Bioenergetics of pregnancy and lactation in the bank vole

作者：Franciszek Kaczmarski · 发表于：ACTA THERIOLOGICA · 年份：1966 · DOI：10.4098/at.arch.66-19 · 被引用次数：184 · 研究领域：Bat Biology and Ecology Studies、Adipose Tissue and Metabolism、Birth, Development, and Health

Bioenergetics oí Pregnancy and Lactation in the Bank Vole 1 ) [With 1 Table & 1 Fig.]The food consumption and assimilation were determined in the females of bank vole, Clethrionomys glareolus (S c h r e b e r, 1780) during the whole period of pregnancy and lactation (18 + 18 days).The daily food assimilation (digestion) of non-reproducing females (body weight 25 g) isl 7.5 Kcal/animal.Toward the end of gestation it reaches 23.7 Kcal/day/animal and during the maximal lactation it averages 38.9 Kcal/day for the females of the same body weight.The energy requirement of females increases by 24% during the pregnancy and 92% during the lactation.To produce a litter of 5 young and raise 4 of them to weaning a female has to assimilate additionally 364 Kcal; 75 for the pregnancy and 289 Kcal for the lactation.The increase in food intake during this period corresponds to 406 Kcal.The digestibility coefficient is high in both non-reproducing and pregnant or lactating females (88.5%).The ecological efficiency is also very high; 11.8% during the pregnancy and 14.6% during the lactation.In the models of rodent bioenergetics the correction for gestation and lactation has to be considered.These corrections are computed for whole breeding season in relation to the number of mature females in the population.