Produção Animal
URI permanente para esta coleçãohttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/34
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Resultados da Pesquisa
Item Desenvolvimento e validação de dispositivo móvel para verificar o conforto térmico de aves de produção(Universidade Brasil, 2024) Tavares, Juliana Campos; Sgavioli, Sarah; Brennecke, KätheryIn poultry farming, thermal comfort is related to environmental conditions in commercial facilities, where ideal values ensure the development of the birds' maximum genetic potential, promoting performance and welfare. The aim of this study was to develop and validate a mobile device to measure environmental variables, calculate indices, classify the comfort of poultry production (broilers, commercial layers and breeders) at different ages and validate the device. The system was based on the development of a low-cost portable device to measure environmental variables such as dry-bulb tem perature, relative humidity, air velocity, black-bulb temperature and dew point, and to calculate thermal comfort indices. The environmental variables were collected using two mobile devices (a commercial one and the one developed in this project) to validate the equipment. The mobile device proved to be effective and was able to measure the variables, calculate the indices, evaluate the thermal comfort of the birds and propose management adjustments to optimize the environment of the facility according to the age and breed of the birds. In terms of validation, the device can be used to integrate the equations into the programming for adaptation. However, the device needs to be validated in future studies in terms of flight speed, carbon dioxide concentration and atmospheric pressure. The development of the low-cost mobile device can be consid ered as an alternative solution for the assessment and monitoring of thermal comfort in breeding birds, contributing to the performance and welfare of the animals and also allowing the environment of the facility to be adapted as required.Item Índices de conforto térmico em aves de produção: revisão sitemática(Universidade Brasil, 2021) Calderaro, Cristhiano Ferreira; Sgavioli, Sarah; Pereira, Luiz Arthur MaltaThe thermal comfort and ambience are subjects of study that aims to achieve animal well-being. There are several studies that cite thermal comfort indexes and variables suitable for poultry breeding, nevertheless, it was not found any survey per category, such as broiler chicken, layer hens and breeders. Considering this issue importance, the present study aimed to elaborate a systematic review on environmental variables and thermal comfort indexes for poultry (broiler chicken, layer hens and broiler breeders). This systematic review was accomplished through search and selection of complete papers published on scientific journals, within three digital data banks (Scopus, Scielo and PubMed) from a total of 20.148 selected papers, just 60 were included at this review data bank. The used criteria for papers selection were publications on national and international journals, and papers containing data regarding performance and environmental variables or thermal comfort indexes. The selected papers complete version was severely evaluated regarding its quality and relevance. In the data bank created for this review, the broiler chicken category contributed with 66.66% of the papers, layer hens appeared in 31.66% of the scientific reports, and broiler breeders in 1.6%. For the broiler chicken and layer hens categories, it was observed presence in 80% of international publications for the earlier, and 84.21% for the later. The temperature parameter was the environmental variable with most occurrence in the studies for all the considered categories. Within the 60 papers analyzed in this systematic review, only 20% of it calculated thermal comfort indexes. This leads us to conclude that, considering this study timeline, thermal comfort indexes for poultry, although present increasing research evolution, are tools that need to be more explored in studies aiming thermal comfort for poultry breeding.Item Índices de tolerância ao estresse térmico e características fisiológicas de cabras Saanen no Tocantins(Universidade Brasil, 2019) Moraes, Eder Brasil de; Bertipaglia, Liandra Maria AbakerItem Sazonalidade, índices reprodutivos e produtivos em vacas da raça holandesa no free-stall(Universidade Brasil, 2018) Tacon, Elder Prearo; Orlandi , Cassia Maria BarrosoItem Aplicativo de apoio ao produtor rural na construção da instalação para animais de produção(Universidade Brasil, 2018) Bardi, Cassia Cristina Tannuri Gomes; Pereira, Luiz Arthur Malta; Bertipaglia, Liandra Maria Abaker