SciELO - Scientific Electronic Library Online

 
vol.64 issue5Performance milk composition and blood metabolites of Holstein x Gir cows grazing Brachiaria brizantha cv. Marandu grass supplemented with roasted soybeansEffect of sorghum hybrids silage associated to percentage of concentrate levels on the performance of steers author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Print version ISSN 0102-0935

Abstract

BATISTA, C.G. et al. Use of ionic minerals or organic mineral complexes in the dry period of Holsteins cows. Arq. Bras. Med. Vet. Zootec. [online]. 2012, vol.64, n.5, pp. 1232-1238. ISSN 0102-0935.  http://dx.doi.org/10.1590/S0102-09352012000500022.

The effects of the use of complex minerals on the occurrence of retained placenta during pre-partum were valued on 135 Holstein cows from two or more deliveries. The animals were divided in two groups: ionic mineral (69 animals) and complexed mineral (66 animals). In 55 of these animals serum concentrations of imunoglobulin G (IgG), Zn and Cu and colostrum quality were also evaluated. The experiment was conducted in complete randomized split-plot design, serum IgG and trace minerals were evaluated by analysis of variance and used, respectively, Duncan's test and Fisher. The α error rate of 7% was accepted. There were no differences between groups for the occurrence of retained placenta, colostrum quality and serum concentrations of Zn and IgG (P>0.07), a difference was observed for Cu (P<0.07) concentrations. The IgG concentrations were different on the weeks pre partum evaluated (P <0.07).

Keywords : cupper; immunoglobulin; placenta retention; zinc.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese