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Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities

A study was conducted to determine the effect of supplementing exogenous protease to broiler chickens fed low protein and low energy diets on growth performance, incidence of pododermatitis and antibody production against Newcastle disease vaccination under two stocking densities. A total of 1650 bi...

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Main Author: Mohd Taib, Shafeezah
Format: Project Paper Report
Language:English
Published: 2015
Online Access:http://psasir.upm.edu.my/id/eprint/90108/1/FP%202015%20212%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/90108/
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spelling my.upm.eprints.901082021-08-12T10:08:18Z http://psasir.upm.edu.my/id/eprint/90108/ Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities Mohd Taib, Shafeezah A study was conducted to determine the effect of supplementing exogenous protease to broiler chickens fed low protein and low energy diets on growth performance, incidence of pododermatitis and antibody production against Newcastle disease vaccination under two stocking densities. A total of 1650 birds were randomly assigned to 60 floor pens with wood shavings as litter material in a closed house into normal (10 birds/m²) and high stocking densities (15 birds/m²). Commencing from day 1-21, bird from each density were given two types of starter diets, normal protein-normal energy (NPNE) and low protein-low energy (LPLE). From day 21-42, birds from each starter diet were given the following three types finisher diets: (i) normal protein-normal energy for both starter and finisher (NPNE-NPNE), (ii) normal protein-normal energy starter and low protein-normal energy finisher (NPNE-LPNE), (iii) normal protein-normal energy starter and low protein-normal energy plus protease finisher (NPNE-LPNEP), (iv) low protein-low energy starter and normal protein-normal energy finisher (LPLE-NPNE), (v) low protein-low energy starter and low protein-normal energy finisher (LPLE-LPNE), and (vi) low protein-low energy starter and low protein-normal energy plus protease finisher (LPLE-LPNEP). Body weight and feed intake, were recorded weekly. Feed conversion ratios were calculated. Daily mortality were recorded. On day 42, 75 birds per diet per density were scored for incidence of pododermatitis. On a similar day, blood samples were collected from 20 birds per diet per density for Newcastle disease antibody titer which was determined by ELISA. There was no significant diet x density interaction for all the parameters. Birds fed LPLE starter diet had significantly lower body weight on day 21 and feed intake during day 1-21 than NPNE. Body weight on day 42, total feed intake (day 1-42) and final FCR (day 1-42) were not significantly affected by diet. Diet had no significant effect on FCR (day1-21) and incidence of pododermatitis (day 42). Birds fed LPLE diets during the starter period had significantly lower Newcastle disease antibody titer than NPNE. High stocking density resulted in significantly lower body weight on day 42, poorer final FCR (day 1-42), higher incidence of pododermatitis, and lower Newcastle disease antibody titer than those stocked at lower density. Neither diet nor stocking density had significant effect on mortality rate. In conclusion, a lower protein and energy diets can be used without any adverse effects on growth performance of broilers chickens. However, LPLE diets may reduce ND antibody production. High stocking density was detrimental to growth performance, incidence of pododermatitis and ND antibody production. 2015 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/90108/1/FP%202015%20212%20-%20IR.pdf Mohd Taib, Shafeezah (2015) Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities. [Project Paper Report]
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A study was conducted to determine the effect of supplementing exogenous protease to broiler chickens fed low protein and low energy diets on growth performance, incidence of pododermatitis and antibody production against Newcastle disease vaccination under two stocking densities. A total of 1650 birds were randomly assigned to 60 floor pens with wood shavings as litter material in a closed house into normal (10 birds/m²) and high stocking densities (15 birds/m²). Commencing from day 1-21, bird from each density were given two types of starter diets, normal protein-normal energy (NPNE) and low protein-low energy (LPLE). From day 21-42, birds from each starter diet were given the following three types finisher diets: (i) normal protein-normal energy for both starter and finisher (NPNE-NPNE), (ii) normal protein-normal energy starter and low protein-normal energy finisher (NPNE-LPNE), (iii) normal protein-normal energy starter and low protein-normal energy plus protease finisher (NPNE-LPNEP), (iv) low protein-low energy starter and normal protein-normal energy finisher (LPLE-NPNE), (v) low protein-low energy starter and low protein-normal energy finisher (LPLE-LPNE), and (vi) low protein-low energy starter and low protein-normal energy plus protease finisher (LPLE-LPNEP). Body weight and feed intake, were recorded weekly. Feed conversion ratios were calculated. Daily mortality were recorded. On day 42, 75 birds per diet per density were scored for incidence of pododermatitis. On a similar day, blood samples were collected from 20 birds per diet per density for Newcastle disease antibody titer which was determined by ELISA. There was no significant diet x density interaction for all the parameters. Birds fed LPLE starter diet had significantly lower body weight on day 21 and feed intake during day 1-21 than NPNE. Body weight on day 42, total feed intake (day 1-42) and final FCR (day 1-42) were not significantly affected by diet. Diet had no significant effect on FCR (day1-21) and incidence of pododermatitis (day 42). Birds fed LPLE diets during the starter period had significantly lower Newcastle disease antibody titer than NPNE. High stocking density resulted in significantly lower body weight on day 42, poorer final FCR (day 1-42), higher incidence of pododermatitis, and lower Newcastle disease antibody titer than those stocked at lower density. Neither diet nor stocking density had significant effect on mortality rate. In conclusion, a lower protein and energy diets can be used without any adverse effects on growth performance of broilers chickens. However, LPLE diets may reduce ND antibody production. High stocking density was detrimental to growth performance, incidence of pododermatitis and ND antibody production.
format Project Paper Report
author Mohd Taib, Shafeezah
spellingShingle Mohd Taib, Shafeezah
Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
author_facet Mohd Taib, Shafeezah
author_sort Mohd Taib, Shafeezah
title Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
title_short Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
title_full Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
title_fullStr Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
title_full_unstemmed Effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
title_sort effects of feeding low protein and low energy diet with protease supplementation on the performance of broiler chickens under two stocking densities
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/90108/1/FP%202015%20212%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/90108/
_version_ 1709669047706058752
score 13.211869

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