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Effects of Protamex Added in Different Composition Types of Diets on the Ileal Apparent Digestibility of Amino Acids of Lu-yan White Pigs

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  • College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2014-09-29

  Online published: 2015-03-18

Abstract

This experiment was conducted to investigate the effects of protamex added in different composition types of diets on the ileal apparent digestibility of amino acids of Lu-yan white pigs. Seven castrated, healthy growing Lu-yan white pigs on average body weight of (35.0±0.5) kg were be used in this experiment. A 2 × 3 factor test designed in metabolic testing, one factor was enzyme added (enzyme added group and control group), the other factor was dietary composition type (corn-soybean meal type, corn-miscellaneous type and wheat-miscellaneous type). The control group did not add protease, while the enzyme added group added 0.1% protease. There was 6 periods in this experiment, and 7 d per period. The results showed that, there was a significantly increased in the ileal apparent digestibility of the methionine, valine, leucine, isoleucine, phenylalanine and proline of Lu-yan white pigs fed with the three composition types of diets added the protamex (P<0.05). Fed with diet of corn-miscellaneous type, the ileal apparent digestibility of amino acids in enzyme added group were significantly higher than the control group except threonine (P<0.05 or P<0.01), in which the ileal apparent digestibility of the serine, glutamic acid and cystine were significantly higher than those in pigs fed with the other two composition types of diets (P<0.05). In conclusion, the dietary added protamex can improve the ileal apparent digestibility of Lu-yan white pigs, and the effect of diet of corn-miscellaneous type is better.

Cite this article

JIANG Jianyang, SUN Pengpeng, YU Guanghui, YIN Huimeng, SONG Chunyang . Effects of Protamex Added in Different Composition Types of Diets on the Ileal Apparent Digestibility of Amino Acids of Lu-yan White Pigs[J]. Chinese Journal of Animal Nutrition, 2015 , 27(3) : 863 -869 . DOI: 10.3969/j.issn.1006-267x.2015.03.025

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