Influence of application of enzymes in poultry nutrition on production results and quality of product

Abstract

The review of the latest results in application of enzymes in nutrition of poultry is presented in this paper. Results obtained in application of enzymes in nutrition of chickens and layer hens are presented. Investigations have demonstrated that addition of enzymes to diets in nutrition of fattening chickens resulted in improvement of production results and quality of the product. By adding certain enzyme preparations to diets in nutrition of chickens higher gain of body mass was realized as well as better feed conversion. Results are even better if enzymes are added to diets which contain more non-starch polysaccharides. These are the diets which contain considerable percentage of cereals (barley, wheat, rye, oats) and plant protein feeds (sunflower meal, rape seed oil meal, soy bean meal). Added enzymes in such diets increase the digestibility of certain nutritive substances (proteins, amino acids, mineral substances and crude fibres). Enzyme phytase is of special importance, application of this enzyme improves the utilization of phytine phosphorus and in this way the secretion of phytine phosphorus in the environment is reduced and pollution prevented. Similar results in regard to application of enzymes in nutrition of layer hens were obtained. Investigations have demonstrated that by adding certain enzyme preparations to diets used in nutrition of layers higher laying capacity and better egg quality are realized. Enzyme phytase is of special importance also in nutrition of layer hens. By application of this enzyme in nutrition of layers primarily better egg quality is realized (thicker and stronger egg shell, lower percentage of broken/cracked eggs, less dirty eggs, etc.). Results of previous research have contributed to inclusion of enzymes in regular additives into diets for poultry nutrition.

U ovom revijalnom radu dat je prikaz najnovijih rezultata ispitivanja uticaja primene enzimskih preparata u ishrani živine.Prikazani su rezultati primene enzima u ishrani pilića. Dobijeni rezultati su pokazali da primena enzimskih preparata u ishani pilića utiče pozitivno na proizvodne rezultate (prirast telesne mase, konzumaciju hrane, konverziju hrane i zdravstveno stanje pilića).Utvrdjen je takodje pozitivan uticaj primenjenih enzima u ishrani pilića na kvalitet proizvoda (kvalitet trupa i sastav trupa). Efekti su posebno izraženi kod pilića hranjenih obrocima na bazi žitarica (ječam, pšenica, ovas) i biljnih proteinskih hraniva (suncokretova sačma, arašidova sačma i sačma uljane repice). Primena enzima u ishrani nosilja uticala je pozitivno na proizvodne rezultate (nosivost) i kvalitet jaja, posebno na kvalitet ljuske (debljina ljuske, čvrstina ljuske i manja zaprljanost jaja).