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Determining the factors affecting the gestational length in sheep

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This research aimed to determine the effects of body weight, the body condition score (BCS), body measurements, birth type (single offspring or twin birth), birth weight and sex on the gestational length in sheep (n = 111). Karayaka sheep raised on a private farm were used in the study. Progeny yield characteristics in sheep were also determined (n = 139). Estrus was monitored daily using teaser rams from August to September 2016. According to our findings, the pregnancy rate, infertility rate, fecundity, and twin and single birth rates were 93.52 , 6.48 , 93.52 , 14.62 and 85.38 respectively. The effect of age on the BCS in sheep at mating was found to be significant (P = 4.5 at mating time (P 0.05); however, it was observed that the gestational lengths for male offspring and single offspring (non-multiple births) were longer. In addition, it was detected that the gestational length was different in sheep with a BCS >= 4.5. The time spent in the womb is important with respect to obtaining a healthy lamb. For profitable production, a BCS of between 2.5 and 4 is recommended in sheep. It is thought that the use of body condition scoring, which is easy information for the breeder to utilize, will have a positive effect on determining the bodily reserves of sheep and the reproductive efficiency as well as on obtaining a healthy lamb. More studies on the gestational length in sheep are required.

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