Methodology effects on determining the energy concentration and the apparent total tract digestibility of components in diets fed to growing pigs

Chengfei Huang, Ping Li, Xiaokang Ma, Neil William Jaworski, Hans Henrik Stein, Changhua Lai, Jinbiao Zhao, Shuai Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: An experiment was conducted to investigate the effects of different diet formulations: F1 (Two complicated basal diets containing different crude protein levels plus tested feedstuff) vs F2 (A simple corn soybean meal [SBM] basal diet plus tested feedstuff) combined with total collection (TC) or chromic oxide (Cr2O3) marker or acid-insoluble ash (AIA) marker method, and freeze-dry or oven-dry (OD) technique on estimation of nutrient digestibility in diets fed to growing pigs. Methods: In F1, twelve barrows were allocated to two 6×4 Youden Squares. The treatment diets included a high protein basal (HPB) diet, a low protein basal (LPB) diet, a corn diet and a wheat bran (WB) diet formulated based on the HPB diet, and a SBM diet and a rapeseed meal (RSM) diet formulated based on the LPB diet. In F2, eight barrows were allocated to two 4×4 Latin Squares. The treatment diets included a corn basal diet, a SBM basal diet formulated based on the corn diet, and a WB diet and a RSM diet formulated based on the SBM diet. Results: Concentration of digestible (DE) and metabolizable energy (ME), and the apparent total tract digestibility of gross energy, ash, neutral detergent fibre, and acid detergent fibre determined by Cr2O3 marker method were greater than those determined by TC and AIA marker methods in HPB, LPB, and RSM diets formulated by F1 and in corn diet formulated by F2 (p<0.05). The DE values in WB and both DE and ME values in SBM and RSM estimated using F1 were greater than those estimated using F2 (p<0.05). Conclusion: From the accuracy aspect, the AIA marker or TC method combined with OD technique is recommended for determining the energy concentration and nutrient digestibility of components in diets fed to growing pigs.

Original languageEnglish (US)
Pages (from-to)1315-1324
Number of pages10
JournalAsian-Australasian Journal of Animal Sciences
Volume31
Issue number8
DOIs
StatePublished - Aug 2018

Keywords

  • Barrows
  • Digestibility
  • Drying Methods
  • Index Marker
  • Total Collection

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • General Engineering

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