Memorias de investigación
Ponencias en congresos:
Influence of body weight of the pullets at hatch on egg production at the onset of the subsequent laying period
Año:2015
Áreas de investigación
  • Producción animal
Datos
Descripción
We studied the influence of pre-incubation weight of eggs (EW) laid by 24 wk-old brown laying breeders on egg production from 18 (start of egg production) to 22 wk of age (average egg production across EW treatments of 87.8%). The experiment consisted in 7 treatments based on the initial EW (47 to 53 g with 1 g difference between groups) Average BW of the extreme groups varied at hatching from 32.5 to 35.4 g, respectively. Feed intake, egg production, and egg weight were recorded weekly by replicate as well as for the entire experiment (18 to 22 wk of age). Hens were weighed by replicate at the beginning and at the end of the experiment. From these data, ADFI, egg production, egg weight, egg mass, feed conversion ratio per kilogram of eggs and per dozen of eggs, and BW gain were calculated by week and for the entire experiment. Also, the number of dirty, broken, and shell-less eggs was recorded daily by replicate in all eggs produced. Data were analyzed as a completely randomized design with 7 treatments differing in the initial pre-hatching EW. Effects of EW on the variables studied were partitioned into linear and quadratic components. EW did not affect the age at which pullets reached 50% egg production, cumulative egg production, or BW gain of the hens from 18 to 22 wk of age. Egg weight and the proportion of dirty, broken, and shell-less eggs were not affected by the BW of the pullets at hatching. In summary, small eggs (>47 g) laid by young, healthy laying breeders, can be used successfully to produce high quality pullets
Internacional
Si
Nombre congreso
Poultry Science Association 104th Annual Meeting
Tipo de participación
960
Lugar del congreso
Louisville, Kentucky
Revisores
Si
ISBN o ISSN
0032-5791
DOI
Fecha inicio congreso
27/07/2015
Fecha fin congreso
30/07/2015
Desde la página
146
Hasta la página
146
Título de las actas
Poultry Science Association 104th Annual Meeting
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Husham Abdulsattar Dawood . UPM
  • Autor: Beatriz Saldaña Mancebo UPM
  • Autor: Pilar Guzmán UPM
  • Autor: Raúl Rodríguez Ibérica de Tecnología Avícola (Ibertec) S.A.U, Valladolid, Spain.
  • Autor: Lourdes Camara Garcia UPM
  • Autor: Gonzalo Gonzalez Mateos UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Producción Animal
  • Departamento: Producción Agraria