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 (320Kb)
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| Fuminori Terada | |
| Head | |
| Energy Metabolism Laboratory, Department of Animal Nutrition, | |
| National Institute of Animal Industry, | |
| Ministry of Agriculture, Forestry and Fisheries | |
| Norinkenkyu-Danchi P.O.Box 5, Tsukuba, Ibaraki 305, Japan | |
| Tel: +81-298-38-8655, Fax: +81-298-38-8606 | |
| Email: sakura04@niai.affrc.go.jp |
3,904,000 Yen
(FY 1999; 3,900,000 Yen)
In order to improve the accuracy of estimation methods of methane (CH4) and nitrous oxide (N2O) emission from the animal production system in Japan and Asia, three experiments were conducted. The obtained findings were as follows; 1) Methane emission from goats measured by open circuit respiration chambers fed low quality rice straw based diets was 30.4±7.5 L per day per kg dry matter intake (DMI), and the value was higher than that of good quality grass based diets. Methane emission was increased by ammonia treatment of rice straw, but there was no significant effect of urea addition. Urea treatment of rice straw increased the digestibility of diet and reduced (p>0.05) CH4/DMI and CH4/digestible organic matter intake (DOMI). 2) Methane emission from buffaloes fed Ruzi grass hay and different levels of soybean meal was measured using facemask system. Buffaloes produced a mean of 18.8 L/kg DMI CH4, and it was equivalent to 4.2% of gross energy intake. 3) Using waste treatment process swine waste emitted 5-15g CH4 and l-4g N2O per 1 m3 and the CH4 and N2O emissions could be reduced with adequate treatment at more than 40L m-3min-1 aeration.
Ruminants, Methane, Nitrous oxide, Waste, Swine