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An outbreak of acute bovine mastitis caused by Klebsiella pneumoniae in a dairy herd
Silva, N.;Costa, G.M.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001, DOI: 10.1590/S0102-09352001000400001
Abstract: an outbreak of coliform mastitis is described in a dairy herd from the state of rio de janeiro, brazil. during a four-month period 14 fatal cases of klebsiella pneumoniae-related mastitis were observed in a herd of 104 lactating cows. the symptoms included peracute enterotoxemia in which the cows died 6 to 12 h after the detection of mastitis by cmt. staphylococcus aureus andstreptococcus agalactiae streptococcus agalactiae were also isolated although could not be associated with cases of acute fatal mastitis. milking practices were also evaluated. the milking machine was being used correctly and adequate precautions for hygiene and pre-milking and post-milking teat dipping were used. the organism was sensitive to gentamicin. therapy for acute toxic mastitis required early action for the treatment of infections, involving corticosteroids and fluid therapy. the use of a klebsiella vaccine produced from the microorganisms isolated from the herd, associated with hygiene measures, resulted in the control of the outbreak.
An outbreak of acute bovine mastitis caused by Klebsiella pneumoniae in a dairy herd  [cached]
Silva N.,Costa G.M.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001,
Abstract: An outbreak of coliform mastitis is described in a dairy herd from the State of Rio de Janeiro, Brazil. During a four-month period 14 fatal cases of Klebsiella pneumoniae-related mastitis were observed in a herd of 104 lactating cows. The symptoms included peracute enterotoxemia in which the cows died 6 to 12 h after the detection of mastitis by CMT. Staphylococcus aureus and Streptococcus agalactiae Streptococcus agalactiae were also isolated although could not be associated with cases of acute fatal mastitis. Milking practices were also evaluated. The milking machine was being used correctly and adequate precautions for hygiene and pre-milking and post-milking teat dipping were used. The organism was sensitive to gentamicin. Therapy for acute toxic mastitis required early action for the treatment of infections, involving corticosteroids and fluid therapy. The use of a Klebsiella vaccine produced from the microorganisms isolated from the herd, associated with hygiene measures, resulted in the control of the outbreak.
An outbreak of winter dysentery caused by bovine coronavirus in a high-production dairy cattle herd from a tropical country
Takiuchi, Elisabete;Barry, Aline Fernandes;Alfieri, Alice Fernandes;Filippsen, Patrícia;Alfieri, Amauri Alcindo;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000700008
Abstract: bovine coronavirus (bcov) is a known cause of winter dysentery (wd) in adult cattle. the morbidity of the disease is high, that results in a significant decrease in milk production and consequently, economic losses. in the present study, we report on a classical outbreak of wd that affected a high-production holstein dairy herd raised in a tropical country. the lactating batch included 154 cows, and 138 (90%) presented diarrhea in a short (nine days) period of time. three (2%) cows died. the other batches of animals did not become ill. the evolution of the disease in the herd, including the clinical signs and epidemiological features, strongly suggested a wd case. semi-nested pcr and rflp confirmed that bcov was the cause of the infection. samples tested negative for all other enteric pathogens. this case report highlights the importance of bcov in wd even in tropical countries such as brazil.
Clinical aspects of an outbreak of papillomatous digital dermatitis in a dairy cattle herd : case report  [cached]
I. Yeruham,S. Perl
Journal of the South African Veterinary Association , 2012, DOI: 10.4102/jsava.v69i3.830
Abstract: Digital skin lesions and lameness of several weeks duration, with a morbidity rate of 28.3 %, was reported in a group of 60 Holstein-Israeli dairy cows in various stages of lactation. A clinical survey was performed to monitor recovery and to confirm eradication of bovine papillomatous digital dermatitis in the herd. The combined effects of intensive individual treatment of the 4 lame cattle with procaine penicillin and metronidazole, and subjecting all animals in the herd to a foot bath with a solution composed of formaldehyde and sodium hydroxide twice a week for 12 weeks, were found to achieve a dramatic positive response in all affected cows in the herd. During a 1-year follow-up period no recurrence and/or new cases have been diagnosed.
