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Anim Biosci > Accepted Articles
DOI: https://doi.org/10.5713/ab.20.0833    [Accepted] Published online February 15, 2021.
Cnidoscolus aconitifolius leaf pellet can manipulate rumen fermentation characteristics and nutrient degradability
Pajaree Totakul1  , Maharach Matra1  , Sukruthai Sommai1  , Metha Wanapat1,* 
Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
Correspondence:  Metha Wanapat, Tel: +66-8-1932-4180, Fax: +66-4-3202-368, Email: metha@kku.ac.th
Received: 12 December 2020   • Revised: 11 January 2021   • Accepted: 30 January 2021
Chaya (Cnidoscolus aconitifolius) leaf has been found to be an important source of protein, vitamins, minerals, as well as phytonutrients. The present study aimed to evaluate the effect of Chaya leaf pellet (CHYP) with various level of protein of concentrate (CP) on rumen fermentation characteristics and nutrient degradability.
In an in vitro rumen fermentation study the dietary treatments were arranged according to a 3 × 5 factorial arrangement in a Completely randomized design (CRD), consisting of Factor A: three levels of CP of concentrate mixtures (14, 16 and 18 %CP, respectively) and Factor B: five levels of CHYP supplementation (at 0, 2, 4, 6 and 8% of dry matter substrates).
The gas production kinetics, fraction (a) and fraction (b) were lower (p<0.05) with an increasing CHYP addition. Additionally, the fraction (a + b) was found to yield a significant interaction (p<0.05) while the fraction (c) was not impacted by CHYP addition. However, in vitro DM degradability (IVDMD) was enhanced and interactive (p<0.05), using 16 %CP of concentrate with 6 and 8 %CHYP, when compared with 18 %CP in the non-addition. Additionally, the treatment with higher CP of the concentrate was higher in NH3–N concentration (p<0.001) and by CHYP supplementation group (p<0.05). Nevertheless, protozoal counts in the rumen were remarkably decreased (p<0.05) with increasing level of CHYP supplementation. Furthermore, rumen C2 concentration was lower (p<0.05) in the treatments with CHYP supplementation, while C3 was significantly increased and interactive (p<0.05) between levels of CP and CHYP supplementation especially at 8 %CHYP supplementation.
Based on this study, the results revealed CHYP as a promising feed supplement to enhance rumen fermentation and to mitigate methane production. However, in vivo feeding experiments should be subsequently conducted to elucidate the effect of CHYP supplementation on rumen fermentation, as well as ruminant production efficiency.
Keywords: Chaya Leaf; Rumen Fermentation; Protein Source; Fodder Shrub

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