected.

کلیدواژه‌ها [English]

  • broiler chicken
  • Mentha pulegium
  • Zataria multiflora
  • growth
  • Microbial count
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