منابع مشابه
An Update on Hypocalcemia on Dairy Farms
The start of each new lactation challenges a dairy cow’s ability to maintain normal blood calcium concentrations. Milk (including colostrum) is very rich in calcium, and cows must quickly shift their priorities to adjust for this sudden calcium outflow. Average blood calcium concentrations noticeably decline in second or greater lactation cows around calving, with the lowest concentrations occu...
متن کاملA Survey on Drinking Water Contamination to Indicator Bacteria in Dairy Farms of Mashhad Suburb
BACKGROUND: Microbial quality of drinking water is very important in animal health. OBJECTIVES: The present survey was conducted to evaluate the microbial quality of cows' drinking water in dairy farms in Mashhad suburb, Iran, to find out defects in this field. METHODS: Water samples were taken from 30 farms and 4 sites including: Water tanks, inlet and outlet of bovine drinking troughs and c...
متن کاملFactors Affecting Manure Output on Dairy Farms
The amount of manure produced on dairy farms can affect the financial bottom line. Labor, equipment, and facilities are needed to move and store manure, all of which have a cost. Increased output of manure can represent losses in potentially digestible nutrients (increased feed costs). Lastly, the environmental impact of dairy farming is strongly related with the quantity and composition of man...
متن کاملNutrient Management Behavior on Wisconsin Dairy Farms
Nutrient management plans for livestock operations should account for rates and timing of manure application to cropland, as well as how manure is integrated with other nutrient sources. Little is known, however, about actual nutrient management behavior of farmers, and what changes may be needed for farmers to adhere to nutrient management regulations. Detailed records were kept on fertilizer,...
متن کاملWhole-farm Phosphorus Management on Dairy Farms
Most dairy farms in Wisconsin continue to follow a fairly generalized formula of how to produce milk. Cows and replacement heifers are fed primarily homegrown feed from crop rotations comprising alfalfa (Medicago sativa L.), corn (Zea mays L.), oats (Avena spp.) and soybean (Glycine max L. Merr.). Protein and mineral supplements are purchased to compliment dairy diets. However, the dairy indust...
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ژورنال
عنوان ژورنال: Public Health
سال: 1908
ISSN: 0033-3506
DOI: 10.1016/s0033-3506(08)80258-2