Accuracy of predicting metabolizable energy from in vitro digestible energy determined with a computer-controlled simulated digestion system in feed ingredients for ducks

Autor: Yuming Wang, Liting Yin, Hu Zhang, Ke Li, Dailin Li, Feng Zhao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Animal Nutrition, Vol 8, Iss , Pp 52-60 (2022)
Druh dokumentu: article
ISSN: 2405-6545
DOI: 10.1016/j.aninu.2021.04.002
Popis: Two experiments were conducted to study the accuracy of predicting true metabolizable energy (TME) of ingredients for ducks from in vitro digestible energy (IVDE) determined with a computer-controlled simulated digestion system. Experiment 1 was to establish TME prediction models from the IVDE of 9 energy feed ingredients and 12 protein feed ingredients using regression analysis. Experiment 2 was to validate the accuracy of the predicted ME of 10 ingredients randomly selected from Exp. 1. Ten diets were formulated with 2 to 6 of 10 ingredients. Dietary in vivo TME values were compared with calculated values based on the TME predicted in Exp. 1. In Exp. 1, the correlation coefficients between TME and IVDE were 0.9339 (P
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