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Araguaína, Brazil

Barros S.S.,Federal University of Tocantins | Da Cruz R.S.,Ciencia Animal Tropical | De Melo L.M.,Jr. | Missio R.L.,Federal Technological University of Parana | Restle J.,Bolsista PVNS CAPES
Semina:Ciencias Agrarias

This study aimed to assess the rumen papillae keratinization, cellular levels of liver and muscle glycogen, and the chemical composition of meat from feedlot-finished Nellore young bulls fed with levels of concentrate and babassu mesocarp bran. Twenty-eight animals with initial age of 21 months and initial body weight of 356.7 ± 19 kg were randomized to the following treatments: two levels of concentrate in the diet (65% and 71%), with or without inclusion of 35% of babassu mesocarp bran. Fragments of liver, muscle and rumen were obtained after slaughter of the animals. Levels of concentrate and babassu mesocarp bran in the diet did not affect the quantities of liver and muscle glycogen, and did not induce hyperkeratinization of rumen papillae. The chemical composition of the meat was not affected by the studied factors. The inclusion of 35% babassu mesocarp bran in high concentrate diets does not induce hyperkeratinization of rumen papillae, and does not change the amount of muscle and liver glycogen or the chemical characteristics of meat of Nellore young bulls. Source

Amorim A.F.,Instituto Federal Of Educacao | De Siqueira J.C.,Federal University of Maranhao | Rodrigues K.F.,Federal University of Tocantins | Vaz R.G.M.V.,Federal University of Tocantins | And 8 more authors.
Semina:Ciencias Agrarias

The purpose of this study the effect of inclusion levels (0, 10, 20 and 30%) of cassava bagasse (BM) to the diet on the physical and chemical parameters of raw and cooked meat thigh, drumstick and breast of chicken was to evaluate cutting hillbilly kind of lineage Label rouge® slaughtered at 84 days of age. Analyzes were performed in the laboratory of Animal Nutrition, Universidade Federal do Tocantins - UFT, Escola de Medicina Veterinária e Zootecnia, Campus Araguaína. Forty chicken carcasses, which were divided into half-carcases, half-carcases and 10 for analysis of the chemical composition of raw meat and the other 10 half-carcasses for analysis of chemical composition of cooked meat, they are included in these analyzes the crude protein (CP), ether extract (EE), dry matter (DM) and ash (CZ), with base on the percentage of dry matter, in addition to gross energy (GE) and cooking losses. Analyzes were also conducted of the physical attributes of meat (color, pH and texture) other 20 halfcarcasses. The inclusion of BM in the diet of broilers caipira type cut and cooking affected (P <0.05) the chemical characteristics of meat. Observed in thigh meat linear reduction in the deposition of CZ and linear increase in deposition of PB. Drumstick meat in CP content increased up to the level of 17.22% inclusion of BM corresponding to the deposition of 84.21% CP; and lower levels of EE (19.21%) was found in the estimated level of 21.33% inclusion of BM. In breast meat was observed deposition of 29.56% with 2.35% DM inclusion of BM deposition and 88.56% to 13.46% of CP inclusion of BM. However the physical characteristics of meat were not influenced by the levels of inclusion of BM. It is recommended, with base on the chemical composition of the meat, to use up the 20% level of inclusion of BM. Source

Da Silva Neto S.P.,Federal University of Tocantins | Dos Santos A.C.,Ciencia Animal Tropical | De Lima Leite R.L.,IFTO | Da Silva J.E.C.,Ciencia Animal Tropical | And 3 more authors.
Semina:Ciencias Agrarias

