copper deficiency conditioned by high levels of zinc, manganese and iron in the middle paraíba, rj, brazil
deficiência de cobre condicionada a altos teores de zinco, manganês e ferro na região do médio paraíba, rj, brasil

Clicks: 168
ID: 140105
2013
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #143 of 225 articles by views in frontiers in neuroendocrinology

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 225 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Concentrations of microminerals in the soils, pastures, and sera of adult and young bovines were determined in 7 areas of Middle Paraíba, Rio de Janeiro, Brazil, that showed a history of low reproductive performance, marked weight loss of cows after calving, allotriophagy, and changes in pelage color. The animals were subjected to clinical evaluation, and the main signs were as follows: regular to poor general condition, anemia, alopecia, depigmentation of the pelage in adult animals, discolored pelage (reddish) in dark animals, and thinning and loss of hair around the eyes. Calves showed bad general appearance, retarded development, and rough, dry, and spiked hair. There were other evident signs such as craving and consumption of foreign material such as soil, wood, or bones. After the interview with the owners and on-site evaluation of the herds, soil samples, forages, and blood serum samples were obtained for analysis of macro and micronutrients in 2 different periods: May/June (end of the rainy season–autumn) and October/November (end of dry season–spring). The findings of soil (3.03 ± 1.72/3.13 ± 1.22 mg/ dm3) and forage (11.91 ± 2.92/13.6 ± 5.23 ppm) samples indicated normal and high levels of copper, respectively, in most of the pastures which is contrary to the clinical signs of deficiency observed in the animals. However, the copper levels in serum were lower than normal (0.42 ± 0.14/0.45 ± 0.17 ppm) in majority of the animals, in periods of evaluation and for all properties. Excessively high values of iron, zinc, and manganese were found in soil and pasture samples, which could have probably been acting as antagonists of copper absorption, resulting in a conditioned deficiency.

Descrevem-se as concentrações de microelementos minerais em amostras de solos, pastagens e soro de bovinos adultos e jovens em sete propriedades na região do Médio Paraíba, RJ, Brasil com histórico de baixo desempenho reprodutivo, emagrecimento acentuado de vacas após o parto, alotriofagia e alterações na coloração da pelagem. Os animais foram submetidos à avaliação clínica e os principais sinais evidenciados foram: condição geral de regular a ruim, anemia, rarefação e despigmentação da pelagem em animais adultos, coloração avermelhada dos pelos em animais de pelagem escura, além de pelos claros e ralos ao redor dos olhos. Os bezerros apresentavam aspecto geral ruim, baixo desenvolvimento e pelos ásperos, secos e/ou arrepiados. Outros sinais evidenciados foram hábito de comer terra, casca de árvores e roer ossos. Após entrevista com os proprietários e avaliação in loco dos rebanhos, obtevese amostras de solos, forragens e soro sanguíneo para a análise de macro e micronutrientes em dois períodos: Maio / Junho (final da estação das chuvas – outono na região) e outubro / novembro (final da estação seca – primavera na região). Os resultados dos solos (3,03±1,72 / 3,13±1,22 mg/dm3) e forragens (11,91±2,92 / 13,6±5,23 ppm) apontaram para teores de cobre, dentro da normalidade e altos, respectivamente na maioria dos pastos das propriedades o que contraria os sinais clínicos da deficiência evidenciada nos animais. Contudo no soro sanguíneo os teores de cobre estavam abaixo do normal (0,42±0,14 / 0,45±0,17 ppm) na maioria dos animais em ambos os momentos de avaliação em todas as propriedades. Porém foram encontrados valores excessivamente elevados de ferro, zinco e manganês em solos e pastagens que provavelmente estavam atuando como antagonistas da absorção do cobre e ocasionando sua deficiência condicionada.

Reference Key
marques2013semina:copper Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ana Paula Lopes Marques;Rita de Cássia Campbell Machado Botteon;Estelle Barreto de Amorim;Paulo de Tarso Landgraf Botteon
Journal frontiers in neuroendocrinology
Year 2013
DOI
10.5433/1679-0359.2013v34n3p1293
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/13187
Keywords
Agriculture (General)

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.