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    Reproductive and productive characteristics in Bafra (Chios x Karayaka) ewes, growth, carcass performance and survivability of lambs
    (Univ Zulia, Facultad Ciencias Veterinarias, 2023) Koseman, Abdurrahman; Kul, Selim; Seker, Ibrahim; Kocyigit, Sezgin; Karaca, Mehmet
    This study was carried out on Bafra (Chios x Karayaka) breed to determine the fertility characteristics of sheep, growth performance, survivability and carcass weights of lambs. For this purpose, the reproductive characteristics of 600 sheep aged 2-5 years and the survivability of 1,150 lambs born from these sheep were determined. In addition, the growth performance characteristics, slaughter, and carcass weights of 65 lambs born from 38 randomly selected ewes 3-4 years old were determined. In the study, the pregnancy rate was 90.00%, the birth rate was 87.16%, singleness 15.00%, twins 80.00%, and triplet 5.00%, lamb yield per ewe 1.90, number of lambs per birth 2.20 was calculated. Birth and weaning (90(th) d) weights as well as 61-90(th) d of live weight gains of male and female lambs were found as 4.26 and 3.57 kg, 24.15 and 21.32 kg, 265.75 and 231.72 g, respectively. The 120(th) d survivability, slaughter and carcass weights and carcass yields of lambs were determined as 97.74%, 47.10 kg, 21.61 kg and 45.92%, respectively. As a result, although the Bafra sheep is a breed that can be recommended to be raised in terms of the characteristics discussed, more scientific research is needed on it.
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    Udder morphology and physicochemical structure of milk in Bafra (Chios x Karayaka) ewes
    (Univ Zulia, Facultad Ciencias Veterinarias, 2024) Seker, Ibrahim; Koseman, Abdurrahman; Kul, Selim; Kocyigit, Sezgin; Seker, Pinar
    It was aimed to determine the effects of udder type on udder traits, milk yield and some physicochemical properties of Bafra (Chios x Karayaka) ewes. The lactation length, daily milk yield, lactation milk yield, and daily average milk yield of ewes were determined. In addition the udder type were determined, udder and teat traits were measured. The fat, solid non-fat, protein, lactose, mineral, density, freezing point, and conductivity values of the milk were determined. Type 3 udder was observed at the highest rate (37.5%) and Type 5 udders were not detected in ewes. The lactation length, daily, and lactation milk yield values were calculated as 177.75 days, 868.60 g and 156.86 kg, respectively. Udder circumference, udder width, udder depth, right teat length, left teat length, right teat diameter, left teat diameter, the distance between teats and udder floor height from the ground was calculated as 40.95 +/- 0.63, 12.36 +/- 0.30, 16.24 +/- 0.40, 2.85 +/- 0.09, 2.76 +/- 0.09, 1.49 +/- 0.03, 1.43 +/- 0.04, 15.35 +/- 0.23, and 31.88 +/- 0.70 cm, respectively. Rates of fat, protein, lactose, solid non-fat, mineral and also density, freezing point, and conductivity were calculated at 5.17 +/- 0.30, 1039.08 +/- 0.31, 6.24 +/- 0.05, 11.51 +/- 0.10, 0.88 +/- 0.009, 1039.08 +/- 0.31 g center dot mL-1, -0.80 +/- 0.009 degrees C and 5.26 +/- 0.03 mS center dot cm-1, respectively. It has been determined that Bafra sheep can be a suitable breed for breeding in the conditions of Malatya, Province of Turkiye. However, more scientific research should be done on this topic and the level of milk production should be improved.