This study aimed to quantify, describe, and identify plant litter production and nutrient accumulation zones in different forest-pasture integration (FPI) systems and forest strata of the Cerrado-Amazon transition on typical orthic Quartzarenic Neosol using spatial analysis, principal component analysis, and non-hierarchical fuzzy k-mean clustering logic techniques. The evaluations were performed at two FPI systems comprising a combination of Brachiaria brizantha cv. Marandu and thinned native vegetation with 50 and 75% (FPI-I and FPI-II, respectively) shade in an original thinned forest (NFI) and in an original intact forest (NF-II) with 80 and 95% shade, respectively. An area of 4,000 m2 (40 x 100 m) that contained 32 sampling points arranged in a 4 x 25 m grid was demarcated for each treatment. Plant litter was collected using 32 collectors installed at equidistant points. Twelve nylon bags were placed on the soil surface at each point to evaluate the plant litter decomposition, totaling 384 bags per treatment. It was possible to quantify, describe, and define plant litter production and nutrient accumulation zones in different FPI systems and forest strata of the Cerrado-Amazon transition on orthic Quartzarenic Neosol using geostatistical analysis, principal components, and non-hierarchical fuzzy k-mean clustering logic procedures. Source

Dos Santos P.M.,Ciencia Animal Tropical | Dos Santos A.C.,Brazilian National Council for Scientific and Technological Development | Da Silva J.E.C.,UFT | Da Silva Neto S.P.,Ciencia Animal Tropical | Alexandrino E.,UFT
Revista Caatinga

The morphogenesis determines the model of plant growth, and is, among other factors, under the influence of nutrient availability. In this context, the aim of this work was to evaluate the effect of using wastewater from the dairy industry (RLL) as a supplier of nutrients in the morphogenesis of grass Mombaça. For this we studied six doses of liquid dairy waste, corresponding to: 10, 50, 100, 150, 200 and 400 m³ ha-1 evaluated in four production cycles and compared to chemical fertilizer. The treatments were arranged in a completely randomized design with four replications compounds. We measured the characteristics of expansion and leaf appearance, leaf senescence, stem elongation and tillering. The application of wastewater from the dairy industry has positively influenced the leaf elongation rate, leaf appearance rate, stem elongation rate and the rate of tillering. A reduction in the rate leaf senescence and the phyllochron in the grass. The application of 400 m³ ha-¹ RLL guarantees satisfactory morphogenic indices in intensive grazing system, replacing up to 25% of phosphorus and potassium fertilization of 100%, having also a positive residual effect on the growth of grass. The liquid waste is a potential supplier of dairy grazing potassium for the pastures. © 2014, Universidade Federal Rural do Semi-Arid. All rights reserved. Source

Fonseca F.L.R.,Federal University of Tocantins | De Siqueira J.C.,Federal University of Maranhao | Vaz R.G.M.V.,UFT | Rodrigues K.F.,UFT | And 7 more authors.
Semina:Ciencias Agrarias

The objective of this study was to evaluate the technical and economic feasibility of partial replacement of corn with babassu mesocarp flour in diets for broilers from one to 21 days of age. Two hundred male day-old chicks, from the Cobb 500® line, were distributed in a completely randomized design with four treatments (0%, 10%, 20% and 30% replacement of maize flour with the babassu mesocarp) and five replicates were used comprising ten birds. Were evaluated performance (weight gain, feed intake, feed conversion and water intake), organ biometrics, metabolizability coefficients of dry matter (MCDM), crude protein (MCCP) and gross energy (MCGE) and cost of feeding diets containing babassu mesocarp flour (BMF). It was observed that the substitution of corn with BMF negatively influenced (P < 0.05) weight gain, feed conversion and body weight at 21 days of age. The MCDM and MCGE of the diets decreased with increasing level of substitution of corn for BMF. The levels of substitution of corn with BMF did not affect (P> 0.05) the relative weights of the carcass, bursa, spleen, heart, gizzard or liver, nor the relative weight or length of the small intestine. The lower cost of feed per kg of weight gain was obtained with the diet containing 10% corn replacement with BMF, which resulted in a higher gross margin in relation to food. The replacement of corn with BMF in diets for broilers from one to 21 days of age proved to be technically feasible in 10%. Source

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