Abstract
Mortality patterns of two Zebu cattle breeds, Sahiwal and Tharparkar, and two crossbred strains, Karan Swiss and Karan Fries, maintained at the National Dairy Research Institute, Karnal were studied. Nine-year (1989–90 to 1997–98) data on mortality were analysed for year, season, age and cause effects on mortality rate. The overall mortality was 14.17%. The mortality in Sahiwal, Tharparkar, Karan Swiss and Karan Fries averaged 14.35%, 7.21%, 17.12% and 13.46%, respectively. The breed mortality rate did not vary significantly between years, seasons, age categories and causes of disease. However, the trends indicated appreciable difference in mortality rates. The mortality was highest in the year 1994–95 (19.53%) and lowest in 1991–92 (8.56%). There was very little variation in seasonal mortality rate and mortality rate averaged 4.53%, 4.81% and 4.84% in hot–dry (March–June), hot–humid (July–Octob er) and cold (November–February) seasons, respectively. The mortality up to 2 months of age accounted for a major share (50–60% or higher) in different breed groups. Digestive problems followed by respiratory disorders together accounted for 70–80% of total deaths.
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Prasad, S., Ramachandran, N. & Raju, S. Mortality Patterns in Dairy Animals under Organized Herd Management Conditions at Karnal India. Tropical Animal Health and Production 36, 645–654 (2004). https://doi.org/10.1023/B:TROP.0000042855.58026.bd
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DOI: https://doi.org/10.1023/B:TROP.0000042855.58026.bd