Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark.
J Anim Physiol Anim Nutr (Berl). 2022 Mar;106(2):335-344. doi: 10.1111/jpn.13572. Epub 2021 May 31.
Knowledge about energy requirements (ER) of dogs is important in order to provide dogs with an appropriate energy supply. In this study, the oral C-bicarbonate technique (o CBT) was used to estimate energy expenditure (EE) in 50 privately owned dogs of different body sizes (small: Danish-Swedish Farmdog (DSF, n = 16), medium: Beagle (n = 15), large: Labrador Retriever (n = 19)), of different ages (adult: 2-7 years (n = 33), senior: ≥8 years (n = 17)). The aim was to evaluate the feasibility of the method in the field and to get more information about ER of dogs. All dogs were measured twice, on two separate days under standardized, resting conditions. The dogs were fasted overnight prior to measurements, which were carried out in home environment. Only measurements of dogs resting calmly were included in the statistical analyses. No significant difference (p > 0.05) in EE was found between days of measurements. The EE measured in Labrador Retrievers (405 kJ (97 kcal)/kg BW /day) was significantly lower (p < 0.001) than of Beagles (530 kJ (127 kcal)/kg BW /day) and DSF (497 kJ (119 kcal)/kg BW /day), the difference between Beagles and DSF being non-significant. Senior dogs had significantly lower (p < 0.001) EE values than adult dogs with least square means (LSM) of 441 kJ (105 kcal)/kg BW /day and 513 kJ (123 kcal)/kg BW /day respectively. Analysed within breeds, EE of senior Labrador Retrievers (370 kJ (88 kcal)/kg BW /day)) was significantly lower (p < 0.01) than adults (439 kJ (105 kcal)/kg BW /day), as well as in DSF (453 kJ (108 kcal)/kg BW /day and 541 kJ (129 kcal)/kg BW /day for senior and adult dogs respectively). However, the EE was not significantly different (p > 0.05) between adult (548 kJ (131 kcal)/kg BW /day) and senior (499 kJ (119 kcal)/kg BW /day) Beagles. This study suggests that when measured under standardized resting conditions, the o CBT can provide reliable results of EE and be a helpful tool to get more knowledge about ER of dogs of different sizes, breeds and ages.
了解犬的能量需求（ER）对于为犬提供适当的能量供应非常重要。在这项研究中，使用口服 C-重碳酸盐技术（o CBT）来估计 50 只不同体型（小型：丹麦-瑞典农场犬（DSF，n=16），中型：比格犬（n=15），大型：拉布拉多猎犬（n=19））、不同年龄（成年：2-7 岁（n=33），老年：≥8 岁（n=17））的犬的能量消耗（EE）。目的是评估该方法在现场的可行性，并获得更多关于犬 ER 的信息。所有犬在标准化休息条件下进行了两次测量，两次测量在两个不同的日子进行。测量前犬禁食过夜，并在家庭环境中进行。只有在安静休息时测量的犬的数据才被纳入统计分析。测量日之间的 EE 无显著差异（p>0.05）。拉布拉多猎犬的 EE（405 kJ（97 kcal）/kg BW /天）明显低于比格犬（530 kJ（127 kcal）/kg BW /天）和 DSF（497 kJ（119 kcal）/kg BW /天），比格犬和 DSF 之间的差异无统计学意义。老年犬的 EE 值明显低于成年犬（LSMeans：441 kJ（105 kcal）/kg BW /天和 513 kJ（123 kcal）/kg BW /天），差异有统计学意义（p<0.001）。在同一品种内，老年拉布拉多猎犬（370 kJ（88 kcal）/kg BW /天）的 EE 明显低于成年犬（p<0.01），老年犬（370 kJ（88 kcal）/kg BW /天）的 EE 也明显低于成年犬（p<0.01），老年犬（370 kJ（88 kcal）/kg BW /天）的 EE 也明显低于成年犬（p<0.01），老年犬（370 kJ（88 kcal）/kg BW /天）的 EE 也明显低于成年犬（p<0.01）。老年 DSF（453 kJ（108 kcal）/kg BW /天和 541 kJ（129 kcal）/kg BW /天，老年犬和成年犬分别）的 EE 也显著低于成年犬（p<0.01）。然而，成年（548 kJ（131 kcal）/kg BW /天）和老年（499 kJ（119 kcal）/kg BW /天）比格犬的 EE 无显著差异（p>0.05）。本研究表明，在标准化休息条件下进行测量时，o CBT 可以提供可靠的 EE 结果，并有助于了解不同体型、品种和年龄犬的 ER。
