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Effect of GnRH on scrotal surface temperature, testicular volume and spern parameters of bulls with poor semen quality. Author(s): ROMANELLO, N.; BOTTA, D.; MOURA, A. B. B.; PANTOJA, M. H. de A.; BARRETO, A. do N.; SOUZA, M. A. de P.; VOLANTE, C. A.; GARCIA, A. R. Spermatogenesis is coordinated by the hypothalamic-pituitary-gonadal axis, mainly by GnRH secretion. Repository: BDPA Publication year: 2018
Evaluation of the proteomic profiles of ejaculated spermatozoa from Saanen bucks (Capra hircus). Author(s): ELOY, A. M. X. Abstract: The Saanen goat breed has been widely explored in breeding programmes; however, there are few reports about the breed?s genetic and molecular composition. Thus, this study aimed to character... ... Repository: BDPA Publication year: 2019
Desenvolvimento gonadal de pirarucu no primeiro ano de vida. Author(s): PEREIRA, A. S.; LIMA, A. F.; KIRSCHNIK, L. N. G.; KIRSCHNIK, P. G. O objetivo do estudo foi caracterizar o desenvolvimento gonadal do pirarucu no primeiro ano de vida, por meio de análises histológicas. Dez exemplares foram aleatoriamente selecionados para cada class... ... Repository: BDPA Publication year: 2018
Caracterização genética de bovinos por meio de estudos de cromossomo Y e do DNA mitocondrial. Author(s): JORGE, W.; ISSA, E. C.; SERENO, F. T. P. de S.; SERENO, J. R. B. ABSTRACT: Domestic cattle breeds are classified in two subspecies: Bos taurus taurus, which have an european origin and Bos taurus indicus, the zebuines, originated in India. The main phenotypic diffe... ... Repository: BDPA Publication year: 2006
Cronologia da incidência de anomalias morfológicas espermáticas em touros búfalos (Bubalus bubalis) sob estresse térmico de curta duração. Author(s): GONÇALVES, A. A.; GARCIA, A. R.; CRUZ, G. S. DA; SANTOS, S. DO S. D.; OHASHI, O. M. The study aimed to evaluate the effect of short-term heat stress on sperm morphology, relating them to the stages of spermatogenesis. Adult buffalo bulls underwent scrotal insulation (day 0; 48 hours)... ... Repository: BDPA Publication year: 2021
Testicular Histomorphometric Evaluation of Zebu Bull Breeds. Author(s): SILVA, J. C. B. The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5... ... Repository: BDPA Publication year: 2014
A Non-synonymous point mutation in a WD-40 domain repeat of EML5 leads to decreased bovine sperm quality and fertility. Author(s): NOGUEIRA, E. This study is part of a concerted effort to identify and phenotype rare, deleterious mutations that adversely affect sperm quality, or convey high developmental and fertility potential to embryos and... ... Repository: BDPA Publication year: 2022
Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams. Author(s): MOLINA, J. C. J.; SILVA, R. S. da; BIDEGAIN, F. A.; SOUZA, Y. B.; PURDY, P. H.; BLACKBURN, H. D.; AZEVEDO, H. C. This study evaluated relationships among reproductive parameters and the bioclimatic indices: temperature and humidity index (THI), equivalent temperature index (ETI), black globe temperature and humi... ... Repository: BDPA Publication year: 2023
Meiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auschenorrhyncha). Author(s): VALERIO, J. R.; BARBOSA, L. R. Spittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage pr... ... Repository: BDPA Publication year: 2010
Produção de sêmen e aptidão reprodutiva em carneiros jovens. Author(s): MORAES, J. C. F. O presente trabalho apresenta uma reanálise num conjunto de dados colhidos em um experimento planejado para estudar o desenvolvimento testicular e a produção de sêmen de carneiros jovens acima da médi... ... Repository: BDPA Publication year: 2025

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