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| Shioya Shigeru | |
| Head, Laboratory of Animal Environment Physiology, | |
| Department of Animal Production, | |
| Kyushu National Agricultural Experiment Station | |
| 2421 Suya Nishigoshi, Kikuchi, Kumamoto, 861-1192 Japan | |
| Tel: +81-96-242-1150 Fax: +81-96-249-1002 | |
| E-mail: shioya@knaes.affrc.go.jp |
3,654,000 Yen
In order to develop the nutritional management technologies for controlling CH4 emissions from ruminants in Southeast Asia, the following two experiments using Holstein cows have been conducted.
1) In the experiment 1, it was examined about the influence which nutritive value of tropical grass exerted on methane emission from ruminants. Four of heifer or dry cow were fed sudangrass silage, bahiagrass hay and rice straw, nutritive value of those grasses were measured. And, the amount of methane formation was measured by respiration test. TDN content in sudangrass, bahiagrass and rice straw were 62, 55, 54% and methane emission per dry matter intake in sudangrass, bahiagrass and rice straw were 31.3, 37.7 and 36.6L/day, respectively.
2) In the experiment 2, it was examined about the influence of additive sweet potato for milk production and methane emission from cow. Four milking cows (less than l0kg of milk production) that milk productivity is the same as Southeast Asian dairy cows were fed bahiagrss hay or bahiagrass hay and sweet potato. When a potato was added to hay, milk production, milk element and dry matter intake showed a tendency of increasing. And, methane emission from cow decreased by adding a potato on the 146L/ day from the 260L/ day. Furthermore, methane emission per milk productions decreased to 25.5L by adding a potato from 48L.
From the above results, It considered that it was effective to add kind of potato to roughage with using the high amount of nutrition in order to control methane emission from cattle in Southeast Asia area by nutritional management.
Ruminants, Southeast Asia, Methane, Nutrition, Hot Environment