AÇAFRÃO EM PÓ (Curcuma longa L.) EM DIETAS DE FRANGOS DE CORTE

Objetivou-se avaliar os efeitos da inclusão de diferentes níveis de açafrão em pó (Curcuma longa L.) na ração de frangos de corte em comparação ao antibiótico promotor de crescimento. Foram utilizados 720 pintos de corte de 1 dia, da linhagem Cobb, distribuídos em delineamento inteiramente casualizado, em arranjo fatorial 5x2 (cinco tratamentos e dois sexos), com quatro repetições e 18 aves por unidade experimental. Os tratamentos foram: ração basal (RB) + 150 g/kg de bacitracina de zinco, RB sem aditivos, RB + 3,3 g/kg de açafrão, RB + 6,6 g/kg de açafrão e RB + 10 g/kg de açafrão. Avaliou-se o desempenho (peso vivo, consumo de ração, ganho de peso, conversão alimentar e mortalidade), rendimento de carcaça, peso relativo de vísceras e a rentabilidade econômica. Os dados obtidos foram submetidos à ANOVA e as médias dos tratamentos submetidas à análise de regressão e teste de Dunett a 5%. As aves alimentadas com açafrão não apresentaram diferenças entre as variáveis de desempenho, rendimento de carcaça e peso relativo de vísceras, quando comparadas às aves suplementadas ou não com antibiótico. A inclusão de 3,3 g/kg de açafrão apresentou índice de rentabilidade semelhante ao tratamento RB + 150 g/kg de bacitracina de zinco. Portanto, a suplementação de açafrão em pó na dieta de frangos de corte tem ação no desempenho produtivo, no rendimento de carcaça e de cortes nobres, peso relativo de vísceras e comprimento de intestinos das aves semelhante ao antibiótico promotor de crescimento, sendo o nível 3,3 g/kg o que apresenta a melhor rentabilidade econômica

Performance of Cowpea under Different Water Regimes in Amazonian Conditions

Water availability is a crucial factor in the final productivity of cowpea. The objective of this work was to evaluate the production and productivity components of cowpea under different irrigation depths in Amazonian conditions. The experiment was carried out at the School Farm of the Federal Rural University of Amazonia, in the municipality of Castanhal-PA, using the cultivar BR3 Tracuateua, from September to November 2014, 2015, and 2016. The experimental design was conducted on six blocks and four treatments, where the four irrigation depths of 0, 25, 50, and 100% of crop evapotranspiration were tested. The productivity analysis was performed when 90% of the plants were in the phenological stage R9. The evaluated production components were pod length, number of pods per plant, number of grains per pod, mass of one hundred grains, and harvest index. There was a statistical difference among all treatments for the components of production and among productivities. An average reduction of 827 kg ha−1 in cowpea productivity was observed during the three years of study, when the treatment without irrigation was compared with the treatment irrigated with 100% of the crop’s water demand. It was found in this research that the simple fulfillment of the nutritional and phytosanitary demands of the crop, associated with an adequate planning of when to plant in the region, would already help in the improvement of local production when choosing times where the water deficit in the reproductive phase is less than 33 mm

Performance of Cowpea under Different Water Regimes in Amazonian Conditions

Water availability is a crucial factor in the final productivity of cowpea. The objective of this work was to evaluate the production and productivity components of cowpea under different irrigation depths in Amazonian conditions. The experiment was carried out at the School Farm of the Federal Rural University of Amazonia, in the municipality of Castanhal-PA, using the cultivar BR3 Tracuateua, from September to November 2014, 2015, and 2016. The experimental design was conducted on six blocks and four treatments, where the four irrigation depths of 0, 25, 50, and 100% of crop evapotranspiration were tested. The productivity analysis was performed when 90% of the plants were in the phenological stage R9. The evaluated production components were pod length, number of pods per plant, number of grains per pod, mass of one hundred grains, and harvest index. There was a statistical difference among all treatments for the components of production and among productivities. An average reduction of 827 kg ha−1 in cowpea productivity was observed during the three years of study, when the treatment without irrigation was compared with the treatment irrigated with 100% of the crop’s water demand. It was found in this research that the simple fulfillment of the nutritional and phytosanitary demands of the crop, associated with an adequate planning of when to plant in the region, would already help in the improvement of local production when choosing times where the water deficit in the reproductive phase is less than 33 mm