MARIACA E., BLÁHA J.
Abstract
The effect of different feeding programs on growth, feed conversion and carcass quality of Pekin ducks has been studied. Three genotypes of Czech Pekin ducks were used for this purpose: TTH, RITO 14 and RITO M. In this experiment there were compared two-diet program in control group and three-diet program in experimental groups of ducks. The experimental diets were formulated from maize, wheat, soybean meal, fish meal, soybean oil and feed additives. Crude protein content of diets was 22.5 % for starter, 18 % for grower, 16 % and 15 % for finisher diets.
15 % of crude protein in finisher diet showed better results in live weight and weight gains in all genotypes than 16 % one in males. The highest live weight was achieved in genotype TTH (3434 g) in males.
To the contrary in females better results showed 16 % of crude protein in the finisher diet in all genotypes than 15 % one. The highest live weight was achieved in genotype RITO M (3213 g) in females. The differences were statistically significant in genotypes TTH, RITO 14 and RITO M in males, and in RITO M in females. The same results were reached in weight gains in the period 1 - 49 days. In all genotypes and sexes during the period 36 - 49 days, 15 % of crude protein in finisher diet showed higher weight gains than 16 % one except males RITO 14 and RITO M. The differences were statistically significant in genotypes TTH, RITO 14 and RITO M in males, and in RITO M in females. Feed conversion was the best in three-diet program with 15 % of crude protein in finisher diet in both sexes and all genotypes. Carcass yield was the best in two-diet program in both sexes and all genotypes despite of the highest live weight was achieved in three-diet program.
Key words:
Pekin ducks, different diet program, growth, feed conversion, slaughter quality.