Feed Science and Technology

Evaluation and Prediction Model of Digestible Energy of Degossypolized Cottonseed Protein for Growing Pigs

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  • Institute of Animal Nutrition, Engineering Research Center for Feed Safety and Efficient Utilization of Education, Hunan Agricultural University, Changsha 410128, China

Received date: 2014-02-25

  Online published: 2014-08-13

Abstract

The digestible energy (DE) and analyzed proximate composition and the prediction model of DE of degossypolized cottonseed protein (DCP) by its analyzed proximate composition for growing pigs were investigated in this experiment, and DCP were collected in main producing areas of China. A total of 12 Duroc×Landrance×Largewhite castrate male pigs with (32.0±2.3) kg initial body weight were allotted to two 6×6 Latin square designs. The diets included 1 kind of basic diet and 11 kinds of trial diets which were replaced 18% of the basic diet by DCP. The DE of 11 kinds of DCP was determined with total feces collection method and difference method. The regression equation was established on the basis of the correlation between DE and proximate composition of DCP. The results showed that the mean of DE (air-dry basis) of DCP for pigs was (11.67±0.82) MJ/kg, and there were no significant differences in DE of DCP from different areas. The recommended prediction models (DM basis) of DCP for pigs were DE=15.40-0.27ADF (R2=0.91, RSD=0.27) and DE=14.88-0.29ADF+0.25EE (R2=0.94, RSD=0.22). The appropriate predicting factor was ADF.

Cite this article

SHEN Jun, CHEN Datu, HU Guanbo, LI Xia, LIU Geng, HE Xi, ZHANG Shirui . Evaluation and Prediction Model of Digestible Energy of Degossypolized Cottonseed Protein for Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2014 , 26(8) : 2262 -2269 . DOI: 10.3969/j.issn.1006-267x.2014.08.030

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