Kecernaan Fraksi Serat Ransum Mengandung Tepung Ulva lactuca dan Gracilaria verrucosa Secara In Vitro

Abstract

Penelitian ini bertujuan menganalisis pengaruh suplementasi tepung Ulva lactuca dan Gracilaria verrucosa terhadap kecernaan fraksi serat secara in vitro. Penelitian menggunakan rancangan acak kelompok dengan 4 perlakuan dan 5 ulangan berdasarkan waktu fermentasi dan sumber cairan rumen. Perlakuan terdiri atas kontrol (K): rumput gajah:daun sawit:konsentrat=30:30:40, K mengandung U. lactuca 4%, K mengandung G. verrucosa 4%, dan K mengandung U. lactuca 2% dan G. verrucosa 2%. Peubah yang diamati meliputi kecernaan bahan kering, kecernaan bahan organik, dan kecernaan fraksi serat. Data dianalisis menggunakan analysis of variance (ANOVA) dan uji Duncan. Hasil menunjukkan perlakuan kombinasi nyata (P<0,05) meningkatkan kecernaan NDF dan hemiselulosa serta sangat nyata (P<0,01) menurunkan residu lignin. Suplementasi U. lactuca 4% nyata (P<0,05) meningkatkan kecernaan selulosa, sedangkan kecernaan ADF nyata (P<0,05) menurun pada seluruh perlakuan. Kecernaan bahan kering dan bahan organik relatif sama antar perlakuan. Dapat disimpulkan bahwa perlakuan kombinasi merupakan perlakuan terbaik dalam meningkatkan kecernaan fraksi serat dan menurunkan residu lignin.

This study aimed to analyze the effect of supplementing Ulva lactuca and Gracilaria verrucosa meal on the in vitro fiber fractions digestibility. The study used a group randomized design with 4 treatments and 5 replicates based on fermentation time and rumen fluid source. The treatments consisted of control (K): elephant grass:oil palm fronds:concentrate=30:30:40, K containing 4% U. lactuca, K containing 4% G. verrucosa, and K containing 2% U. lactuca and 2% G. verrucosa. The observed variables were dry matter digestibility, organic matter, and fiber fraction digestibility. Data were analyzed using analysis of variance (ANOVA) and Duncan's multiple range test. The results showed that a combination treatment significantly (P<0.05) increased NDF and hemicellulose digestibility and very significantly (P<0.01) reduced lignin residue. The supplementation of 4% U. lactuca significantly (P<0.05) increased cellulose digestibility. However, ADF digestibility significantly (P<0.05) decreased across all treatments. Dry matter and organic matter digestibility were relatively similar across treatments. It can be concluded that the combination treatment is the most effective treatment for improving the fiber fraction digestibility and reducing lignin residue.