ESTIMATION OF SELECTION ACCURACY AND RESPONSES OF THE PRODUCTION CHARACTERISTICS USING DIFFERENT SELECTION INTENSITY IN MAGELANG DUCK
Abstract: This research was
aimed to estimate selection response and accuracy of hatching weight, growth
and egg production using different selection intensities in Magelang duck. A
nested design was used in this study with experimental material was Magelang
duck consisted of 8 male (treatments), 40 female (sub-treatments) and 360
offspring (replicates) and the observed parameter was productive
characteristics. Nine DOD from each female were measured for hatching weight
and growth up to 8 weeks old. The measured Hen Day Production (HDP) at initial
laying for within days. Result showed that different selection intensities (25,
50 and 75%) led to response in 2.968; 1.870 and 0.982 g hatching weight;
respectively; 0.00221, 0.00139 and 0.00073 g growth, respectively; and 1.728,
1.088 and 0.571% egg production, respectively. Selection accuracy for hatching
weight, growth and egg production was 0.70, 0.76 and 0.51, respectively.
Conclusively, the less preserved female proportion, the higher selection
intensity value thus the higher selection response. Selection accuracy of
production characteristics was based on its heritability value.
Keywords: selection responses;
selection intensity; selection productivity; production characteristics;
Magelang duck
Author: D. Purwantini, I.
Ismoyowati, S. A. Santoso
Journal Code: jppeternakangg160037
