Níveis de farelo de girassol e adição de complexo enzimático em rações para suínos e aves

• Ano de defesa: 2011
• Autor(a) principal: Araújo, Wagner Azis Garcia de
• Orientador(a): Albino, Luiz Fernando Teixeira
• Banca de defesa: Silva, Francisco Carlos de Oliveira , Hannas, Melissa Izabel
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Doutorado em Zootecnia
• Departamento: Genética e Melhoramento de Animais Domésticos; Nutrição e Alimentação Animal; Pastagens e Forragicul
• País: BR
• Palavras-chave em Português: Creatinina; Bovinos; Exigências
• Palavras-chave em Inglês: Creatinine; Cattle; Requirements
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
• Link de acesso: http://locus.ufv.br/handle/123456789/1785

Three experiments were performed in the Swine and Poultry Sector of the Department of Animal Science, Federal University of Viçosa, to verify the effects of increasing levels of sunflower meal (FG) and an enzyme complex (EC) in the diets of broilers and laying hens pigs on animal performance, carcass characteristics, egg component and economic viability. In the first experiment we used 1920 male Cobb broilers, from 21 to 42 days of age in a randomized complete block design in a factorial 4 x 3 scheme (four levels of FG on three disposition of the diets), with eight replications, where each box containing 20 birds was considered the experimental unit. The inclusion levels of FG were 0, 8, 16 and 24% used three different diets. The firsts were calculated to meet all nutritional requirements, except for the nutrients to be available by the array of nutritional EC considered the negative control (NC). The seconds diet was computed in the same way as the firsts, but with the addition of 0.005% of EC (EC + NC). The lasts diets were calculated to meet all requirements of animals, named as the positive control (PC). The addition of the EC in the diets of broilers did not affect the parameters of feed intake, weight gain, feed conversion and carcass parameters (P>0.05). Increased levels of FG in the diet worsened the parameters of weight gain and feed conversion (P<0.05). In other experiments we used a factorial 4 x 2 (four levels of FG with or without inclusion of the EC). The inclusion levels of FG were 0, 8, 16 and 24%, used in two different diets. The diets were formulated to meet all nutritional requirements, except for the nutrients to be available by the array of enzyme complex, with or without the use of EC. In the second experiment was used 384 animals, from the line Hy Line Brown distributed in a randomized block design with 8 replicates and six birds per replicate. There was no interaction between the addition of EC and FG levels in the diet (P>0.05). The addition of the enzyme complex in the diets of laying hens did not affect the production parameters and egg components (P>0.05). The increased levels of FG in the diet showed a quadratic effect on the posture and the conversion per dozen eggs (P<0.05), with ideal points for the inclusion of SM% and 6.72% respectively 5.83 for each parameter. In a third experiment was carried out 96 test pigs, males and females were distributed in randomized blocks with six repetitions and two animals per replicate. There was no interaction between the addition of EC and FG levels in the diet (P>0.05). The addition of the enzyme complex in the diets of pigs affected the productive (P>0.05), but not the carcass parameters (P<0.05). Feed conversion of the animals from 30 to 70kg weight was improved by the inclusion of EC (P>0.05). The increased levels of FG in the diet showed a quadratic effect on weight gain of animals from 70 to 100kg and the backfat thickness (P<0.05), points with the inclusion of the FG that provided maximum values of these parameters of 7.26% and 8.16% respectively. The FG affect the performance of broilers, and can be used to the level of 6.72% for laying hens and 7.26% for growing pigs.