Effects of Dietary Amylose/Amylopectin and Amylase on Growth Performance of Broilers and Their Interaction Effect

MA Jie, YANG Tai, YANG Mei, CHEN Qinghua, LIU Wei

doi:10.3969/j.issn.1006-267x.2019.07.019

Chinese Journal of Animal Nutrition >

2019 , Vol. 31 >Issue 7: 3086 - 3094

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.07.019

Molecular Nutrition

Effects of Dietary Amylose/Amylopectin and Amylase on Growth Performance of Broilers and Their Interaction Effect

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Shandong Longkete Enzyme Preparation Co., Ltd., Linyi 276400, China

Received date: 2019-01-11

Online published: 2019-07-19

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Abstract

The purpose of this experiment was to study the effects of amylose/amylopectin and amylase on growth performance and nutrient apparent digestibility of broilers. The experiment used a 4×3 two factor design, and a total of 960 Arbor Acres (AA) broilers at 1 day of age were randomly divided into 12 groups with 5 replicats in each group and 16 broilers in each replicat. The dietary amylose/amylopectin were 0.11, 0.23, 0.35 and 0.47, and the addition amounts of amylase were 0, 3 000 and 6 000 U/kg, respectively. The test period was 21 d, and the growth performance and nutrient apparent digestibility of broilers were determined. The results showed as follows:1) the average daily gain of broilers in the group with amylose/amylopectin of 0.23 significantly increased (P<0.05), and the feed/gain was the highest in the group with amylose/amylopectin of 0.47 (P<0.05),the other groups were not significantly different (P>0.05); the addition of 6 000 U/kg amylase in the diets significantly reduced the average daily gain of broilers (P<0.05), but the effect on the feed/gain was not significant (P>0.05); the interaction effect was not significant (P>0.05). 2) The apparent digestibility of energy, crude protein, dry matter, crude fat and calcium were the highest in the group with amylose/amylopectin of 0.11 (P<0.05), and the lowest in the group with amylose/amylopectin of 0.47 (P<0.05); the addition of amylase in diets had no significant effect on nutrient apparent digestibility (P>0.05); the interaction effect had significant effect on nutrient apparent digestibility (P<0.05). In conclusion, feeding diets with amylose/amylopectin of 0.23 and amylase addition of 3 000 U/kg can improve the growth performance of broilers.

Key words： amylose/amylopectin; amylase; broiler; growth performance; interaction effect

Cite this article

MA Jie, YANG Tai, YANG Mei, CHEN Qinghua, LIU Wei . Effects of Dietary Amylose/Amylopectin and Amylase on Growth Performance of Broilers and Their Interaction Effect[J]. Chinese Journal of Animal Nutrition, 2019 , 31(7) : 3086 -3094 . DOI: 10.3969/j.issn.1006-267x.2019.07.019

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