SHORT COMMUNICATION
Impact of the methane-suppressing feed additive
myristic acid on energy and calcium balance of sheep
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Institute of Animal Science, Animal Nutrition, Swiss Federal Institute of Technology Zurich,
ETH Zentrum/LFW,
CH-8092 Zurich, Switzerland
Publication date: 2004-08-30
Corresponding author
A. Machmüller
Institute of Animal Science, Animal Nutrition, Swiss Federal Institute of Technology Zurich,
ETH Zentrum/LFW,
CH-8092 Zurich, Switzerland
J. Anim. Feed Sci. 2004;13(Suppl. 1):151-154
KEYWORDS
ABSTRACT
The impact of feeding myristic acid (C14:0; 50 g/kg DM) to sheep was investigated in a 6×6
Latin square arrangement. C14:0 was supplemented to two control diets (forage:concentrate ratios
of 1:1.5 and 1:0.5) which were adjusted to different dietary Ca contents (4.2 or 9.0 g/kg DM). In
combination with the concentrate-based diet, C14:0 reduced methane energy loss by more than 50%
but reduced Ca availability of the animals while the additional Ca supply improved Ca and energy
retention. Supplementing C14:0 to the forage-based diet did not affect Ca availability and resulted
in highest feed energy utilization.
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