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- Title
Genetic analysis of reproductive traits of Tharparker cattle at organized farms in Rajasthan.
- Authors
Mishra, Geetesh; Siddiqui, M. F.; Ingle, V. S.; Pal, R. S.
- Abstract
The present study was carried out from the data obtained on the reproduction performance of 95 Tharparkar cattle over the period 1995-2014. The overall least squares mean and standard error for age at first calving, service period, gestation period, dry period and intercalving period were 1769.07± 29.80, 117.53± 2.39, 281.62± 0.37, 105.03 ± 2.09 and 399.97 ± 2.44 days, respectively. The Least Squares Analysis of Variance has revealed that there was a significant effect of sire (P<0.01) and period (P<0.05) on age at first calving and the service period is significantly influenced by period and parity of the animal. Similarly the gestation period was affected by parity, dry period was affected by period of study and inter calving period was substantially influenced by period and parity of the animal. The observed correlation coefficients among different reproductive traits were significant to highly significant where as the estimates of heritability for the same traits were low to moderate. The significant effect of several non-genetic factors on most of the reproductive traits suggesting that they are low heritable and cannot be improved by conventional selection methods but can only be improved through effective management practices, nutrition, health etc.
- Subjects
RAJASTHAN (India); CATTLE genetics; CATTLE reproduction; CATTLE parturition; PREGNANCY in animals; HERITABILITY
- Publication
Indian Journal of Animal Research, 2018, Vol 52, Issue 8, p1129
- ISSN
0367-6722
- Publication type
Article
- DOI
10.18805/ijar.B-3350