METHANE SUPPRESSION BY CALCIUM SOAPS OF STEARIC, OLEIC AND LINOLEIC ACID MIXTURES IN CATTLE

Nishida, Takehiro and Kurihara, M and Purnomoadi, Agung and Terada, F. and Shibata, M. (1997) METHANE SUPPRESSION BY CALCIUM SOAPS OF STEARIC, OLEIC AND LINOLEIC ACID MIXTURES IN CATTLE. Proceedings of the 14th Symposium on Energy Metabolism of Farm Animal . pp. 379-382. ISSN 0 85199 276 5

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Abstract

Summary Two types of calcium soaps of fatty acids (Ca-FA) were used; Ca-FA-I (C 18:0 17.0%, C18:1 65.0%) and Ca-FA-2 (CI8:0 20.0%, CI8:140.0%, C18:2 35.0%). In Expt 1 four dry cows were fed Italian ryegrass hay and concentrate as basal diet (BD). Treatments were BD, BD + Ca-FA-l (300g), BD + Ca-FA-l (600g) or BD + Ca-FA-2 (600g). In Expt 2 four lactating cows were fed bahiagrass hay and concentrates with or without the Ca-F A-2 supplements (500g). In Expt 1 there were no significant differences in NDF digestibility by feeding Ca-F A. Methane production per dry matter intake (DMI) in dry cows tended to decrease about 7-9% (17-23 litres/day) by feeding Ca-F A but no effects of degree of saturation and amount of Ca-F A fed were observed. In Expt 2 DMI and digestibilities of dry matter (DM) and crude protein (CP) were not affected by feeding Ca-FA. Methane suppression in lactating cows was about 4% (22 litres/day/kg DMI). From the above results, it is concluded that feeding 300-600 g/day of Ca-F A is effective in suppressing methane production without reduction of productivity. Key words: Methane production, calcium soaps, cows, digestibility.

Item Type:Article
Subjects:S Agriculture > S Agriculture (General)
S Agriculture > SF Animal culture
Divisions:Faculty of Animal and Agricultural Sciences > Department of Animal Agriculture
ID Code:16598
Deposited By:Mr. Produksi FP Admin
Deposited On:13 Jul 2010 15:18
Last Modified:13 Jul 2010 15:18

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