Autor(es):
Rodrigues, Naiara Nantes [UNESP] ; Rossi, Guilherme Fazan [UNESP] ; Vrisman, Dayane Priscila [UNESP] ; Taira, Augusto Ryonosuke [UNESP] ; Souza, Luana Lelis ; Zorzetto, Mariana Furtado ; Bastos, Natalia Marins [UNESP] ; Paro de Paz, Claudia Cristina ; Martins Hossepian de Lima, Vera Fernanda [UNESP] ; Monteiro, Fabio Morato ; Franco Oliveira, Maria Emilia [UNESP]
Data: 2020
Identificador Persistente: http://hdl.handle.net/11449/195259
Origem: Oasisbr
Assunto(s): Andrological; Bovine; Echogenicity; Echotexture; Vascular indices
Descrição
Made available in DSpace on 2020-12-10T17:28:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Ultrasonography can provide information about the integrity of organs; however, rarely is applied to the reproductive organ evaluation of bulls. The objective of the present study was to characterize and compare values for variables and ultrasonographic characteristics of the testes, epididymis and accessory sex glands, as well as spectral Doppler indices of the testicular and internal iliac arteries, between peri- and post-pubertal Nelore and Caracu bulls. Nelore (n = 203) and Caracu (n = 79) bulls were assigned by age class: peri-pubertal (12-15 months) and postpubertal ( > 22 months). Data were analyzed using SAS's PROC MIXED procedure (P < 0.05). The biometric variables of the testes and cauda epididymis differed between peri- and postpubertal Nelore and Caracu bulls. There was a difference between breeds for the vesicular glands, ampulla of vas deferens, disseminate portion of the prostate, and craniocaudal dimension of the bulbourethral glands. Echogenicity of the testicular parenchyma differed between breeds and age classes. The pulsatility and resistive indices of the testicular arteries differed between Nelore and Caracu bulls. The biometric and ultrasonographic characteristics of the testes, epididymis and accessory sex glands, as well as of the arterial indices in bulls are affected by genetic group and age class, and when assessed there is useful information regarding the progression of sexual maturation.
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
Ctr APTA Bovinos De Corte, Inst Zootecnia, Rodovia Carlos Tonani,Km 94, BR-14160900 Sertaozinho, SP, Brazil
Univ Estadual Paulista, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
