Andrological Points Classification (CAP) Nelore Bulls (Bos Taurus Indicus) Of Different Ages, Kept in Reproduction Central

Authors

  • Ana Clara Ferreira Batista

  • Manoel Lucas Carvalho da Silva

  • Augusto Urzedo Pereira Queiroz

  • Amanda Pifano Neto Quintal

  • André Belico de Vasconcelos

Keywords:

bovine; males; production; sanity

Abstract

Andrological Points Classification (CAP) Nelore Bulls (Bos Taurus Indicus) of Different Ages, Kept in Reproduction Central Summary-The objective of this study was to evaluate the reproductive potential of Nellore bulls at different ages, using the Andrological Points Classification system and to analyze the physical and morphological characteristics of the semen, when submitted to the cryopreservation protocol. Thus, 15 Nellore bulls were evaluated, divided into three groups according to age. The first group consisted of bulls aged ≤ 4 years, the second group of bulls aged 5 ≥ to ≤ 7 years, and the third group of bulls aged 8 ≥ to ≤ 10 years. From the evaluations performed, biometrics testicular and semen morphology, were relevant to determine the andrological classification by points (CAP index). For this purpose, the semen was collected using the electroejaculation method. And the results were expressed as mean and standard deviation.

Downloads

How to Cite

Andrological Points Classification (CAP) Nelore Bulls (Bos Taurus Indicus) Of Different Ages, Kept in Reproduction Central. (2023). Global Journal of Medical Research, 23(G2), 1-7. https://doi.org/10.34257/GJMRGVOL23IS2PG1

References

E Ahmad, N Ahmad, Z Naseer, M Aleem, M Khan, M Ashiq, M Younis (2011) Relationship of age to body weight, scrotal circumference, testicular ultrasonograms, and semen quality in Sahiwal bulls. 43, 159-164.

Celeghini Arruda Rp, Alonso Ecc, Carvalho Ma, Hf, Oliveira Lz, J Nascimento, Silva Df, Affonso Fj, Lemes Km, Jaimes Jd (2011) Métodos de avaliação da morfologia e função espermática: momento atual e desafios futuros. 35, 145-151.

G Boe‐hansen, M Fortes, N Satake (2018) Morphological defects, sperm DNA integrity, and protamination of bovine spermatozoa. 6(4), 627-633.

Erik Blom, Aksel Birch-Andersen (1973) Ultrastructure of the Sterilizing 'Knobbed-Sperm' Defect in the Bull. 194(4832), 989-990.

V Fonseca, N Santos, P Malinski (1997) Classificação andrológica de touros zebus (Bos taurus indicus) com base no perímetro escrotal e características morfo-físicas do sêmen. 21(2), 36-39.

Triin Hallap, Margareta Håård, Ülle Jaakma, Birgitta Larsson, Heriberto Rodriguez‐martinez (2004) Variations in quality of frozen-thawed semen from Swedish Red and White AI sires at 1 and 4 years of age. 27(3), 166-171.

T Hallap, Ü Jaakma, H Rodriguez‐martinez (2006) Changes in Semen Quality in Estonian Holstein AI Bulls at 3, 5 and 7 years of Age. 41(3), 214-218.

Manual Para Exame Andrológico E Avaliação De Sêmen Animal (2013) Colégio Brasileiro de Reprodução Animal. 3.

I Majic-Balic, S Milinkovic-Tur, M Samardzija, S Vince (2012) Effect of age and environmental factors on semen quality, glutathione peroxidase activity and oxidative parameters in simmental bulls. 78(2), 423-431.

Miranda, T Neto, E Castilho, R Pinho, S Guimarães, E Costa, Guimarães Guimarães, J Maturação sexual e parâmetros reprodutivos em touros da raça Nelore criados em sistema extensivo.

S (2010) Unknown Title. 39, 503-511.

C Staub, L Johnson (2018) Review: Spermatogenesis in the bull. 12, s27-s35.

J Sullivan (1970) Sperm numbers required for optimum breeding efficiency in cattle. 3, 36-43.

R; Valentim, R Arruda, M Alencar, R Barnabe (2002) Biometria testicular de touros nelore (bos taurus indicus) e touros cruzados nelore-europeu (bos taurus indicus x bos taurus taurus) aos 20 e 24 meses de idade. 39(3), 113-120.

Published

2023-12-26

How to Cite

Andrological Points Classification (CAP) Nelore Bulls (Bos Taurus Indicus) Of Different Ages, Kept in Reproduction Central. (2023). Global Journal of Medical Research, 23(G2), 1-7. https://doi.org/10.34257/GJMRGVOL23IS2PG1