Nutritive Value of Mulato II Hybrid ('Brachiaria' spp) for Cattle: Effect of Cutting Interval on Chemical Composition and In Situ Rumen Degradability

2014

Seng, Mom

Mob, Serey

Nolan, John V

Savage, Darryl

Editor(s): Subandriyo, Kusmartono, Krishna Agung Santosa, Edi Kurnianto, Agung Purnomoadi, Akhmad Sodiq, Komang G Wiryawan, Siti Darodjah, Ismeth Inounu, Darmono, Atien Priyanti, Peter Wynn, Jian Lin Han, Jih Tay-Hsu, Zulkifli Idrus

Conference Publication

en

Publication

Indonesian Society of Animal Sciences

Yogyakarta, Indonesia

une:17002

The grass cultivar Mulato II ('Braichairia ruziziensis' x 'B. decumbens' x 'B. brizantha') was evaluated as a feed source for Cambodian cattle by chemical analysis and by the nylon bag in situ incubation technique. Evaluations were undertaken for periods of re-growth of 5, 7 and 9 weeks. Total forage yield increased (122, 216 and 233 kg DM/ha per week, respectively) as the period of regrowth increased, however nutritive value for cattle was compromised. Crude protein concentration in cut forage decreased from 9.6% to 6.7% DM and crude fibre concentration increased from 24.4% to 28.9% DM with increasing regrowth period (i.e. with advancing plant maturity). Irrespective of cutting interval, CP of leaf was always higher and CF lower than of stem, while the corresponding values for whole forage were intermediate. The effective organic matter degradability of Mulato II (assumed rumen turnover 0.04/h) decreased (0.56, 0.49 and 0.45 at 5, 7 and 9 weeks of re-growth, respectively) as period of regrowth increased. The mean washout fraction was highest for leaf (0.16) and lowest for stem (0.10), with whole forage being intermediate (0.13). Effective organic matter degradability was highest for leaf (0.54) and lowest for stem (0.45), with whole forage again being intermediate (0.51).

link

Sustainable Livestock Production in the Perspective of Food Security, Policy, Genetic Resources and Climate Change: Proceedings of the 16th AAAP Animal Science Congress, v.II, p. 433-436

9786028475877

433

436