. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. 794 Batzli t Co. 20 40 60 Digestibility (%) Fig. 2. Comparison of total intake of energy (solid points and solid line) to intake of digestible energy (open points and dashed line) in relation to digestibility of forage by Microtus ochrogaster, M. calijornicus, and Lemmus sibiricus. Circled points represent unpalatable food; vertical lines give 95% confidence intervals (after Batzli and Cole, 1979). The compensatory increase of intake for less digestible food is well known for ruminants (Ulyatt, 1973), laboratory rats (Adolf, 1
. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. 794 Batzli t Co. 20 40 60 Digestibility (%) Fig. 2. Comparison of total intake of energy (solid points and solid line) to intake of digestible energy (open points and dashed line) in relation to digestibility of forage by Microtus ochrogaster, M. calijornicus, and Lemmus sibiricus. Circled points represent unpalatable food; vertical lines give 95% confidence intervals (after Batzli and Cole, 1979). The compensatory increase of intake for less digestible food is well known for ruminants (Ulyatt, 1973), laboratory rats (Adolf, 1947), and laboratory mice (Dalton, 1963). Of course, lower di- gestibility of forage must be compensated by greater intake if the animal is to survive. Although the size of a single meal for voles may be limited by gastro-intestinal fill (Kendall et al., 1978), total daily intake appears to be adjusted depending upon digestible en- ergy or nutrients. For many foods intake may compensate com- pletely so that the consumption of digestible energy and dry matter remains relatively constant (Fig. 2). But some foods, usually those of low quality, simply are not palatable enough to be taken in large amounts. Thus, although mosses may form up to 40% of the diet of L. sibiricus, they are poorly digested compared to monocotyledons (23% DDM and 33-37% DDM, respectively), and voluntary intake of mosses alone is not sufficient to maintain the animals. Similarly, M. ochrogaster does not consume enough bluegrass to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tamarin, Robert H; American Society of Mammalogists. [Stillwater, Okla. ] : American Society of Mammalogists ; Shippensburg, Pa. : distributed by Vertebrate Museum, Shippensburg University
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectrodents
