| Digestive tract measurements and histological adaptation in broiler lines divergently selected for digestive efficiency. | |
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MedLine Citation:
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PMID: 20709981 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two lines of broilers divergently selected for a high (D+) or a low (D-) AME(n) on a wheat-based diet were studied for morphological and histological characteristics of the digestive tract. A total of 630 birds of both lines were slaughtered after a 23-d feeding period. Digestive tract morphology and intestinal histology were investigated on a total of 24 birds to describe the consequences of divergent selection. Birds of the D+ line had 34% heavier gizzards (P < 0.001) and 22% heavier proventriculi than their D- counterparts. In contrast, intestines were 15 to 40% heavier in D- birds, mainly in the jejunum (P < 0.001) and ileum (P < 0.001). Intestinal segments were also longer (between 3 and 6%) in the D- birds. Intestinal villi were larger and longer in D- birds (P < 0.001), mainly in the jejunum (14 to 16%), and crypts were 10 to 15% deeper for the 3 intestinal segments in D- birds (P < 0.001). Muscle layers of the intestine were 17 to 24% thicker (P < 0.001) and goblet cells were 27 to 34% more numerous in the jejunum and ileum of D- birds (P = 0.027). This new characterization of the 2 lines shows that divergent selection based on AME(n) modified the morphology of the proventriculus and gizzard, suggesting greater activity of this compartment in D+ than in D- birds. Intestinal adaptation revealed by visceral organ weight and length and histological modifications in D- birds can be viewed as an attempt to compensate for the low functionality of the gastric area. |
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Authors:
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H de Verdal; S Mignon-Grasteau; C Jeulin; E Le Bihan-Duval; M Leconte; S Mallet; C Martin; A Narcy |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Poultry science Volume: 89 ISSN: 0032-5791 ISO Abbreviation: Poult. Sci. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-16 Completed Date: 2010-10-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401150 Medline TA: Poult Sci Country: United States |
Other Details:
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Languages: eng Pagination: 1955-61 Citation Subset: IM |
Affiliation:
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INRA, UR83 Recherches Avicoles, F-37380, Nouzilly, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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genetics* Animals Chickens / anatomy & histology*, genetics*, physiology Diet / veterinary Digestion / genetics*, physiology Gastrointestinal Tract / anatomy & histology* Organ Size / genetics Selection, Genetic Triticum |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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