Livestock Studies 2005, Vol 45, Num, 2     (Pages: 009-023)

Production Traits of Kilis, Simmental x Kilis F1, B1 and F1xB1 Genotypes

Serdar KOÇAK 1 ,Ceyhan ÖZBEYAZ 2

1 Afyon Kocatepe Üniversitesi Veteriner Fakültesi Zootekni Anabilim Dalı, Afyon
2 Ankara Üniversitesi Veteriner Fakültesi Zootekni Anabilim Dalı, Ankara
Viewed : 385 - Downloaded : 374 This study was carried out at Ceylanpınar State Farm. It` s aimed that to determine in study reproductive and milk yield traits, live weight, growth traits, incidence of disease and livability rates between 1994-2003 years.

In this research Kilis, F1, B1 and F1xB1 genotypes; first conception ages; 596.61, 570.03, 584.84 and 565.45 day;. first calving ages, 888.21, 853.76, 852.89 and 851.31 days; service period, 161.25, 123.62, 105.14 and 93.69 days; the number of insemination per conception, 1.56, 1.53, 1.51 and 1.25 ; calving interval, 448.37, 404.05, 394.35 and 376.94 days; conception rate, 83.3, 91.8, 92.5 and 95.5 % ; calving rate, 82.4, 89.9, 90.2 and 95.5 %; twinning rate was determined, 0.4, 1.2, 7.1 and 4.6 %, respectively. The differences among genotypes for service period, calving interval, conception rate, calving rate and twinning rate were found statistically significant (P<0.05; P<0.01; P<0.001).

In Kilis, F1, B1 and F1xB1 genotypes were found actual milk yield; 1360.27, 2066.58, 1984.11 and 1704.91 kg; corrected milk yield, 1490.52, 2437.24, 2557,89 and 2159,27 kg, lactation length, 198.35, 261.90, 270.11 and 242.83 days, dry period, 201.23, 137.29, 131.08 ve 113.23 days, respectively. The differences among genotypes for actual milk yield, corrected milk yield, lactation length and dry period were found statistically significant (P<0.001), crossbred genotypes value were higher than Kilis.

The differences among genotypes for incidence of disease were found statistically significant (P<0.001). Kilis, F1, B1 and F1xB1 genotypes days incidence of disease was determined until weaning age (90 days); 27.71, 0.00, 26.32 and 41.18 % in male, 28.74,0.00, 32.69 and 35.19 % in female, respectively.

In this study, differences among genotypes for determined livability values were found statistically significant (P<0,01). Kilis, F1, B1 and F1xB1 genotypes at weaning age (90 days) livability rates were determined determined; 77.11, 100.00, 89.47 and 95.10 % in male, 85.06, 100.00, 90.38 and 94.32 in female, respectively.

As a result of, reproductive and milk yield traits with growth, incidence of disease and livability rate of crossbred genotypes were better than Kilis breed. It is advised that corssbred genotype is better than Kilis (South Anatolian Red) for fattening because growth performance had got higher than Kilis . Keywords : Simmental, Kilis, crosbreeding, milk yield, fertility, growth, incidence of disease, livability