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Organic farming production. Effect of age on the productive yield and egg quality of hens of two commercial hybrid lines and two local breeds

Type de document
journalArticle
Langue source
Anglais
Titre français
Titre anglais
Organic farming production. Effect of age on the productive yield and egg quality of hens of two commercial hybrid lines and two local breeds
Auteur(s)
  • RIZZI Chiara
  • CHIERICATO Gian Maria
Editeur(s)
Autre(s)
Id
3DPHG25K
Version
2599
Url zotero
https://www.zotero.org/groups/2567444/items/3DPHG25K
Date ajout
21 décembre 2020 16:18
Date modification
21 décembre 2020 16:18
Résumé anglais
Hens of 2 hybrid lines (Hy Line Brown - HLB, Hy Line White - HLW) and 2 local breeds (Robusta maculata – RM and Ermellinata of Rovigo – ER) were reared following the organic production procedure and their egg yield and quality were studied at two different ages (30 and 42 weeks). The experimental period was between 26 and 42 weeks of age, starting in summer and lasting until autumn. Age significantly (P<0.01) affected the hen-day egg production and the daily egg mass of the HLB (84 vs. 94% and 44.5 vs. 59.4 g), of the HLW (81 vs. 89% and 42.4 vs. 54.7 g) and of the RM hens (27 vs. 63% and 12.9 vs. 36.7 g), which was the least precocious. Age did not affect the daily egg production of the ER hens (which was maintained around 58%), although it was observed a slight (P<0.05) increase of the daily egg mass (28.6 vs. 32.1 g). Age increased (P<0.01) the egg weight, yolk colour, yolk percentage and yolk:albumen ratio and decreased the albumen percentage in all groups.
Note
None
CRAW tags
  • AB - Spécifique
  • FREDO mode élevage, bien-être et qualité
  • FREDO qualité des produits
  • GEO Italie
  • génétique
  • oeufs
  • poule pondeuse
  • race
  • volaille
WEB tags
  • egg quality
  • genotype
  • laying hen
  • organic farming
Titre de la publication
Italian Journal of Animal Science
Volume
4
Pages
160-162
Date caractères
January 1, 2005
Date publication
1 janvier 2005
Doi
10.4081/ijas.2005.3s.160 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique
Issn
null L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.
Url publication
https://doi.org/10.4081/ijas.2005.3s.160