Serum color as biomarker of digestive efficiency of poultry

Patent metadata

Field	Value
Publication number	US-11340211-B2
Application number	US-201917275987-A
Country	US
Kind code	B2
Filing date	Sep 13, 2019
Priority date	Sep 14, 2018
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

The invention relates to an in vitro method for evaluating digestive efficiency (DE) of poultry, in particular chickens, by measuring color of a sample of liquid fraction of blood of said poultry.

First claim

The invention claimed is:

1. An in vitro method for evaluating digestive efficiency (DE) of poultry, by measuring color of a sample of liquid fraction of blood of said poultry.

2. The in vitro method of claim 1 , wherein the sample of liquid fraction of blood is selected in the group consisting of plasma sample or serum sample.

3. The in vitro method of claim 1 , wherein the sample of liquid fraction of blood is serum sample.

4. The in vitro method according to claim 1 , wherein poultry is selected in the group consisting of chicken, hen, turkey, goose, duck, guinea fowl, quail and pigeon.

5. The in vitro method of claim 4 , wherein poultry is chicken.

6. The in vitro method of claim 1 , wherein the sample of liquid fraction of blood is a serum sample of chicken.

7. The in vitro method according to claim 1 , wherein the color of a sample of liquid fraction of blood, is measured by absorption spectrum between 400 and 520 nm.

8. The in vitro method according to claim 1 , wherein the samples of liquid fraction of blood, are placed in well plates and the absorption spectrum is measured with a spectrophotometer.

9. The in vitro method according to claim 1 , wherein the samples of liquid fraction of blood are serum samples and the absorption spectrum is measured at 492 nm wavelength.

10. A method for selecting poultry having an improved digestive efficiency (DE) comprising the in vitro method for evaluating digestive efficiency (DE) of poultry by measuring color of a sample of liquid fraction of blood of said poultry.

11. The method according to claim 10 , comprising a step of selecting poultry, having higher values of absorbance in serum sample at 492 nm wavelength.

12. A method for selecting feedstuffs or diets and/or producing feedstuffs or diets adapted and/or optimized for poultry comprising the in vitro method for evaluating digestive efficiency (DE) of poultry by measuring color of a sample of liquid fraction of blood of said poultry.

Assignees

• Institut National De Rech Pour Lagriculture Lalimentation Et Lenviroment
• Univ Tours
• Institut National De Rech Pour Lagriculture Lalimentation Et Lenvironnement

Inventors

• Grasteau Sandrine
• Duval Elisabeth
• Beauclercq Stéphane

Classifications

• A23K50/75

  for poultry · CPC title

• G01N33/52

  Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper {and including single- and multilayer analytical elements (immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72)} · CPC title

• G01N33/49 Primary

  Blood {(chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80)} · CPC title

• G01N21/3103

  Atomic absorption analysis · CPC title

• A01K43/00

  Testing, sorting or cleaning eggs (investigating or analysing eggs, e.g. by candling G01N33/08); {Conveying devices (for batteries A01K31/165); Pick-up devices} · CPC title