ABSTRAKPenelitian bertujuan untuk mengevaluasi penampilan produksi ayam petelur yang diberi pakan dengan sumber kalsium berbeda. Penelitian menggunakan 200 ekor ayam petelur strain Isa Brown umur 25 minggu. Ayam dipelihara didalam kandang batre individual selama 12 minggu. Empat sumber kalsium (batu kapur sebagai kontrol, 5% batu kapur + 2,5% limbah kerabang telur, 2,5% batu kapur + 5% limbah kerabang telur, dan 7,5% limbah kerabang telur) digunakan dalam pakan penelitian. Rancangan pecobaan yang digunakan yaitu Rancangan Acak Lengkap dengan 4 perlakuan dan 5 ulangan. Setiap unit percobaan terdiri dari 10 ekor ayam petelur. Parameter yang diukur yaitu konsumsi pakan, konsumsi protein, konsumsi kalsium, konsumsi fosfor, produksi telur, berat telur dan konversi pakan. Hasil penelitian menunjukkan bahwa penggunaan 7,5% limbah kerabang telur sebagai sumber kalsium meningkatkan konsumsi pakan, konsumsi kalsium, konsumsi fosfor, produksi telur dan berat telur kecuali konversi pakan. Kesimpulan dari penelitian ini adalah penggunaan limbah kerabang telur sebagai sumber kalsium pakan ayam petelur menghasilkan performa produksi lebih baik dibanding menggunakan batu kapur dan campuran batu kapur dengan limbah kerabang telur.Kata kunci : kalsium, limbah kerabang telur, penampilan, produksi.
ABSTRACTThe research was aimed to evaluate the performance of laying hens fed different calcium sources. Two hundreds of Isa Brown laying hens were used in this study. The hens were raised in individual battery cages units for 12 weeks. Four calcium source (limestone as a control, 5% limestone + 2.5% eggshells waste, 2.5% limestone + 5% eggshells waste and 7.5% eggshell waste) were used in feed experiment. A completely randomized design was applied, with 4 treatments and 5 replications. Each experimental unit consisted of 10 laying hens. The parameters measured were feed intake, protein intake, calcium intake, phosphorus intake, egg production, egg weight and feed conversion ratio. Results of the research showed that the calcium source had significantly effect on performance productions. The use of eggshell waste 7.5% significantly increased the feed intake, calcium intake, phosphorus intake, egg production and egg weight except for feed conversion ratio. The conclusion of this research was that the use of eggshell waste as calcium source of feed resulted in better performance than using limestone or mixed limestone with eggshell waste.