PENGARUH PENAMBAHAN PROBIOTIK Bacillus subtilis DALAM PAKAN TERHADAP PRODUKSI KARKAS AYAM BROILER JANTAN

EKO PUJI HANANTO, Prof. Dr. Ir. Zuprizal, DEA.

2014 | Skripsi | ILMU DAN INDUSTRI PETERNAKAN

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian probiotik Bacillus subtilis sebagai bahan aditif pakan terhadap produksi karkas ayam broiler jantan. 160 ekor ayam broiler jantan umur sehari strain New Lohmann (MB-202) yang dibagi ke dalam 4 perlakuan dan setiap perlakuan terdiri dari 4 replikasi sedangkan tiap replikasi terdiri atas 10 ekor ayam. Pemberian pakan dan minum dilakukan secara ad libitum. Pemeliharaan ayam dilakukan selama 42 hari. Perlakuan pakan pada penelitian yaitu R1= ransum basal (kontrol), R2= R1 + 250 g probiotik komersial A/ton ransum basal, R3= R1 + 500 g probiotik komersial B/ton ransum basal, R4= R1 + 500 g probiotik komersial C/ton ransum basal. Data yang diambil meliputi bobot potong, bobot karkas, persentase karkas, bobot daging, bobot tulang, dan meat bone ratio. Data yang diperoleh dianalisis dengan analisis variasi rancangan acak lengkap pola searah, jika terdapat perbedaan yang nyata maka dilanjutkan dengan uji ortogonal kontras. Hasil penelitian menunjukkan bahwa pemberian berbagai probiotik Bacillus subtilis berpengaruh tidak signifikan terhadap bobot potong, bobot karkas, persentase karkas, bobot daging, bobot tulang, dan meat bone ratio ayam broiler tetapi menurunkan feed intake ayam broiler secara signifikan. Dari hasil penelitian ini dapat disimpulkan bahwa penambahan probiotik Bacillus subtilis sampai level 500 g/ton mampu mempertahankan produksi karkas dan daging ayam broiler jantan dengan feed intake lebih rendah. Kata kunci : Bacillus subtilis, Karkas, Ayam broiler

The experiment was conducted to study the effect of Bacillus subtilis probiotics addition as feed additive on carcass production of male broilers chicken. 160 day-old chick male broilers of New Lohmann (MB- 202) strain were divided into 4 treatments and each treatment consisted of 4 replications. Each replication consisted of 10 chickens. Feed and drink was given in ad libitum. Chickens raised in 42 days. Feed treatments on this experiment were R1= basal ration (control), R2= R1 + 250 g commercial probiotics A/ton basal ration, R3= R1 + 500 g/ton commercial probiotics B/ton basal ration, R4= R1 + 500 g commercial probiotics C/ton basal ration. Data observed were body weight, carcass weight, carcass percentage, meat weight, bone weight, and meat bone ratio. Data were analyzed by one-way completely random design variance analysis, if there was a significant differences then extended with orthogonal contrast test. The results showed that various Bacillus subtilis probiotics did not significant affect to the body weight, carcass weight, carcass percentage, meat weight, bone weight, and meat bone ratio of male broiler chickens but decreased male broiler chickens feed intake significantly. The research results was concluded that addition of Bacillus subtilis probiotics to the level 500 g /ton are able to maintained carcass and meat production of male broiler chickens with lower feed intake. Kata kunci : Bacillus subtilis, Carcass, Broiler chicken

Kata Kunci : Bacillus subtilis, Karkas, Ayam broiler