Título :	Relações entre características adaptativas, qualidade espermática e perfil proteico do plasma seminal de touros adaptados à região subtropical
Otros títulos :	Relationship between adaptability, sperm quality and protein profile of the seminal plasma of bulls adapted to subtropical region
Autor :	Souto, Paula Lorena Grangeira
Orientador(es)::	Ramos, Alexandre Floriani
Coorientador(es)::	Pimentel, Concepta Margaret McManus
Assunto::	Sêmen - qualidade Sêmen bovino Conforto térmico Mudanças climáticas
Fecha de publicación :	23-ago-2018
Data de defesa::	27-feb-2018
Citación :	SOUTO, Paula Lorena Grangeira. Relações entre características adaptativas, qualidade espermática e perfil proteico do plasma seminal de touros adaptados à região subtropical. 2018. xviii, 113 f., il. Tese (Doutorado em Saúde Animal)—Universidade de Brasília, Brasília, 2018.
Abstract:	This study aimed to compare the semen quality of locally adapted bulls with bulls of a commercial breed raised at Southern Highlands of Santa Catarina, as well as, to analyse the relationships with climate adaptation. Characteristics of the external morphology of the animals, physiological responses and proteins in the seminal plasma were investigated in summer and in winter. Semen samples were obtained three times in each season, from all bulls, and analysed for sperm motility, vigor, number of sperm per millilitre, sperm membrane status and sperm defects. Seminal plasma was obtained by centrifugation and the proteins identified by shotgun proteomics. Environmental data, such as air temperature, air humidity, black globe temperature (BGT), temperature humidity index (THI) and thermal comfort indexes were obtained. Climate conditions differed significantly between seasons. Chapter 2 unveiled that the semen quality of Crioulo Lageano and Angus bulls was similar and satisfactory across the year. Air temperature, BGT and THI were considered the most important factors that could affect seminal traits. In Chapter 3, it was possible to conclude that the bulls experienced moderate heat stress in summer, which led to significant physiological responses, but they were able to maintain normothermia, showing good adaptation to the climate conditions at the region studied. External morphological characteristics were highly important to explain physiological responses in summer, whereas in winter the climatic features prevailed. In Chapter 4, it was determined that season and breed influenced on the abundance of the proteins in seminal plasma. We suggest that the differentially abundant proteins are part of a range of mechanisms that participate in climate adaptation and homeostasis maintenance of the sires. This study contributes to the knowledge about the male physiology in locally adapted cattle and argues in favour of the use of them in the livestock breeding systems.
metadata.dc.description.unidade:	Faculdade de Agronomia e Medicina Veterinária (FAV)
Descripción :	Tese (doutorado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, 2018.
metadata.dc.description.ppg:	Programa de Pós-Graduação em Saúde Animal
Licença::	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições: Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
Aparece en las colecciones:	Teses, dissertações e produtos pós-doutorado

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