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Bu çalışma, karasal iklim koşullarında Bafra kuzularda yaşama gücü ve büyüme özelliklerinin incelenmesi amacıyla yapılmıştır. Araştırmada 179 baş Bafra kuzunun büyümenin çeşitli dönemlerinde yaşama gücü, büyüme özellikleri ve bazı vücut ölçüleri incelenmiştir. Büyüme ve vücut ölçülerinin analizinde En Küçük Kareler, yaşama gücünün analizinde Ki-Kare yöntemlerinden yararlanılmıştır. Kuzuların 30. ve 90. gün yaşama gücü sırasıyla %96.65 ve 90.50 olmuştur. Yaşama gücüne doğum tipi ve cinsiyetin etkisinin önemsiz (P>0.05) olduğu belirlenmiştir. Kuzuların doğum, 30., 60. ve 90. gün canlı ağırlıkları yönünden en küçük kareler ortalamaları sırasıyla 3.58±0.541, 8.10±0.127, 12.71±0.223 ve 18.08±0.326 kg olarak bulunmuştur. Kuzu canlı ağırlıklarına incelenen çevre faktörlerinden cinsiyetin etkisin önemsiz (P>0.05), doğum tipinin etkisinin ise 60. güne kadar yüksek düzeyde önemli olduğu (P= 0.000), 60. günde ve sütten kesim döneminde (90. gün) ise tek doğanlarda canlı ağırlıklar rakamsal olarak yüksek olsa da doğum tipinin canlı ağırlığa etkisinin önemsiz (P>0.05) olduğu hesaplanmıştır. Kuzularda sütten kesim öncesi (ortalama 71. gün) cidago yüksekliği, göğüs derinliği, vücut uzunluğu, göğüs çevresi, incik çevresi ve kuyruk çevresi ölçüleri sırasıyla 47.86±0.615, 18.52±0.246, 45.68±0.840, 56.47±0.881, 6.50±0.075, ve 12.01±0.502 cm olmuştur. İncelenen bu vücut ölçülerine doğum tipi ve cinsiyetin etkisi önemli (P>0.05) olmamıştır. Sonuç olarak karasal iklim koşullarında yetiştirilen Bafra kuzuların büyüme ve yasama gücü özelliklerinin iyi düzeyde olduğu tespit edilmiştir., This study investigates the survival and growth characteristics of Bafra lambs born and reared under steppe climate conditions. The survival, growth and certain body measurements of 179 head of Bafra lambs were observed. Least Squares Method was applied for the analysis of growth and body measurements, and Chi square test was used for the analysis of survival rates. The survival rates of the lambs on days 30 and 90 were 96.65% and 90.50%, respectively. Birth type and sex had no significant effect on survival rates (P>0.05). The live weights of the lambs on days birth, 30, 60 and 90th were 3.58±0.541, 8.10±0.127, 12.71±0.223 and 18.08±0.326 kg, respectively. Among the environmental factors affecting the live weights of the lambs, the effect of sex was not significant (P>0.05), while the effect of birth type was highly significant (P=0.000) up until day 60, but decreased thereafter. Furthermore, the effect of birth type on live weight was not significant (P>0,05) in single lambs on day 60 and 90th, even though the live weights were numerically high. The pre-weaning (average 71 day) withers height, chest depth, body length, chest girth, cannon bone circumference and tail circumference of the lambs were 47.86±0.615, 18.52±0.246, 45.68±0.840; 56.47±0.881, 6.50±0.075, and 12.01±0.502 cm, respectively. The effect of birth type and sex on these body measurements were not significant (P>0.05). It was concluded that the growth and survival characteristics of Bafra lambs reared under the steppe conditions were at a satisfactory level.

The study aimed to identify the effects of birth time, birth weight, and the time to first grooming on the time to first successful stand up and sucking of the pure and crossbred native lambs. Data were recorded from pure (22 B-Bafra and 20 AKK-Akkaraman) and crossbred (19 BA F

Hybrids with different morphological and yield characteristics are used in the table egg production. There is no change in the cage systems according to the different hybrids in the regulation. This study aimed to investigate the effects of genotype (brown laying hybrids (BLH) and white laying hybrids (WLH)) and cage type (conventional and enriched cages) on behaviours of hens at the 90% egg production level. Behavioural data were recorded with video cameras during the 4 days. Data were analysed in 6 time periods as 05.00-08.00 am, 09.00-12.00 am, 01.00-04.00 pm, 05.00-08.00 pm, 09.00-12.00 pm and 01.00-04.00 am. Behaviour inspection each hour was divided into 4 quarters and the first 3 min of each quarter were evaluated. Behaviours were represented as the proportion of the total behaviour performed in the time period by a given hen. There was no interaction between hens' behaviour and the genotype at the same egg production level. The frequency of feeding behaviour was found to be significantly lower (P 0.01), but comfort behaviour was higher (P 0.05) in hens that were reared in the enriched cages. Only preening was seen as a comfort behaviour due to the cage size. The feeding, drinking, pecking hen, comforting, walking, sitting, resting and perching behaviours changed during the day (P 0.01). Especially, the transition from light to dark influenced the perching behaviour negatively. No interactions were detected amongst genotype, cage type and time period. Feeding behaviour decreased and the comfort behaviour increased in the hens that were reared in the enriched cages because there were materials that would exhibit different behaviours. Hens in the enriched cage could not suddenly adapt to the dark and light period. For this reason, transitions to light and dark periods in poultry houses should be provided gradually, as in natural life.