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פותח על ידי קלירמאש פתרונות בע"מ -
DNA markers and crossbreeding scheme as means to select sires for heterosis in egg production of chickens
Year:
2002
Source of publication :
Animal Genetics
Authors :
לביא, אורי
;
.
Volume :
33
Co-Authors:
Atzmon, G., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Cassuto, D., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Lavi, U., Agriculture Research Organization, Volcani Centre, Bet-Dagan, Israel
Cahaner, A., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Zeitlin, G., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Hillel, J., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel, Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot 76100, Israel
Facilitators :
From page:
132
To page:
139
(
Total pages:
8
)
Abstract:
Genotypes for 24 microsatellite markers, dispersed across the chicken genome, were used to predict progeny performance and heterosis for egg production (number and mass) in 'layers' (egg-type chickens). These markers were used to evaluate genetic distance between each of 39 sires sampled from two-layer male-lines: Rhode Island Red (RIR) and White egg Leghorn (Leghorn), and a DNA pool of 30 randomly sampled females from a Brown-egg female line (Silver). Each sire was analysed for egg production across months in the laying period and cumulatively in each of three subperiods: onset (2 month), mid (9 month) and late (1 month). The average Reynolds' genetic distance between Leghorn sires and the Silver female line (θ = 0.6) was significantly higher than that between RIR sires and the Silver female line (θ = 0.5). Neither performance nor heterosis values in the RIR sire's daughters were associated with genetic distance values between sires and the Silver female line. On the other hand, performance as well as heterosis values of Leghorn's daughters were positively associated with genetic distance. This association was particularly evident in the mid-subperiod. If 25% of the most genetically distant Leghorn sires from the Silver female line had been selected in a single generation on the basis of DNA markers information only, average egg production of the crossbred daughters would have been improved by about nine eggs (3%). In principle, further improvement is possible if selection to increase genetic distance between the parental lines is carried on.
Note:
Related Files :
Animal
Animals
breeding
chromosome mapping
Female
genetic markers
Genetics
Leghorn
Male
עוד תגיות
תוכן קשור
More details
DOI :
10.1046/j.1365-2052.2002.00856.x
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21465
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:44
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Scientific Publication
DNA markers and crossbreeding scheme as means to select sires for heterosis in egg production of chickens
33
Atzmon, G., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Cassuto, D., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Lavi, U., Agriculture Research Organization, Volcani Centre, Bet-Dagan, Israel
Cahaner, A., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Zeitlin, G., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel
Hillel, J., Hebrew University, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot, Israel, Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environmental Quality Sciences, Rehovot 76100, Israel
DNA markers and crossbreeding scheme as means to select sires for heterosis in egg production of chickens
Genotypes for 24 microsatellite markers, dispersed across the chicken genome, were used to predict progeny performance and heterosis for egg production (number and mass) in 'layers' (egg-type chickens). These markers were used to evaluate genetic distance between each of 39 sires sampled from two-layer male-lines: Rhode Island Red (RIR) and White egg Leghorn (Leghorn), and a DNA pool of 30 randomly sampled females from a Brown-egg female line (Silver). Each sire was analysed for egg production across months in the laying period and cumulatively in each of three subperiods: onset (2 month), mid (9 month) and late (1 month). The average Reynolds' genetic distance between Leghorn sires and the Silver female line (θ = 0.6) was significantly higher than that between RIR sires and the Silver female line (θ = 0.5). Neither performance nor heterosis values in the RIR sire's daughters were associated with genetic distance values between sires and the Silver female line. On the other hand, performance as well as heterosis values of Leghorn's daughters were positively associated with genetic distance. This association was particularly evident in the mid-subperiod. If 25% of the most genetically distant Leghorn sires from the Silver female line had been selected in a single generation on the basis of DNA markers information only, average egg production of the crossbred daughters would have been improved by about nine eggs (3%). In principle, further improvement is possible if selection to increase genetic distance between the parental lines is carried on.
Scientific Publication
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