EFFECT OF ENZYME PREPARATIONS (PHYTASE, XYLANASE) ON THE DIGESTION OF PROTEIN SUBSTANCES IN THE DIET OF BROILER CHICKENS

Tulaganova Umida Tolibjon qizi; Khaitboev Ulugbek Norboy ugli; Yangiboev Abdimalik Eshmurodovich; Kholbutaev Ilyosjon Rustam ugli

Authors

Tulaganova Umida Tolibjon qizi Master’s Student at the Tashkent Branch of Samarkand State University of Veterinary Medicine, Livestock and Biotechnology
Khaitboev Ulugbek Norboy ugli Master’s Student at the Tashkent Branch of Samarkand State University of Veterinary Medicine, Livestock and Biotechnology
Yangiboev Abdimalik Eshmurodovich Doctor of Agricultural Sciences (DSc) at the Tashkent Branch of Samarkand State University of Veterinary Medicine, Livestock and Biotechnology
Kholbutaev Ilyosjon Rustam ugli Candidate of Agricultural Sciences (PhD) at the Tashkent Branch of Samarkand State University of Veterinary Medicine, Livestock and Biotechnology

Keywords:

Broiler, enzyme preparations, phytase, xylanase, protein digestion, feed conversion, nutrient absorption.

Abstract

This study investigates the impact of enzyme preparations—phytase and xylanase—on the digestion of protein substances in broiler chicken diets. Results indicate that enzyme supplementation enhances nutrient digestibility, growth performance, and feed efficiency. Phytase improves the hydrolysis of phytate phosphorus, while xylanase aids in the breakdown of non-starch polysaccharides, leading to better protein utilization and overall performance. Protein digestibility increased by 4–7%.