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Original Scientific Article
 
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Use of hormonal and ultrasonographic examinations to determine the fetal number in Bulgarian local goats
Manol Karadaev1, Ivan Fasulkov1, Radina Vasileva2, Nasko Vasilev1
1Department of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, 6015 Stara Zagora, Bulgaria
2Student of Veterinary Medicine, Faculty of Veterinary Medicine, Trakia University, 6015 Stara Zagora, Bulgaria

 

ABSTRACT
The purpose of the present study was to determine the fetal number in goats by using hormonal and ultrasonographic examinations. The experiments were conducted with 106 clinically healthy Bulgarian local goats, 1.5 to 7 years of age, weighing 35-52 kg. Hormonal examinations were performed on 24 goats. Serum progesterone concentrations were measured during a 7 days interval, between 21-63 day of pregnancy, and during a 14 days interval until the 133rd day of pregnancy. Ultrasound examinations were performed on 82 goats with a multi-frequency linear transducer (5.0-12.0 MHz). All animals were studied once during an interval of 7 days transrectally (21-28 day, 29-35 day, 36-42 day) and transabdominally (43-49 day, 50-56 day, 57-63 day), respectively. The accuracy of determining the number of singleton and multiple pregnancies by hormonal analysis were 51%, 58%, 69% and 47%, 52%, 62%, respectively. The accuracy of ultrasonography to determine the number of fetuses is highest in singletons 76.18%, followed by twins 72.56% and the lowest in triplets and more fetuses 21.43%. Highest accuracy, sensitivity and positive predictive diagnosis were established in the period 43-49 day of pregnancy (P<0.05). The obtained results show that the most appropriate period is between 42 and 49 day of pregnancy for determination of the fetal number in Bulgarian local goats using ultrasonography.
Key words: goats, ultrasonography, fetal number, progesterone

Mac Vet Rev 2019; 42 (1): i-xiii
   
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Available Online First: 3 November 2018
 
 
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References
 
 
 

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