Effects of Dietary Pea and Compound Enzyme Preparation on Growth Performance, Nutrient Utilization Rate and Intestinal Development of Broilers

LIU Xue; WANG Xuan; TANG Defu; DU Baolong; NIAN Fang

doi:10.3969/j.issn.1006-267x.2020.09.054

2020 , Vol. 32 >Issue 9: 4429 - 4440

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.09.054

Effects of Dietary Pea and Compound Enzyme Preparation on Growth Performance, Nutrient Utilization Rate and Intestinal Development of Broilers

LIU Xue ,
WANG Xuan ,
TANG Defu ,
DU Baolong ,
NIAN Fang

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1. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
2. College of Science, Gansu Agricultural University, Lanzhou 730070, China

Received date: 2020-03-02

Online published: 2020-09-17

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Abstract

This experiment was conducted to investigate the effects of different levels of pea and compound enzyme preparation in diets on growth performance, nutrient utilization rate and intestinal development. The 5×2 factorial test design was adopted, factor A was pea supplemental level (A1:0, A2:10%, A3:20%, A4:30%, A5:40%), and factor B was compound enzyme preparation supplemental level (B1:0 U/kg amylase and 0 U/kg protease, B2:750 U/kg amylase and 60 U/kg protease). Nine hundred and sixty one-day-old Arbor Acres (AA) broilers with similar body weight were randomly divided into 10 groups with 8 repelicates per group and 12 broilers per replicate (males and females in half), and the 10 groups were groups A1B1, A1B2, A2B1, A2B2, A3B1, A3B2, A4B1, A4B2, A5B1 and A5B2, respectively. The experiment lasted for 42 days. The results showed as follows:1) pea supplemental level had no significant effect on average daily feed intake (ADFI) of broilers (P>0.05), but had significant effects on average daily gain (ADG) and the ratio of feed to gain (F/G) (P<0.05). Diets supplemented with 10% and 20% of pea had no significant effect on F/G (P>0.05), but diets supplemented with 30% and 40% pea significantly decreased ADG and significantly increased F/G (P<0.05). Compound enzyme preparation supplemental level and the interaction of pea and compound enzyme preparation supplemental level had no significant effect on growth performance of broilers (P>0.05). 2) Pea supplemental level had significant effects on the utilization rate of dry matter, crude protein, energy, calcium and phosphorus of broilers (P<0.05), and diets supplemented with 10% and 20% pea had no significant effects on the utilization rate of energy and phosphorus (P>0.05). Compound enzyme preparation supplemental level had no significant effect on nutrient utilization rate of broilers (P>0.05), and pea and compound enzyme preparation supplemental level had significant interaction on utilization rate of crude protein, calcium and phosphorus (P<0.05). 3) Dietary 40% pea significantly increased jejunum length of broilers (P<0.05). Diets supplemented with 750 U/kg amylase and 60 U/kg protease compound enzyme preparation significantly increased cecum weight (P<0.05), and had a tendency of increasing cecum mass index (0.05 ≤ P<0.10). Pea and compound enzyme preparation supplemental level had no significant interaction on intestinal development (P>0.05). In summary, diets supplemented with 10% and 20% pea have no adverse effects on growth performance and nutrient utilization rate of broilers, and promote jejunal and total intestinal development; and diets supplemented with 30% and 40% pea significantly reduce growth performance and nutrient utilization rate of broilers. So no more than 20% pea can added to broiler's diets to replaced corn and soybean meal.

Key words： pea; enzyme; broilers; growth performance; nutrient utilization rate; intestinal development

Cite this article

LIU Xue , WANG Xuan , TANG Defu , DU Baolong , NIAN Fang . Effects of Dietary Pea and Compound Enzyme Preparation on Growth Performance, Nutrient Utilization Rate and Intestinal Development of Broilers[J]. Chinese Journal of Animal Nutrition, 2020 , 32(9) : 4429 -4440 . DOI: 10.3969/j.issn.1006-267x.2020.09.054

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