تأثیر دانه کلزا و کتان بر قابلیت هضم و برخی فراسنجه‌های خونی میش‌های کردی در دوره پس از زایش

نوع مقاله : مقاله پژوهشی

نویسندگان

1 محقق ، مرکز تحقیقات کشاورزی و منابع طبیعی خرسان شمالی، سازمان تحقیقات آموزش و ترویج کشاورزی، تهران، ایران

2 استاد، گروه علوم دامی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

چکیده

سابقه و هدف: مشخص شده که استفاده از چربی در جیره باعث بهبود عملکرد تولید مثلی و شیردهی می‌گردد. بنابراین این آزمایش به منظور بررسی اثرات افزودن دانه کتان و کلزا به جیره میش‌های کردی، بر پاسخ قابلیت هضم مواد مغذی، برخی متابولیت‌ها و هورمون‌های خونی پس از زایش انجام شد.
مواد و روش: این طرح در قالب طرح کاملا تصادفی انجام شد. تیمارها شامل 1) جیره بدون دانه روغنی 2) جیره حاوی 6% ماده خشک دانه کلزا 3) جیره حاوی 6% ماده خشک دانه کتان 4) جیره حاوی 3% ماده خشک دانه کتان و 3% ماده خشک دانه کلزا بود. قابلیت هضم خوراک طبق روش ونکولن و یانگ (1977) محاسبه شد. نمونه‌گیری خون در هفته‌های 5، 3 و 1 بعد از زایش برای بررسی متابولیت‌ها و هورمون‌های خون انجام شد. مایع شکمبه از راه دهان به وسیله یک لوله که انتهای آن دارای سوراخ‌های متعددی بود، توسط دستگاه مکنده اخذگردید. تجزیه و تحلیل آماری داده‌ها، با استفاده از رویه GLM نرم افزار آماری SAS انجام گردید. میانگین داده‌های آزمایش با آزمون توکی-کرامر و در سطح معنی‌داری پنج و یک درصد مقایسه شد.
نتایج: نتایج نشان داد تأثیر تیمارها بر pH شکمبه در دوره بعد از زایش در سطح 5 درصد معنی‌دار بود، به طوری‌که بیشترین pH مربوط به تیمار دارای دانه کلزا (60/6) بوده است. میزان گلوکز خون در همه دوره های پس از زایش (1، 3 و 5 هفته) به طور معنی‌داری در تیمارهای دانه‌های روغنی افزایش یافت (01/0P<). بیشترین میزان گلوکز مربوط به تیمار دانه کلزا در هفته پنجم زایشmg/dl) 90/90) بوده است. میزان کلسترول خون در هر سه دوره در تیمارهای دانه‌های روغنی به طور معنی‌داری افزایش یافت و بیشترین میزان کلسترول مربوط به تیمار یک هفته بعد از زایش در ترکیب کلزا و کتان mg/dl) 85) بوده است (01/0P<). میزان انسولین در تیمار کلزا در هفته سوم و پنجم به طور معنی‌داری افزایش یافت (01/0P<). در بین فاکتورهای قابلیت هضم، ماده خشک در تیمارهای دانه‌های روغنی افزایش یافت و بیشترین میزان ماده خشک در تیمار مخلوط کتان و کلزا (42/54) بوده است (05/0P<). میزان NDF در تیمارهای دانه‌‌های روغنی به طور معنی‌داری کاهش یافت و کمترین میزان NDF در تیمار دانه کلزا (52/45) بوده است (05/0P<).
نتیجه‌گیری: نتیجه گیری کلی حاصل از این تحقیق نشان داد که استفاده از دانه‌های روغنی کتان، کلزا و ترکیب این دو باعث بهبود قابلیت هضم شده و تاثیر مثبت درفرانسجه‌های خونی در دوره پس از زایش داشته است. بنابراین توصیه می‌شود از جیره حاوی 3 درصد ماده خشک دانه کتان و 3 درصد ماده خشک دانه کلزا در دروه پس از زایش استفاده گردد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of flaxseed and cannula seed on digestibility and some of blood parameters in Kurdish ewes durring Postpartum period

نویسندگان [English]

  • Hasan Elmi 1
  • abasali naserain 2
  • Abolmansour Tahmasebi 2
1 Researchist of North Khorasan Agricultural and Natural Resources Research and Training Center.
2 Professor of Animal Nutrition, Department of Animal Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad
چکیده [English]

Background and objectives: Dietary fat has been shown to improve reproductive performance and lactation. Therefore, this experiment was conducted to investigate the effects of adding cotton and canola to Kurdish ewes' diet on the ability to digest the nutrients, some metabolites and blood hormones were carried out after birth.
Materials and methods: The design was carried out in a completely random design. Treatments included 1) diet without oilseed 2) diet containing 6% cotton dry matter 3) diet containing 6% cotton dry matter 4) diet containing 3% f cotton and 3% cotton dry matter. Feed digestibility was calculated according to the method of Wankulen and Young (1977). Blood samples were taken at 5, 3 and 1 weeks after calving to assess blood metabolites and hormones. rumen fluid was obtained by oral sucker.
Results: The results showed that the effect of treatments on ruminal pH was significant at 5% level, with the highest pH related to canola seed treatment (6.60). Blood glucose levels were significantly increased in all treatments (1, 3 and 5 weeks) in treatments containing oilseed (P <0.01). The highest amount of glucose was related to canola seed treatment in the 5 week of calving (90.90 mg / dl). Blood cholesterol levels in all three treatments were significantly increased in treatments containing oilseed, and the highest cholesterol level was observed in the cotton and canola (85 mg/dl) treatment one week after calving (P <0.01). Insulin levels were significantly increased in canola treatment at week 3 and 5 (P <0.01). Among the digestibility factors, dry matter increased in treatments containing oilseed, and the highest dry matter was in cotton and canola (54.42) (P <0.05). NDF was significantly decreased in treatments containing oilseed and the lowest NDF was in canola seed treatment (45.52) (P <0.05).
Conclusion: The overall results of this study showed that the use of oilseeds improved digestibility and it has had a positive effect on blood cells. Therefore, it is recommended to use a diet containing 3% dry matter cotton and 3% canola dry matter in postpartum period.
Conclusion: The overall results of this study showed that the use of oilseeds improved digestibility and it has had a positive effect on blood cells. Therefore, it is recommended to use a diet containing 3% dry matter cotton and 3% canola dry matter in postpartum period.
Conclusion: The overall results of this study showed that the use of oilseeds improved digestibility and it has had a positive effect on blood cells. Therefore, it is recommended to use a diet containing 3% dry matter cotton and 3% canola dry matter in postpartum period

کلیدواژه‌ها [English]

  • canola
  • cotton
  • yield
  • Kurdish ewes

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نشریه پژوهش‌ در نشخوار کنندگان
دوره 8، شماره 1
خرداد 1399
صفحه 63-76

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