Evaluation of two methods for early pregnancy diagnosis in ewes: transrectal ultrasonography and pregnancy detector for small ruminant (DPPR-80®)

Authors

  • Claudia Veronica Calamari Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal, São Paulo, SP
  • Sílvia Ferrari Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Reprodução Animal, São Paulo, SP
  • Frederico Fontoura Leinz Secretaria Estadual de Agricultura e Abastecimento, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Núcleo de Pesquisas Zootécnicas Sudoeste, Nova Odessa, SP
  • Carlos Frederico de Carvalho Rodrigues Secretaria Estadual de Agricultura e Abastecimento, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Núcleo de Pesquisas Zootécnicas Sudoeste, Nova Odessa, SP
  • Diorandi Bianchini Secretaria Estadual de Agricultura e Abastecimento, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Zootecnia, Núcleo de Pesquisas Zootécnicas Sudoeste, Nova Odessa, SP
  • Fernando Ferreira Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP
  • Ricardo Augusto Dias Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, São Paulo, SP

DOI:

https://doi.org/10.1590/S1413-95962003000400004

Keywords:

Ultrasound, Diagnosis, Ewes, Pregnancy

Abstract

Ultrasonography was perfomed in 88 ewes from Núcleo de Pesquisas Zootécnicas Sudoeste - Instituto de Zootecnia, São Paulo state, from march to may , 2001. Animals were examined from 19º to 33º days of pregnancy by transrectal ultrasonography in alternate days examinations, and by pregnancy detector for small ruminants (DPPR-80Ò) from 25º to 45º day. Positive diagnostic by transretal ultrasonography was obtained after yolk sac visualization. The embryo heartbeat was observed after 25 day of pregnancy. The positive diagnostic was obtained by pregnancy detector when embrionic heart was 160 to 200 beats/minute. Births confirmed the examinations. Three abortions ocurred during the experiment and these females were excluded from the group. From 85 ewes examined, 64 lambed. The transrectal ultrasonography accuracy in 19º day of pregnancy was 35,29%, with higher rate (82,53%) in 31º day. The doppler accuracy in 25º day was 24,71% and 34,12.00% in 45º day. Embryo heartbeat was detected by transrectal ultrasonography after 21 days of pregnancy and the first placentoms were observed after 25 days of pregnancy. In conclusion, transrectal ultrasonography was better than doppler in early pregnancy diagnosis in sheep.

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Published

2003-01-01

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UNDEFINIED

How to Cite

1.
Calamari CV, Ferrari S, Leinz FF, Rodrigues CF de C, Bianchini D, Ferreira F, et al. Evaluation of two methods for early pregnancy diagnosis in ewes: transrectal ultrasonography and pregnancy detector for small ruminant (DPPR-80®). Braz. J. Vet. Res. Anim. Sci. [Internet]. 2003 Jan. 1 [cited 2024 Jul. 19];40(4):261-6. Available from: https://www.revistas.usp.br/bjvras/article/view/11330