Application of multi-fetal B-ultrasound in Hu sheep breeding system
In this paper,based on the important link of ewe pregnancy identification in Hu sheep breeding,Ovi-Scan portable veterinary multi-fetal B-ultrasound produced by British BCF was introduced to assist breeders in timely,accurate and rapid detection of the pregnancy status of breeding ewes.Through the multi-fetal B-ultrasound pregnancy examination of 406 adult ewes,223 young ewes and 184 mixed ewes,the pregnancy rate was 80.05%,82.96%and 69.56%,respectively,and the average accuracy was 99.34%.The accuracy of B-ultrasound in pregnancy examination of ewes with 3 lambs or more was 95.39%.A total of 152 ewes with 3 lambs and above gave birth,and 463 lambs were born.The average birth weight of lambs was 3.27 kg,which was 4.81%higher than that of last year.Through the use of multi-fetal B-ultrasound,the detection rate of pregnancy of ewes was significantly improved,and the pregnant ewes were timely mated,and the pregnant ewes with 3 lambs or more were fed in separate groups,which effectively increased the birth weight of lambs and improved the breeding efficiency of Hu-sheep ewes.
Hu sheepmulti-fetal B-ultrasoundcompound conception ratelamb birth weight
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