منابع مشابه
The thermal work limit is a simple reliable heat index for the protection of workers in thermally stressful environments.
BACKGROUND Workers in many industries are exposed to thermally stressful work environments. Protection of the health of workers without unnecessarily compromising productivity requires the adoption of a heat index that is both reliable and easy to use. OBJECTIVES To evaluate the Thermal Work Limit (TWL), in a controlled environment and under field conditions, against these criteria. METHODS...
متن کاملLimit Feeding Beef Cattle
(allowed to eat according to appetite). Generally, this allows for maximum performance because energy consumed above the maintenance requirement is available for gain. However, recent work suggests that limit-fed animals may have better feed efficiency. This has economic importance in that changes in feed efficiency have three times the impact on cost of gain as an equal change in rate of gain....
متن کاملFarm work practices and farm injuries in Colorado.
STUDY OBJECTIVE s: To describe the farm work patterns and the relationship between hours spent working on specific farm tasks and task specific work related injuries among women and men. DESIGN A cross sectional survey of farm operators and their spouses in an eight county area of Colorado was conducted. Personal interviews were conducted between 1993 and 1997. Interviews took between 45 minu...
متن کاملThermal Stress in Dairy Cattle
Crosses of temperate cattle reared in tropical ambience lapse in heat tolerance, fertility and disease resistance. However, cross breeding zebu with high yielding exotic cattle seems necessary to meet the need for enhanced composite milk production per unit in view of food security. Thermal stress is considered as the main factor responsible for reduction of milk yield in tropical climate. Any ...
متن کاملPrevalence of bovine tuberculosis in a dairy cattle farm and a research farm in Ghana.
The aim of the study was to estimate the prevalence of bovine tuberculosis (BTB) and to identify the mycobacterial species causing BTB in a dairy farm and research farm. Six hundred and eighty-five cattle were screened for BTB by using the Comparative intradermal tuberculin test (CTT). Positive reactors were slaughtered and carcasses were taken for isolation of mycobacterial species. This was f...
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ژورنال
عنوان ژورنال: Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
سال: 2021
ISSN: 1211-8516,2464-8310
DOI: 10.11118/actaun.2021.016