RESUMO
Mastitis is an infection of mammary glands caused by microorganisms, which affects the dairy cattle worldwide. Subclinical mastitis are asymptomatic, but with decrease in production. Diagnosis is made through somatic cell count (SCC) in milk, and the greater the amount of these cells, the greater the productivity loss from the animal. In this research we tested the applicability of on-farm testing methodologies for the rapid diagnosis of Subclinical Mastitis, by the use of the California Mastitis Test (CMT) and a modified Wisconsin Mastitis Test (Somaticell®) at the time to perform manual milking. Forty five 45 lactating cows, belonging to three family dairy farms located at the following Regions of Rio de Janeiro State, Brazil: Coastal Lowlands; Metropolitan; and Northwest, were analyzed. From 177 mammary quarters tested, 73 (41.2%) presented positive result at CMT (Figure 1), and 82 (46.3%) positive result at Somaticell® (Figure 2). There was a variation of 5.1% between one test and the other; 17 teats (7 animals) presented positive result at Somaticell® and negative at CMT, while 8 teats (2 animals) presented positive result at CMT and negative at Somaticell®. Three cows had already lost one mammary quarter. Both tests have a visual reading, although CMT is a qualitative test with subjective reading of positivity: negative (-), positive (+, ++, +++ e ++++), and Somaticell® h
O artigo não possui resumo em português.
RESUMO
Diarrhea is a major disorder affecting calves in the first three weeks of life in different countries, causing significant economic losses. The main calf diarrheal diseases of bacterial origin are Colibacillosis, caused by Escherichia coli, and Paratyphoid or Salmonellosis, caused by strains of Salmonella spp. The lack of hygiene of handlers and facilities, contribute to outbreaks of diarrhea among young animals. Calves become infected orally through contaminated food or water, and the contamination by feces on floors, beds and in the feed, which could be avoided if adopted effective and appropriate management measures in animal husbandry. In this study a survey was made of the presence of pathogenic bacteria in feces of calves belonging to three family dairy farms located in Coastal Lowlands, Metropolitan, and Northwest Regions of RJ. A questionnaire on herd management was completed, observing the hygienic conditions of the location, type of feeding, and the physical appearance of the cows and calves (presence of ticks, bristly hair and thinness). A total of 41 stool samples were obtained, collected using sterile swabs (with Cary & Blair medium) for transport to the laboratory. Enrichment culture media were used to obtain initial growth, and dehydrated selective media Compact Dry EC® (for E. coli) and Compact Dry SL® (for Salmonella spp.) were tested, aiming at the presump
O artigo não possui resumo em português.
RESUMO
Diarrhea is a major disorder affecting calves in the first three weeks of life in different countries, causing significant economic losses. The main calf diarrheal diseases of bacterial origin are Colibacillosis, caused by Escherichia coli, and Paratyphoid or Salmonellosis, caused by strains of Salmonella spp. The lack of hygiene of handlers and facilities, contribute to outbreaks of diarrhea among young animals. Calves become infected orally through contaminated food or water, and the contamination by feces on floors, beds and in the feed, which could be avoided if adopted effective and appropriate management measures in animal husbandry. In this study a survey was made of the presence of pathogenic bacteria in feces of calves belonging to three family dairy farms located in Coastal Lowlands, Metropolitan, and Northwest Regions of RJ. A questionnaire on herd management was completed, observing the hygienic conditions of the location, type of feeding, and the physical appearance of the cows and calves (presence of ticks, bristly hair and thinness). A total of 41 stool samples were obtained, collected using sterile swabs (with Cary & Blair medium) for transport to the laboratory. Enrichment culture media were used to obtain initial growth, and dehydrated selective media Compact Dry EC® (for E. coli) and Compact Dry SL® (for Salmonella spp.) were tested, aiming at the presump
O artigo não possui resumo em português.
RESUMO
Mastitis is an infection of mammary glands caused by microorganisms, which affects the dairy cattle worldwide. Subclinical mastitis are asymptomatic, but with decrease in production. Diagnosis is made through somatic cell count (SCC) in milk, and the greater the amount of these cells, the greater the productivity loss from the animal. In this research we tested the applicability of on-farm testing methodologies for the rapid diagnosis of Subclinical Mastitis, by the use of the California Mastitis Test (CMT) and a modified Wisconsin Mastitis Test (Somaticell®) at the time to perform manual milking. Forty five 45 lactating cows, belonging to three family dairy farms located at the following Regions of Rio de Janeiro State, Brazil: Coastal Lowlands; Metropolitan; and Northwest, were analyzed. From 177 mammary quarters tested, 73 (41.2%) presented positive result at CMT (Figure 1), and 82 (46.3%) positive result at Somaticell® (Figure 2). There was a variation of 5.1% between one test and the other; 17 teats (7 animals) presented positive result at Somaticell® and negative at CMT, while 8 teats (2 animals) presented positive result at CMT and negative at Somaticell®. Three cows had already lost one mammary quarter. Both tests have a visual reading, although CMT is a qualitative test with subjective reading of positivity: negative (-), positive (+, ++, +++ e ++++), and Somaticell® h
O artigo não possui resumo em português.