![]() Magomedov, M.-R and Subbotin, A.E., Study of the feeding intensity of jerboas, Zool. Magomedov, M.-R.D., and Omarov K.Z., Feeding intensity and energy needs of the Radde hamster in different periods of life, Ekologiya, 1994, no. ![]() and Murtazaliev R.A, The influence of grazing on the productivity and structure of vegetation of pasture ecosystems of the Terek–Kuma lowland, Ar-id. and Akhtaev, M.-Kh.R., Feeding intensity and food and energy requirements in the tamarisk gerbil, Zool. Magomedov, M.-R.D., Study of the feeding intensity of the lesser ground squirrel Citellus pygmaeus, Zool. MacDonald, P., Edwards, R., and Greenhalge, J., Pitanie zhivotnykh (Nutrition of Animals), Moscow: Kolos, 1970. Khokhlova, I.S., Kam, M., and Degen, A.A., A small gerbil that maximizes energy intake from low-energy food, J. Heusner, A.A., Size and pover in mammals, J. Zaitseobraznye i gryzuny (Mammals of the Fauna of Russia and Adjacent Territories. and Erbaeva, M.A., Mlekopitayushchie fauny Rossii i sopredel’nykh territorii. and Cork, S.G., Use of fibrous diets by small herbivores: how far the rule be “bent”?, Trends Ecol. and Van Soest, P.J., A nutritional explanation for body-size patterns of ruminant and nonruminant herbivores, Am. ![]() 223–234.Ĭlauss, M., Schwarm, A., Ortmann, S., Streich, W.J., and Hummel, J., A case of non-scaling in mammalian physiology? Body size, digestive capacity, food intake, and ingesta passage in mammalian herbivores, Comp. and Magomedov, M.-R.D., Nutritional value and dynamics of food resources as a factor in the state of populations of herbivorous mammals, Zool. and Lopatin, V.N., Relationship between food intake and body size in herbivorous mammals, Zh. ![]() and Kuznetsov, G.V., Study of the intensity of food consumption by rodents, Zool. and Khashaeva, M.G., Assimilation of green plant food by rodents of different food specializations depending on the phase of vegetation of food plants, Zool. 1726–1732.Ībaturov, B.D., Pitanie i kormovye resursy dikikh rastitel’noyadnykh mlekopitayushchikh v stepnykh ekosistemakh (Foraging and Food Resources of Wild Herbivorous Mammals in Steppe Ecosystems), Moscow: KMK, 2021.Ībaturov, B.D. Consequently, in nature, young animals should be more demanding for food quality, and therefore, any changes in the quantity and quality of food resources will primarily affect the condition and survival of young individuals.Ībaturov, B.D., On determining the intensity of food consumption and development of food resources by herbivorous mammals, Zool. Considering that the relative energy requirements of young gerbils are higher, while the absolute values of their nutrition are lower than those of adults, they need more nutritious foods in comparison with adults to ensure an energy balance. The relative level (per 10 g of body weight) of food intake is 1.1–1.3 times, and the relative energy requirements are 1.2–1.5 times higher in young animals than in adults. The absolute values of food consumption by adult animals are 1.3–1.5 times higher than those of young ones. The absolute dry matter intake reaches the maximum at air humidity levels close to 50–55%. Studies on the age characteristics of the quantitative and qualitative aspects of nutrition and energy of the midday gerbil in captivity showed that the consumption of various types of food ranges from 4.2 to of 7.5 g of dry matter per individual per day, depending on the age of the animals and the quality of the food offered.
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