Prevalence of clinical mastitis in cattle and buffaloes under farmers' management systems in the western hills: a survey report
1996
Joshi, H.D. | Shrestha, H.K. (Lumle Agricultural Research Centre, Pokhara, Kaski (Nepal))
A questionnaire survey was conducted to determine the prevalence of clinical mastitis in cattle and buffaloes in the western hills of Nepal. A total of 605 cattle and buffaloes (112 cattle and 493 buffaloes) calved between July 1991 and June 1992 were recorded on the basis of clinical symptoms to determine the prevalence of bovine clinical mastitis (CM) in relation to associated factors. In buffaloes the prevalence of CM was found to be 17.1 percent in Murrah crossbreeds, 8.8 percent in locals, and 8.3 percent in local cattle. There was no CM in Jersey cross cattle. The parity and lactation stage were found to be significant influencing factors for prevalence of CM in buffaloes; the prevalence of CM was highest (17.6 percent) during the first lactation and declining in the successive lactations. Eighty nine percent of CM was recorded in the first month of lactation. Considerable seasonal variation in the prevalence of CM was recorded with 75.9 percent of the cases found during summer (June - Sept) and only 5.5 percent in winter (Dec - Feb). Among the 85 quarters infected, 28.2 percent teats lost their production permanently. Increasing trend of CM was found in cattle at lower altitudes whereas in buffaloes the problem was highest (11.9 percent) in mid-hills followed by low-hills (9.5 percent) and high hill (8.7 percent). CM was found to be same in both stall fed and semi stalled (10 percent) systems whereas it was found to be lower (2.2 percent) in extensive management systems.
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Эту запись предоставил Nepal Agricultural Research Council