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| heart rate monitor, uses, bia, thermacare, tai, high fat diet, body fat scales & monitors, and easily, fold, aqua, heatzone, high protein diet, orbitrek, accufitnessaccu measure fat trac ii digital skinfold caliper, women's health, athletic, sportline, accurate, | The cyclopropane method has been validated twice on small animals: 10 laboratory rats (Lesser et al. 1952) and 6 pond turtles (Trachemys scripta; Henen 1991), but not on birds. The body fat device percentage error in the estimate of the rats' FM was 5.6 (x(bar) = 13.2% of body mass, range 8.1 to 18.9%), and the estimate of the pond turtles' FM was only 10%, despite body fat device the low FMs (0.7 to 3.5% of body mass) in Henen's (1991) study. Because these errors are smaller than those reported in most studies that have body fat device evaluated other nonlethal methods of estimating body fat in birds, we questioned whether this method would be as accurate for birds. |
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| Continue article Advertisement The most accurate method of determining FM is extraction with a solvent such as petroleum ether, but the technique requires killing the animal. Because it is undesirable to kill subject animals, researchers have evaluated several nonlethal (and typically noninvasive) methods of estimating body fat of birds. These methods include total body accufitnessaccu measure fat trac ii digital skinfold caliper electrical conductivity (TOBEC; Skagen et al. 1993), fat scoring (Krementz and Pendleton accufitnessaccu measure fat trac ii digital skinfold caliper 1990, Rogers 1991), and morphological variables such as body mass and wing length (see Blem 1990). Another method, accufitnessaccu measure fat trac ii digital skinfold caliper which is nonlethal and noninvasive, uses the absorption of cyclopropane gas into an animal's body to estimate FM. |
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