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The Effect of Broiler Manure with Lactobacillus casei Fermentation on the Kampung Chicken Feed Convertion Ratio ABSTRACTHusbandry of kampung chicken is constrained by high feed prices and poor productivity. This study aims to utilize alternative feed materials derived from broiler manure to obtain a cheaper feed with good quality. Manure contains high nutrients. Manure was fermented using Lactobacillus casei to improve feed conversion. Two hundred chickens were divided into 4 groups (n = 50). Groups P1, P2, and P3 were given 4%, 8%, and 12% fermentation of L. casei, respectively. Group P0 was given a regular feed without L. casei. Each treatment group consisted of four replicates and were maintained for 60 days. The research design used was Completely Randomized Design subjected to analysis of variant (ANOVA) followed by Duncan test. The feed conversion values of groups P0, P1, P2, and P3 were 4.46; 4.38; 4.21; and 4.54, respectively. The results showed that the feed conversion was not significant in all groups. It was concluded that L. casei fermenter could not improve the feed conversion ratio (FCR).Keywords: FCR, fermentation, kampung chicken, Lactobacillus casei, manure ABSTRAKBudidaya ayam kampung terkendala tingginya harga pakan dan rendahnya produktivitas. Penelitian ini bertujuan memanfaatkan pakan alternatif bersumber manur (limbah kotoran) ayam broiler untuk memperoleh pakan murah dengan kualitas baik. Manur broiler masih mengandung nutrisi yang tinggi. Manur difermentasi menggunakan Lactobacillus casei untuk memperbaiki konversi pakan. Dua ratus ekor ayam dibagi menjadi 4 kelompok (n=50 ekor). Kelompok P1, P2, dan P3 masing-masing diberi ransum yang ditambah fermentasi L. casei sebanyak 4%, 8%, dan 12%. Kelompok P0 diberikan pakan biasa tanpa penambahan L. casei. Setiap kelompok perlakuan terdiri dari empat ulangan dipelihara selama 60 hari. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan analisis ragam yang dilanjutkan dengan uji Duncan. Konversi pakan dari kelompok P0, P1, P2, dan P3 berturut-turut 4,46; 4,38; 4,21; dan 4,54.  Hasil penelitian menunjukkan konversi pakan tidak berbeda nyata pada semua kelompok perlakuan. Dari hasil penelitian disimpulkan penggunaan fermenter L.casei pada pakan belum mampu memperbaiki konversi pakan.Kata Kunci: ayam kampung, FCR, fermentasi, Lactobacillus casei, manur

PENGARUH PEMBERIAN MANUR BROILER DENGAN FERMENTASI <em>Lactobacillus casei</em> TERHADAP KONVERSI PAKAN AYAM KAMPUNG