Open AccessREPEATABILITY OF EGG PRODUCTION, EGG WEIGHT AND EGG SHAPE OF AN EXOTIC COMMERCIAL LAYER IN NIGE
Author(s) -
K. L. Ayorinde,
C. Sado
Publication year - 2021
Publication title -
nigerian journal of animal production
Language(s) - English
Resource type - Journals
ISSN - 0331-2062
DOI - 10.51791/njap.v15i.1226
Subject(s) - repeatability , zoology , biology , production rate , mathematics , statistics , industrial engineering , engineering
Records of individual gg production, egg weight and egg index taken over a 56-day period from forty-nine 30 weeks old Hubbard layers were analyzed for estimates of repeatability of the three traits. The estimates for two, four, six and eight 7-day records varied between 0.27 and 0.40 for rate of egg production, 0.58 to 0.60 and 0.60 to 0.62 for egg weight and index (shape) respectively. The results indicate that two 7-day records were adequate for characterizing both egg weight and shape in chickens while rate of egg production requires four 7-day