Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Glycerin and lecithin inclusion in diets for brown egg-layinghens: Effects on egg production and nutrient digestibility
Year:2015
Research Areas
  • Animal production
Information
Abstract
tThe effects of the inclusion of raw glycerin (GLYC) and lecithin in the diet on egg production,egg quality and total tract apparent retention (TTAR) of dietary components was studied inbrown egg-laying hens from 23 to 51 wk of age. The experimental design was completelyrandomized with six diets combined as a 2 × 3 factorial with two levels of GLYC (0 vs.70 g/kg) and three animal fat to lecithin ratios (40:0, 20:20 and 0:40 g/kg). Each treatmentwas replicated eight times and the experimental unit was a cage with ten hens. Productionwas recorded by replicate every 28-d period and cumulatively. For the entire experiment,the inclusion of GLYC in the diet hindered feed conversion ratio per kilogram of eggs (2.071vs. 2.039; P < 0.05) but did not affect any of the other production or egg quality traits studied.The replacement of animal fat by lecithin (40:0, 20:20 and 0:40 g/kg) increased egg weight(60.1, 60.7 and 61.8 g, respectively; P < 0.001) and egg mass production (56.8, 57.5 and58.8 g/d, respectively; P < 0.01) and improved yolk color as measured by the DSM colorfan (9.2, 9.2 and 9.5, respectively; P < 0.001) and feed conversion ratio per kilogram of eggs(2.072, 2.068 and 2.027, respectively; P < 0.05). Feed intake, egg production and body weightgain, however, were not affected. The inclusion of GLYC in the diet did not affect nutrientretention but lecithin inclusion improved TTAR of dry matter (P < 0.05), organic matter(P < 0.05), ether extract (P < 0.001) and gross energy (P < 0.001). In summary, the inclusionof 70 g glycerol/kg diet hindered feed conversion ratio per kilogram of eggs but did notaffect any other production or digestibility trait. The replacement of animal fat by lecithinimproved egg weight, egg yolk color and nutrient digestibility. Consequently, lecithin canbe used as a lipid source in laying hen diets with beneficial effects on egg production
International
Si
JCR
Si
Title
Animal Feed Science And Technology
ISBN
0377-8401
Impact factor JCR
2,086
Impact info
Datos JCR del año 2013
Volume
10.1016/j.anifeedsci.2015.07.019
Journal number
209
From page
145
To page
156
Month
SIN MES
Ranking
Participants
  • Autor: Husham Abdulsattar Dawood (UPM)
  • Autor: Rosa Pilar Lazaro Garcia (UPM)
  • Autor: Miguel Redón (Lasenor Emul S. L.)
  • Autor: Jorge Herrera (Camar Agroalimentaria S.L.)
  • Autor: David Menoyo Luque (UPM)
  • Autor: Gonzalo Gonzalez Mateos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Producción Animal
  • Departamento: Producción Agraria
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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