Banca de DEFESA: Fernando Luiz Silva

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : Fernando Luiz Silva
DATA : 22/03/2024
HORA: 07:00
LOCAL: Sala virtual do google meet
TÍTULO:

TRACE ELEMENTS IN BEEF CATLE LIVESTOCK  IN THE AMAZON: AN APPROACH THROUGH THE ONE HEALTH PERSPECTIVE

PALAVRAS-CHAVES:

micronutrients, potentially toxic elements, good agricultural practices, food security

PÁGINAS: 147
GRANDE ÁREA: Outra
ÁREA: Ciências Ambientais
RESUMO:

Environmental, animal and human health have been threatened by global environmental changes, which have intensified through population growth and current development models. There are uncertainties about the levels of impact of these changes on the environment and production systems and their consequences for animal welfare and public health, especially on the agricultural frontier that advances into the Amazon. The Amazon has undergone profound changes in land use since the 1970s with artisanal gold mining, the conversion of millions of hectares of forests into pasture, and more recently a rapid process of intensification of land use through agriculture and livestock. Therefore, the investigation of the transfer of trace elements from the environment to animals and food is preponderant to assess environmental health and provide strategies to guide towards sustainability in the short, medium or long term. In addition, taking into account that beef cattle occupy a large part of the land in the Amazon, they can also serve as bioindicators of possible environmental contamination, for example in relation to the proximity of farms with artisanal gold mining. In view of this, this research investigates the levels of trace elements in soils in preserved areas of the State of Mato Grosso and in beef cattle farms in the southern Amazon to evaluate the possible relationship between the environment and cattle breeding with the levels of Fe, Mn, Zn, Cu, Co, Mo, Se, Cr, Ni, Pb, Cd, As and Hg. Soil, forage, mineral supplement, protein supplement and bovine blood samples were obtained from the farms. Bovine muscle, liver and kidney samples were obtained from the market in this region. The results are organized into six articles. The first article is a literature review of the last two decades and analyzes the scientific advances resulting from research related to trace elements in beef cattle, seeking to understand how these researches interact with human and environmental health. The second article proposes an approximation for establishing reference values of trace elements for soils in Mato Grosso based on analyzes of soil samples from preserved areas in the main regions of the State. The third article compares soil fertility and carbon stocks in pastures and native forests on eight farms in southern Amazonia and discusses strategies for the sustainability of these pastures. The fourth article discusses the relationship between levels of trace elements in soil and forage. The fifth article presents the levels of trace elements in feed and blood of beef cattle to assess the animal nutritional status and management of these herds. The sixth article presents the levels of trace elements in bovine meat, liver and kidney obtained in the market.

MEMBROS DA BANCA:
Interno - 80797005 - CARLA GALBIATI
Externo à Instituição - JOANIS TILEMAHOSZERVOUDAKIS - UFMT
Interno - 52857001 - JULIANO ANDRE BOGONI
Externo ao Programa - 131935001 - LUIZ JULIANO VALERIO GERON
Externo à Instituição - LUIZ ROBERTO GUIMARAES GUILHERME - UFLA
Interno - 110049004 - MARIA APARECIDA PEREIRA PIERANGELI