Banca de DEFESA: FÁBIO DA COSTA MÁLAGA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FÁBIO DA COSTA MÁLAGA
DATA : 26/07/2019
HORA: 13:00
LOCAL: Sala de Reuniões – Embrapa Suínos e Aves - Concórdia-SC.
TÍTULO:

Evaluation of in vivo and in vitro fertility parameters of Landrace breed

PALAVRAS-CHAVES:

 

Evaluation of in vivo and in vitro fertility parameters of Landrace breed

PÁGINAS: 45
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

In modern swine breeding, some parameters of production play a fundamental role, among them we can highlight the reproductive efficiency and the impact of having males that have a good fertility. The objective of this work was to analyze the fertility of Landrace breed, through the farrowing rate (FR) and total number of piglets born (TNB) and the relationship with the data obtained in the Genetic Diffusion Unit (UDG) through the CASA system. The study was carried out in a farm core of Landrace females located in Chapecó - SC, the semen doses were from a UDG in Guarapuava - PR. All inseminations were homospermic with intra-cervical deposition at the concentration of three billion mobile spermatozoa per inseminating dose and conditioned between 15-18ºC. We analyzed a period of 24 months and considered only males that had at least 20 females inseminated. In the period there were 1506 females inseminated and 1405 births. For seminal quality, the characteristics of motility, concentration and spermatic pathology were evaluated by the CASA system in natura and after 96 h, the doses were maintained at a temperature of 17 ° C. The laboratory results were included in the analysis to determine the impact on the reproductive potential of the ejaculates of these males. It was verified the existence of individuals who presented high and low fertility. Male FV00103520 presented FR of 94.73 ± 5.26 while NVSG5945 presented a FR 56.66 ± 9.2 (P <0.05). As for the TNB the individual FV00043961 presented 15.52 ± 0.69 while the NVSG5945 5.82 ± 0.73 (P <0.05). Conclusions Low-fertility males bring great impact to the production system. Therefore, working with data from UDGs and even retroactive numbers from farms provides valuable information for making decisions about when to remove an animal from reproduction, as well as to increase the database for geneticists to make their decisions during the animal breeding process of this breed / lineage.

MEMBROS DA BANCA:
Presidente - 2648941 - IVAN BIANCHI
Externo ao Programa - 1849719 - JUAHIL MARTINS DE OLIVEIRA JUNIOR
Externa à Instituição - MARIANA GROKE MARQUES
Externo à Instituição - PAULO EDUARDO BENNEMANN