Izvorni znanstveni članak
SELENIUM STATUS OF COWS AND SHEEP AS A CONSEQUENCE OF REGIONAL DIFFERENCES AND FEEDING PRACTICE ON SMALL FARMS IN CENTRAL BOSNIA AND EASTERN SLAVONIA
Emir Džomba
; Poljoprivredno-prehrambeni fakultet, Univerzitet u Sarajevu, Sarajevo, Bosna i Hercegovina
Mirha Đikić
; Poljoprivredno-prehrambeni fakultet, Univerzitet u Sarajevu, Sarajevo, Bosna i Hercegovina
Zdenko Lončarić
; Poljoprivredni fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Drena Gadžo
; Poljoprivredno-prehrambeni fakultet, Univerzitet u Sarajevu, Sarajevo, Bosna i Hercegovina
V. Ivezić
; Poljoprivredni fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Salko Muratović
; Poljoprivredno-prehrambeni fakultet, Univerzitet u Sarajevu, Sarajevo, Bosna i Hercegovina
Marcela Šperanda
; Poljoprivredni fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Bal Ram Singh
; University of Life Sciences, P.O. Box 5003, NO-1432 Ås Norway
Sažetak
A study of the effect of different feeding and management practices on a ruminant farms located in the central part of Bosnia and Herzegovina and eastern part of Croatia on selenium status in animals was performed. The animals were kept under different feeding systems varying from extensive to highly intensive. The total of 85 blood samples of cows and 30 samples of sheep were collected during 2012. Samples of the soil and plants from the same locality as blood samples were also collected. In conjunction with samples collection, cooperating practitioners completed a questionnaire summarizing the feeding practice on farms. Selenium in blood samples was determined by a hydride generation atomic absorption technique and ICP-OES (inductively coupled plasma – optical emission spectrometry) was used to determine selenium in soil samples. A multiple linear regression (MLR) model was developed to predict blood selenium concentration as the function of different factors, such as locality - selenium in soil, animal species - cow vs. sheep, feeding practice - commercial concentrates, grain and selenium supplements. The results indicate low selenium content in all investigated soils containing less than 0.5 ppm and consequently, also low selenium content in most plant samples (mainly in the central Bosnia region). Despite the low selenium content in the soils, its content in the blood of cows is higher reflecting feeding practice, mainly in Croatia. All investigated sheep were deficient in selenium. Using a stepwise multiple linear regression method, a significant model emerged (F3,111 = 80.939; p<0.005; R square = 0.678). Significant variables were locality (Beta = 0.587; p<0.005), standard concentrate mixtures (Beta = 0.778; p<0.005) and grain (Beta = 0.17; p<0.05). Animal species and selenium supplements were not significant in this model.
Ključne riječi
selenium status; ruminants; feeding practice; MLR
Hrčak ID:
139636
URI
Datum izdavanja:
13.5.2015.
Posjeta: 865 *