پديد آورنده :
محمدي، فاضل
عنوان :
اثر تغذيه علوفه يونجه (به صورت سرك يونجه يا TMR) بر فعاليت جويدن، الگوي مصرف خوراك، نشخوار، گوارش پذيري مواد مغذي و عملكرد توليدي در گاوهاي شيرده هلشتاين
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
يازده،89ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
غلامرضا قرباني، محمد خوروش
استاد مشاور :
علي صادقي سفيدمزگي
توصيفگر ها :
يونجه بلند , اندازه ذرات علوفه , جيره كاملا مخلوط
استاد داور :
احمدرياسي،نفيسه سلطاني زاده
تاريخ ورود اطلاعات :
1395/08/03
چكيده فارسي :
j نتايج و بحث 25 3 1 خصوصيات جيره هاي آزمايشي و توزيع اندازه ذرات آنها 35 3 2 مصرف مواد مغذي 55 3 3 توليد شير و تركيبات آن 75 3 4 وزن بدن نمره وضعيت بدني ضخامت اليه چربي پشت قابليت هضم و بازده خوراك 16 3 5 رفتار انتخاب گري و مصرف ذرات باقيمانده بر روي هر الك 36 3 6 رفتار جويدن 66 3 7 الگوي مصرف خوراك و نشخوار 07 3 8 فراسنجه هاي تخمير شكمبه 27 3 9 هزينه هاي خوراك و درآمد شير 57 فصل چهارم 77 نتيجه گيري و پيشنهادات 77 4 1 نتيجه گيري كلي 77 4 2 پيشنهادات 87 منابع 97 چكيده انگليسي 39 ده
چكيده انگليسي :
91 Effect of feeding alfalfa Hay long Hay and TMR on chewing activity patternof feeding rumination nutrition digestibility and performance of Holstein dairycows Fazel mohammadi@ag iut ac ir Department of Animal Sciences College of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor G R Ghorbani Ghorbani@cc iut ac ir And M Khorvash khorvash@cc iut ac irAbstractThe objective of this study was to evaluate the effects of feeding long alfalfa hay as top dress ormixed with TMR on performance of Holstein dairy cows in mid lactation Eight primiparous DIM 105 3 13 2 BW 667 7 44 3 kg and producing 45 3 2 7 kg d milk Holstein cowswere used in a 4 4 Latin square design with 21 days periods Each period consisted of 14 d ofadaptation followed by 7 d of data collection Treatments DM basis were 1 total mixed ration control 2 feeding 5 long alfalfa hay to cow an hour before feeding TMR 3 feeding 10 long alfalfa hay to cow an hour before feeding TMR and 4 feeding 15 long alfalfa hay to cowan hour before feeding TMR Top dress increased the proportion of the particles retained on thetop sieve of the PSPS 19 mm and the second sieve 8 19 mm but decreased the proportion ofthe particles retained on the third sieve 1 18 8 mm p 0 01 Alos had a significant effect onpan sieve p 0 05 Treatments had no significant effect on chewing activities and rumen fluidpH Milk fat percentage affected by treatments linearly p 0 05 feeding alfalfa hay as top dresshad no significant effect on selection index in 19 8 1 18 and pan sieves Acetate propionate andbutyrate concentrations were not affected by treatments Dry matter intake decreased p 0 01 milk production in treatment 2 was maximum and tended to be significant linearly p 0 07 Also milk energy adjusted milk solid ingredient adjusted and milk fat adjusted were affected bytreatments p 0 05 amount of milk fat adjusted for 3 5 was maximum in treatment controland decreased by increasing top dress p 0 01 MUN not changed but milk protein p 0 08 and rumen fluid urea nitrogen tended to be significant linearly p 0 07 Income from milkselling was affected by treatments significant p 0 01 These results of this study shows thatfeeding 5 alfalfa hay as top dress can increase milk production and benefit by decreases DMI Keywords top dress long alfalfa hay particle size forage total mixed ration dairy cowperformance
استاد راهنما :
غلامرضا قرباني، محمد خوروش
استاد مشاور :
علي صادقي سفيدمزگي
استاد داور :
احمدرياسي،نفيسه سلطاني زاده
