Biometry and ultrasound evaluation of testicles and accessory glands in Santa Ines rams
AUTOR(ES)
Ribeiro, Mariana da Silva, Quirino, Celia Raquel, Bartholazzi Junior, Aylton, Pacheco, Aline
FONTE
R. Bras. Zootec.
DATA DE PUBLICAÇÃO
2017-04
RESUMO
ABSTRACT This work aimed to investigate the relationship between echogenicity, testicular biometry, and accessory gland biometry and evaluate the echogenicity pattern of these structures in Santa Ines rams. Fifty-four healthy Santa Ines sheep were classified into three age groups: group 1 - 3 to 5 months (pre-pubertal); group 2 - 7 to 11 months (pubertal); and group 3 - 13 to 28 months (sexually mature). The averages of testicular biometry and bulbourethral gland biometry were different among age groups. The testicular parenchyma was homogeneous with low echogenicity (pre-pubertal group) and medium echogenicity (pubertal and sexually mature groups), suggesting that testicular echogenicity can be a helpful tool to identify the start of puberty. The accessory glands were heterogeneous with low echogenicity in all age groups. Correlations were high between weight, biometry of testis and of bulbourethral gland and echogenicity of the accessory glands, indicating that sexually mature rams with higher body development have larger testicles and larger glands. We recommend the use of testicular biometry as a complementary evaluation of the reproductive efficiency of Santa Ines rams. The average values of echogenicity and the biometry of accessory glands are important parameters to assist the selection of breeding rams.
Documentos Relacionados
- Longitudinal reference ranges for fetal ultrasound biometry in twin pregnancies
- Toughness in Santa Inês lamb meat has negative impact on consumer evaluation
- Produção de leite de ovelhas da raça Santa Inês e mestiças F1 e desempenho de suas progênies resultantes do cruzamento com carneiros da raça Dorper
- Efficiency of metabolizable energy utilization for maintenance and gain and evaluation of Small Ruminant Nutrition System model in Santa Ines sheep
- An ultrastructural stereological study of accessory adrenocortical glands in bilaterally adrenalectomised rats*