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| Rocha,Gabriel Cipriano; Palma,Malber Nathan Nobre; Detmann,Edenio; Valadares Filho,Sebastião de Campos. |
| The objective of this work was to evaluate the accuracy of digestion techniques using nitric and perchloric acid at the ratios of 2:1, 3:1, and 4:1 v v-1, in one- or two-step digestion, to estimate chromium contents in cattle feces, using sodium molybdate as a catalyst. Fecal standards containing known chromium contents (0, 2, 4, 6, 8, and 10 g kg-1) were produced from feces of five animals. The chromium content in cattle feces is accurately estimated using digestion techniques based on nitric and perchloric acids, at a 3:1 v v-1 ratio, in one-step digestion, with sodium molybdate as a catalyst. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Chromic oxide; Chromium recovery; Markers.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000100092 |
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| Souza,N.K.P.; Detmann,E.; Pina,D.S.; Valadares Filho,S.C.; Sampaio,C.B.; Queiroz,A.C.; Veloso,C.M.. |
| The objective of this work was to evaluate combinations between acid digestion techniques and spectrophotometric quantification to measure chromium concentration in cattle feces. Digestion techniques were evaluated based on the use of nitric and perchloric acids, sulfuric and perchloric acids, and phosphoric acid. The chromium quantification in the solutions was performed by colorimetry and by atomic absorption spectrophotometry (AAS). When AAS was used, the addition of calcium chloride to the solutions as a releasing agent was also evaluated. Several standard samples containing known chromium contents were produced (0, 2, 4, 6, 8 and 10g of chromium per kg of feces) using cattle feces obtained from three different animals to evaluate the accuracy of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atomic absorption; Colorimetry; External markers; Chromic oxide. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500028 |
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| Oliveira Neto,Renato Alves de; Silva,José Henrique Souza da; Rocha,Marta Gomes da; Pötter,Luciana; Sichonany,Maria José de Oliveira; Biscaíno,Ludmila Leonardi; Santos,Felipe Asconavieta dos; Difante,Marcos Vinicios Beck. |
| The experiment was carried out to evaluate forage intake, performance and ingestive behavior of beef heifers. Productive, structural and chemical characteristics of the pasture were also evaluated. The experimental design was completely randomized in a 3 × 2 factorial arrangement, with three pasture systems (Alexandergrass [Urochloa plantaginea Link.] with and without supplement to heifers and Coastcross [Cynodon dactylon (L.) Pers.]) and two phenological stages: vegetative and flowering. The grazing method was put-and-take stocking. Grazing, ruminating and idle activities, feeding stations, displacement patterns, bite mass and bite rate were evaluated. The forage intake was estimated using chromic oxide as an indicator of fecal output. The heifers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromic oxide; Cynodon dactylon; Feeding station; Urochloa plantaginea. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800003 |
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| Oliveira, Euclides Reuter de; Monção, Flávio Pinto; Gabriel, Andréa Maria de Araújo; Fernandes, Alexandre Rodrigo Mendes; Moura, Lais Valenzuela; Nascimento, Felipe de Almeida. |
| This study aimed to evaluate the performance of feedlot lambs fed diets formulated with hay of different genotypes of Cynodon spp. and to compare the dry matter digestibility of diets using different evaluation methods (total fecal collection and chromium oxide). Suffolk crossbred neutered male lambs (n=30), with an average age of 90 days and average body weight of 21.5 kg ± 1.6. Diets were formulated using a standard concentrate and hay of the following genotypes of Cynodon dactylon: Jiggs, Vaquero, Tifton 68, Coast-Cross, Tifton 85 and Russell, in a 60:40 forage concentrate ratio, composing the treatments distributed in a randomized block design in a factorial 5 x 2 arrangement of 5 diets and 2 digestibility evaluation methods. Animals receiving Vaquero... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.05.00-4 Cynodon; Sheep; Chromic oxide; Intensive animal production; Finished. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/30462 |
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