AN OUTBREAK OF FOOT AND MOUTH DISEASE IN A HERD OF CROSSBRED CATTLE  [cached]
Rashid Ahmad, Javaid Iqbal and Ghu1am Akbar1
Pakistan Veterinary Journal , 2002,
Abstract: During the months of December 200 I and January 2002, an outbreak of Foot and Mouth disease (Foot and Mouth Disease type-A virus) was recorded in a crossbred dairy herd at Livestock Experiment Station, Qadirabad. The sick animals showed only the oral lesions except one, which developed foot lesions after 10 days. The overall morbidity rate was 52.13% while the same was recorded as 7.95, 14.06, 97.36, 80.14, 62.68, 62.68, 62.50, and 7.14% in milking cows, dry cows, male young stock, female young stock, male sucklers, female sucklers and bullocks, respectively. Recovery was noticed on seventh day from the onset of out break. No mortality was recorded.
Botulismo em bovinos leiteiros no Sul de Minas Gerais, Brasil
Costa, Geraldo Márcio da;Salvador, Sandro César;Pereira, Marcos Neves;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000700045
Abstract: an outbreak of bovine botulism in a dairy herd caused by ingestion of contaminated maize, in southern minas gerais, brazil is described. the herd was composed by 148 lactating cows of high milk production fed with diet based on maize ensilage and concentrate in a free stall system. thirty eight cows were affected, with 100% of fatality rate. samples from intestine, rumen and liver of necropsied cattle and drinking water and maize were submitted to the mouse bioassay and soroneutralization tests for detection of clostridium botulinum toxins. types c and d toxins were detected in samples from intestinal and rumen contents and maize. the reporter of an outbreak of botulism in cattle associated with an unusual source of toxin, shows that stocked maize in inadequate conditions is a factor of risk for the occurrence of the botulism in dairy cattle.
Sensitivity of Staphylococcus aureus Isolated from Subclinical Bovine Mastitis to Co-Amoxiclav in Tabriz Dairy Herd in 2010
S. Mosaferi,T. Jalili,Z. Ostadi,M. Khakpour,H. Bodaghi
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2012.165.169
Abstract: Mastitis is an inflammation of the parenchyma of mammary gland regardless of the causes. Mastitis is characterized by a range of physical and chemical changes in the glandular tissue. The most important changes in milk include discoloration, the present clots and the present of large number of leucocytes. There is a swelling, heat, pain and edema in mammary gland in many clinical causes. Coagulase positive S. aurousis a major pathogen of the bovine mammary gland and a common cause of contagious mastitis in cattle. The aim of this study was the evaluation of outbreaks of Staphylococcus aurous mastitisand its sensitivity to Co-amoxiclavein Tabriz dairy herd. This study is conducted in ten dairy herd of Tabriz on about 1,000 cows. After doing CMT and identifying of infected cows, the milk samples obtained from infected quarters and transport to microbiological laboratories. After microbial culture of milk samples and isolated of S. aurous, antimicrobial sensitivity test with disk diffusion method perform by co-amoxiclav, penicillin, oxytetracyclin, co-trimoxazole, lincomycin and cefquinome. This study defined that the outbreak of subclinical coagolase positive staphylococcus mastitis in Tabriz dairy herd was 4.43% (3.35% S. aureus and 1.08% S. intermedicus). The antimicrobial sensitivity test shown that 41.17% of Staphylococcus aureus isolated from bovine mastitis in Tabriz dairy herd were susceptible to co-amoxiclav, 94.1% to cefquinome, 85.29 to sulfonamides (Co-trimoxazole), 32.35 lincomycin, 14.7% to oxytetracyclin and 5.88% to penicillin. Results of this study defined that Co-amoxiclav has a moderate effect on Staphylococcus aureus isolated from subclinical bovine mastitis in Tabriz dairy herd. It seems that cefquinome and sulfonamides has a great effect on Staphylococcus aureus isolated from subclinical bovine mastitis at in vivo.
