Abstract
KUB-2 line of chicken has improved local chicken selected from the KUB-1 chicken line. KUB-2 was selected for more egg production and yellow shank. KUB-1 chicken has 64% various of black feather color, which sometimes tends to have unpreferred dark carcass. Yellow shank color has a positive correlation with the skin color of carcass. As many as 517 pullets of KUB-2 at 4th generation were divided into two groups of 194 pullets of KUB-2kk (yellow shank) and 323 pullets of KUB-2nk non-yellow shank). The chickens were raised intensively in the individual cages for the 24 weeks observation. Variables measured were age at first egg (AFE) bodyweight at first egg (BWFE), egg weight at first egg (EWFE), average egg weight (AEW), average egg production (AEP) during 24 weeks, feed conversion ratio (FCR) of 25-43 weeks of age, and mortality. The result showed that there was no statistically significant different (p>0.05) between KUB-2nk and KUB-2kk respectively for AFE of 156.2 d and 158.1 d, for BWFE of 1788 g and 1808 g, for EWFE of 31.32 g and 31.34 g, for AEP24 of 103.3 eggs or 61.5% and 101.9 eggs or 60.7%, and for FCR25-43 of 3.53 and 3.54. AEW increased with increasing age of hen, the mortality of the whole population was 0.98%.
Highlights
IntroductionThe KUB-1 is a moderate egg type of local chicken invented by the Indonesian Research Institute for Animal Production (IRIAP) and was released for the commercial by the Agricultural Minister No 274/Kpts/SR.120/2/2014 (Direktorat Jenderal Peternakan dan Kesehatan Hewan 2014)
KUB-2 line of chicken has been selected from its ancestor of the KUB-1 line
The KUB-1 is a moderate egg type of local chicken invented by the Indonesian Research Institute for Animal Production (IRIAP) and was released for the commercial by the Agricultural Minister No 274/Kpts/SR.120/2/2014 (Direktorat Jenderal Peternakan dan Kesehatan Hewan 2014)
Summary
The KUB-1 is a moderate egg type of local chicken invented by the Indonesian Research Institute for Animal Production (IRIAP) and was released for the commercial by the Agricultural Minister No 274/Kpts/SR.120/2/2014 (Direktorat Jenderal Peternakan dan Kesehatan Hewan 2014). The production of KUB-1 has been licensed to a few national medium and small local chicken breeders since early 2017 (IRIAP, 2018 Pers Com). The KUB-1 produces egg up to 50% henday production (HDP) or about 180 eggs/hen/year. Sartika et al (2013) recognized the feather color of the population of KUB-1 was 64% dark-color base with shank color of about 74% dark. Shank color has a positive correlation with carcass skin and beak color (Gao et al 2017). Xianju and Baler Yellow chickens have yellow shank, beak, with feather color of red-yellow
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