Genetic parameter estimates of weekly body weight and Richard’s growth curve in Japanese quail

2016 ◽  
Author(s):  
S. Kaplan ◽  
D. Narinç ◽  
E. K. Gürcan
Keyword(s):  
Body Weight ◽  
Japanese Quail ◽  
Growth Curve ◽  
Genetic Parameter ◽  
Parameter Estimates

scholarly journals Genetic parameter estimates of growth curve and reproduction traits in Japanese quail

2014 ◽  
Vol 93 (1) ◽  
pp. 24-30 ◽  
Author(s):  
Dogan Narinc ◽  
Emre Karaman ◽  
Tulin Aksoy ◽  
Mehmet Ziya Firat
Keyword(s):  
Japanese Quail ◽  
Growth Curve ◽  
Genetic Parameter ◽  
Parameter Estimates ◽  
Reproduction Traits

Genetic Parameter Estimates for Growth Curve Characteristics of Deccani Sheep

2017 ◽  
pp. 1
Author(s):  
Ravindranath Nimase ◽  
Yogesh Bangar ◽  
Charudatta Nimbalkar ◽  
Onkar Shinde ◽  
Vinu Lawar
Keyword(s):  
Growth Curve ◽  
Genetic Parameter ◽  
Parameter Estimates

scholarly journals Genetic parameter estimates for important traits on the fifth generation in red tilapia in Vietnam

2021 ◽  
Vol 20 (1) ◽  
pp. 49-57
Author(s):  
Sang V. Nguyen
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Genetic Parameters ◽  
Genetic Parameter ◽  
Genetic Correlations ◽  
Parameter Estimates ◽  
Environment Interaction ◽  
Body Colour ◽  
Red Tilapia ◽  
Gxe Interaction

Genetic parameters comprising heritability, genetic correlation and genotype by environment interaction (GxE) for growth survival rate and body colour at harvest were estimated on the 5th selective generation of red tilapia grown in two environments, freshwater and brackishwater ponds. A total of 116 full-half-sib families was produced as well as 4,432 and 3,811 tagged individuals were tested in freshwater and brackishwater ponds, respectively. Genetic parameters were estimated by ASReml 4.1 software. The heritability for body weight and survival rate was high while medium heritability for body colour in freshwater was observed. The heritability for those traits of red tilapia in brackishwater. Together with the figures in earlier publication on previous generations (G1 to G4) in the same selective population, the expected medium to high response acquires if selection is done for each trait. Genetic correlations among harvest body weight, survival rate and body colour are insignificantly different and ranging from -0.25 to 0.37 (P > 0.05). These results implied that selection on one trait do not influence on responses of the other traits. GxE interaction for body weight and body colour between two tested environments is mostly negligible with genetic correlations ranging from 0.63 - 0.80 while it is important for survival trait (rg = -0.17 ± 0.40).

scholarly journals Comparative analyses of growth response and genetic parameter estimates of some quantitative traits in three broiler strains in South-West, Nigeria

2021 ◽  
Vol 41 (2) ◽  
pp. 12-18
Author(s):  
A. J. Sanda ◽  
O. Olowofeso ◽  
M. A. Adeleke ◽  
A. O. Oso ◽  
S. O. Durosaro ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Broiler Chicken ◽  
Quantitative Traits ◽  
Growth Response ◽  
Genetic Parameter ◽  
Parameter Estimates ◽  
Comparative Analyses ◽  
South West ◽  
Linear Body

A total of 150 pure strain broiler chicks comprising 50 each of Arbor Acre, Marshall and Ross were used for this experiment which lasted 10 weeks at the Poultry Breeding Unit of the Directorate of University Farms (DUFARMS) of the Federal University of Agriculture, Abeokuta (FUNAAB), Ogun State Nigeria. The experiment was carried out to make comparative analyses of growth response and genetic parameter estimates of some quantitative traits (Body weight and linear body measurement) in Arbor Acre, Marshall and Ross broiler chicken strains in South-West, Nigeria. Growth performance data was collected from week 3 to week 10 and analysed using the Generalized Linear Model. Marshall broiler chicken strain had the highest growth rate and better growth performance followed by Ross and Arbor Acre in terms of body weight and linear body dimensions. Marshall and Ross attained mean weight of 1964.50±43.10 g and 1913.02±41.05 g, respectively, which were superior (p < 0.05) to Arbor Acre 1831.63±36.28 g at 10 weeks of age. Marshall Broiler chicken strain also had the highest estimates of heritability for body weight 0.46±0.04, followed by Arbor Acre and Ross with estimates of heritability of 0.38±0.12 and 0.26±0.06, respectively. However considering the linear body measurements, none of the broiler chicken strains maintained high estimates of heritability from 3rd to 10th week.

scholarly journals Heritabilities of growth curve parameters and age-specific expression of genetic variation under two different feeding regimes in Japanese quail (Coturnix coturnix japonica)

1993 ◽  
Vol 62 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Sabine G. Gebhardt-Henrich ◽  
Henry L. Marks
Keyword(s):  
Body Weight ◽  
Genetic Variation ◽  
Japanese Quail ◽  
Growth Curve ◽  
Genetic Correlations ◽  
Growth Period ◽  
Restricted Feeding ◽  
Tarsus Length ◽  
Final Size ◽  
Ad Libitum

SummaryThis study investigated genetic variation in growth and final size in relationship to differences in heritabilities under good and poor feeding conditions. Heritabilities of growth and final size were estimated for several traits underad libitumand restricted feeding conditions. A 30% feed restriction from hatching to 44 days of age in Japanese quail chicks decreased body weight and tarsus length at 44 days of age and the length of the third primary covert feather at 24 days of age relative to controls fedad libitum. Wing length at 44 days of age was not significantly different forad libitumfed and restricted quail. Genetic variances for body weight and tarsus length were very large throughout growth which resulted in heritability estimates close to one for these traits. The genetic correlations among feeding treatments were low, indicating that different genes were affecting growth under the two treatments. Growth was described by the components: asymptote, growth period, and shape of the growth curve following the modified Richards growth curve model (Brisbinet al.1986). Tarsus length, which had high heritability of the parameter ‘growth period’ of the model, tended to display a higher heritability under the restriction than underad libitumfeeding. Body weight and feather length, which had either no heritable or low heritable ‘growth periods’ estimates, tended to be more heritable underad libitumfeeding. The shape parameter of the growth curve was not heritable for any trait, except tarsus length under restricted feeding.

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