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Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk mengetahui pengaruh kepadatan closed house terhadap persentase karkas dan lemak abdomen ayam broiler strain Ross. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan lima perlakuan yaitu P1 (kepadatan 8 ekor/m2), P2 (kepadatan 9 ekor/m2), P3 (kepadatan 10 ekor/m2), P4 (kepadatan 11 ekor/m2), dan P5 (kepadatan 12 ekor/m2) dengan masing-masing perlakuan dilakukan 4 kali ulangan sehingga didapat 20 percobaan. Total keseluruhan ayam yang digunakan adalah 200 ekor ayam broiler unsex. Hasil analisis variansi menunjukkan perlakuan kepadatan closed house berpengaruh tidak nyata (P>0,05) terhadap persentase karkas dan lemak abdomen ayam broiler strain Ross. Persentase karkas ayam broiler strain Ross berkisar antara 73,30% sampai 74,87% dengan rataan tertinggi terdapat pada perlakuan P2  yaitu sebesar 74,87% ± 1,70 dan rataan terendah terdapat pada perlakuan P3  yaitu sebesar 73,30% ± 1,08. Persentase lemak abdomen ayam broiler strain Ross berkisar antara 1,19% sampai 1,76%  dengan rataan tertinggi pada P3 yaitu sebesar 1,76% ± 0,21 dan rataan terendah pada P2 yaitu sebesar 1,19% ± 0,11. Dapat disimpulkan bahwa kepadatan closed house 8 ekor/m2 sampai dengan 12 ekor/m2 memberikan hasil yang relative sama terhadap persentase karkas dan persentase lemak abdomen ayam broiler strain Ross.

Abtrak (Bhs. Inggris)

The research aims was to determine the effect of closed house density on the percentage of carcasses and abdominal fat of broiler strains of Ross chickens. This study used a Complete RandomIzed Design (CRD) with five treatments, namely P1 (8 chickens /m2), P2 (9 chickens / m2), P3 (10 chickens / m2), P4 (11 chickens / m2), and P5 (12 chickens / m2) with each treatment conducted 4 times the test so that obtained 20 experiments. The total number of chickens used is 200 unsex broiler chickens. The results of variance analysis showed closed house density treatment had an unreal effect (P>0,05) on the percentage of carcasses and abdominal fat of broiler chicken strains of Ross. The percentage of broiler chicken carcasses strain Ross ranges from 73,30% to 74,87% with the highest average found in the P2 treatment of 74,87% ± 1,70 and the lowest average is found in the P3 treatment of 73,30% ± 1,08. The percentage of abdominal fat of broiler strain Ross chickens ranges from 1.19% to 1.76% with the highest average in P3 of 1,76% ± 0,21 and the lowest average in P2 of 1,19% ± 0,11. It can be concluded that the density of closed house 8 chickens/m2 to 12 chickens/m2 gives relatively similar results to the percentage of carcasses and the percentage of abdominal fat broiler strain Ross.

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