고상식 오리사에서 다양한 사육밀도가 토종 실용오리의 생산성 및 균일도에 미치는 영향 = Effect of Different Stocking Densities in Plastic Wired-Floor House on Performance and Uniformity of Korean Native Commercial Ducks

다국어 초록 (Multilingual Abstract)

This study investigated the effects of various stocking densities on the growth performance of Korean native ducks. Twelve hundred day-old ducklings were reared for 50 days in a duck house (windowless, plastic wire-floor pen). Two weeks later, 852 of these ducks (350±30 g) were selected for at least 80% uniformity per stocking treatment (six treatments, four replications/treatment, depending on a stocking density of 4∼9 birds m —2 ). Experimental diets were corn-soybean-based and broiler ducks were grouped based on age [0∼21 days of age (CP 21%, ME 2,900 kcal/kg) and 21∼50 days of age (CP 17%, ME 3,100 kcal/kg)]. Body weight (BW) did not significantly differ among different aged treatment groups (P>0.05); however, uniformity decreased with higher stocking densities (P<0.05). Feed intake and feed conversion ratio of ducks aged 42∼50 days significantly decreased in the T4-6 treatments compared with the T1-3 treatments (P<0.05). In all experimental periods, BW gain was not significantly different among treatments, but feed intake decreased significantly as the stocking density increased (P<0.05), and feed conversion ratio was significantly different among six treatments with stocking density (P<0.05). In conclusion, we found that the stocking density of Korean native ducks in a plastic wire-floor pen was approximately 7 birds m —2 in consideration of productivity and uniformity.

참고문헌 (Reference)

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