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https://hdl.handle.net/1959.11/8958
Title: | Estimating total body water content in suckling and lactating llamas ('Lama glama') by isotope dilution | Contributor(s): | Riek, Alexander (author); Gerken, Martina (author) | Publication Date: | 2010 | DOI: | 10.1007/s11250-010-9547-9 | Handle Link: | https://hdl.handle.net/1959.11/8958 | Abstract: | Total body water (TBW) in 17 suckling and six lactating llamas was estimated from isotope dilution at three different post natum and lactation stages using both 18O and deuterium oxide (D2O). In total, 69 TBW measurements were undertaken. While TBW in lactating dams, expressed in kilogram, remained stable during the three measurement periods (91.8 ± 15.0 kg), the body water fraction (TBW expressed in percent of body mass) increased slightly (P = 0.042) from 62.9% to 65.8%. In contrast, TBW (kilogram) in suckling llamas increased significantly (P < 0.001) with age and decreased slightly when expressed as a percentage of body mass (P = 0.016). Relating TBW to body mass across all animals yielded a highly significant regression equation (TBW in kilogram = 2.633 + 0.623 body mass in kilogram, P < 0.001, n = 69) explaining 99.5% of the variation. The water fraction instead decreased in a curve linear fashion with increasing body mass (TBW in percent of body mass = 88.23 body mass in kilogram−0.064, P < 0.001, R² = 0.460). The present results on TBW can serve as reference values for suckling and lactating llamas, e.g., for the evaluation of fluid losses during disease. Additionally, the established regression equations can be used to predict TBW from body mass, providing that the body masses fall inside the range of masses used to derive the equations. | Publication Type: | Journal Article | Source of Publication: | Tropical Animal Health and Production, 42(6), p. 1189-1193 | Publisher: | Springer Netherlands | Place of Publication: | Netherlands | ISSN: | 1573-7438 0049-4747 |
Fields of Research (FoR) 2008: | 060806 Animal Physiological Ecology 060809 Vertebrate Biology |
Socio-Economic Objective (SEO) 2008: | 960804 Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversity | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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