Aspergillus terreus treated rice straw suppresses methane production and enhances feed digestibility in goats.

Autor: Mohd Azlan P; Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Malaysia.; Animal Science Research Centre, Malaysian Agricultural Research and Development Institute, 86009, Kluang, Johor, Malaysia., Jahromi MF; Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Malaysia.; Agriculture Biotechnology Research Institute of Iran, East and North-East Branch, Mashhad, 844, Iran., Ariff MO; Faculty of Veterinary Medicines, Universiti Putra Malaysia, 43400, Serdang, Malaysia., Ebrahimi M; Faculty of Veterinary Medicines, Universiti Putra Malaysia, 43400, Serdang, Malaysia., Candyrine SCL; Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Malaysia.; Faculty of Sustainable Agriculture, Universiti Malaysia Sabah, 90509, Sandakan, Malaysia., Liang JB; Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Malaysia. jbliang@upm.edu.my.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2018 Mar; Vol. 50 (3), pp. 565-571. Date of Electronic Publication: 2017 Nov 17.
DOI: 10.1007/s11250-017-1470-x
Abstrakt: The objectives of this study were to test the efficacy of producing lovastatin in rice straw treated with Aspergillus terreus in larger laboratory scale following the procedure previously reported and to investigate the effectiveness of the treated rice straw containing lovastatin on methane mitigation in goats. The concentration of lovastatin in the treated rice straw was 0.69 ± 0.05 g/kg dry matter (DM) rice straw. Our results showed that supplementation of lovastatin at 4.14 mg/kg BW reduced methane production by 32% while improving the DM digestibility by 13% (P < 0.05) in goats fed fermented rice straw compared to those fed untreated rice straw. Populations of total methanogens and Methanobacteriales species were significantly reduced (P < 0.05) while the population of total bacteria and Ruminococcus albus were increased in the treatment group (P < 0.05). Our results demonstrated that lovastatin in the treated rice straw acted specifically on the methanogens by inhibiting the activity of HMG-CoA reductase in the methanogens' cell membrane biosynthesis pathway and thus the growth of rumen methanogens as previously reported. This study provides a simple yet practical approach to mitigate enteric methane production particularly in the developing countries which depend heavily on the use of agro-biomass such as rice straw to feed their ruminant animals.
Databáze: MEDLINE
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