Organic and inorganic sources of zinc, copper and selenium in diets for dairy cows: intake, blood metabolic profile, milk yield and composition

Cortinhas, Cristina Simoes, de Freitas Junior, Jose Esler, Naves, Julianne de Rezende, de Felicio Porcionato, Marco Aurelio, Prada E Silva, Luis Felipe, Renno, Francisco Palma and dos Santos, Marcos Veiga (2012) Organic and inorganic sources of zinc, copper and selenium in diets for dairy cows: intake, blood metabolic profile, milk yield and composition. Revista Brasileira De Zootecnia-Brazilian Journal of Animal Science, 41 6: 1477-1483. doi:10.1590/S1516-35982012000600023


Author Cortinhas, Cristina Simoes
de Freitas Junior, Jose Esler
Naves, Julianne de Rezende
de Felicio Porcionato, Marco Aurelio
Prada E Silva, Luis Felipe
Renno, Francisco Palma
dos Santos, Marcos Veiga
Title Organic and inorganic sources of zinc, copper and selenium in diets for dairy cows: intake, blood metabolic profile, milk yield and composition
Journal name Revista Brasileira De Zootecnia-Brazilian Journal of Animal Science   Check publisher's open access policy
ISSN 1806-9290
Publication date 2012-06-01
Sub-type Article (original research)
DOI 10.1590/S1516-35982012000600023
Open Access Status DOI
Volume 41
Issue 6
Start page 1477
End page 1483
Total pages 7
Place of publication Vicosa, Brazil
Publisher Universidade Federal de Vicosa
Language eng
Abstract 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 sources of Zn, Cu, and Se did not affect dry matter and nutrient intake, blood metabolic profile, milk yield and composition, plasma concentration of these minerals, and BCS or change the BCS in cows from 60 days before the expected date of calving to 80 days of lactation. An effect of time was observed on all feed intake variables, plasma concentrations of Zn and Se, milk yield, milk protein content, BCS and change in BCS.
Keyword Chelate
Microminerals
Nutrition
Organic sources
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Fri, 17 Mar 2017, 14:22:44 EST by Luis Prada E Silva on behalf of Centre for Animal Science