GENETIC AND NON-GENETIC PARAMETERS FOR MILK PRODUCTION TRAITS OF DAMASCUS GOAT IN JORDAN

This study examined the effects of genetic and some non-genetic factors on total milk yield (TMY), test-day milk yield (TDM), pre-weaning (PRMY), and post-weaning milk yield (POMY) using a total of 1167 lactation records of (Damascus) does over the years of 1998 to 2001 at Al-Walla Agricultural Rese...

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Bibliographic Details
Published inIraqi journal of agricultural science Vol. 54; no. 1; pp. 156 - 160
Main Authors Jawasreh, Khaleel I, Alkass, Jalal E
Format Journal Article
LanguageEnglish
Published Baghdad Jami'at Baghdad 01.01.2023
Baghdad University
Subjects
Agricultural production
Agricultural research
Estimates
Genetic factors
Goats
Heritability
Lactation
Milk
Milk production
Selection, Goat, Lactation, Shami goat
Weaning
Lebanon
Iraq
Cyprus
Syria
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Summary:This study examined the effects of genetic and some non-genetic factors on total milk yield (TMY), test-day milk yield (TDM), pre-weaning (PRMY), and post-weaning milk yield (POMY) using a total of 1167 lactation records of (Damascus) does over the years of 1998 to 2001 at Al-Walla Agricultural Research Station, Ministry of Agriculture. The General Linear Model (GLM) was employed to analyze the data. TMY, TDM, PRMY, and POMY had respective overall averages of 280.3 kg, 1.45 kg, 135.7 kg, and 144.5 kg. Age, doe weight, birth type, and year of kidding all significantly influenced the variables under study.  Heritability estimates were 0.22, 0.17, 0.17 and 0.26 for TMY, TDM, PRMY and POMY, respectively. The corresponding estimates of repeatabilities were 0.44, 0.50, 0.32 and 0.33. Genetic correlation between studied traits ranged between 0.52 and 0.91.
ISSN:0075-0530
2410-0862
DOI:10.36103/ijas.v54i1.1687