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    Caracterização e dinâmica do rebanho bovino na mesorregião Norte Pioneiro Paranaense
    (Universidade Estadual do Norte do Paraná, 2020) Vicentin, Guilherme Rosalem; Silva, Marcelo Alves da; http://lattes.cnpq.br/3283906522734749; Barreiros, Thales Ricardo Rigo; https://orcid.org/0000-0001-8735-5901; http://lattes.cnpq.br/5374406053323863; Prohmann, Paulo Emílio Fernandes; http://lattes.cnpq.br/1777074807269801; Porto, Petrônio Pinheiro; https://orcid.org/0000-0002-2999-7612; http://lattes.cnpq.br/1751366795715746; Nubiato, Keni Eduardo Zanoni; https://orcid.org/0000-0001-8957-5457; http://lattes.cnpq.br/7558533573494842; Bona Filho, Amadeu; http://lattes.cnpq.br/2447868844127977
    The objective of this study was to survey the structure of the bovine herd and the resulting characterization and dynamics of the Paraná herd and the Norte Pioneiro Mesoregion. This survey was based on the official communication by producers to ADAPAR during the vaccination campaign against foot-and-mouth disease, in the months of November of the years 2006, 2016, 2017, and 2018, stratified by sex and age (0 to 12 months, 12 to 24 months, 24 to 36 months, over 36 months), culminating in general, State, Mesoregion, and Regional herd data. In addition, these data were compared with data obtained from IBGE in the years 2006 and 2017, from the agricultural census, on total herd and land use. Both Regionals and, consequently, the Mesoregion were characterized by not having specific breeding activity, with municipalities that stood out for breeding and others for finishing. It was evident that Paraná showed a decrease of 8% of its herd and 15% of pasture areas, but there was an increase in stocking rate from 1.93 to 2.09 heads/ha. A similar trend occurred in the Jacarezinho Regional, which also decreased pasture and herd, with stocking rate increasing from 1.64 to 1.70; in contrast, the Cornélio Procópio Regional, besides reducing pasture and herd, showed a decrease in stocking rate from 1.63 to 1.57. It was observed that the Cornélio Procópio Regional presented better results for the slaughter of young animals, above the average of the Mesoregion and State; in contrast, the Jacarezinho Regional presented late finishing. There was proximity between the slaughter estimates from animals that left the herd, based on foot-and-mouth disease vaccination records, and official data obtained from GTA for slaughter. It can be concluded that the Mesoregion has municipalities with potential for breeding and others for finishing, making it clear that there is no specificity in relation to breeding activity. In general, there was a decrease in pasture areas and in the herd, but growth in the stocking rate, demonstrating increased efficiency over the years. The Cornélio Procópio Regional revealed greater efficiency in animal finishing, with younger age at slaughter, above the percentages of the State and Mesoregion. Efficiency in calf production is low, with a need for improvement.