Bovine respiratory disease in feedlot cattle: Environmental, genetic, and economic factors
نویسندگان
چکیده
منابع مشابه
Bovine respiratory disease in feedlot cattle: environmental, genetic, and economic factors.
The objective of this study was to characterize genetic, environmental, and economic factors related to the incidence of bovine respiratory disease (BRD) in feedlot calves. Records from 18,112 calves representing 9 breeds (Angus, Braunvieh, Charolais, Gelbvieh, Hereford, Limousin, Pinzgauer, Red Poll, and Simmental) and 3 composite types (MARC I, MARC II, and MARC III) over a 15-yr period (1987...
متن کاملBovine respiratory disease in feedlot cattle: phenotypic, environmental, and genetic correlations with growth, carcass, and longissimus muscle palatability traits.
Bovine respiratory disease (BRD) is the most costly feedlot disease in the United States. Selection for disease resistance is one of several possible interventions to prevent or reduce the economic loss associated with animal disease and to improve animal welfare. Undesirable genetic relationships, however, may exist between production and disease resistance traits. The objectives of this study...
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The prevalence of bovine respiratory disease complex (BRDC) has remained unchanged for decades despite efforts to suppress the disease through prevention programs aimed at vaccination and metaphylaxis. An additional approach that focuses on host response to infection by the pathogens responsible for BRDC, through the selection of animals that are less susceptible to the disease, has been undert...
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The cattle market has set year-over-year record high prices since 2009. The increasing value of cattle has substantially increased the financial risk of feeding cattle, and has commensurately increased the economic losses from disease. As cattle feeding profitability continues to be challenged by the low margin between selling prices and operating costs, all facets of cattle feeding are being e...
متن کاملEnvironmental factors influencing heat stress in feedlot cattle.
Data from 3 summer feedlot studies were utilized to determine the environmental factors that influence heat stress in cattle and also to determine wind speed (WSPD; m.s(-1)) and solar radiation (RAD; W.m(-2)) adjustments to the temperature-humidity index (THI). Visual assessments of heat stress, based on panting scores (0 = no panting to 4 = severe panting), were collected from 1400 to 1700. Me...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2006
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas.2006-046