Influence of particle size of the main cereal of the diet on egg production, gastrointestinal tract traits, and body measurements of brown laying hens

Herrera Llorente, Jorge; Saldaña Mancebo, Beatriz; Guzmán Medina, María del Pilar; Camara Garcia, Lourdes y Gonzalez Mateos, Gonzal (2017). Influence of particle size of the main cereal of the diet on egg production, gastrointestinal tract traits, and body measurements of brown laying hens. "Poultry Science", v. 96 (n. 2); pp. 440-448. ISSN 0032-5791. https://doi.org/10.3382/ps/pew256.

Descripción

Título: Influence of particle size of the main cereal of the diet on egg production, gastrointestinal tract traits, and body measurements of brown laying hens
Autor/es:
  • Herrera Llorente, Jorge
  • Saldaña Mancebo, Beatriz
  • Guzmán Medina, María del Pilar
  • Camara Garcia, Lourdes
  • Gonzalez Mateos, Gonzal
Tipo de Documento: Artículo
Título de Revista/Publicación: Poultry Science
Fecha: Febrero 2017
Volumen: 96
Materias:
Palabras Clave Informales: barley; corn; gizzard development; laying hens; particle size
Escuela: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (2MB) | Vista Previa

Resumen

The influence of the screen size used to grind the main cereal of the diet on egg production, gastrointestinal tract (GIT) development, and body measurements was studied in hens from 17 to 49 wk of age. Diets formed a 2 × 5 factorial with 2 main cereals (corn vs. barley) and 5 screen sizes of the cereal (4, 6, 8, 10, and 12 mm). Each treatment was replicated 5 times. No interactions between main cereal and screen size were observed for any of the traits studied. Cereal type and screen size did not affect feed intake, egg production, BW gain, or quality traits of the eggs. Eggs tended to be larger (P = 0.092) in hens fed the barley diet than in hens fed the corn diet. Also, feed conversion ratio tended to increase (P = 0.081) when the cereal of the diet was ground with a 4-mm screen as compared with the average of the other diets. At 49 wk of age, the relative weight (% BW) of the GIT and gizzard was greater (P < 0.05) in hens fed barley than in hens fed corn. An increase in the screen size increased linearly the relative weight of the GIT (P = 0.089), gizzard (P < 0.01), and liver (P = 0.056). None of the other GIT traits or body measurements was affected by the main cereal or the screen size. In summary, barley can substitute up to 45% of the corn in diets for laying hens without any adverse effect on egg production. Therefore, the use of one or other cereal will depend on their relative cost. An increase in screen size improved gizzard development but had little effect on hen productivity. Within the range studied, the size of the screen used for grinding the cereal had little effect on hen productivity, although the use of a 4-mm screen might increase feed conversion ratio and gizzard development.

Más información

ID de Registro: 50249
Identificador DC: http://oa.upm.es/50249/
Identificador OAI: oai:oa.upm.es:50249
Identificador DOI: 10.3382/ps/pew256
URL Oficial: https://academic.oup.com/ps/article/96/2/440/2623747
Depositado por: Memoria Investigacion
Depositado el: 23 Abr 2018 08:10
Ultima Modificación: 23 Abr 2018 08:10
  • GEO_UP4
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • InvestigaM
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM