This study was conducted to determine first age reproduction characteristics of indigenous Kıvırcık, Sakız and Gökçeada sheep breeds and growth performances of ewe lambs which have been kept in Bandırma Sheep Research Station (BSRS). The data of reproduction characteristics of ewes and growth characteristics of lambs were collected on 15 Kıvırcık, 8 Sakız and 10 Gökçeada ewes, and on 16 Kıvırcık, 12 Sakız and 11 Gökçeada lambs, respectively. After the lambs completed their fifth month ages, estrus detection was carried out with a teaser ram twice a day with 12 hour intervals. For the Kıvırcık, Sakız and Gökçeada lambs, the first oestrus weights were 37.93, 33.35 and 29.75 kg; first oestrus ages were 315, 320 and 337 days; oestrus durations were 30.99, 25.85 and 20.28 hours and the duration of the oestrus cycles were 16.59, 19.91 and 17.76 days, respectively. The birth weights of Kıvırcık, Sakız and Gökçeada lambs were found to be 3.64, 3.91, 3.28 kg; the weaning weight (WW), 31.01, 25.44 and 23.67 kg, the six month live weight (SMLW), 32.87, 26.95 and 24.15 kg, the yearling live weight (YLW), 39.01, 30.95 and 30.27 kg and the average daily weight gain (ADWG), 0.271 0.257 and 0.202 kg, respectively.
SummaryTitle ofthe paper: Effect of intensive group condition and sex on the oral stereotypes and some behaviour traits in fattening lambs Oral stereotypes are a kind ofthe forms of behavioural abnormalities and many husbandry factors can cause the development of such behaviours in almost all domestic species. In this study, effects of housing based on group condition and also sex differences on the development of oral stereotypes were investigated in fattening lambs Ten male and ten female Turkgeldi synthetic breed of lambs were used. Animals were assigned to sex groups at u e ,; e ?'n n,ng ° StUdy and h°USed '" pens that consisted of metal feed through and water buckets on a straw bedded floor during the experiment. Behavioural observations were taken by two observer and time sampling technique was-used. Activities such as biting, licking and chewing of through, water bücket and also bars of pen were recorded as oral stereotypes. Generally, it was indicated that intensive group condition in fattening lamb. causes the development of behavioural abnormalities related to nutritional origin. Activities towards the bedding material, standing, lying and wool chewing behaviours were significantly affected by sex. The male lambs showed more activities in standing and wool licking and wool chewing behaviours than the females while the lying and activity towards the bedding material observed more frequently in the female group. This finding indicated that general activity was high in the male lambs. There was no significant sex effect on the total oral stereotypes. It was concluded that lack of structural materials have an important role in the development of oral stereotypes. In addition some stressful conditions that caused by group housing may also resulted in the development of such abnormalities especially for the male lambs.
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