SEASONALITY AND DIURNAL VARIATION IN PARTURITION IN SWAMP BUFFALOES OF ASSAM
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Authors
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D. BHUYAN
Department of Animal Reproduction, Gynaecology & Obstetrics
College of Veterinary Science, AAU, Khanapara, Guwahati – 781 022
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J.C. DUTTA
Department of Animal Reproduction, Gynaecology & Obstetrics
College of Veterinary Science, AAU, Khanapara, Guwahati – 781 022
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S. SINHA
Department of Animal Reproduction, Gynaecology & Obstetrics
College of Veterinary Science, AAU, Khanapara, Guwahati – 781 022
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A. DAS
Department of Animal Reproduction, Gynaecology & Obstetrics
College of Veterinary Science, AAU, Khanapara, Guwahati – 781 022
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N.K. SARMA
Department of Animal Reproduction, Gynaecology & Obstetrics
College of Veterinary Science, AAU, Khanapara, Guwahati – 781 022
Abstract
ABSTRACT
A total of 133 calving records were utilized to study the seasonality and diurnal
variation in calving in swamp buffaloes of Assam. The highest calving was reported in the
month of September (25.56%) and lowest (1.50%) in the month of January. In the season
wise distribution, the highest calving was recorded in the post monsoon season (60.90%)
and the lowest (6.02%) during the winter season, while no calving was recorded during pre
monsoon season. Majority of the animals delivered their calves during the late night and
early morning. The average body weight of male and female calves was 28.05± 0.58 kg and
27.14± 0.58 kg respectively. The sex ratio (male: female) was recorded as 45: 55.
Key Words: Swamp buffalo, Seasonality, Diurnal, Calving season
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