Effect of Age, Live Weight and Body Condition Score on Fertility in Estrous Synchronization of Kıvırcık Sheep

Authors : Farida İbrahim Nageye, Mehmet Koyuncu

Pages : 67-87

Doi:10.20479/bursauludagziraat.1418005

View : 55 | Download : 93

Publication Date : 2024-06-14

Article Type : Research Paper

Abstract :The effects of age, live weight and body condition score on the reproductive parameters of the ewes and the development of the lambs were investigated in Kıvırcık ewes whose estrus was synchronized. In this context, a total of 85 sheep with different age, body condition and live weight were evaluated. The average dam age, body condition score (mating-birth) and live weight (mating-birth) were found to be 2.98, (3.04-3.22) and (57.05-62.99), respectively. The effect of dam age and body condition score on lambing rate, multiple birth rate and viability was found to be significant (P<0.05). While the effect of live weights during periods of mating season and birth on the multiple birth rate was found to be significant, only the effect of live weight during the birth period on survival rate was significant (P<0.05). While the effects of dam age on birth weight are insignificant, their effects on weaning weight and daily live weight gain are significant (P<0.05). The regression coefficient of the live weight of the dams at birth on the weaning and daily live weight gain of the lambs is significant (P<0.05). It was determined that the correlation coefficient values (0.220-0.874) between the age, live weight and body condition of the sheep in different periods were significant (P<0.05; P<0.01).
Keywords : Koyun, yaş, canlı ağırlık, vücut kondisyonu, döl verimi, kuzu gelişimi