Genetic analysis of reproductive Traits of Tharparker cattle at organized farms in Rajasthan 

DOI: 10.18805/ijar.B-3350    | Article Id: B-3350 | Page : 1129-1133
Citation :- Genetic analysis of reproductive Traits of Tharparker cattle at organized farms in Rajasthan.Indian Journal Of Animal Research.2018.(52):1129-1133
Geetesh Mishra, M.F. Siddiqui, V.S. Ingle and R.S. Pal geeteshmishra09@gmail.com
Address : Department of Livestock Production and Management, College of Veterinary and Animal Sciences, Parbhani-431 402, Maharashtra, India.
Submitted Date : 8-12-2016
Accepted Date : 23-05-2017

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..

Keywords

Age at first calving Dry period Gestation period Intercalving period Reproduction performance Service period

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