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Quantitative genetic studies in Indian cattle. III. Calving interval in Hariana



Quantitative genetic studies in Indian cattle. III. Calving interval in Hariana



J. Anim. Morph. Physiol 16: 209-220



III. Analysis of 533 records collected over 18 yr and involving calving intervals up to the 12th lactation revealed that 16.1% of Haryana cows had a 1st calving interval of 10-12 mth, and 75% one of 10-16 mth, the av. interval being 14.8 + 0.16 mth. Although calving interval increased with parity up to the 3rd interval, the effect was not significant. The av. length of lactations 1, 2 and 3 was 292.7, 279.9 and 281.0 days resp., and the average for all lactations was 263.1 days.

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