پديد آورنده :
ميرزائي ،مهدي
عنوان :
بررسي آثار تغذيه مكمل كروم -متيونين بر عملكرد و پارامتر هاي خوني گاوهاي هلشتاين تحت تنش حرارتي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
پانزده ،171،[II]ص،مصور ،جدول ،نمودار
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
غلامرضا قرباني ،محمد خوروش
استاد مشاور :
حميد رضا رحماني
توصيفگر ها :
سوماتوتروپين گاوي
تاريخ نمايه سازي :
18/1/87
استاد داور :
مسعود عليخاني ، محمد فضيلتي
تاريخ ورود اطلاعات :
1396/05/08
چكيده فارسي :
به فارسي و انگليسي :قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Abstract The objectives of this research were to investigate the effects of chromium Cr on the performance dry matter intake DMI digestibility blood factors and some physiological responses of heat stressed cows in early lactation Fifteen Holstein cows 38 12 days in milk were arranged as randomized complete block design with three dietary chromium treatments of C control no supplemental Cr M 0 05 and H 0 10 mg Cr kg BW0 75 as chromium methionine This experiment lasted for 65 days The average of maximum THI in this experiment was 77 7 units Supplementation with chromium in M p 0 05 and H p 0 15 groups increased DMI in comparison with control group Milk yield fat corrected milk FCM milk components concentrations and yields were not affected by treatments but milk protein p 0 09 and total solids p 0 11 percentages were higher for M group than cows were not supplemented Cr Glucose glucagon IGF 1 total protein globulin BUN BHBA TG cortisol progesterone concentrations and cortisol progesterone ratio were not affected by chromium supplementation Supplementation with chromium M and H groups decreased insulin concentration in comparison with control group p 0 01 and p 0 05 respectively Supplementation with 0 05 mg kgBW0 75 increased HDL concentration p 0 04 and decreased insulin glucagon ratio p 0 05 in comparison with control group significantly It is possible that metabolical and heat stresses increased Cr requirement and 0 05 mg kgBW0 75 has supplied this requirement These observations suggest that there might have been Cr toxicity at our highest dose although the toxic level of Cr for ruminants is unknown pdfMachine A pdf writer that produces quality PDF files with ease Produce quality PDF files in seconds and preserve the integrity of your original documents Compatible across nearly all Windows platforms simply open the document you want to convert click print select the Broadgun pdfMachine printer and that s it Get yours now
استاد راهنما :
غلامرضا قرباني ،محمد خوروش
استاد مشاور :
حميد رضا رحماني
استاد داور :
مسعود عليخاني ، محمد فضيلتي
