تأثیر یک مخلوط خوراکی جدید بر هورمون‌های جنسی و دوره پرریزی قناری‌ها و مرغ‌های تخمگذار

Subject Areas : Camel

ج. سالاری ¹ (Department of Animal Science, Faculty of Agriculture, Bu Ali Sina University, Hamedan, Iran)
ح.ر. همتی متین ² (Department of Animal Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran)
ح. حاجاتی ³ (Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran)

Received: 2016-04-04 Accepted : 2016-07-15 Published : 2016-12-01

Keywords: مرغ تخمگذار, قناری, افزودنی گیاهی, پرریزی,

Abstract :

برای تعیین تأثیر یک مخلوط خوراکی جدید شامل گیاه پنج انگشت، آویشن، اسطوخودوس، گل همیشه بهار بر کوتاه کردن دوره پرریزی و غلظت هورمون­های جنسی قناری­ها و مرغ­های تخمگذار 2 آزمایش اجرا شد. در آزمایش اول، تعداد 120 قناری ماده دچار پرریزی به مدت 135 روز به 12 قفس (هر کدام شامل 10 پرنده) اختصاص داده شد. تیمارها شامل کنترل (آب آشامیدنی بدون مخلوط خوراکی)، 25/1 گرم یا 25/2 گرم مخلوط گیاهی خوراکی در یک لیتر آب آشامیدنی بود. در آزمایش دوم، تعداد 72 مرغ تخمگذار دچار پرریزی به 24 قفس (هر قفس شامل 3 پرنده) به مدت 21 روز اختصاص داده شد و تیمارهای خوراکی مشابه آزمایش اول بود. نتایج نشان داد که در روزهای 45، 90 و 135 غلظت هورمون پرولاکتین پلاسما به طور خطی و درجه 2 کاهش و غلظت پروژسترون و استروژن پلاسمای مرغ­های تخمگذار با افزایش سطح مخلوط خوراکی افزایش خطی داشت. در روز 21 آزمایش، با افزایش سطح مخلوط خوراکی غلظت هورمون پرولاکتین، پروژسترون و استروژن پلاسما در مرغ­های تخمگذار افزایش یافت. همچنین با افزایش سطح مخلوط خوراکی دوره رشد مجدد پر در قناری­ها و مرغ­های تخمگذار کاهش یافت. در هفته­های اول، دوم و سوم تولید تخم مرغ در مرغ­های تخمگذار بدون اثر معنی­دار بر مصرف آب و خوراک افزایش یافت. استفاده از مخلوط گیاهی در آب آشامیدنی قناری­ها سبب افزایش تولید هورمون­های جنسی و کوتاه شدن دوره پرریزی شد. همچنین این افزودنی خوراکی جدید تأثیر محرک بر تولید تخم مرغ مرغ­های تخمگذار بدون اثر بر مصرف آب و خوراک داشت.

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