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Authors
Abstract(s)
A utilização de técnicas de inseminação artificial e sincronização de cios na
produção de caprinos se torna uma estratégia capaz de assegurar um maior controlo
reprodutivo, possibilitando a produtores transporem a barreira da sazonalidade
reprodutiva em seu efectivo. O presente trabalho foi executado nas Quintas do Pinheiro
Manso e de Santa Apolónia, do IPB-ESA (Bragança), sendo utilizadas 55 cabras da raça
Serrana, ecótipo Transmontano e 10 cabras da raça Preta de Montesinho. O ensaio
experimental consistiu na aplicação de suplementação vitamínica, tratamentos
progestagénicos curtos+gonadotropinas coriónicas, processos de preservação de sémen,
e avaliação de alguns parâmetros no momento da IA – tipos de Os externos, cor e
lubrificação da mucosa da vagina, viscosidade do muco cervical, local de deposição do
sémen, refluxo cervical e inseminador. Estes factores então foram analisados quanto os
seus efeitos sobre a taxa de fertilidade das cabras. O diagnóstico de gestação decorreu
aos 41 dias pós-IA. Os tratamentos progestagénicos curtos + gonadotropinas coriónicas
aplicados obtiveram respostas ováricas de 98,2% das Serranas e 100% das Pretas de
Montesinho. O diagnótico de gestação constatou que 60% das Pretas de Montesinho e
69,1% das Serranas estavam gestantes. A taxa de fertilidade das cabras Serranas foi
influenciada pela suplementação vitamínica, pelo bode doador de sémen, pelo tipo de
Os externo, pela cor e lubrificação da mucosa vaginal, pelo local de deposição do sémen
e pelo refluxo cervical. Nas cabras Pretas de Montesinho, o local de deposição do
sémen, o refluxo cervical e, particularmente, as competências técnicas do inseminador
foram os factores que condicionaram significativamente a taxa de fertilidade.
The use of artificial insemination and synchronization of estrus techniques in caprine production becomes a strategy capable of ensuring greater reproductive control, allowing producers to transpose the reproductive seasonality barrier into their herds. The present work was carried out in the Quintas do Pinheiro Manso and Santa Apolónia, IPB-ESA (Bragança), using 55 Serrana goats, Transmontano ecotype and 10 goats of the Preta de Montesinho breed. The experimental trial consisted in the application of vitamin supplementation, short progestogen treatments + chorionic gonadotrophins, semen preservation processes, and evaluation of some parameters at the time of AI - external types of Os, color and lubrication of the mucosa of the vagina, viscosity of the cervical mucus, place of semen deposition, cervical reflux and inseminator. These factors were then analyzed for their effects on the fertility rate of goats. The diagnosis of gestation occurred at 41 days post-AI. The short progestogen treatments + applied chorionic gonadotrophins obtained ovarian responses of 98.2% of the Serranas and 100% of the Pretas de Montesinho. The diagnosis of gestation found that 60% of the Preta de Montesinho and 69.1% of the Serranas were pregnant. The fertility rate of the Serranas goats was influenced by the vitamin supplementation, by the semen donor goat, by the external type of Os, by the color and lubrication of the vaginal mucosa, by the place of deposition of the semen and by the cervical reflux. In the Preta de Montesinho, the place of deposition of the semen, the cervical reflux, and particularly the technical skills of the inseminator were the factors that significantly conditioned the fertility rate.
The use of artificial insemination and synchronization of estrus techniques in caprine production becomes a strategy capable of ensuring greater reproductive control, allowing producers to transpose the reproductive seasonality barrier into their herds. The present work was carried out in the Quintas do Pinheiro Manso and Santa Apolónia, IPB-ESA (Bragança), using 55 Serrana goats, Transmontano ecotype and 10 goats of the Preta de Montesinho breed. The experimental trial consisted in the application of vitamin supplementation, short progestogen treatments + chorionic gonadotrophins, semen preservation processes, and evaluation of some parameters at the time of AI - external types of Os, color and lubrication of the mucosa of the vagina, viscosity of the cervical mucus, place of semen deposition, cervical reflux and inseminator. These factors were then analyzed for their effects on the fertility rate of goats. The diagnosis of gestation occurred at 41 days post-AI. The short progestogen treatments + applied chorionic gonadotrophins obtained ovarian responses of 98.2% of the Serranas and 100% of the Pretas de Montesinho. The diagnosis of gestation found that 60% of the Preta de Montesinho and 69.1% of the Serranas were pregnant. The fertility rate of the Serranas goats was influenced by the vitamin supplementation, by the semen donor goat, by the external type of Os, by the color and lubrication of the vaginal mucosa, by the place of deposition of the semen and by the cervical reflux. In the Preta de Montesinho, the place of deposition of the semen, the cervical reflux, and particularly the technical skills of the inseminator were the factors that significantly conditioned the fertility rate.
Description
Dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Keywords
Raças autóctones Tratamentos progestagénicos Inseminação artificial Cabras Taxa de fertilidade