Influence of number of daughters per sire on genetic evaluation of Mehsana Buffalo bulls under field progeny testing

First lactation production records of 7,825 Mehsana buffaloes, sired by 200 sires maintained at DudhsagarResearch and Development Association, Dudhsagar Dairy, over a period 25 years (1989-2013), wereutilised for estimation breeding value the first milk yield using BLUP - Univariate sire model andanimal WOMBAT software. The study aimed to find out optimum number daughters that maybe sufficient more accurate unbiased estimate buffalo bulls. effectivenessof different models run with per evaluation was judged on basis within-sirevariance. maximum minimum estimated values were 1924.04 l (BLUP-AM, 5 daughters/sire)and 1855.61 (BLUP-SM, 30 daughters/sire), respectively. However, error variance highest whenfive daughters/sire evaluated lowest, when evaluated. present revealedthat having 5, 10 15 are equally efficient. if we doevaluation than 20, or 30, additional accuracy approximately 2.5%, 3% and5%, respectively may be obtained.