productive and physiological evaluation of some commercial feed additives as growth promoters for growing Muscovy ducks [electronic resource].

Includes references.

A total number of two hundred and seventy, one day old, unsexed, Muskovy ducks wefe used to compare the effect of adding Zinc bacitracin, Lincomix, Ovo-Stark. N-Fac, and verginiamycin to the control diet, at levels of 1000, 250, 1000.500, and 1000 gm/ton ration respectively, on the performance, some metabolic concentrates and carcass characteristics. Birds were divided equally into 6 groups containing 45 birds each. Each group contained 3 replicates. of 15 birds. Experimental diets supplemented or not one source of the growth promoters. The experiment was terminated when birds were 11 weeks old. Weight gain and feed intake were recorded at 0, 3. 5, 7 9. and 11 weeks of age. Feed conversion (feed/gain) was calculated. Some plasma constituents were determined. At the end of the experiment, some of carcass characteristics were measured.

Summary in Arabic.

1