Abstract
<p class="Default"><span lang="EN-US">Sensi-1 Agrinak is a strain of the improved native chickens for meat production in Indonesia. The objective of </span><span lang="IN">this</span><span lang="EN-US"> study was to investigate influence of different dietary energy and protein levels on </span><span lang="IN">p</span><span lang="EN-US">erformance, meat bone ratio</span><span lang="IN">,</span><span lang="EN-US"> and meat chemical composition of Sensi-1 Agrinak chicken, reared until 10 weeks of age. Two hundred and sixteen of unsexed day old chickens (DOC) of Sensi-1 Agrinak were subjected to six experimental rations differed in dietary crude protein (CP) content,. </span><span lang="IN">Namely:</span><span lang="EN-US"> 21;19; and 17 % and dietary metabolizable energy (ME) (2800 and 3000 kcal/kg). Each treatment combination was replicated four times and fed from day old to 10 weeks old. In each treatment combination there were nine unsexed-DOCs. The parameters observed were performance (i.e. live weight, feed intake, viability, FCR), economic index (European Production Efficiency Factor/EPEF), meat bone ratio, and meat chemical composition. </span><span lang="IN">R</span><span lang="EN-US">esult showed that </span><span lang="EN-US">increas</span><span lang="IN">ed</span><span lang="EN-US"> of dietary CP level increased live weight and EPEF (p&lt;0.05). Sensi-1 Agrinak chicken had the best FCR (2.59), when fed diet containing 21% CP and 3000 kcal/kg. Increas</span><span lang="IN">ed</span><span lang="EN-US"> dietary CP level increased the meat-bone ratio of breast, thighs, and drumsticks. Meanwhile, increas</span><span lang="IN">ed</span><span lang="EN-US"> levels of dietary CP and ME did not affect (p&gt;0.05) meat chemical composition. It </span><span lang="IN">is</span><span lang="EN-US"> concluded that optimal dietary levels of crude protein and energy for unsexed Sensi-1 Agrinak chicken up to 10 weeks of age were 21% CP and 3000 kcal/kg.</span></p>
Highlights
Improving and developing Indonesian native chicken has been continued done by the Indonesian government in order to increase the contribution of native chicken to the national poultry meat
The objective of the current study was to investigate the effect of feed with different energy and protein levels on the performance, meat bone ratio, and meat chemical composition of Sensi-1 Agrinak chickens reared to 10 weeks of age
The current study showed that the protein and fat content of Sensi-1 Agrinak chicken meat was consistent with that reported by several researchers that the protein and fat content of meat chicken was above 22.50% crude protein (CP) and below 3% fat (Marcu et al 2011b; 2009; Horniakova et al 2009)
Summary
Improving and developing Indonesian native chicken has been continued done by the Indonesian government in order to increase the contribution of native chicken to the national poultry meat. There is a significant potential in developing native chicken in Indonesian livestock industry Chen et al (2008) stated that generally, native chicken meat has intense flavour, firm texture, low fat content and rich in other nutrients. One of the improved strains of native chicken in Indonesia as a meat producer is Sensi-1. The Sensi-1 Agrinak chicken was selected for optimum growth of market demand, by the average live weight of 1 kg per bird at 10 weeks of age (Hasnelly et al 2017). Information of the influence of dietary protein nor energy on the performance of Sensi-1 Agrinak chicken has not yet reported
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