مقایسه تجویز اکسی توسین وپروستاگلاندین اف دو آلفاجهت دفع جفت پس از القاء زایمان در تلیسه های هلشتاین
محورهای موضوعی : پژوهش های بالینی دام های بزرگ
کلید واژه: هلشتاین, پروستاگلاندین, اکسی توسین, القاء زایمان,
چکیده مقاله :
یکی از عوارض مهم القاء زایمان در گاوها و تلیسه ها، جفت ماندگی پس از زایمان است که باعث کاهش راندمان تولید مثلی در حیوان می‌شود.در این بررسی در 100 رأس تلیسه آبستن، القای زایمان بوسیله دگزامتازون به همراه دوز لوتئولتیک پروستاگلاندین انجام گرفت. 40 رأس تلیسه از 100 رأس، جهت بررسی و بدست آمدن نتایج این تحقیق، انتخاب گردیدند و به دو گروه 20 رأسی تقسیم شدند، و به هر یک از این دو گروه بمنظور دفع جفت پروستاگلاندین و اکسی توسین به ترتیب با دوز 750 میکرو گرم بر میلی‌لیتر (3 میلی لیتر) و 100 واحد بین‌المللی بصورت عضلانی تزریق شد. قابل توجه است که هر کدام از این دو گروه، خود به دو زیر مجموعه ی 10 تایی طبقه‌بندی شدند. این طبقه بندی بر اساس جنسیت گوساله های تازه به دنیا آمده بود.نتایج حاصل نشان داد درتلیسه هایی که پس از زایمان پروستاگلاندین دریافت کرده اند نسبت به تلیسه‌هایی که اکسی توسین به آنها تزریق شده است، بطور معنی‌داری زمان دفع جفت کاهش یافته است، همچنین در تلیسه‌هایی که گوساله نر به دنیا آورده و پس از زایمان پروستاگلاندین دریافت کرده اند بطور معنی‌داری کمترین زمان خروج جفت و تلیسه‌هایی که گوساله ماده به دنیا آورده وپس از زایمان اکسی توسین به آنها تزریق شده مدت زمان دفع جفت بطور معنی داری بیشتر است.
One of the serious complications of labor induction in cows and heifers reducing the reproductive efficiency of these animals (1, 8, and 10) is retained placenta after delivery. This study was conducted in a dairy cattle industry located in West Azerbaijan. The experiment was conducted on 100 pregnant heifers which their induction of labor was being carried out by prostaglandin and dexamethasone. Obtaining the exact results in this study, 40 out of 100 heifers were selected and divided into two groups. Each group containing 20 heifers were injected by prostaglandin and oxytocin intramuscularly to experience the disposal of fetal membranes. The dose for each shot of prostaglandin and oxytocin was respectively 750 μg / ml ((3 cc), and 100 IU (10cc). It is also important to note that each group was divided into two subgroups of 10 cows. This sub-classification was done based on the sex of newborn calves. Using Nonparametric Correlations statistical methods, collected data were calculated and analyzed. The results showed that the time for disposal of fetal membranes was significantly reduced in postpartum heifers that received prostaglandin in comparison with the heifers that were injected by oxytocin. Also, the time for placenta disposal has decreased in heifers that have given birth to male calves and received postpartum prostaglandin rather than heifers that have given birth to female calves and received oxytocin injection after delivery.
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