Effect of digestible threonine level of dietar on productivo performance, commercial ego grading and ego Quality of 55 to 61 week-old playing heno

Callejo Ramos, Antonio; Dos Santos, Andrea Luciana; Nicodemus Martin, Nuria; Gutiérrez del Alamo, A.; Buxade Carbo, Carlos; Borges Amorim, Alessandro y Dib Saleh, Mayra Anton (2017). Effect of digestible threonine level of dietar on productivo performance, commercial ego grading and ego Quality of 55 to 61 week-old playing heno. "Journal of Veterinary Health Care", v. 1 (n. 2); pp. 18-25. ISSN 2575-1212. https://doi.org/10.14302/issn.2575-1212.jvhc-17-1795.

Descripción

Título: Effect of digestible threonine level of dietar on productivo performance, commercial ego grading and ego Quality of 55 to 61 week-old playing heno
Autor/es:
  • Callejo Ramos, Antonio
  • Dos Santos, Andrea Luciana
  • Nicodemus Martin, Nuria
  • Gutiérrez del Alamo, A.
  • Buxade Carbo, Carlos
  • Borges Amorim, Alessandro
  • Dib Saleh, Mayra Anton
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Veterinary Health Care
Fecha: 2017
Volumen: 1
Materias:
Escuela: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Departamento: Producción Agraria
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The aim of this study was to establish the digestible threonine (dig. Thr) requirements and the ideal proportion between Thr and Lys for Isa Brown laying hens on productive traits and egg quality characteristics from 55- to 58- and 59- to 61 weeks of age. Increased levels of L-Thr were added to a basal diet that contained 3.7 g/kg of dig. Thr. Therefore, diets containing 3.7, 4.0, 4.3, 4.6, 4.9 and 5.2 g/kg of dig. Thr and a relation between Thr and Lys of 0.58, 0.63, 0.67, 0.72, 0.77 and 0.81, respectively were provided to laying hens. A total of 216 hens were distributed in a randomized design among the 6 experimental diets. There were 9 replicates per treatment, and 4 birds per replicate. Data were analyzed by repeated measures analysis using the MIXED procedure of SAS. The main effects (dig. Thr level and experimental period) and their interaction were studied. Neither the dig. Thr level nor the experimental period had effect on performance traits and egg quality. Also, commercial egg grading was not influenced by period. However, there was a quadratic effect (P<0.001) of dig. Thr level within each scale egg weight. In conclusion, diets containing more than 3.7 g/kg of dig. Thr do not improve laying hens productivity at 55- to 61-week-old.

Más información

ID de Registro: 49469
Identificador DC: http://oa.upm.es/49469/
Identificador OAI: oai:oa.upm.es:49469
Identificador DOI: 10.14302/issn.2575-1212.jvhc-17-1795
URL Oficial: https://oap-journals.org/journal/jvhc
Depositado por: Memoria Investigacion
Depositado el: 22 Feb 2018 10:11
Ultima Modificación: 22 Feb 2018 10:11
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