TRANSRECTAL ULTRASOUND TO IDENTIFY THE SEX OF CAPRINE FETUSES

Authors

  • Cristiano Rocha Aguiar Filho Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil
  • Leopoldo Mayer Freitas Neto Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil
  • Maico Henrique Barbosa Barbosa Santos Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil
  • Edivaldo Rosas Santos Junior Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil
  • Paulo Fernandes Lima Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil
  • Marcos Antonio Lemos Oliveira Universidade Federal Rural de Pernambuco (UFRPE), Recife, Pernambuco, Brasil

DOI:

https://doi.org/10.5216/cab.v11i1.3990

Keywords:

Animal reproduction

Abstract

The aim of this study was to establish the period for sexing caprine fetuses by transrectal ultrasonography through viewing the structures of the external genitalia, monitoring of the final positioning of the genital tubercle, and the day that the penis, scrotum, clitoris and nipples were seen. Fetuses of Boer (n = 36), Brownscale Alpine (n = 31) and Anglo-nubian (n = 27), breeds in the 40th-60th day of gestation, were tracked using linear transducer of 6.0 and 8.0 MHz. The final positioning of the genital tubercle occurred in the period from 47.11 ± 1.45 days in males and 45.62 ± 1.36 days in females. The visualization of structures of the external genitalia was in the period from 49.42 ± 2.20 days for scrotum; 49.37 ± 2.19 days for penis; 49.23 ± 1.75 days for nipples and 49.98 ± 2.52 days for clitoris. The migration of female genital tubercle in the fetus occurred earlier (P < 0.05) than in males, and the visualization of penis and scrotum was earlier (P < 0.05) than the nipples and clitoris, there was no difference (P > 0.05) among the structures of the same sex. In conclusion, although the sexing of caprine fetuses can be done before the 55th day of pregnancy, it is recommended to perform it only after the visualization of the structures of the external genitalia for a greater security in the sex identification.

KEY WORDS: Clitoris. nipples, penis, scrotum, sexing.

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Published

2010-04-01

How to Cite

FILHO, Cristiano Rocha Aguiar; NETO, Leopoldo Mayer Freitas; SANTOS, Maico Henrique Barbosa Barbosa; JUNIOR, Edivaldo Rosas Santos; LIMA, Paulo Fernandes; OLIVEIRA, Marcos Antonio Lemos. TRANSRECTAL ULTRASOUND TO IDENTIFY THE SEX OF CAPRINE FETUSES. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 11, n. 1, p. 125–130, 2010. DOI: 10.5216/cab.v11i1.3990. Disponível em: https://revistas.ufg.br/vet/article/view/3990. Acesso em: 6 dec. 2025.

Issue

Vol. 11 No. 1 (2010)

Section

Veterinary Medicine

License

Copyright (c) 2010 Brazilian Animal Science/ Ciência Animal Brasileira

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