نتایج جستجو برای: dairy calf pneumonia
تعداد نتایج: 127628 فیلتر نتایج به سال:
BACKGROUND Mortality and morbidity are hardly documented in the white veal industry, despite high levels of antimicrobial drug use and resistance. The objective of the present study was to determine the causes and epidemiology of morbidity and mortality in dairy, beef and crossbred white veal production. A total of 5853 calves, housed in 15 production cohorts, were followed during one productio...
Contentious issues in calf rearing include milk feeding level and single versus group housing. The current study was performed on a high-producing 170 Holstein cow dairy farm to investigate the impact of nutrition and housing on disease incidence. Calves (n=100) were allocated in birth order to one of two commonly used feeding strategies. Group A calves were group housed from birth and fed ad l...
abstract background: sp-a and sp-d are hydrophilic proteins which regulate the inflammatory response of the lung. pasteurella multocida is one of the most common bacteria isolated from calves suffering from shipping fever pneumonia, one of the most problems in dairy herds. objective: evaluation of surfactant content may provide a valuable diagnostic tool for detection of calf pneumonia due to p...
black leg has been reported in a variety of animals, but is ofthe most importance in cattle and sheep. a20 days old holsteindairy calf was examined because of anorexia and lameness from2 days ago. the calf was depressed, tachypneic, tachycardic, andhad a body temperature of 38.5ºc. both hind limbs proximal tothe tarsal joint were markedly swollen, firm and painful. nocrepitation was noted on pa...
Accepted: 27/12/2015 Abstract The present investigation was conducted on sixty commercial dairy farms in Guntur and Warangal districts of Andhra Pradesh by selecting twenty dairy farmers each from small, medium and large sized dairy farms to study the calf mortality and managemental practices that are being followed by the farmers. The results indicated that high incidence of calf mortality was...
To examine the dissemination of Shiga-toxigenic Escherichia coli (STEC) within cattle groups, dairy calves on two farms utilizing different calf-rearing practices were exposed to a traceable STEC strain. Test strain dissemination differed significantly between farms, with a higher prevalence being associated with group penning. Pen floors and calf hides may be the main environmental mechanisms ...
Calfhood diseases have a major impact on the economic viability of cattle operations. This is the first in a three part review series on calf health from birth to weaning, focusing on preventive measures. The review considers both pre- and periparturient management factors influencing calf health, colostrum management in beef and dairy calves and further nutrition and weaning in dairy calves.
Dairy calf death rates from birth to weaning approximate 8 to 10% in the US. Stillbirths on dairies, measured as calves dead at delivery or within the first 24 to 48 hours after delivery, are less closely monitored, but are estimated between 6 and 12%. Numerous factors influence calf health and survival, but the key contributors to calf morbidity and mortality can be managed to greatly reduce t...
Sischo, W.M., Hird, D.W., Gardner, I.A., Utterback, W.W., Christiansen, K.H., Carpenter, T.E., Danaye-Elmi, C. and Heron, B.R., 1990. Economics of disease occurrence and prevention on California dairy farms: a report and evaluation of data collected for the National Animal Health Monitoring System, 1986-1987. Prey. Vet. Med., 8: 141-156. A stratified random sample of 43 dairy herds in Californi...
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