Development of equations for predicting metabolisable energy concentrations in compound feeds for pigs
- 27 October 2009
- journal article
- research article
- Published by Taylor & Francis Ltd in Archives of Animal Nutrition
- Vol. 63 (6), 442-454
- https://doi.org/10.1080/17450390903217317
Abstract
In 2006 in Germany new recommendations for the supply of energy and nutrients to pigs were published, including a modification of the energy evaluation on the basis of metabolisable energy for pigs (MES). It was the objective of this meta-analysis to calculate equations that can be used for predicting MES in compound feeds for pigs on the basis of their nutrient concentrations. Data from digestibility studies with a total of 290 compound feeds were provided by different research institutions. Feeds for both piglets and growing-finishing pigs were contained in the data set. The MES concentration ranged from 10.4–16.6 MJ/kg DM, with the majority of data ranging between 15 and 16 MJ/kg DM. The data were processed with a cross validation method and a multiple regression approach by using MES as the independent variable. A corrected Akaike-Information-Criterion (AIC_ cor) was used for model evaluation. Various models were developed and validated independently. Calculations were made both for piglet and growing-finishing pig feeds, separately and together, for all feeds. It was shown that the MES concentration in compound feeds can be predicted with good accuracy if the concentrations of crude protein, crude fat, crude fibre, and starch are known. Prediction equations were presented. The lack of data for highly fibrous feeds as well as the analysis of different fibre fractions was identified as a challenge for further improvement of the prediction equations.Keywords
This publication has 11 references indexed in Scilit:
- Influence of dietary fibre on digestive utilization and rate of passage in growing pigs, finishing pigs and adult sowsAnimal Science, 2002
- Prediction of digestibility of nutrients and energy values of pig diets from chemical analysis1Journal of Animal Science, 1993
- Regression and time series model selection in small samplesBiometrika, 1989
- The prediction of the energy value of compounded pig foods from chemical analysisAnimal Feed Science and Technology, 1987
- Interaction between Energy Level in the Diet and Environmental Temperature on the Utilization of Energy in Growing Pigs1Journal of Animal Science, 1985
- Prediction of metabolizable energy for pigs on the basis of crude nutrients in the feedsLivestock Production Science, 1984
- Schätzgleichungen zur Ermittlung des energetischen Futterwertes von Mischfuttermitteln für SchweineZeitschrift für Tierphysiologie Tierernährung und Futtermittelkunde, 1983
- The net energy value of balanced diets for growing pigsLivestock Production Science, 1982
- Zur Schätzung energetischer Futterwerte von Mischfutter‐mitteln für SchweineZeitschrift für Tierphysiologie Tierernährung und Futtermittelkunde, 1981
- Von der Kalorie zum Joule: Neue Größenbeziehungen bei Messungen des Energieumsatzes und bei der Berechnung von Kennzahlen der energetischen FutterbewertungArchives of Animal Nutrition, 1980