تأثیر افزودن روی و مس به جیرۀ میش‌های آبستن در اواخر دورۀ آبستنی بر پروفیل مواد کانی خون و شیر، عملکرد رشد بره‌ها و برخی فراسنجه‌های خونی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان، ایران

2 دانشیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان، ایران

3 استادیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان، ایران

4 دانشجوی دکتری، گروه علوم دامی، دانشکده کشاورزی، دانشگاه بوعلی سینا همدان، ایران

چکیده

هدف از این تحقیق بررسی تأثیر افزودن روی و مس به جیرۀ میش­های آبستن نژاد مهربان در اواخر دورۀ آبستنی بر رخ‌نمای (پروفیل) مواد کانی خون و شیر میش­ها، عملکرد رشد بره­های آن‌ها و برخی فراسنجه­های سوخت‌وسازی (متابولیکی) و خون‌شناختی (هماتولوژی) بود. هفده رأس میش­3-4 ساله، 45­روز پیش از زایمان به سه گروه تقسیم شدند. تیمارها شامل: 1) ­جیرۀ پایۀ بدون مکمل روی و مس­ (حاوی 98/18 قسمت در میلیون یا پی­پی­ام روی و 51/7 پی­پی­ام مس)؛ 2)­ جیرۀ پایه افزون بر 30­پی­پی­ام روی به‌صورت سولفات روی و 3) ­جیرۀ پایه افزون بر 30­پی­پی­ام روی به‌صورت سولفات روی و 8 پی­پی­ام مس به‌صورت سولفات مس بود. وزن تولد و وزن 10، 20 و 30­ روزگی بره­ها ثبت شد. در این مدت بره­ها به همراه مادر نگهداری می­شدند. خون­گیری از میش­ها در روزهای 45-، 0 و 30+ زایش و از بره­ها در سن 10 و20 روزگی به­عمل آمد. نمونۀ شیر در روزهای 0، 15­و 30 پس از زایش گرد­آوری شد. افزودن روی و مس به جیره سبب افزایش غلظت روی و مس پلاسما­(میش­ها و بره­ها) و شیر شد ­(05/0>P) اما غلظت آهن شیر و همچنین کلسیم، فسفر سرم بره­ها تحت تأثیر قرار نگرفت ­(05/0<P). در بره­های تیمار 2 و 3 نسبت به گروه شاهد، وزن بدن، افزایش وزن روزانه­، شمار گلبول­های قرمز خون، غلظت هموگلوبین، غلظت سرمی هورمون T3، عنصر روی و آنزیم ­ALP افزایش یافت (05/0>P). غلظت گلوکز، کراتینین، پروتئین کل، آلبومین، گلوبولین، لاکتات دهیدروژناز، تری­گلیسیرید و کلسترول پلاسمای بره­ها تحت تأثیر تیمارها قرار نگرفت ­(05/0<P). نتایج نشان داد، افزودن30­پی­پی­ام روی ­به جیرۀ میش­های آبستن سبب افزایش غلظت روی پلاسما و شیر و درنهایت عملکرد رشد بره­ها می­شود.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of adding zinc and copper to diet of late-pregnant ewes on blood and milk minerals profile, lambs growth performance and some blood parameters

نویسندگان [English]

  • Leyla Cheraghi Mashoof 1
  • Hassan Aliarabi 2
  • Abbas Farahavar 3
  • Pouya Zamani 2
  • Reza Alimohamady 4
1 Former M. Sc. Student, Department of Animal Science, Faculty of Agricultur, Bu-Ali sina University, Hamedan, Iran
2 Associate Professor, Department of Animal Science, Faculty of Agricultur, Bu-Ali sina University, Hamedan, Iran
3 Asistant Professor, Department of Animal Science, Faculty of Agricultur, Bu-Ali sina University, Hamedan, Iran
4 Ph. D. Candidate, Department of Animal Science, Faculty of Agricultur, Bu-Ali sina University, Hamedan, Iran
چکیده [English]

The aim of this study was to investigate the effect of zinc and copper adding to diet of late-pregnant Mehraban breed ewes, on blood and milk minerals profile, lambs growth performance and some blood parameters. Seventeen ewes with 3-4 years old, 45 days before delivery were divided into 3 groups. Treatments includes: treat1) basal diet without supplement (containing 18.98 ppm Zn and 7.51 ppm Cu); 2) basal diet+30 ppm Zn as zinc sulfate, and 3) basal diet+30 ppm zinc as zinc sulfate and 8 ppm Cu as copper sulfate.Lambs were weighed at birth and at 10, 20 and 30 days of age. Lambs were raised with their dams during the experimental period. Blood samples of ewes were collected at -45, 0 and +30 days of delivery and lambs at 10 and 20 days of age. Milk sample was collected at 0, 15, 30 days after delivery. Dietary supplementation of zinc and copper significantly increased plasma (ewes and lambs) and milk zinc and copper concentrations (P<0.05), however, milkiron and also serum Calcium and Phosphorus concentrations were not affected (P>0.05). In treat-2 and 3, lambs body weight, daily gain, red blood cells count, hemoglobin concentration, plasma T3, zinc and ALP concentrations were significantly higher than control group (P<0.05). The concentrations of glucose, creatinine, total protein, albumin, globulin, lactate dehydrogenase, triglycerides, cholesterol were not affected by treatments (P>0.05). The results showed that adding 30 ppm zinc to pregnant ewes' diet result in increase plasma and milk zinc concentrations and finally lambs growth performance.

کلیدواژه‌ها [English]

  • Blood parameters
  • pregnant ewes
  • Zinc and Copper Sulfate

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  • تاریخ دریافت: 07 بهمن 1396
  • تاریخ بازنگری: 27 اردیبهشت 1397
  • تاریخ پذیرش: 30 اردیبهشت 1397

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