摘要：Our previous study showed that the addition of water extracted beluntas leaf into drinking water could be used as an anti-stress and improved performance of broiler chicken. However, the addition was only up to 10% of drinking water. The objective of this experiment was to study whether the addition of sugar and water extracted beluntas leaf in levels higher than 10% of drinking water can give greater benefit on performances and meat cholesterol content of broiler. Two hundred sixteen DOCs CP707 strain were reared for four weeks in high stocking density of 15 birds/m2. The birds were subjected to experimental drinking waters with or without water extracted beluntas leaf (v/v) and sugar which is consisted of T1 (only drinking water), T2 (drinking water + commercial antistress), T3 (drinking water + 10% extract of beluntas leaf ), T4 (drinking water + 20% extract of beluntas leaf), T5 (drinking water + 40% extract of beluntas leaf), T6 (drinking water + 80% extract of beluntas leaf), T7 (drinking water + 40% extract of beluntas leaf + 1.6% sugar), and T8 (drinking water 80% extract of beluntas leaf + 3.1% sugar). The results showed that water extracted beluntas leaf addition higher than 10% significantly reduced (P < 0.05) body weight gain, final body weight, and increased (P < 0.05) feed conversion ratio. It is concluded that the addition of water extracted beluntas leaf more than 10% into drinking water cannot give greater benefit on performances as an antistress of broiler. Sugar addition cannot help the disadvantage due to the bitter taste of higher level of water extracted beluntas leaf addition.
其他摘要：Hasil penelitian sebelumnya menunjukkan bahwa ekstrak daun beluntas dapat ditambahkan ke dalam air minum sampai taraf 10%. Guna mendapat manfaat ekstrak daun beluntas secara maksimal maka tujuan dari penelitian ini adalah untuk mempelajari pengaruh penambahan ekstrak daun beluntas pada taraf lebih dari 10% ke dalam air minum terhadap performa dan kolesterol daging broiler. Penambahan gula dilakukan pula untuk mengatasi rasa sepat akibat semakin tingginya taraf pemberian ekstrak daun beluntas agar tidak ditolak oleh ayam. Dua ratus enam belas DOC strain CP707 dipelihara selama 4 minggu dengan kepadatan 15 ekor/m2 . Anak-anak ayam tersebut diberi perlakuan air minum yang terdiri atas T0 (hanya air minum), T1 (air minum + anti stress komersial), T2 (air minum + 10% ekstrak daun beluntas), T3 (air minum + 20% ekstrak daun beluntas), T4 (air minum + 40% ekstrak daun beluntas), T5 (air minum + 80% ekstrak daun beluntas), T6 (air minum + 40% ekstrak daun beluntas + 1,6% gula), dan T7 (air minum + 80% ekstrak daun beluntas + 3,1% gula). Hasil memperlihatkan bahwa pemberian ekstrak beluntas lebih dari 10% menurunkan (P<0.05) bobot badan akhir, pertambahan bobot badan, dan memperburuk rasio konversi pakan. Dapat disimpulkan bahwa penambahan ekstrak daun beluntas kedalam air minum pada taraf yang lebih tinggi dari 10% tidak dapat memberikan hasil yang lebih baik meskipun telah ditambah gula, khususnya pada taraf 40% dan 80%.
