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Vitória da Conquista, Brazil

de Oliveira J.B.,Pos Graduacao em Zootecnia | Pires A.J.V.,DTRA UESB | Pires A.J.V.,Brazilian National Council for Scientific and Technological Development | de Carvalho G.G.P.,Federal University of Bahia | And 4 more authors.
Revista Brasileira de Zootecnia | Year: 2010

The experiment was carried out to evaluate the intake, apparent digestibility and the milk yield of goats fed elephant grass silages containing industrial by-products. Eight Saanen breed goats were used, distributed in two 4 × 4 Latin squares, with four 14-day periods (ten days of adaptation and four days for data collection). The treatments were: elephant grass silage + concentrate; elephant grass silage containing 15% cassava meal + concentrate; elephant grass silage containing 15% coffee hulls + concentrate; elephant grass silage containing 15% cocoa meal + concentrate. The greatest intakes of dry matter (DM), organic matter (OM), total carbohydrates (TC), nonfiber carbohydrate (NFC) and digestible total nutrients were observed in the animals fed silage containing cassava meal. The greatest intake of ether extract was verified in the silages with cassava meal or coffee hulls. The greatest digestibility values of the DM, OM, EE and TC were obtained in the diet containing elephant grass silage with cassava meal. The NFC digestibility value was similar among diets containing elephant grass silage with cassava meal, coffee hulls and cocoa meal. The neutral detergent fiber and acid detergent fiber digestibility was greater in the silage without additive, with cassava meal or cocoa meal. Greater intake, digestibility coefficients and milk yield were obtained in goats fed elephant grass silage containing cassava meal. © 2010 Sociedade Brasileira de Zootecnia.

Argolo L.S.,Zootecnia UESB | Pereira M.L.A.,DEBI UESB | Dias J.C.T.,State University of Santa Cruz | da Cruz J.F.,DFZ UESB | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2010

The objective of this study was to evaluate the effect of adding mesquite pod meal (0, 33.3, 66.7 and 100%) to substitute corn meal on purin derivative the excretion, estimated by total urine collection, and on the ruminal parameters (pH, ammonia and volatile fatty acids). Eight lactating goats were used and distributed in a 4 × 4 Latin square and fed iso-protein diets consisting of 40% elephant grass silage and 60% concentrate. There was no significant effect from adding mesquite pod meal on the ruminal parameters. The pH ranged from 6.85 to 7.03 and the ruminal ammonia concentration averaged 6.97 mg/100 mL. The acetate and propionate concentrations ranged from 9.47 to 10.54 and 4.79 to 6.58 mM, respectively. The excretion (mmol/day) of allantoin, uric acid and xanthine-hypoxanthine, the quantity of absorbed purines, the nitrogen microbial intestinal flow (g/day), microbial nitrogen synthesis (g/day) and efficiency of microbial protein synthesis efficiency, expressed in g of microbial crude protein/kg of the total digestible nutrients, presented linear negative response to corn replacement with mesquite pod meal. Microbial synthesis in goats must be estimated by the purine derivatives excretion using equations obtained from goats. © 2010 Sociedade Brasileira de Zootecnia.

de Oliveira L.B.,Mestrando em Agronomia | Pires A.J.V.,DTRA UESB | Viana A.E.S.,DFZ UESB | Matsumoto S.N.,DFZ UESB | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2010

The objective of this work was to evaluate nutrient production and extraction of different forages. Four crops were implanted: corn, Sudan sorghum, forage sorghum and sunflower in an experimental design in randomized blocks, with four treatments and five repetitions. Sunflower and Sudan sorghum had the highest green matter production, while corn and sorghum forages excelled over the other crops for dry matter production. The highest values of fibrous fraction were observed for Sudam sorghum. Sunflower crop extracted the highest amount of calcium, potassium and magnesium, while Sudan sorghum showed the highest phosphorus extraction. Extraction of nitrogen and sodium was not different among crops. Corn is the best forage for silage because it has the highest ear proportion in relation to the rest of the plant. © 2010 Sociedade Brasileira de Zootecnia.

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