Preference thresholds and sensory-motivated intake for lysine, methionine, threonine, and tryptophan in broiler chickens

Published: 29 December 2023| Version 1 | DOI: 10.17632/sbcmdp3b5c.1


The data collected correspond to consumption values ​​obtained from double choice tests in pairs of broiler birds arranged in a total of 16 floor-pens during32 days of productive cycle. Specifically, in this repository you can find the raw consumption data obtained from the subtraction of the offered compound and the rejected compound (that is, not consumed), from two matrices, one of them being a neutral matrix consisting of drinking water and a matrix with a compound of synthetic amino acid. The consumption data extends for a total of 32 days, which is associated with consumption data of 4 essential amino acids (lysine, methionine, threonine and tryptophan) in 8 different concentrations (0.1 to 3.5%) of all the birds in study.


Steps to reproduce

During the 32-day trial, prepared solutions of palatable compounds consisting of diluted 4 synthetic essential amino acids (lysine, methionine, threonine and tryptophan) in drinking water at specific concentrations (0.1; 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 and 3.5%) for each test day. Once prepared, was added the solutions to the trial drinkers and weighed before placing them within each pen. Following the metodology guidelines previously described in the literature (Cheled-Shoval et al., 2017), was suspended the drinkers containing the solutions from ropes arranged in each pen at the height of the birds at the start of the trial. After a 4-hour exposure to the compounds, the drinkers were removed from the pens and weighed again to obtain consumption data of the compounds through the subtraction of the compound delivered minus the compound removed whith the use of ascale and typing in Microsoft Excel®. The data obtained were refined for the analysis of preferences threshold and SMI with the use of statistical software SAS.


Universidad de Chile


Animal Nutrition, Animal Production, Poultry