DTRA UESB

Itapetininga, Brazil

DTRA UESB

Itapetininga, Brazil

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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.


Viana P.T.,UESB | Pires A.J.V.,DTRA UESB | de Oliveira L.,Programa de Pos Graduacao em Agronomia | de Carvalho G.G.P.,Federal University of Bahia | And 4 more authors.
Revista Brasileira de Zootecnia | Year: 2012

This experiment was conducted to characterize and quantify the fractions that make up the carbohydrate and protein in silages. The design was completely randomized with four replications and five treatments: corn silage (AG 5011), sorghumsudangrass silage, forage sorghum silage (BR 601) and sunflower silage (Rumbsol 91). Sunflower silage had the lowest value of total carbohydrates (TC) and B2 fraction (potentially degradable fraction of the fiber). Silages of corn, forage sorghum and sorghumsudangrass showed no difference in cholesterol levels. Fraction C (indigestible cell wall fraction) was higher in silages of sunflower and sorghum-sudangrass. There was no effect on the protein fraction (non-protein nitrogen) between silages. Sunflower silage showed higher crude protein and total nitrogen. No differences were found between the silages of maize and sorghum, and fraction C was smaller for the corn silage and forage sorghum. Silages of corn, forage sorghum and sorghum-sudangrass presented lower nutritional value due to the greater amount of cell wall and less energy, when compared with silages of corn and sunflower. © 2012 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.


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.


Santos-Cruz C.L.D.,DTRA UESB | Da Cruz C.A.C.,IFBaiano | Lima T.R.,UESB | Perez J.R.O.,UESB | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2012

The objective of this study was to establish a correlation between the content of total lipids, cholesterol and fatty acid profile of the edible portion of the shoulders of 12 castrated and 12 non-castrated Santa Ines lambs, slaughtered at different ages (84, 168, 210, 252 days). Shoulders and the edible portion (muscle and fat) were weighed and stored at -5 °C. Castrated and uncastrated lambs increased their body weight and half carcass weight, respectively. The shoulder weight increased in the carcasses of uncastrated animals. The edible portion of the shoulders of castrated lamb has greater amount of total lipids (16.09 g/100 g). The cholesterol content was influenced by castration, reducing with age. Santa Ines castrated lambs, under semi-extensive conditions, presented larger amounts of C18:1 T11 and CLA in the edible portion of the shoulder. Castration causes no significant correlation between total lipids, cholesterol and total saturated and unsaturated fatty acids of the edible portion of Santa Ines shoulder lambs from 84 to 252 days of age.


Roth M.T.P.,Centro Universitario Da Fundacao Educacional Of Barretos | Reis R.A.,São Paulo State University | Reis R.A.,Brazilian National Council for Scientific and Technological Development | de Resende F.D.,São Paulo State University | And 3 more authors.
Revista Brasileira de Zootecnia | Year: 2010

The objective of this was to evaluate the effect of chemical treatments with urea (3 or 5% DM) and anhydrous ammonia (3% DM) applied to the post-harvest hay residues of Brachiaria brizantha cv. Marandu that contained different moisture contents (15, 25 or 30%). A randomized block design was used with eight treatments and four replications (defined as the bale layers within the hay stacks). The hay treated with 3% anhydrous ammonia and 15% moisture content reduced the levels of neutral detergent fiber (NDF) from 84.3 to 79.1% and increased the in vitro digestibility of the dry matter (DM) from 37.3 to 55.5% compared to the control group. The variation in the moisture content did not significantly alter the action of ammonia, with mean values of 77.6% NDF and 57.3% in vitro digestibility of DM. The hay with 5% urea reduces the NDF content from 84.3 to 79.6% compared to the untreated hay, so the hay moisture content has to be increased to 30% to achieve a greater effect on the DM digestibility, which subsequently increases by 12 percentage units. © 2010 Sociedade Brasileira de Zootecnia.


de Oliveira L.B.,Programa de Pos Graduacao em Agronomia | Pires A.J.V.,Brazilian National Council for Scientific and Technological Development | de Carvalho G.G.P.,Programa de Pos Graduacao em Zootecnia | Ribeiro L.S.O.,Brazilian National Council for Scientific and Technological Development | And 2 more authors.
Revista Brasileira de Zootecnia | Year: 2010

The objective of this study was to assess the losses and nutritional value of silages of different forage crops (corn, Sudan sorghum, forage sorghum and sunflower) ensiled at the ideal time for each crop. A randomized complete design was used, with four forage crops and five replications. The forages were ensiled in PVC silos, 50 cm high and 10 cm in diameter, equipped with a Bunsen valve, that were stored for 60 days. The losses through gases and effluent were assessed for difference in weight before and after ensilaging. The losses by gases were relatively small compared with the losses by effluent. The corn silage stood out because it presented smaller losses, while the sunflower and Sudan sorghum presented greater losses by effluent. The Sudan sorghum silage presents the lowest nutritional value, due to the greater contents of the fibrous fractions, while the corn silage stand out positively because of its nutritional value. © 2010 Sociedade Brasileira de Zootecnia.

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