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首页> 外文期刊>Journal of Animal Physiology and Animal Nutrition >Endogenous fat losses and true and apparent fat digestibility in adult and growing dogs fed diets containing poultry offal fat
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Endogenous fat losses and true and apparent fat digestibility in adult and growing dogs fed diets containing poultry offal fat

机译：内源性脂肪损失和成人和生长狗的真实和明显的脂肪消化率喂养含有家禽内脏脂肪的饮食

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摘要

The objective of this study was to evaluate the coefficient of total tract apparent digestibility (CTTAD) of dietary nutrients, endogenous fat loss (EFL), dietary metabolizable energy (ME) content, coefficient of true digestibility (CTD) of fat and faecal parameters of dogs. A total of 16 puppies and 8 adult dogs were distributed according to a double Latin square experimental design. A basal diet was formulated, to which increasing levels (60, 120 and 180 g/kg) of poultry offal fat oil were added. EFL was estimated using hyperbolic and linear regression as a function of LW/day and dry matter (DM) intake, respectively, and the CTD of fat was calculated. The CTTAD of acid-hydrolysis ether extract (AHEE) and ME content increased as dietary poultry offal fat level increased both in adult dogs and in puppies (p < .05). The CTTAD of DM and crude protein were higher in adult dogs than in puppies. EFL was estimated by hyperbolic regression as y = 98.1094 - 13.6202/x and y = 99.1280 - 26.1366/x, where y = CTTAD of AHEE (%) and x = AHEE intake/kg BW, for adult dogs and puppies, respectively, which yielded EFL values of 138 and 262 mg AHEE per kg BW per day for adult dogs and puppies respectively. The EFL estimated by linear regression was 7.89 g and 8.97 g/kg DM intake for adult dogs and puppies respectively. The CTD estimated by both methodologies was higher in puppies than in adults (p < .05). Lower faecal DM and score, and higher ammonia production were obtained in puppies than adult dogs (p < .05). The results indicate good fat utilization and that fat digestibility is underestimated, as the CTTAD of AHEE does not take into account EFL, particularly at low-fat inclusion levels and in growing dogs, which have greater EFL than adult dogs.
机译：本研究的目的是评估膳食营养成分，内源性脂肪损失（EFL），饮食代谢能量（ME）含量，脂肪和粪便参数的真正消化系数（CTD）的总介质表观消化率（CTTAD）系数小狗。根据双拉丁方形实验设计，共有16只小狗和8只成年犬分发。配制了基础饮食，加入增加水平（60,120和180g / kg）的家禽内脏脂肪油。用双曲线和线性回归估计EFL，作为LW / Day和干物质（DM）摄入的函数，并计算脂肪的CTD。随着成年犬和小狗的饮食禽类内脂肪水平增加，酸性水解醚提取物（AHEE）和ME含量增加了CTTAD（P <.05）。成年犬的DM和粗蛋白的CTTAD比小狗更高。 EFL被双曲性回归估计为y = 98.1094-13.6202 / x和y = 99.1280-26.1366 / x，其中Y = Cttad分别用于成人狗和幼犬的Ahee（％）和X = Ahee Intake / Kg BW，为成年犬和小狗分别产生每天每千克BW的138和262mg Ahee的EFL值。通过线性回归估计的EFL分别为成人狗和小狗的7.89克和8.97克/千克DM摄入量。两种方法估计的CTD在幼崽中比成人更高（P <.05）。降低粪便DM和得分，比成年犬在幼犬中获得更高的氨生产（P <.05）。结果表明良好的脂肪利用率和脂肪消化率低估，因为Ahee的CTTAD不考虑EFL，特别是在低脂肪包合物水平和生长犬，其比成年犬更大的EFL。

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