RUMINANT AND HERBIVORE NUTRITION AND FEED

Comparative Study of Determination of Dietary Nutrient Digestibility by Endogenous Indicator Method and Total Feces Collection Method for Dezhou Donkey

  • ZHANG Chen ,
  • YANG Quan ,
  • LI Jing ,
  • WANG Yunpeng ,
  • LI Wenxiu ,
  • ZHANG Guiguo ,
  • ZHANG Chongyu
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  • Key Laboratory of Animal Biotechnology and Disease Control & Prevention of Shandong Province, College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China

Received date: 2020-12-10

  Online published: 2021-06-10

Abstract

This experiment was conducted to determine the recovery rates of different endogenous indicators, to select the best endogenous indicator, and the nutrient digestibility for the diets of Dezhou donkeys was determined compared with the total fecal collection method. Twelve Dezhou donkeys which body weight was (128.5±5.0) kg were selected and randomly divided into 3 treatments with 4 replicates in each treatment. Single forage alfalfa and two kinds of total mixed ration (TMR) were used in the experiment, three kinds of endogenous indicators of acid insoluble lignin (ADL), lignin-containing insoluble ash in concentrated sulfuric acid (ADL+SAIA), hydrochloric acid insoluble ash (AIA) and total feces collection method were used in digestive trial, to determine the recovery rate in diets by polyester screen bag method. The adaptation period was 10 days and the experimental period was 6 days. The results showed as follows:1) the average recovery rate of ADL in the three diets were 98.28%, which could be used as an ideal endogenous indicator, while the average recovery rate of AIA was relatively higher. 2) There was no significant difference in nutrient digestibility of three diets between ADL endogenous indicator method and the total collection method (P>0.05). In conclusion, ADL can be used as an ideal endogenous indicator to determine the nutrient digestibility in the diet of Dezhou donkeys.

Cite this article

ZHANG Chen , YANG Quan , LI Jing , WANG Yunpeng , LI Wenxiu , ZHANG Guiguo , ZHANG Chongyu . Comparative Study of Determination of Dietary Nutrient Digestibility by Endogenous Indicator Method and Total Feces Collection Method for Dezhou Donkey[J]. Chinese Journal of Animal Nutrition, 2021 , 33(6) : 3439 -3446 . DOI: 10.3969/j.issn.1006-267x.2021.06.045

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