کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2453857 | 1110354 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Method of feeding a liquid-protein supplement with low- to medium-quality hay affects hay waste and cow performance
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
Nonlactating Angus cross beef cows were used in 2 studies to evaluate method of supplementing a liquid protein with low- to medium-quality bermudagrass hay on waste and cow performance. In study 1, 191 cows were stratified by BW, BCS, and age and assigned to 1 of 6 pastures with 3 treatments for 77 d. Treatments included a liquid protein provided free choice (TNK), poured into bales at 10% of bale weight (POR), or 1.25 kg/cow of dried distillers grains fed daily. In study 2, 180 cows were stratified by adjusted BW, age, and calving date and assigned to 3 BW blocks with 3 treatments per block for 52 d. Treatments included a liquid protein provided free choice (TNK) or poured into bales at 10% (POR10) or 15% (POR15) of bale weight. Hay DMI, waste, and cow performance (study 2 only) were measured. Daily DMI was not affected by treatment in Studies 1 or 2. In study 1, the POR treatment tended to have less (P = 0.084) hay waste compared with the TNK treatment. In study 2, amount and percentage of hay waste from the POR15 was lower (P < 0.01) compared with the TNK treatment. A treatment by BW block interaction occurred (P < 0.04) and positive differences in BW gain and ADG were observed among treatments (P < 0.01) within BW block. We conclude that treating low- to medium-quality hay with a liquid-protein supplement reduced hay waste but did not increase DMI.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 29, Issue 5, October 2013, Pages 552-558
Journal: The Professional Animal Scientist - Volume 29, Issue 5, October 2013, Pages 552-558
نویسندگان
R.S. Walker, D. LaMay, J.R. Davis, C.A. Bandyk,