Reproduct ve and Growth Chacter st cs First Age of Bandirma-I and Bandirma-II Crossbred Ewe Lambs

The purpose of the study was to investigate first age reproduction and growth characteristics of Band rma-I and Band rma-II crossbred lambs which have been keeping on Marmara Livestock Research Institute. Band rma-I and Band rma-II females were kept to gather in a single flock after 3 month of age. The oestrus detection was performed twice a day (per twelve hours) by using teaser rams. The materials of the study were used 21 head female for first age reproductive traits and for growth characteristics 99 head and 89 head Band rma-I and Band rma-II lamb. The results of live weight first oestrus for Band rma-I and Band rma-II lambs were 45.30 kg and 47.30 kg, age of first oestrus 317.73 day and 321.330 day, the duration of oestrus 19.42 hour and 21.23 hour the duration of the cycle 16.12 day and 17.07 day, the duration of gestation length 145.74 day and 145.87 day, birth weight (BW) 4.23 kg and 4.12 kg, weaning weight (WWLW) 35.45 kg and 34.27 kg, six mount live weight (SMLW) 46.03 kg and 44.17 kg, yearling live weight (YLW) 47.97 kg and 46.634 kg and average daily live weight gain (ADLG), 0.394 kg and 0.381 kg respectively. The effects of genotype on BW, WW, SMLW, YLW and DLWG were not significant statistically whereas the effects of age of dam, birth type, and sex on growth characteristic were significant (P<0.001).In conclusion, Band rma-I and Band rma-II crossbred lambs were similar first age reproduction and growth characteristic of lambs.