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. 2019 Feb 14;32(10):1573-1579.
doi: 10.5713/ajas.18.0713. Print 2019 Oct.

Determination of the energy contents and nutrient digestibility of corn, waxy corn and steam-flaked corn fed to growing pigs

Dongli Ma  1 , Juntao Li  1 , Chengfei Huang  1 , Fengjuan Yang  1 , Yi Wu  1 , Ling Liu  1 , Wei Jiang  2 , Zhicheng Jia  3 , Peijun Zhang  3 , Xuezhen Liu  3 , Shuai Zhang  1
Affiliations

Determination of the energy contents and nutrient digestibility of corn, waxy corn and steam-flaked corn fed to growing pigs

Dongli Ma et al. Asian-Australas J Anim Sci. .

Abstract

Objective: The research was conducted to determine the DE and ME contents as well as the apparent total tract digestibility (ATTD) of nutrients in corn, waxy corn and steam-flaked corn fed to growing pigs.

Methods: Eighteen growing pigs with initial body weight of 15.42 ± 1.41 kg were randomly allotted to three diets including a corn diet, a waxy corn diet and a steam-flaked corn diet in a completely randomized design. Each treatment contained six replicates. The experiment lasted for 12 days, which comprised 7-d adaptation to diets followed by a 5-d total collection of feces and urine. The energy contents and the nutrient digestibility in three ingredients were calculated using direct method.

Results: Compared to normal corn, both the amylose and dietary fiber contents in waxy corn were numerically lower, but the starch gelatinization degree was numerically greater. Moreover, the DE and ME contents as well as the ATTD of NDF and ADF in waxy corn were significantly greater (p < 0.05) than those in normal corn when fed to growing pigs. Furthermore, the steam-flaked corn had greater (p < 0.05) DE and ME contents, and ATTD of ether extract (EE) and ADF compared to normal corn.

Conclusion: Both variety and processing procedure have influence on chemical compositions, energy contents and nutrient digestibility of corn. The waxy corn and steam-flaked corn had greater starch gelatinization degree and DE and ME contents compared to normal corn when fed to growing pigs.

Keywords: Available Energy; Growing pig; Nutrient Digestibility; Steam-flaked Corn; Waxy Corn.

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Conflict of interest statement

CONFLICT OF INTEREST

We certify that there is no conflict of interest with any financial organization regarding the material discussed in the manuscript. Jia Z, Zhang P, Liu X are employees of Baotou Beichen Feed Sci-tech Co., Ltd.

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