Influence of grinding size of the main cereal of the diet on egg production and eggs quality of brown egg laying hens from 33 to 65 weeks of age

Herrera, J. and Saldaña, B. and Cámara García, Lourdes and Berrocoso, J. and Gonzalez Mateos, Gonzalo (2018). Influence of grinding size of the main cereal of the diet on egg production and eggs quality of brown egg laying hens from 33 to 65 weeks of age. "Poultry Science", v. 97 (n. 7); pp. 2506-2515. ISSN 0032-5791. https://doi.org/10.3382/ps/pey098.

Description

Title: Influence of grinding size of the main cereal of the diet on egg production and eggs quality of brown egg laying hens from 33 to 65 weeks of age
Author/s:
  • Herrera, J.
  • Saldaña, B.
  • Cámara García, Lourdes
  • Berrocoso, J.
  • Gonzalez Mateos, Gonzalo
Item Type: Article
Título de Revista/Publicación: Poultry Science
Date: July 2018
ISSN: 0032-5791
Volume: 97
Subjects:
Freetext Keywords: barley; egg size; corn; particle size; wheat
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB) | Preview

Abstract

The influence of grinding size of the main cereal of the diet on production and egg quality traits was studied in brown hens from 33 to 65 wk of age. The experiment was completely randomized with 6 treatments arranged as a 3 × 2 factorial with 3 main cereals (barley, corn, and wheat) and 2 grinding size of the cereal (6 and 10 mm screen). Each treatment was replicated 11 times (10 hens/replicate). Diets were isonutritive and contained 2,740 kcal/kg AMEn and 16.8% CP. Egg production, ADFI, egg weight, and feed conversion ratio (FCR) were determined by period (4 wk) and for the entire experiment. Egg quality traits (percentage of undergrades, Haugh units, thickness, strength, color of the shell, and proportion of albumen, yolk, and shell) were measured also by period. No interactions between main cereal and grinding size of the main cereal of the diet were observed for any of the traits studied. Feed intake, egg production, and BW gain were not affected by diet or grinding size. Eggs were heavier (P < 0.01) in hens fed barley than in hens fed corn or wheat, probably because of the higher fat content of the barley diets. Also, FCR tended to improve in hens fed barley compared with hens fed corn or wheat (P = 0.07). Diet did not affect any of the egg quality traits studied. In summary, barley and wheat conveniently supplemented with enzymes, can be used in substitution of corn at levels of up to 55% in diets for laying hens, without any adverse effect on egg production or egg quality traits. Moreover, the substitution of corn by a combination of barley and supplemental fat increased egg size. Consequently, the inclusion of one or other cereal in the diet will depend primarily on their relative cost. Within the range studied, screen size (6 vs. 10 mm) of the cereal had limited effects on hen production.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainAGL 2014–56139UnspecifiedUnspecifiedUnspecified

More information

Item ID: 54798
DC Identifier: http://oa.upm.es/54798/
OAI Identifier: oai:oa.upm.es:54798
DOI: 10.3382/ps/pey098
Official URL: https://academic.oup.com/ps/article-abstract/97/7/2506/4972957?redirectedFrom=fulltext
Deposited by: Memoria Investigacion
Deposited on: 29 Apr 2019 11:43
Last Modified: 01 Aug 2019 22:30
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM