Influence of glycerin and lecithin inclusion in the diet on liver characteristics and lipid fraction in the serum of brownegg laying hens at 55 week of age

Mandalawi, H. A. and Redón, Miguel and García, J. and Menoyo Luque, David and Gonzalez Mateos, Gonzalo (2015). Influence of glycerin and lecithin inclusion in the diet on liver characteristics and lipid fraction in the serum of brownegg laying hens at 55 week of age. In: "Poultry Science Association 104th Annual Meeting", 27/07/2015-30/07/2015, Louisville, Kentucky. p. 1.

Description

Title: Influence of glycerin and lecithin inclusion in the diet on liver characteristics and lipid fraction in the serum of brownegg laying hens at 55 week of age
Author/s:
  • Mandalawi, H. A.
  • Redón, Miguel
  • García, J.
  • Menoyo Luque, David
  • Gonzalez Mateos, Gonzalo
Item Type: Presentation at Congress or Conference (Article)
Event Title: Poultry Science Association 104th Annual Meeting
Event Dates: 27/07/2015-30/07/2015
Event Location: Louisville, Kentucky
Title of Book: Poultry Science Association
Date: 2015
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The effects of the inclusion of raw glycerin (GLYC) and raw lecithin, in the diet (23 to 55 wk) on liver characteristics and various serum lipid fractions were studied in brown egg-laying hens at 55 wk of age. The control diets were based on corn, soybean meal, and 4% supplemental fat and contained 2,750 kcal AMEn/kg, 16.5% CP, and 0.73% digestible Lys. The diets were arranged as a 2 × 3 factorial with 2 levels of GLYC (0 and 7%) and 3 animal fat to lecithin ratios (4:0, 2:2, and 0:4%). Each treatment was replicated 8 times and the experimental unit was a cage with 10 hens. At 55 wk of age, 2 hens per cage replicate were randomly selected, weighed individually, and slaughtered by CO2 inhalation. Liver was immediately removed and weighed and the color recorded by spectrophotometry. In addition, blood samples from one bird per replicate were collected from the wing vein and the concentration of total cholesterol, low and high density lipoprotein cholesterol, and triglycerides were determined. The data were analyzed as a completely randomized design and the main effects of GLYC and lecithin content of the diet and the interactions were determined. No interactions between GLYC and lecithin content of the diets were detected for any of the variables studied. Liver characteristics and serum lipid traits were not affected by the inclusion of GLYC in the diet. The substitution of animal fat by lecithin, however, reduced the redness (a* 14.9 to 13.8) and yellowness (b* 8.60 to 7.20) values of the liver (P < 0.05) but did not affect the content of serum lipid fractions. It is concluded that the inclusion of GLYC and lecithin in the diet did not affect liver size or serum lipid fraction. However, the inclusion of lecithin reduced the a* and b* value of the liver

More information

Item ID: 41568
DC Identifier: https://oa.upm.es/41568/
OAI Identifier: oai:oa.upm.es:41568
Official URL: http://www.poultryscience.org/meetings.asp?autotry=true&ULnotkn=true
Deposited by: Memoria Investigacion
Deposited on: 24 Jun 2016 14:49
Last Modified: 24 Jun 2016 14:49
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