Produção animal, produção e qualidade da forragem em pastagem de coastcross consorciada com amendoim forrageiro, em pastejo

• Ano de defesa: 2008
• Autor(a) principal: Barbero, Leandro Martins
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual de Maringá; Brasil; Programa de Pós-Graduação em Zootecnia; UEM; Maringá, PR; Centro de Ciências Agrárias
• Palavras-chave em Português: Forragicultura; Desempenho animal; Pastagem; Produção animal; Valor nutritivo; Leguminosas; Composição química; Brasil.; Forage; Animal performance; Pasture; Animal production; Nutritional value; Legumes; Chemical composition; Brazil.; Ciências Agrárias; Zootecnia
• Link de acesso: http://repositorio.uem.br:8080/jspui/handle/1/1799

The experiment was carried out in IAPAR in Paranavaí-PR, from July 2006 to June 2007, in an area with five years of use and in a deterioration state. It was used an experimental design of random blocks with split plot in time, with two replications using the treatments: Coastcross + Forage peanut + 200 kg / ha of N; Coastcross + Forage peanut + 100 kg / ha of N; Coastcross + 200 kg / ha of N and Coastcross + Forage peanut in the year seasons of: winter, spring, summer and autumn. To estimate the availability and forage mass production it was used the double sampling and the triple pairing methods, respectively, each 28 days. In the treatments there were evaluated the proportions of grass, legumes, invasive plants, uncovered soil and litter. The pasture was maintained at an average height of 17 cm. It was made the botanical separation of leaf blade, sheath + stem and dead material from samples collected randomly in the pastures and determining, with the exception of dead material, the quality of the forage (CP, NDF and IVDMD). It was used cross heifers (Zebu x European) with live initial weight of 170kg, and managed in continuous stocking and variable animal load. Animal production was evaluated through the average daily gain (ADG) live weight gain per ha (LWG), Income in arrobas (@ / ha), stocking rate (SR) and number of animals per day (NAD). The weightings were done at intervals of 28 days. For the Forage peanut mass the pasture without fertilization presented the best result. The forage production was higher in pastures submitted to treatment with 200 kg of N / ha followed by the one fertilized with 100 kg of N / ha. The grass accumulation rate followed the same trend of forage production. There was no difference in uncovered soil, litter and uncovered area between treatments, but in the pasture submitted to the dose of 200 kg of N / ha without legume it was observed, during the year, a lower incidence of invasive plants. For the leaf/stem ratio, leaves mass and dead material mass there was no difference to treatment, but the pasture submitted to 200 kg of N / ha without legume had greater stems mass. There was no difference on the average daily gain of the animals submitted to different treatments. The stocking rate was higher in the pastures that received the highest nitrogen dose being lower in the one that did not receive the nutrient. The live weight gain was higher in areas with fertilization, and this behavior was also observed for number of animals per day and arrobas per hectare. As for the quality of the forage it was observed the lowest values for pastures that have not received the nitrogen fertilization.