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Ceyhan A.,Nigde University | Kaygisiz A.,Kahramanmaras Sutcu Imam University | Sezenler T.,Bandirma Marmara Livestock Research Institute
Journal of Animal and Plant Sciences | Year: 2011

The objective of this study was to estimate the effect of inbreeding on birth weight (BW), weaning weight (WW90), and lamb survival rate (LSR) in Saki{dotless}z sheep. The effect of inbreeding on BW, WW90, and LSR traits was studied by analysis of variance technique and regression method. Inbreeding had a significant effect on BW and the regression coefficient of inbreeding on BW was -0.0245±0.0076 kg (P<0.01). The mean level of inbreeding (F) of all animals overall years was 2.25% for lambs. The inbred lambs rate was 17.7%. The coefficient of inbreeding ranged from 6.25% to 25.0% and average was 12.68% for birth weight in inbred lambs. Inbreeding weren't a significant effect on weaning weight at 90 days of age and lamb survival rate. It was concluded that inbreeding showed deleterious effects on birth weight and had a no effect on lamb's weaning weight and survival rate.

Sezenler T.,Bandirma Marmara Livestock Research Institute | Ozder M.,Namik Kemal University | Yildirir M.,Bandirma Marmara Livestock Research Institute | Ceyhan A.,Nigde University | Yuksel M.A.,Bandirma Marmara Livestock Research Institute
Journal of Animal and Plant Sciences | Year: 2011

This study was carried out on Kivircik, Sakiz and Gokceada sheep bred at Marmara Livestock Research Institute. A total of 156 heads sheep from different age groups were used in the study. The relationships between Body Condition Scores (BCS) and Body Weights (BW) have been investigated in three different physiological periods such as breeding, lambing and weaning period of indigenous sheep breeds in Turkey. As a result of the analyses conducted, the relationship between body condition score and body weight were found to be BW = 28.716+6.962* BCS; BW = 39.977+6.771* BCS; BW = 33.444+7.074* BCS for the breeding, lambing and weaning periods respectively. Similarly, correlations (r) between them were found to be 0.817, 0.731, 0.746 respectivel (P<0.01). The regression coefficients of BCS on BW were 6.962 kg, 6.771 kg, 7.074 kg at breeding, lambing, weaning respectively and also significant (P<0.01). The findings demonstrate that body condition score is a good indicator of changes in body weights in Kivircik, Sakiz and Gokceada indigenous sheep breeds and will assist sheep breeders with regard to the feeding program to be applied particularly before the breeding season.

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