The limits to sustainable energy intake (SusEI) are very important to the mammals' survival during lactation. Previous studies suggested that the SusEI limitation of Eothenomys miletus
may be constrained by peripheral limitation hypothesis instead of heat dissipation limitation hypothesis. To distinguish the two ideas, E. miletus
were shaved at early lactation, followed by multiple examination of body mass, food intake, resting metabolic rate (RMR), litter size and mass, and milk energy output (MEO) among the shaved mothers and non-shaved controls. The results showed that shaving could significantly increase food intake and RMR, but had no significant effects on litter mass and MEO. These data supported the peripheral limitation hypothesis rather than the heat dissipation limitation hypothesis, indicating that SusEI was more likely peripherally caused by the capacity of mammary gland to produce milk. The inconsistent responses to sustainable limits suggested that the limitations on SusEI during peak lactation might be differed in all species.
2016,35(4): 564-568 收稿日期：2016-03-04
Bateman N. 1957. Some physiological aspects of lactation in mice[J]. Journal of Agricultural Science, 49(1):60-77.
Fiorotto ML, Burrin DG, Perez M, et al. 1991. Intake and use of milk nutrients by rat pups suckled in small, medium or large litters[J]. American Journal of Physiology, 260(6):1104-1113.
Hammond KA, Diamond J. 1992. An experimental test for a ceiling on sustained metabolic-rate in lactating mice[J]. Physiological Zoology, 65(5):952-977.
Hammond KA, Diamond J. 1994. Limits to dietary nutrient intake and intestinal nutrient uptake in lactating mice[J]. Physiological Zoology, 67(1):282-303.
Hammond KA, Lloyd KCK, Diamond J. 1996. Is mammary output capacity limiting to lactational performance in mice?[J]. Journal of Experimental Biology, 199(2):337-349.
Hammond KA, Diamond J. 1997. Maximum sustained energy budgets in humans and animals[J]. Nature, 386(6624):457-462.
Hammond KA, Kristan DM. 2000. Responses to lactation and cold exposure by deer mice (Peromyscus maniculatus)[J]. Physiological & Biochemical Zoology, 73(5):547-556.
Johnson MS, Speakman JR. 2001. Limits to sustained energy intake V. Effect of cold exposure during lactation in Mus musculus[J]. Journal of Experimental Biology, 204(11):1967-1977.
Johnson MS, Thomson SC, Speakman JR. 2001a. Limits to sustained energy intake Ⅰ. Lactation in the laboratory mouse Mus musculus[J]. Journal of Experimental Biology, 204(11):1925-1935.
Johnson MS, Thomson SC, Speakman JR. 2001b. Limits to sustained energy intake Ⅱ. Interrelationship between resting metabolic rate, life-history traits and morphology in Mus musculus[J]. Journal of Experimental Biology, 204(11):1937-1946.
Johnson MS, Thomson SC, Speakman JR. 2001c. Limits to sustained energy intake Ⅲ. Effects of concurrent pregnancy and lactation in Mus musculus[J]. Journal of Experimental Biology, 204(11):1947-1956.
Konig B, Riester J, Markl H. 1988. Maternal care in house mice (Mus musculus) Ⅱ. The energy cost of lactation as a function of litter size[J]. Journal of Zoology, 216(2):195-211.
Krol E, Speakman JR. 2003a. Limits to sustained energy intake Ⅵ. Energetics of lactation in laboratory mice at thermoneutrality[J]. Journal of Experimental Biology, 206(23):4255-4266.
Krol E, Speakman JR. 2003b. Limits to sustained energy intake Ⅶ. Milk energy output in laboratory mice at thermoneutrality[J]. Journal of Experimental Biology, 206(23):4267-4281.
Krol E, Murphy M, Speakman JR. 2007. Limits to sustained energy intake Ⅹ. Effects of fur removal on reproductive performance in laboratory mice[J]. Journal of Experimental Biology, 210(23):4233-4243.
Peterson CC, Nagy KA, Diamond J. 1990. Sustained metabolic scope[J]. Proceedings of the National Academy of Sciences of the United States of America, 87(6):2324-2328.
Rogowitz GL. 1998. Limits to milk flow and energy allocation during lactation in the hispod cotton rat (Sigmodon hispidus)[J]. Physiological Zoology, 71(3):312-320.
Speakman JR, McQueenie J. 1996. Limits to sustained metabolic rate:the link between food intake, basal metabolic rate and morphology in reproducing mice, Mus musculus[J]. Physiological Zoology, 69(4):746-769.
Speakman JR, Krol E. 2005. Limits to sustained energy intake Ⅸ:a review of hypotheses[J]. Journal of Comparative Physiology, 175(6):375-394.
Thompson SD, Nicol ME. 2002. Basal metabolic rate and energetics of reproduction in therian mammals[J]. Nature, 321(6071):690-693.
Zhang XY, Wang DH. 2007. Thermogenesis, food intake and serum leptin in cold exposed lactating Brandt's voles Lasiopodomys brandtii[J]. Journal of Experimental Biology, 210(3):512-521. Zhang XY, Li YL, Wang DH. 2008. Large litter size increases maternal energy intake but has no effect on UCP1 content and serum-leptin concentrations in lactating Brandt's voles (Lasiopodomys brandtii)[J]. Journal of Comparative Physiology, 178(178):637-645.
Zhao ZJ, Cao J. 2009. Effect of fur removal on the thermal conductance and energy budget in lactating Swiss mice[J]. Journal of Experimental Biology, 212(16):2541-2549.
Zhao ZJ, Chi QS, Cao J. 2010. Milk energy output during peak lactation in shaved Swiss mice[J]. Physiology & Behavior, 101(1):59-66.
Zhu WL, Jia T, Lian X, et al. 2008. Evaporative water loss and energy metabolic in two small mammals, voles (Eothenomys miletus) and mice (Apodemus chevrieri) in Hengduan Mountains region[J]. Journal of Thermal Biology, 33(6):324-331.
Zhu WL, Cai JH, Lian X, et al. 2010. Adaptive character of metabolism in Eothenomys miletus in Hengduan Mountains region during cold acclimation[J]. Journal of Thermal Biology, 35(8):417-421.
Zhu WL, Wang ZK. 2014. Resting metabolic rate and energetics of reproduction in lactating Eothenomys miletus from Hengduan Mountain region[J]. Zoological Studies, 53(1):41.
Zhu WL, Zhang H, Meng LH, et al. 2015. Variations in enzyme activity of brown adipose tissue and liver during postnatal development energy requirements during lactation in Eothenomys miletus (Mammalia:Rodentia:Cricetidae)[J]. Journal of Zoological and Bioscience Research, 2(2):9-16.