This study was conducted to evaluate the effect of phenylbutazone injection on serumic levels of thyroid hormones in the Arabian horse. Twelve Arabian horses were allocated to two groups of control and treatment each consisting of six animals. In the treatment group, More
This study was conducted to evaluate the effect of phenylbutazone injection on serumic levels of thyroid hormones in the Arabian horse. Twelve Arabian horses were allocated to two groups of control and treatment each consisting of six animals. In the treatment group, 3 mg/kg phenylbutazone was injected intravenously for 6 days while in the control group equal values of 0.9% NaCl solution was used for the injection. Blood samples of all animals were collected from the jugular vein at days 0(before injection), 1, 2, 3, 4, 5 and 6, their sera separated by centrifuging and the levels of T3 and T4 were measured using the ELISA technique. There was a significant difference (P
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This study was conducted evaluate the effect of vitamin E and Selenium injection on serumic levels of thyroid hormones in the Arabian horse. Twelve Arabian stallions of approximately equal age were selected and based on their age (4 and 5 years old), More
This study was conducted evaluate the effect of vitamin E and Selenium injection on serumic levels of thyroid hormones in the Arabian horse. Twelve Arabian stallions of approximately equal age were selected and based on their age (4 and 5 years old), allocated to tow groups each consisting of six animals. In each group, three of the six horses were injected by vitamins E and selenium at a dose rate of 1cc/30 kg intramuscularly every tow days and the other three animals which were chosen as the controls were similarly injected by normal saline solution. Two days alter each injection; blood samples of the horses in each group were collected using venoject from the jugular vein. After separating the blood serum by centrifuging, the levels of T3 and T4 were measured using the ELISA technique. Following the first injection, the serumic levels of thyroid hormones demonstrated a significant increase in comparison with the controls (p<0.05) while after the second injection, the serumic levels of T3 and T4 had decreased to normal values similar to the control groups. However, following the third injection the decreased in T3 and T4 levels was clearly evident and statistically significant (p<0.05). According to the results of the present study, the injection of vitamin E and selenium for more than twice leads to decrease in the seumic levels of T3 and T4 hormones of the horse and this is coupled with reduction of the basic body metabolism which is not beneficial for the animal.
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Ketosis, with ethologically energy deficiency, is one of the commonest metabolic diseases of dairy cattle. Assessment of some serum hormonal and metabolic status can be beneficent in prediction and diagnosis of subclinical ketosis. This study is performed for evaluation More
Ketosis, with ethologically energy deficiency, is one of the commonest metabolic diseases of dairy cattle. Assessment of some serum hormonal and metabolic status can be beneficent in prediction and diagnosis of subclinical ketosis. This study is performed for evaluation and comparison of thyroid hormones, insulin and magnesium of subclinical ketosis and healthy cows. During 60 days in milk (DIM) serum Beta hydroxy butyric acid (BHBA) and glucose levels of 200 dairy cattle have been measured. Based on 1.4 mmol/l of BHBA as a cut of point experimented animals separated to subclinical and healthy groups. Mean values of serum T3 and T4 of affected cows were significantly higher than non-affected (p<0.05). On the other hand, magnesium and insulin level of subclinically cases were significantly lower than control group (p<0.01 and p<0.05 respectively). There was significant correlation coefficient between BHBA and insulin levels of ketosis cows (p<0.05, r=0.37). In conclusion, increasing levels of thyroid hormones and decreasing magnesium and insulin of subclinically affected cattle could be used for diagnosis and prediction of this kind of ketosis at the herd level.
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به ­منظور شناخت ارتباط عوامل فیزیولوژیک و متابولیک با بروز آسیت در جوجه‌های گوشتی آرین و همچنین بررسی اثر ترکیبات مختلف بنتونیت بر این عوامل، تعداد 200 قطعه جوجه آرین هم جنس (نر) و هم وزن در یک طرح کاملاً تصادفی مورد آزمایش قرار گرفتند. جوجه‌ها در 7 روزگی بر اساس جی More
به ­منظور شناخت ارتباط عوامل فیزیولوژیک و متابولیک با بروز آسیت در جوجه‌های گوشتی آرین و همچنین بررسی اثر ترکیبات مختلف بنتونیت بر این عوامل، تعداد 200 قطعه جوجه آرین هم جنس (نر) و هم وزن در یک طرح کاملاً تصادفی مورد آزمایش قرار گرفتند. جوجه‌ها در 7 روزگی بر اساس جیره غذایی به 5 گروه آزمایشی تقسیم شدند: 1) شاهد (بدون بنتونیت)؛ 2) جیره حاوی بنتونیت سدیمی فرآوری شده با سولفات مس (1 درصد بر اساس ماده خشک)؛ 3) جیره حاوی بنتونیت سدیمی فرآوری نشده (1 درصد بر اساس ماده خشک)؛ 4) جیره حاوی بنتونیت کلسیمی فرآوری شده با سولفات مس (1 درصد بر اساس ماده خشک) و 5) جیره حاوی بنتونیت کلسیمی فرآوری نشده (1 درصد بر اساس ماده خشک). 40 قطعه جوجه در هر گروه آزمایشی به 4 تکرار 10 قطعه‌ای تقسیم شدند. (نسبت RV/TV) به عنوان مهمترین شاخص آسیت در سن 35 روزگی در گروه تغذیه شده با بنتونیت سدیمی سولفاته کمترین (24/0) بود و نسبت به گروه شاهد (29/0) تفاوت معنی داری داشت (05/0P<). جیره دارای بنتونیت سدیمی سولفاته غلظت هورمون‌های T3 و T4 سرم خون نسبت به سایر جیره‌ها افزایش داد (05/0P<). درصد تلفات در گروه تغذیه شده با بنتونیت سدیمی سولفاته نسبت به گروه شاهد تمایل به کاهش داشت (10/0P<). افزودن بنتونیت به جیره به ویژه از نوع سولفاته سبب کاهش شاخص آسیت و بهبود بهبود صفات مرتبط با آن شد. به طورکلی افزودن بنتونیت به جیره جوجه‌های گوشتی، اثرات مثبتی بر شاخص‌های متابولیکی و فیزیولوژیکی مرتبط با آسیت داشت که احتمالاً این اثرات را می‌توان به جذب بهتر مواد مغذی در روده نسبت داد.
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