The impact of multi-enzyme fortification on growth performance, intestinal morphology, nutrient digestibility, and meat quality of broiler chickens fed a standard or low-density diet

Youssef A Attia; Hanan S Al-Khalaifah; Abdulmohsen H Alqhtani; Hatem S Abd El-Hamid; Salem R Alyileili; Abd El-Hamid E Abd El-Hamid; Fulvia Bovera; Ali A El-Shafey

doi:10.3389/fvets.2022.1012462

The impact of multi-enzyme fortification on growth performance, intestinal morphology, nutrient digestibility, and meat quality of broiler chickens fed a standard or low-density diet

Front Vet Sci. 2022 Nov 24:9:1012462. doi: 10.3389/fvets.2022.1012462. eCollection 2022.

Authors

Youssef A Attia¹, Hanan S Al-Khalaifah², Abdulmohsen H Alqhtani³, Hatem S Abd El-Hamid⁴, Salem R Alyileili⁵, Abd El-Hamid E Abd El-Hamid¹, Fulvia Bovera⁶, Ali A El-Shafey¹

Affiliations

¹ Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Damanhour, Egypt.
² Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Shuwaikh, Kuwait.
³ Department of Animal Production, Faculty of Agriculture and Food Sciences, King Saud University, Riyadh, Saudi Arabia.
⁴ Department of Poultry and Fish Disease, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt.
⁵ Department of Integrative Agriculture, College of Food and Agriculture, United Arab Emirates University, Al-Ain, United Arab Emirates.
⁶ Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, Naples, Italy.

Abstract

This research aimed to study the impact of supplementation of three multi-enzyme levels (0, 0.1, and 0.2% of feed) and two levels of dietary treatments [standard diet (SD) and low-density diet (LDD)] on growth performance, carcass traits, digestibility, and meat quality of broilers from 1 to 38 days of age. A total of 216 1-day-old Arbor Acres broiler chicks were randomly assigned to a factorial experiment (2 × 3) comprising six dietary treatments, each with six replicates and each replicate with six chickens. The results showed that the LDD significantly reduced body weight gain by 5.0%, compared with the SD. Multi-enzymes significantly improved body weight gain and the production index (PI) relative to the SD. The feed conversion ratio was significantly enhanced with increased multi-enzymes from 1 to 21 days. A significant relation between the multi-enzyme concentration and type of dietary treatment was observed in body weight gain and feed conversion ratio from 1 to 21 days of age. Nitrogen-free extract digestibility was significantly increased by using the SD diet compared with using the LDD. Multi-enzyme supplementation improved the digestibility of dry matter, crude protein, crude fiber, and nitrogen-free extract in the LDD. A significant relationship was found between the multi-enzyme concentration and type of dietary treatment on the pancreas, liver, and intestinal length percentages. The meat dry matter concentration was significantly higher in the LDD group than in the SD group. The low-density diet significantly reduced the total revenue compared with the SD, whereas broilers fed the SD recorded significantly higher total revenue and economic efficiency than those fed the LDD. The low-density diet significantly increased economic efficiency compared with the SD. Multi-enzymes significantly increased the total revenue, net revenue, and economic efficiency than the standard set. In conclusion, using multi-enzymes in broiler diets improved body weight gain. The LDD with multi-enzymes showed enhanced body weight gain compared with the SD without multi-enzymes.

Keywords: broiler; carcass trait; growth performance; multi-enzyme; nutrient density.