2 research outputs found
Responses of Panicum and Brachiaria to irrigation during winter in the Goiás’ Cerrado-Brazil
Forage production in the Cerrado is based on well-defined seasons: a rainy summer, and a dry winter. To define strategies that minimize the seasonality of forage production, responses in growth and biomass accumulation of five irrigated forages were evaluated during winter. The experimental design was randomized blocks, in a split plot arrangement, with five replicates, five forages in the plots (three of Panicum maximum - Mombasa, Tanzania, and Masai; two of Brachiaria brizantha - piatã and MG5), and five cuts in the subplots made from July to October 2016. Forages were cultivated with centre-pivot irrigation and the water level was defined according to the reference evapotranspiration determined through a Class A pan evaporation method, 0.8 kc, and two-day irrigation shifts. The number of shoots, leaves/tiller, leaves/plant, fresh leaf and stem biomass, dry leaf and stem biomass, fresh leaf mass/fresh stem mass ratio, dry leaf mass/dry stem mass ratio, and biomass accumulated in the five cuts were calculated. Irrigated forage during winter in the Goiás’ Cerrado showed satisfactory growth, reaching a lower plant height between cuts than those reported in the literature. Among the Panicum grasses, Mombasa grass stood out, and MG was superior to piatã grass.
Highlights
The forages Panicum maximum - Mombasa, Tanzania, and Masai -; and Brachiaria brizantha - piatã and MG5 -, presented satisfactory responses in growth and biomass accumulation in an irrigated culture during winter in the Goiás’ Cerrado.
The Mombasa grass stood out among the forage of the genus Panicum and MG5 in the Brachiaria.
The Mombasa and Brachiaria MG5 grasses are recommended for cultivation of irrigated forage during the winter in the Goiás’ Cerrado.Forage production in the Cerrado is based on well-defined seasons: a rainy summer, and a dry winter. To define strategies that minimize the seasonality of forage production, responses in growth and biomass accumulation of five irrigated forages were evaluated during winter. The experimental design was randomized blocks, in a split plot arrangement, with five replicates, five forages in the plots (three of Panicum maximum - Mombasa, Tanzania, and Masai; two of Brachiaria brizantha - piatã and MG5), and five cuts in the subplots made from July to October 2016. Forages were cultivated with centre-pivot irrigation and the water level was defined according to the reference evapotranspiration determined through a Class A pan evaporation method, 0.8 kc, and two-day irrigation shifts. The number of shoots, leaves/tiller, leaves/plant, fresh leaf and stem biomass, dry leaf and stem biomass, fresh leaf mass/fresh stem mass ratio, dry leaf mass/dry stem mass ratio, and biomass accumulated in the five cuts were calculated. Irrigated forage during winter in the Goiás’ Cerrado showed satisfactory growth, reaching a lower plant height between cuts than those reported in the literature. Among the Panicum grasses, Mombasa grass stood out, and MG was superior to piatã grass.
Highlights
The forages Panicum maximum - Mombasa, Tanzania, and Masai -; and Brachiaria brizantha - piatã and MG5 -, presented satisfactory responses in growth and biomass accumulation in an irrigated culture during winter in the Goiás’ Cerrado.
The Mombasa grass stood out among the forage of the genus Panicum and MG5 in the Brachiaria.
The Mombasa and Brachiaria MG5 grasses are recommended for cultivation of irrigated forage during the winter in the Goiás’ Cerrado
Avaliação do crescimento e desempenho de diferentes linhagens de frango caipira melhorado na região de goianésia Goiás
Dentro da avicultura um dos segmentos que tem apresentado maior crescimento, é a criação de aves para a produção de carne tipo caipira, que visa atender a um grupo mais exigente de consumidores. Esse crescimento proporcionou um aumento da produção de aves criadas em sistemas alternativos nos últimos anos. E visa conseguir atender aos interesses dos consumidores que buscam por carnes com caracterÃsticas diferenciadas das aves criadas convencionalmente. Objetivou-se com a pesquisa comparar o potencial de crescimento e o desempenho zootécnico com ênfase na conversão alimentar de quatro linhagens de frangos, para produção de carne tipo caipira, sendo as raças Carijó (CA), Mesclado (MS), Pescoço Pelado (PP) e Pesadão (PS). O delineamento experimental utilizado foi em blocos casualizados com parcelas subdivivdidas, sendo 4 tratamentos e cinco repetições. O experimento foi conduzidos em galpão convencional com as medidas de 15m X 6m, com o solo coberto com cama vegetal, composta com casca de arroz na espessura de 10 cm de altura. Observou o resultado que a raça Pescoço Pelado (PP) obteve uma melhor conversão alimentar e melhor adaptabilidade ao ambiente