Polyorach, Sineenart

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Polyorach, Sineenart
Alternative Name
Polyorach, S.
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Email
sineenart.po@kmitl.ac.th

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    Comparison of Cassava Chips and Winged Bean Tubers with Various Starch Modifications on Chemical Composition, the Kinetics of Gas, Ruminal Degradation, and Ruminal Fermentation Characteristics Using an In Situ Nylon Bag and an In Vitro Gas Production Technique
    (2023-05-01)
    Unnawong, Narirat
    ;
    Suriyapha, Chaichana
    ;
    Khonkhaeng, Benjamad
    ;
    Chankaew, Sompong
    ;
    Rakvong, Teppratan
    This research assessed the impact of cassava chips (CSC) and winged bean tubers (WBT) with various starch modification methods on the chemical composition, ruminal degradation, gas production, in vitro degradability, and ruminal fermentation of feed using an in situ and in vitro gas production technique. Experimental treatments were arranged for a 2 × 5 factorial, a completely randomized design with two sources of starch and five levels of modification treatments. Two sources of starch were CSC and WBT, while five modification treatments of starch were: no modification treatment, steam treatment, sodium hydroxide (NaOH) treatment, calcium hydroxide (CaOH2) treatment, and lactic acid (LA) treatment. The starch modification methods with NaOH and CaOH<inf>2</inf> increased the ash content (p < 0.05), whereas the crude protein (CP) content was lower after treatment with NaOH (p < 0.05). Steam reduced the soluble fraction (a) and effective dry matter degradability of WBT in situ (p < 0.05). In addition, the WBT steaming methods result in a lower degradation rate constant in situ (p < 0.05). The degradation rate constants for the insoluble fraction (c) in the untreated CSC were higher than those of the other groups. Starch modification with LA reduced in vitro dry matter degradability at 12 and 24 h of incubation (p < 0.05). The starch modification method of the raw material showed the lowest pH value at 4 h (p < 0.05). The source of starch and starch modification methods did not influence the in vitro ammonia nitrogen concentrations, or in vitro volatile fatty acids. In conclusion, compared to the CSC group and untreated treatment, treating WBT with steam might be a more effective strategy for enhancing feed efficiency by decreasing or retarding ruminal starch degradability and maintaining ruminal pH.
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    In Vitro Evaluation of Winged Bean (Psophocarpus tetragonolobus) Tubers as an Alternative Feed for Ruminants
    (2023-02-01)
    Suntara, Chanon
    ;
    Sombuddee, Napudsawun
    ;
    Lukbun, Saowalak
    ;
    Kanakai, Natdanai
    ;
    Srichompoo, Pachara
    The purpose of the current study is to determine the effects of the replacement of cassava chips with winged bean (Psophocarpus tetragonolobus) tubers (WBTs) on gas production parameters, in vitro degradability, and ruminal fermentation in ruminant diets. The study was performed using a 3 × 4 factorial arrangements and was designed using a completely random method. Factor A employed three various roughage sources that were frequently used by locals to feed ruminants: Oryza sativa L. (a1), Brachiaria ruziziensis (a2), and Pennisetum purpureum (a3). The levels of WBTs substitutions for cassava chips at 0%, 33%, 66%, and 100% in the diet were selected as factor B. The experiment’s findings revealed that replacing the cassava chips in the diet with WBTs at levels of 66 and 100% enhanced the fermentation process by producing a high gas volume at 96 h when Ruzi grass (RZ) was used as the main source of roughage (p < 0.01). The interaction between the roughage source and WBTs showed that organic matter (OM) degradability improved markedly in the case of RZ grass in combination with WBTs at all levels. Both the total volatile fatty acids (TVFAs) at 8 h of incubation and the average value decreased when a complete substitution of casava chips with WBT (WBT 100%) was employed or when employing rice straw as the main source of roughage (p < 0.01). There was no interaction between WBTs and roughage source on the ammonia–nitrogen (NH<inf>3</inf>-N) concentration (ml/dL) and rumen microbial count (p > 0.05). In summary, WBTs can be used effectively when combined with grass (Ruzi and Napier). The implementation of WBTs as a novel alternative feed may effectively replace cassava chips without affecting rumen function.
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    Winged bean tuber as a novel alternative to corn meal in concentrate mixture in Thai native beef cattle diets
    (2025-12-01)
    Unnawong, Narirat
    ;
    Cherdthong, Anusorn
    ;
    Chankaew, Sompong
    ;
    Rakvong, Teppratan
    ;
    Suriyapha, Chaichana
    Background: In times of high feed costs and severe feed competition, it is crucial to explore alternative feedstuffs. Identifying alternative feed sources is essential for developing cost-effective and sustainable solutions to address challenges in livestock production and economic constraints. This study evaluates the effects of replacing corn with different levels of winged bean tuber (WBT) in concentrate mixtures on feed intake, feed utilization, and rumen fermentation in Thai native beef cattle. Animals were randomly assigned to a 4 × 4 Latin square design, with WBT replacing corn in the concentrate mixture at levels of 0, 33, 67, and 100%. Results: Replacing corn with WBT (0–100%) in the concentrate diet did not affect (p > 0.05) dry matter, organic matter, or crude protein intake. However, neutral detergent fiber (NDF) and acid detergent fiber (ADF) intake increased linearly (p < 0.05) at 67% and 100% replacement levels. Although nutrient digestibility remained unchanged, ruminal pH, ammonia-nitrogen concentration, and protozoal population increased linearly (p < 0.05) at 67% and 100% WBT replacement levels. However, WBT replacement did not significantly affect blood urea nitrogen (BUN) concentrations. As the level of WBT increased in the concentrate diet, the concentration of propionic acid (C3) increased, but the amount of acetic acid (C2) and the ratio of C2 to C3 decreased linearly (p < 0.05) without shifting the acetic concentration. Additionally, replacing corn with WBT in the concentrate diet had no effect on nitrogen balance. Conclusion: The WBT can be used as an alternative for corn grain up to 100% in ruminant diets without changing feed digestibility, the BUN, and nitrogen balance. It can also improve the fermentation characteristics in the rumen.