Direct and indirect effects of Johne's disease on farm and animal productivity in an Irish dairy herd
EKB Richardson, SJ More
Irish Veterinary Journal , 2009, DOI: 10.1186/2046-0481-62-8-526
Abstract: Johne's disease (JD), also called paratuberculosis, is caused by infection with the organism Mycobacterium avium spp. paratuberculosis (MAP), leading to chronic diarrhoea and ill thrift in adult cattle [6]. Typically, animals are infected as calves, but do not present with clinical signs until much later in life. Studies on JD are difficult due to long incubation period, complex exposure factors and poor test sensitivity associated with this disease [7,15,10]. Johne's disease is considered to adversely affect farm performance and as a result, economic profit. Currently, little data are available about the impact of JD on farm production in Ireland. Based on international studies, JD infection is associated with reduced milk production [15], increased involuntary culling rates [19] and increased calving interval and infertility [14,20]. Concern has been raised over potential links between Johne's disease in cattle and Crohn's disease in humans, which may lead to international barriers to trade in milk and milk products, including infant formula. This is of particular relevance to Ireland, noting concerns about MAP in raw milk [18], and the significant share (15%) Ireland has in the world powdered infant formula market [1]. This paper aims to describe the impact of JD on an Irish commercial dairy herd, and the effect of animal JD status on several measures of production. The history of the JD outbreak on this farm, including its impact on farm income, has been documented previously [3]. Farm performance prior to the disease outbreak was in the upper quartile of its peer group of milk monitored herds.This retrospective case study was undertaken on a single commercial dairy herd (the 'case herd') located in the province of Munster in Ireland. The case study is an investigation of the effect of Johne's disease on production in the herd confirmed. The Munster region in the south west of Ireland is the country's premier dairy area: in 2006, 61% of dairy calves in Ireland w
Assessment of the Economic Impact of a Brucellosis Control Program in A Dairy Herd Using the Partial Budget Method
R.M. Munoz del,M.F.Montano,T.B. Renteria,E. Sanchez,J.F. Moreno,A. Perez,S. Saucedo
Journal of Animal and Veterinary Advances , 2012,
Abstract: A study to estimate the economic impact of an eradication program for a brucellosis outbreak was performed in a dairy herd in the Mexicali Valley in Mexico. The study was done in a dairy herd with 175 Holstein Friesian cows. The presence of Brucella abortus was confirmed by bacteriological analysis done on milk samples obtained from positive animals. The impact was estimated by comparing economic costs and losses. The costs and income related with the control program were considered and used to determine the economic impact by means of a partial budget analysis. The result of the analysis indicated that the use of the government recommended program had excessively high costs which made the program economically unfeasible. Taking into account that the highest loss was as a result of the reduction of milk production because of the cows culled from the herd, it was considered that to make the program attractive to other milk producers, the government should establish a subsidy that paid for the cattle that was slaughter because in the case of the milk farm considered in this study with this payment, plus the income obtained from the sell of the positive cattle the amount of money obtained helped to reduce in 87.6% the total loss associated to the eradication program.
Dairy Sector in the Crises: The Case of Turkey
Sema Gun,I. Coskun Ceylan,Ilkay Dellal,Gulsen Keskin,Emine Olhan,Gursel Dellal
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2010.429.435
Abstract: Agriculture especially animal product markets are vulnerable in the crises times. The 2006-2008 period has passed within different crises in entire world. Each crisis has an effect on agricultural sector. Extreme meteorological events due to climate change, food crises and finally Global Financial Crises in 2006-2008 affect the number of actors. In this study, it was studied that the outlook of the agricultural sector and dairy sub sector in Turkey in this period. Therefore, general structure of crises, economic and sectoral developments were given. And dairy sub sector expected to be mostly affected was examined as a case.
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