Effect of Selection for Weight of Early Eggs on Egg Production Traits in Japanese Quail

Deen, Mohamed Bahie El; Nour, Ayman A.; Tahawy, W. S. El; Fouad, Hala A.

doi:10.3923/ajpsaj.2015.179.190

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Our findings agree with those reported for AFE 4,32,36,45 . However, a different trend reported by Bahie El-Deen et al 46 who showed that the overall means of AFE were 52.61 and 50.45 d for control and selected lines in Japanese quail.…”

Section: Resultsmentioning

confidence: 69%

Correlated Responses to Short-term Selection for Egg Production Traits in Japanese Quail

El-Attr¹,

Iraqi²

2020

Asian J. of Poultry Science

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Background and Objective: Poultry industry aims mainly to produce genetically superior animals with high productivity of egg and meat.On a commercial scale, the purpose of most quail genetic improvement programs is to select genetically superior birds for meat and egg production. The objective of this study was to investigate the effect of short-term selection through four generations of selection in Japanese quail on egg number at the first 90 days of laying, estimate genetic parameters of egg production traits and estimate the correlated response to selection. Materials and Methods: Data of 1,352 female Japanese quails were collected through five consecutive generations (base and four selected generations) to estimate genetic gain, depending on breeding values, for Age at First Egg (AFE), Body Weight at Sexual Maturity (BWSM), Weight at First Egg (WFE), Egg Number at first 90 days (EN90D) and Average Egg Weight (AEW). Results: Estimates of heritability for egg production traits were ranged from 0.17 to 0.26. Moreover, positive genetic correlations were detected (0.18 to 0.43) between all studied egg production traits, except the correlation between AFE and EN90D (-0.32). The contrast among estimates was significant (p<0.05), favoring the selected generations over the base. The cumulative selection response was favorable for all unselected traits with the superiority of the selected generations to the base generation. Conclusions: It can be concluded that early selection based on breeding value for a cumulative egg number at first 90 days of egg production can effectively improve the total egg production and other egg traits in Japanese quail through four selected generations.

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Section: Resultsmentioning

confidence: 69%

Correlated Responses to Short-term Selection for Egg Production Traits in Japanese Quail

El-Attr¹,

Iraqi²

2020

Asian J. of Poultry Science

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“…Significant generation effects for body weight as well as egg production traits were also observed by Mahmoud et al (2014). Significant (P<0.05) differences in egg weight and birth weight through generations has been reported by El-Deen et al, 2015. As per Taskin et al (2017 body weight through different generations varied significantly (P<0.01) barring the parental generations.…”

Section: Effect Of Season Of Hatch/generationmentioning

confidence: 57%

Effect of Non-genetic Factors on Growth and Production Traits in Two Strains of Japanese Quails

Sharma¹,

Sahoo²,

Dash³

et al. 2023

ASD

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Background: The growth of birds is a function of both genetics and environment involving change leading into improvement in weight, shape, size, volume, etc. Study of important non-genetic factors is important in view of formulating future selection and breeding strategies in different poultry species. Methods: The present study was done on 1246 numbers of Japanese Quails (Coturnix coturnix japonica) of two strains i.e., black and white distributed in three generations during 2020-21. The fixed effects of gender, season of hatch, strain and generations on various fortnightly body weights (FNBW), average daily weight gain (ADWG), relative growth rate (RGR) and some production traits were studied. Result: Significant (p≤0.01) differences in black and white strain as well as male and female quails for hatch weights were observed. The maximum ADG was during 4th to 6th wk whereas the RGR was highest during first fortnight (hatch-2nd wk). Significantly (p≤0.01) higher average egg weights (AEW) were observed in white quails. Part egg production (PEP) and AEWs were higher during summer and winter hatches, respectively. The present investigation elucidates the significance of different non-genetic factors on important growth and production performances for further selection in quails.

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“…The current study supports the findings of Alkan et al (2010) , who discovered a significant difference in egg weight for both lines chosen for higher body weight and egg production in Japanese quails. El-Deen et al (2015) also reported increased egg weight after two generations of selection for higher egg production compared to the control line.…”

Section: Discussionmentioning

confidence: 91%

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

Arunrao¹,

Kalaiselvi²,

Amutha³

et al. 2023

Front. Genet.

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This research investigated the growth and other production traits of four distinct lines (L1, L2, L3, and L4) of Japanese quail (Cortunix japanoica) kept in the tropical climate of Tamil Nadu, India. The traits related to body weight at different weeks and weight gain were measured in 180 birds (90 males and 90 females) per line up to the fifth week of age, and then 90 birds (females only) from the sixth to the 16th week of age, with egg production and feed efficiency parameters measured in 10 observations per line. The traits were analysed using the General Linear Model procedure, and Tukey’s HSD was used to test for statistical differences (p < 0.05) between the means for subclasses under a specific effect. The results revealed a highly significant difference (p < 0.01) in body weight from hatch to fifth week of age. At 5th week of age, the L3 and L2 did not differ (p > 0.05) based on Tukey test; therefore, both presented the highest values and were statistically significant (p < 0.01) with L4 with a lowest value of 203.62 g. The cumulative fifth week feed conversion ratio showed non-significant difference (p > 0.05) at first and second week, and highly significant difference (p < 0.01) from third to fifth week of age. The age at 50 per cent egg production was 60.2 (L4), 61.4 (L2), 65.1 (L3) and 66.0 (L1) days and the L1 egg production differed significantly (p < 0.01) from L4 line. The highest bodyweight (g) during the laying period (at 15 weeks of age) was observed in L2 (327.08) and L3 (326.54) and differed significantly (p < 0.01) from L1 (309.24) as well as L4 (288.69) lines. The mean egg weight (g) of different lines showed non-significant difference (p > 0.05) at all weeks, except at 11th week of age (p < 0.01). The mean feed consumption (g)/bird/day differed significantly (p < 0.01) from 6th to 16th week of age, except at sixth and eighth week of age, where it was non-significant (p > 0.05). The overall feed efficiency/dozen of eggs (from 6th to 16th weeks) ranged from 1.33 (L1) to 1.98 (L3). The livability from 6 to 16 weeks of age was 100 per cent in all the lines. In order to boost Japanese quail production in the tropics, L3 and L4 may be selected for body weight and egg production, respectively.

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Effect of Selection for Weight of Early Eggs on Egg Production Traits in Japanese Quail

Cited by 5 publications

References 8 publications

Correlated Responses to Short-term Selection for Egg Production Traits in Japanese Quail

Correlated Responses to Short-term Selection for Egg Production Traits in Japanese Quail

Effect of Non-genetic Factors on Growth and Production Traits in Two Strains of Japanese Quails

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

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