engleski

Influence of addition of polyenzyme preparations into feed mixtures on fattening and slaughtering properties of lambs

Different biostimulating substances are often used in lamb meat production as well as in other types of livestock production. The aim of this paper was to investigate effect of polyenzyme preparations “PolizymR” and “Polizym-BX” added into feed mixtures at an amount of 0, 1% of the total raw material composition of mixtures on fattening and slaughtering lamb quality. Experimental lamb fattening was conducted with two control (I and III) and two experimental (II and IV) groups. First (I) and second (II) group of lambs were given feed mixture of the same composition whereas the second one was given feed mixture with added “PolizymR” preparation (alpha- amylase, beta-glycanase, n-protease, cellulase, and beta-glycosidase). Third (III) and fourth (IV) groups of lambs were given feed mixture 2 but the fourth group was given mixture with addition of preparation “Polizym-BX” (alpha- amylase, beta-glycanase, n-protease, and xylanase) with addition of quality meadow hay. Significant differences in fattening and in most slaughtering properties of lambs were determined between experimental (II and IV) and control (I and III) groups of lambs. Average daily gains with II and IV experimental group fed by addition of polyenzyme preparations were statistically very significant (P?0, 01) higher by 4.97, i.e. 8.83% relative to lambs of the control groups (I and III). Feed mixture conversion was better and meadow hay conversion, consumption of feed mixtures and meadow hay increased with experimental groups of lambs (II and IV). Lambs of the experimental groups (II and IV) significantly differed concerning most of slaughtering properties relative to the lambs of the control groups (I and III). Application of polyenzyme preparations “PolizymR” and “Polizym-BX” added into feed mixtures adapted to composition of feed mixtures and lambs age can be recommended on the basis of the results of investigation.

lambs ; polyenzyme preparations ; additive ; fattening ; body weights ; daily gains ; conversion and consumption of forage mixtures and meadow hay and slaughtering properties

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