کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8973730 | 1552510 | 2005 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of whole-crop barley and oat silages on the performance of mature suckler cows and their progeny in outdoor winter feeding
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کلمات کلیدی
digestible organic matter in dry matterLWGAIAOMDNDFAATS.E.M.S.D. - SD.Live weight gain - افزایش وزن زندهstandard deviation - انحراف معیارMetabolizable energy - انرژی متابولیزه شدهFeeding - تغذیهReproduction - تولید مثل یا زادآوریAcid insoluble ash - خاکستر نامحلول اسیدstandard error of means - خطای استاندارد معنیBCs - روند BCsFemale - زنGrass silage - سیلاکس چمنMilk - شیرPhosphorus - فسفرneutral detergent fibre - فیبر مواد شوینده خنثیDOM - قضاوتorganic matter - ماده آلیdigestible organic matter - ماده آلی قابل هضمdry matter - ماده خشکMale - نرBody condition score - نمره وضعیت بدنNitrogen - نیتروژنIn vitro organic matter digestibility - هضم ماده آلی درون in vitrointernational unit - واحد بین المللیlivestock unit - واحد دامLive weight - وزن زندهBody condition - وضعیت بدنPotassium - پتاسیمcrude protein - پروتئین خامGrazing - چِراBeef - گوشت گاو
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ME values of G, B and O evaluated by the in vivo method were 11.2, 10.5 and 9.5Â MJ/kg DM, respectively. The DM intake on diets G, B and O averaged 9.2, 10.5 and 10.3Â kg which resulted in ME intakes of 102, 109 and 97Â MJÂ ME/d, respectively. The type of roughage affected the in vivo apparent protein digestibility co-efficients which for G, B and O were 0.841, 0.698 and 0.498, respectively (G versus B, PÂ <Â 0.05; G versus O and B versus O, PÂ <Â 0.01). The initial cow body condition score (BCS) averaged 3.2 (S.D. 0.23). Pre-grazing the change of BCS and the live weight gain (LWG) for G, B and O cows was on average 0.23, 0.09 and â0.39 (G versus O and B versus O, PÂ <Â 0.001) and â20, â9 and â56Â kg (G versus O, PÂ <Â 0.05; B versus O, PÂ <Â 0.01), respectively. All calves were born before the grazing season and milk and grass were the sole feeds at pasture. The pre-weaning calf LWG was not affected by the diets averaging 1357Â g/d. The daily milk yield on diets G, B and O averaged 11.4, 10.3 and 9.5Â kg (G versus O, PÂ <Â 0.05), respectively. Forty-two out of 48 cows entered the mating period of which all were observed to be pregnant. The interval from calving to conception averaged 89 days. B and O proved to be suitable winter feeds for mature suckler cows in cold winter circumstances. Especially O had a lower energy and protein content than G but fulfilled the energy and protein demands of mature, pregnant beef cows in good body condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Feed Science and Technology - Volume 121, Issues 3â4, 24 June 2005, Pages 227-242
Journal: Animal Feed Science and Technology - Volume 121, Issues 3â4, 24 June 2005, Pages 227-242
نویسندگان
M. Manninen, P. Virkajärvi, L. Jauhiainen,