UPM Institutional Repository

In vitro digestibility and gas production characteristics of four Napier (Pennisetum purpureum) cultivars as fresh fodder


Zailan, Mohamad Zaihan and Yaakub, Halimatun and Jusoh, Shokri (2016) In vitro digestibility and gas production characteristics of four Napier (Pennisetum purpureum) cultivars as fresh fodder. Malaysian Journal of Animal Science, 19 (2). pp. 95-106. ISSN 1394-3227


Napier grass was first introduced to Malaysia in the 1920?s and there were many cultivars introduced in Malaysia since 1950?s. However, there is a need to have comparative evaluation of these Napier cultivars so that definite recommendations can be made in the choice and management of the respective cultivars. The experiment was conducted to evaluate the in vitro digestibility and gas production characteristic of four Napier (Pennisetum purpureum) cultivars, namely Common, Silver, Red and Dwarf Napier. Common, Silver and Red Napier are classified as tall cultivars while Dwarf Napier is a short cultivar. Gas production was determined at 2, 4, 6, 8, 12, 24, 32, 36, 48, 72 and 96 h of incubation period and its kinetics was described using the equation p = a + b (1 ? e?ct). Dwarf Napier had the highest (P < 0.05) nutritive quality (16% CP; 75% IVDMD and 73% IVOMD) among the cultivars. Overall, tall cultivars were higher (P < 0.05) in NDF, ADF, and ADL content than Dwarf Napier cultivar. The potential gas production (A+B) at 96 h incubation period was higher (P < 0.05) in Dwarf Napier cultivar (65 mL/200 mg DM) compared to other tall cultivars (< 57 mL/200 mg DM). There were no significance differences (P > 0.05) in the rate of gas production (C) of Napier cultivars which ranged from 0.024 to 0.035 h-1. The metabolisable energy (ME) was significantly higher in Dwarf and Red Napier cultivars (8.7 MJ/kg DM) compared to Silver and Common Napier cultivars. The cumulative gas production within 32 h was highest (P< 0.05) in Red and Dwarf Napier cultivars. The total VFA concentration, acetic and butyric acid content of Napier cultivars (P>0.05) ranged from 52 to 73 mM, 88 to 70%, 6.2 to 6.8%, respectively.. Dwarf Napier cultivar had superior nutritional quality. Dwarf and Red Napier cultivars could be classified as high quality grasses due to their high digestibility, gas production and degradation rates compared to the other cultivars. The low quality of Common and Silver Napier cultivars is mainly reflected by the extensive lignification of their cell wall structure.

Download File

In vitro digestibility and gas production characteristics of four Napier .pdf

Download (6kB) | Preview

Additional Metadata

Item Type: Article
Subject: Napier cultivars; Nutritive quality
Divisions: Faculty of Agriculture
Publisher: Malaysian Society of Animal Production
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 27 Mar 2018 05:50
Last Modified: 27 Mar 2018 05:50
URI: http://psasir.upm.edu.my/id/eprint/54536
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item