Anatomical Response to Selection for Four-Week Body Mass in Japanese Quail

The Auk ◽  
1985 ◽  
Vol 102 (2) ◽  
pp. 323-333 ◽  
Author(s):  
Robert E. Ricklefs ◽  
Henry L. Marks
Keyword(s):  
Body Mass ◽  
Japanese Quail ◽  
Response To Selection ◽  
Selection For

scholarly journals Response to selection for feed conversion ratio in Japanese quail

2010 ◽  
Vol 89 (8) ◽  
pp. 1590-1598 ◽  
Author(s):  
S. Varkoohi ◽  
M. Moradi Shahr Babak ◽  
A. Pakdel ◽  
A. Nejati Javaremi ◽  
M. Zaghari ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Response To Selection ◽  
Feed Conversion ◽  
Selection For

scholarly journals Erratum to “Response to selection for feed conversion ratio in Japanese quail” (Poult. Sci. 89:1590–1598)

2011 ◽  
Vol 90 (1) ◽  
pp. 295 ◽  
Author(s):  
S. Varkoohi ◽  
M. Moradi Shahr Babak ◽  
A. Pakdel ◽  
A. Nejati Javaremi ◽  
M. Zaghari ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Response To Selection ◽  
Feed Conversion ◽  
Selection For

Effects of divergent selection for growth on egg quality traits in Japanese quail

2016 ◽  
Vol 56 (11) ◽  
pp. 1797 ◽  
Author(s):  
Mohammed A. F. Nasr ◽  
Mahmoud S. El-Tarabany ◽  
Michael J. Toscano
Keyword(s):  
Body Mass ◽  
Japanese Quail ◽  
Egg Quality ◽  
Control Line ◽  
Quality Traits ◽  
Shell Weight ◽  
External Shell ◽  
Selection For ◽  
And Control ◽  
The Impact

The experiment was designed to investigate the impact of selection for increased body mass on external and internal egg quality traits of Japanese quail. Three hundred and sixty Japanese quail, divergently selected over three generations for different body mass at 4 weeks of age, were used. Quail were homogeneously divided into three groups each consisting of 120 birds: high body mass (HBM), low body mass (LBM) and Control. ANOVA was used to detect the effect of selection on egg quality. In addition, correlation between external and internal egg quality traits was measured. Our results revealed that HBM quail laid heavier eggs (P = 0.03 compared with LBM but not significantly different with Control quail) with a higher external (shell thickness, shell weight, eggshell ratio and eggshell density, P = 0.0001) and internal egg quality score (albumen weight, P = 0.003; albumen ratio, P = 0.01; albumen height, yolk height, yolk index and Haugh unit, P = 0.0001) when compared with both the Control and LBM. The egg surface area and yolk diameter were significantly higher in HBM when compared with the LBM but not with the Control line. Egg weight was positively correlated with albumen weight (r = 0.54, P = 0.0001), albumen ratio (r = 0.14, P = 0.05), yolk height (r = 0.27, P = 0.0001), yolk weight (r = 0.23, P = 0.002), yolk diameter (r = 0.14, P = 0.05) and yolk index (r = 0.21, P = 0.005) but was negatively correlated with yolk ratio (r = –0.16, P = 0.03). Our results indicate that selection for higher body mass might result in heavier eggs and superior egg quality.

Correlated response to selection for litter size in pigs: II. Carcass, meat, and fat quality traits

2002 ◽  
Vol 80 (10) ◽  
pp. 2566 ◽  
Author(s):  
J. Estany ◽  
D. Villalba ◽  
M. Tor ◽  
D. Cubiló ◽  
J. L. Noguera
Keyword(s):  
Litter Size ◽  
Correlated Response ◽  
Quality Traits ◽  
Response To Selection ◽  
Fat Quality ◽  
Selection For

Simulation of Response to Selection for Body Weight in Rainbow Trout

1981 ◽  
Vol 31 (4) ◽  
pp. 426-432 ◽  
Author(s):  
Sampo Sirkkomaa ◽  
Ulf B. Lindström
Keyword(s):  
Body Weight ◽  
Rainbow Trout ◽  
Response To Selection ◽  
Selection For

scholarly journals Demography, heritability and genetic correlation of feline hip dysplasia and response to selection in a health screening programme

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Matthew Low ◽  
Per Eksell ◽  
Kjell Högström ◽  
Ulrika Olsson ◽  
Lars Audell ◽  
...  
Keyword(s):  
Genetic Correlation ◽  
Body Mass ◽  
Hip Dysplasia ◽  
Selective Breeding ◽  
Screening Programme ◽  
Large Body ◽  
Health Screening ◽  
Response To Selection ◽  
Body Type ◽  
Breeding Programmes

AbstractFeline hip dysplasia (FHD) is a debilitating condition affecting the hip joints of millions of domestic cats worldwide. Despite this, little is known about FHD except that it is relatively common in the large breed Maine Coon. We used 20 years of data from 5038 pedigree-registered Maine Coon cats in a radiographic health screening programme for FHD to determine, for the first time, its heritability, genetic correlation to body mass and response to selection. FHD prevalence was 37.4%, with no sex predilection; however, FHD severity increased with age and body mass. Heritability of the radiographic categories used to classify FHD severity was 0.36 (95%CI: 0.30–0.43). The severity of FHD symptoms was also genetically correlated with body mass (0.285), suggesting that selection for a large body type in this breed concurrently selects for FHD. Support for this was found by following generational responses to selective breeding against FHD. Not only did selective breeding successfully reduce the severity of FHD symptoms in descendants, but these cats were also smaller than their ancestors (−33g per generation). This study highlights the value of breeding programmes against FHD and cautions against breed standards that actively encourage large bodied cats.

scholarly journals Response to selection for growth in an interspecific hybrid between Oreochromis mossambicus and O. niloticus in two distinct environments

Aquaculture ◽  
2014 ◽  
Vol 430 ◽  
pp. 159-165 ◽  
Author(s):  
Hugues de Verdal ◽  
Westly Rosario ◽  
Marc Vandeputte ◽  
Nerafe Muyalde ◽  
Pierre Morissens ◽  
...  
Keyword(s):  
Interspecific Hybrid ◽  
Oreochromis Mossambicus ◽  
Response To Selection ◽  
Selection For
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