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| Cortinhas,Cristina Simões; Freitas Júnior,José Esler de; Naves,Julianne de Rezende; Porcionato,Marco Aurélio de Felicio; Silva,Luís Felipe Prada e; Rennó,Francisco Palma; Santos,Marcos Veiga dos. |
| The present study was carried out with the objective of evaluating the effects of feeding dairy cows with organic or inorganic sources of zinc (Zn), copper (Cu) and selenium (Se) on blood concentrations of these minerals, blood metabolic profiles, nutrient intake and milk yield and composition. Nineteen Holstein cows were selected and randomly assigned to two groups for receiving organic (n = 9) or inorganic (n = 10) sources of Zn, Cu and Se from 60 days before the expected date of calving to 80 days of lactation. Samples of feed, orts and milk were collected for analysis. Body condition score (BCS) was determined and blood samples were collected for analysis of Zn, Cu and Se concentrations, as well as for metabolic profile. Supplying organic or inorganic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chelate; Microminerals; Nutrition; Organic sources. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600023 |
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