Publications by authors named "Leonel Antonio Joaquim"

Article Synopsis
  • The study focuses on evaluating cattle reactivity and distress during corral management using behavioral indicators to improve animal comfort and well-being through standardized, non-invasive methods.
  • Conducted in Mojuí dos Campos during the rainy season, the experiment involved 30 healthy male cattle divided into three different rearing systems: silvopastoral, traditional, and integrated.
  • Key findings indicated that while there was little difference in behavior across the systems, the traditional system showed significantly different escape speed compared to the others, and a positive correlation was found between certain physiological parameters and behavioral scores.
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The objective of this study was to evaluate the thermal comfort of Nelore cattle () managed in silvopastoral and traditional systems associated with rumination behavior in a humid tropical environment in the Eastern Amazon, Brazil. The study was carried out on a rural property in Mojuí dos Campos, Pará, Brazil, during the transition period of the year, from June to July 2023. Over these two months, six consecutive data collection days were held.

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The Angoni cattle breed's contribution to the country's economy is crucial, as it significantly contributes to animal draught power and meat supply, despite not being primarily used for milk production. Despite its importance, there is a lack of comprehensive research conducted to characterize this breed. This study aimed to investigate the impact of the generation interval (GI) and season of birth (SB) on key reproductive parameters, including age at first calving (AFC), birth weight (BW), and calving interval (CI) in angoni cattle.

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The represents a substantial threat to pastures, affecting the availability of water, forage and compromising the sustainability of grazing areas, especially in the northern region of Brazil. Therefore, the objective of this study was to characterize the thermographic profile of three production systems in the Eastern Amazon, Brazil. The study was conducted on a rural cattle farm in Mojuí dos Campos, Pará, Brazil, between August and November 2023.

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Background And Aim: Wheat bran (WB) is used extensively in animal feed. Despite its nutritional value, its use is limited because of its high-fiber content. We evaluated the effect of soybean oil on laying hen performance with maize meal partly replaced by WB.

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