Effects of Storage Time on Available Energy Value and Nutrient Digestibility of Corn in Pigs

  • ZHAO Jinbiao ,
  • ZHANG Gang ,
  • LI Zhongchao ,
  • SONG Xiaoming ,
  • LIU Ling
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  • State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2020-10-30

  Online published: 2021-05-14

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Abstract

The objective of this study was to explore the effects of storage time on digestible energy (DE), metabolizable energy (ME) and nutrient digestibility of corn in pigs. Samples of yellow dent corn stored at 1, 2, 3, 4 and 5 years were used. In Exp.1, a total of 30 Duroc×Landrace×Yorkshire (DLY) boars were allocated to determine the DE, ME and nutrient apparent total tract digestibility of 5 corn samples using a direct method. In Exp.2, a total of 30 DLY boars fitted with a T-cannula were allocated in a 6×6 Latin square design to determine the apparent standardized ileal digestibility (AID) and standardized ileal digestibility (SID) of crude protein and amino acids of 5 corn samples using a direct method. The results showed that the contents of dry matter and starch in the corn linear reduced as storage time increasing (P<0.05). Expect for arginine, storage time did not influence the contents of crude protein and amino acids in the corn (P>0.05). The DE and ME, and the apparent total tract digestibility of gross energy, starch, neutral detergent fiber and acid detergent fiber in the corn linear reduced as storage time increasing (P<0.05). Furthermore, the AID and SID of crude protein and amino acids in the corn linear reduced as storage time increasing (P<0.05). In summary, the DE, ME and the digestibility of fibers and amino acids of corn decrease linearly as storage time increasing, resulting in a reduced feeding value of corn.

Cite this article

ZHAO Jinbiao , ZHANG Gang , LI Zhongchao , SONG Xiaoming , LIU Ling . Effects of Storage Time on Available Energy Value and Nutrient Digestibility of Corn in Pigs[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2605 -2615 . DOI: 10.3969/j.issn.1006-267x.2021.05.021

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