Polyorach, Sineenart

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Polyorach, Sineenart
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Polyorach, S.
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sineenart.po@kmitl.ac.th

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    Item type:Publication,
    Effect of Delonix regia seed meal supplementation in Thai native beef cattle on feed intake, rumen fermentation characteristics and methane production
    (2017-10-01)
    Supapong, C.
    ;
    Cherdthong, A.
    ;
    Seankamsorn, A.
    ;
    Khonkhaeng, B.
    ;
    Wanapat, M.
    The aim of this research was to investigate the effect of supplementing Delonix regia (DR) seed meal on feed intake, digestibility, rumen fermentation, nitrogen balance and CH<inf>4</inf> production in Thai native beef cattle fed on rice straw. Four Thai native beef cattle with the initial body weight (BW) of 100 ± 5.0 kg were randomly assigned according to a 4 × 4 Latin square design to receive DR seed meal supplementation at 0, 90, 180 and 270 g/d. The present results revealed that the total intake (g/kg BW<sup>0.75</sup>) was significantly increased with the inclusion of dry matter (DM) seed meal at 270 g (P < 0.05). DM and OM digestibility were decreased when increasing DR seed meal levels (P < 0.05). Ruminal NH<inf>3</inf>-N concentration increased in beef cattle receiving DR seed meal. Supplementation of DR seed meal did not alter fungal zoospores’ concentration (P > 0.05), whereas the protozoal population was at 0, 4 h post feeding, and the mean values reduced when increasing the levels of DR seed meal supplemented (P < 0.05). The concentration of propionic acid at 4 h post feeding and its average concentration were significantly highest when 270 g DR seed meal was supplemented (P < 0.05). Estimation of CH<inf>4</inf> concentrations and CH<inf>4</inf> per dry matter intake were found reduced when increasing its DR seed meal concentration. In addition, N absorption, N retention and proportion of N retention to N intake were enhanced when 270 g DR seed meal was supplemented (P < 0.05). Thus, the inclusion of DR seed meal at 270 g/d resulted in improving total feed intake, rumen fermentation and N balance whereas there was reduced DM digestibility, protozoal population and CH<inf>4</inf> production in beef cattle fed rice straw base.