Sugiarto Achmanu, D. Rosyidi, A. Hasanuddin
Two experiments were conducted to evaluate the quality of centrifuged rumen fill of cattle in broiler diets. The first experiment was conducted to investigate the nutritional profile of centrifuged rumen fill and its effect on protein digestibility and apparent metabolizable energy corrected for nitrogen (AMEn) of the diet with different levels of centrifuged rumen fill (CRC). A total of 100 three weeks old-male broiler chickens were used and kept in the metabolism cages for two weeks. The experimental diets were RC0: control diet; RC1: control diet + 1% centrifuged rumen fill; RC2: control diet + 2% centrifuged rumen fill; RC3: control diet + 3% centrifuged rumen fill; RC4: control diet + 4% centrifuged rumen fill. Fecal discharges were collected for three concecutive days from 15 experimental cages. The feeds were offered ad-libitum and water was available at all times. Proximate and fibre fractions (lignin, neutral detergent fibre and acid detergent fibre) of the CRC were determined. Parameters measured were protein and metabolizable energy of the feed. In the second experiment, a total of one hundred male broiler chicks were used. The birds were kept for 42 days and fed the same experimental diets as in experiment 1. The diets and water were offered ad-libitum. A completely randomised design was applied in these two studies with 5 experimental diets and 3 replicate cages in experiment 1, and 5 experimental diets with 4 replicate cages in experiment 2. Protein content and gross energy in the diets were increased due to addtion of centrifuged rumen fill in the diet. The birds fed the diets containing centrifuged rumen fill had higher protein digestibility, AMEn, body weight gain and breast meat percentage. Feed conversion ratio was better in birds fed the diets supplemented with centrifuged rumen fill.
University of Tadulako, Palu, Indonesia; Brawijaya University, Malang, Indonesia
