Improvement studies on mutton sheep for Marmara region conditions: I. fertility, lamb survival, and growth traits of lambs

摘要

The present study was conducted to compare the fertility of ewes, the survival rates, and the growth performance of lambs that were crossbred by mating German Black-Headed Mutton (GBM) rams with K?v?rc?k ewes. The average lambing rates of the GBM × K(F1), Band?rma-I and Band?rma-II genotype, and K?v?rc?k ewes were 80.00%, 75.73%, 76.78%, and 83.72%, respectively. The differences in lambing rates between the genotypes were significant (P