کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2454028 | 1110366 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CASE STUDY: Effects of a direct-fed microbial on finishing beef cattle performance, carcass characteristics, and in vitro fermentation
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
Two experiments were conducted to evaluate the effects of BeefPro (C&E Agri Products, Baldwin, ND), a microencapsulated direct-fed microbial containing lactate-producing bacteria and digestive enzymes, on performance and carcass characteristics of feedlot cattle and on in vitro fermentation of high-concentrate substrates. In the performance study, 96 steers (average BW = 321 kg) were allotted randomly to 2 treatments: (1) control or (2) 200 mg/d per steer of BeefPro. Final BW did not differ between treatments (P = 0.19); however, steers fed BeefPro tended (P = 0.10) to have a greater carcass-adjusted final BW. Steers fed BeefPro tended (P < 0.07) to have a greater live-weight-basis ADG for the overall feeding period, and carcass-adjusted ADG was greater (P = 0.037) for cattle fed BeefPro. Dry matter intake was greater by steers fed BeefPro (P = 0.04), but G:F (P > 0.55) did not differ between treatments on a live-weight or carcass-adjusted basis. In the in vitro study, the same treatments as in the performance study were used in high-concentrate substrates to determine IVDMD and gas production kinetics. Neither gas production kinetics nor IVDMD was altered by BeefPro at 21.2 mg/kg of DM compared with control (P ⥠0.10). Although in vitro data did not provide evidence of alterations in ruminal fermentation by including BeefPro in substrates, feedlot performance data suggest that BeefPro, when fed daily at a dose of 200 mg per steer, can have positive effects on DMI and ADG of finishing beef cattle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 27, Issue 3, June 2011, Pages 276-281
Journal: The Professional Animal Scientist - Volume 27, Issue 3, June 2011, Pages 276-281
نویسندگان
C.H. PAS, N. DiLorenzo, M.J. Quinn, D.R. Smith, M.L. May, M.L. PAS,