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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0069    [Accepted] Published online August 23, 2019.
Effects of replacement of para-grass with oil palm compounds on body weight, food intake, nutrient digestibility, rumen functions and blood parameters in goats
C. Buranakarl1,*  , S. Thammacharoen1, S. Semsirmboon1, S. Sutayatram1, S. Chanpongsang2, N. Chaiyabutr1, K. Katoh3
1Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunant Rd., Pathumwan, Bangkok, 10330,Thailand
2Department of Animal Husbandry, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunant Rd., Pathumwan, Bangkok, 10330,Thailand
3Division of Functional and Developmental Science of Livestock Production, Graduate School of Agriculture, Tohoku University, 468-1 Aoba Aramaki, Aoba-ku, Sendai, 981-0845 Japan
Correspondence:  C. Buranakarl, Tel: +662-218-9747, Fax: +662-252-0737, Email: bchollad@chula.ac.th
Received: 28 January 2019   • Revised: 14 May 2019   • Accepted: 11 August 2019
s: The aim of the present study was to investigate the beneficial effects of dietary supplementation with oil palm frond (leaf) (OPF) with and without oil palm meal (OPM) on nutrient intake and digestibility, ruminal fermentation and growth performance in goats.
Six female crossbred goats were fed for 28 days of 3 diet treatments; 100 % para-grass (T1); 50 % para-grass + 50 % OPF (T2), and 30 % para-grass + 50 % OPF + 20 % OPM (T3). Body weight, rectal temperature (RT), respiratory rate (RR) and urine volume, food intake (FI), dry matter intake (DMI) and water intake (WI) were measured daily. Nutrient digestibility was determined from five consecutive days of last week in each diet. Ruminal fluid, urine and blood were collected at the end for determination of rumen protozoa and VFA contents, urinary allantoin excretion, blood cell count and chemistry profiles.
Goats fed T2 and T3 showed higher dry matter and nutrients intakes while protein digestibility was suppressed compared with those for T1. Crude fat digestibility declined in T2 but maintained after adding the OPM (T3). High fat intake by giving OPF and OPM corresponded to a higher ruminal acetate/propionate ratio (C2/C3) and serum cholesterol level. An increased urinary allantoin/creatinine ratio was found in T2 and T3 compared with T1, implying an increased number of ruminal microbes.
Increased dry matter intake in T2 and T3 suggested that oil palm by-products are partly useful as a replacement for para-grass in goats. Replacement with the by-products increased plasma cholesterol level, which suggested that these products are a useful energy source. Changes in rumen parameters suggested an increased microbial number and activity suitable for acetate production. However, the limited digestibility of protein implies that addition of high protein feeds may be recommended to increase body weight gain of goats.
Keywords: Goat; Nutrient Digestibility; Oil Palm Frond; Oil Palm Meal; Ruminal Fermentation

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