کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8503698 1554278 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of fodder production systems for organic dairy farms
ترجمه فارسی عنوان
ارزیابی سیستم های تولید علوفه برای مزارع لبنی آلی
کلمات کلیدی
لبنیات، علوفه، ارگانیک، جو غوطه ور
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
This study evaluated the feasibility and challenges of implementing sprouted fodder on organic dairy farms. In study 1, 5 grains (barley, oats, wheat, rye, and triticale) were sprouted for 7 d and analyzed for yield and nutritional content. In study 2, lactating cows were fed a TMR during winter and supplemented with either no fodder or 1.4 kg (DM) of sprouted barley fodder. In study 3, 3 organic dairies that fed sprouted barley fodder were monitored monthly for 12 mo to collect data on feed nutritional analysis, milk production and composition, and management. Data from studies 1 and 2 were analyzed as separate replicated complete block designs, and study 3 was a case study. Barley and oats had the greatest (P < 0.05) fresh weight in study 1, oats had the greatest (P < 0.05) DM yield, and barley had the least (P < 0.05) mold score. In study 2, milk production, milk fat, BW, and BCS were not affected by supplemental fodder. Cows fed fodder had lesser (P < 0.05) milk protein production but greater (P < 0.05) milk urea N. Income over feed costs favored not feeding fodder except when cracked corn prices increased by 50% over those used in the study. In study 3, labor, cost of production, lack of milk response, barley supply, and mold issues resulted in 2 of the farms discontinuing fodder. Fodder increased milk production slightly on the third farm, probably due to decreased forage quality. Fodder may provide some benefits on small-scale operations, farms with high land values where tillable acreage can produce high-value crops, or for producers experiencing severe, extended drought. Additionally, farms that have an excess of labor may benefit with a sprouted fodder system. However, in many situations, growing high-quality forage would be more economical.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 34, Issue 1, February 2018, Pages 75-83
نویسندگان
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