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Changes in ghrelin mRNA level, plasma growth hormone and growth performance in dietary energy and protein levels of the diet in broiler chickens

We studied the effects of different energy and protein contents of the diet on performance, growth hormone concentration and ghrelin gene expression in broiler chicken. Two experiments were conducted to determine whether different dietary energy and protein levels alter growth hormone concentration... Full description

Journal Title: Italian Journal of Animal Science 01 September 2010, Vol.9(3), pp.e56-e56
Main Author: Karim Nobari
Other Authors: Shokoufe Ghazanfari , Mojtaba Tahmoorespur
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Directory of Open Access Journals (DOAJ)
ID: ISSN: 1594-4077 ; E-ISSN: 1828-051X ; DOI: 10.4081/ijas.2010.e56
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title: Changes in ghrelin mRNA level, plasma growth hormone and growth performance in dietary energy and protein levels of the diet in broiler chickens
format: Article
creator:
  • Karim Nobari
  • Shokoufe Ghazanfari
  • Mojtaba Tahmoorespur
subjects:
  • Energy
  • Protein
  • Plasma Growth Hormone
  • Ghrelin Gene Expression
  • Broiler
  • Agriculture
ispartof: Italian Journal of Animal Science, 01 September 2010, Vol.9(3), pp.e56-e56
description: We studied the effects of different energy and protein contents of the diet on performance, growth hormone concentration and ghrelin gene expression in broiler chicken. Two experiments were conducted to determine whether different dietary energy and protein levels alter growth hormone concentration and ghrelin mRNA abundance in broiler chicks. Body weight and feed intake were recorded weekly. Blood, carcass traits and proventriculus samples were collected at 21, 42 and 56 days of age. Blood samples assayed for growth hormone (GH) concentration by radio immuno assay (RIA) and ghrelin gene expression from proventriculus tissue was measured by Real Time polymerase chain reaction (PCR). Feed intake and body weight gain increased in broilers fed on low-energy diets compared with those fed on high-energy diets at 21 days of age (P
language: eng
source: Directory of Open Access Journals (DOAJ)
identifier: ISSN: 1594-4077 ; E-ISSN: 1828-051X ; DOI: 10.4081/ijas.2010.e56
fulltext: fulltext_linktorsrc
issn:
  • 1594-4077
  • 15944077
  • 1828-051X
  • 1828051X
url: Link


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titleChanges in ghrelin mRNA level, plasma growth hormone and growth performance in dietary energy and protein levels of the diet in broiler chickens
creatorKarim Nobari ; Shokoufe Ghazanfari ; Mojtaba Tahmoorespur
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subjectEnergy ; Protein ; Plasma Growth Hormone ; Ghrelin Gene Expression ; Broiler ; Agriculture
descriptionWe studied the effects of different energy and protein contents of the diet on performance, growth hormone concentration and ghrelin gene expression in broiler chicken. Two experiments were conducted to determine whether different dietary energy and protein levels alter growth hormone concentration and ghrelin mRNA abundance in broiler chicks. Body weight and feed intake were recorded weekly. Blood, carcass traits and proventriculus samples were collected at 21, 42 and 56 days of age. Blood samples assayed for growth hormone (GH) concentration by radio immuno assay (RIA) and ghrelin gene expression from proventriculus tissue was measured by Real Time polymerase chain reaction (PCR). Feed intake and body weight gain increased in broilers fed on low-energy diets compared with those fed on high-energy diets at 21 days of age (P<0.0001). Also, increasing dietary energy improved feed conversion (FCR) at 22-42 days of age in broiler chicken (P<0.0001). Increasing levels of protein increased feed intake, body weight gain and improved FCR as compared with low level of protein. Carcass percentage and breast percentage increased in broilers fed on high protein diets compared with those fed on low-protein diets during different periods. High-energy and low-protein diets increased abdominal fat percentage in broiler chickens. The result of this experiment indicated that there was no effect of different dietary energy and protein levels on growth hormone concentration and ghrelin gene mRNA expression for broiler chicken.
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description

We studied the effects of different energy and protein contents of the diet on performance, growth hormone concentration and ghrelin gene expression in broiler chicken. Two experiments were conducted to determine whether different dietary energy and protein levels alter growth hormone concentration and ghrelin mRNA abundance in broiler chicks. Body weight and feed intake were recorded weekly. Blood, carcass traits and proventriculus samples were collected at 21, 42 and 56 days of age. Blood samples assayed for growth hormone (GH) concentration by radio immuno assay (RIA) and ghrelin gene expression from proventriculus tissue was measured by Real Time polymerase chain reaction (PCR). Feed intake and body weight gain increased in broilers fed on low-energy diets compared with those fed on high-energy diets at 21 days of age (P<0.0001). Also, increasing dietary energy improved feed conversion (FCR) at 22-42 days of age in broiler chicken (P<0.0001). Increasing levels of protein increased feed intake, body weight gain and improved FCR as compared with low level of protein. Carcass percentage and breast percentage increased in broilers fed on high protein diets compared with those fed on low-protein diets during different periods. High-energy and low-protein diets increased abdominal fat percentage in broiler chickens. The result of this experiment indicated that there was no effect of different dietary energy and protein levels on growth hormone concentration and ghrelin gene mRNA expression for broiler chicken.

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We studied the effects of different energy and protein contents of the diet on performance, growth hormone concentration and ghrelin gene expression in broiler chicken. Two experiments were conducted to determine whether different dietary energy and protein levels alter growth hormone concentration and ghrelin mRNA abundance in broiler chicks. Body weight and feed intake were recorded weekly. Blood, carcass traits and proventriculus samples were collected at 21, 42 and 56 days of age. Blood samples assayed for growth hormone (GH) concentration by radio immuno assay (RIA) and ghrelin gene expression from proventriculus tissue was measured by Real Time polymerase chain reaction (PCR). Feed intake and body weight gain increased in broilers fed on low-energy diets compared with those fed on high-energy diets at 21 days of age (P<0.0001). Also, increasing dietary energy improved feed conversion (FCR) at 22-42 days of age in broiler chicken (P<0.0001). Increasing levels of protein increased feed intake, body weight gain and improved FCR as compared with low level of protein. Carcass percentage and breast percentage increased in broilers fed on high protein diets compared with those fed on low-protein diets during different periods. High-energy and low-protein diets increased abdominal fat percentage in broiler chickens. The result of this experiment indicated that there was no effect of different dietary energy and protein levels on growth hormone concentration and ghrelin gene mRNA expression for broiler chicken.

pubTaylor & Francis Group
doi10.4081/ijas.2010.e56
oafree_for_read
date2010-09-01