Blood Plasma and Production Traits in Commercial Broiler Parent Stocks

Grunder, A. A.; Chambers, J. R.; Gavora, J. S.; Lefkovitch, L. P.

doi:10.4141/cjas83-029

Cited by 2 publications

(4 citation statements)

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“…The significant effects of sex are in agreement with the results of Alkan et al (2010) and Kosshak et al (2014) for BW and Ojo et al (2014) for SL. The results of the present study, indicating variation in TP and Chol levels between male and female quails, are in line with the findings of Grunder et al (1983), Malarmathi et al (2009), Jatoi et al (2013) and Mohammad (2016). This could be due to depression in Chol during egg production as Chol shifts from the blood to the ovary for egg formation, which seems to be a metabolic phenomenon for meeting continued serum Chol demand to replenish losses during egg formation (Mady et al 1990).…”

Section: Discussionsupporting

confidence: 93%

“…The LSG 28 genotype was the fastest for SLG, GRBW and GRSL as compared with other genotypes. Significant effect of genotype on BW in Japanese quail is also in agreement with previous reports (Islam et al 2014; Hussain et al 2016) and SL (Grunder et al 1983; Dikmen & Ipek 2006). The significant effects of sex are in agreement with the results of Alkan et al (2010) and Kosshak et al (2014) for BW and Ojo et al (2014) for SL.…”

Section: Discussionsupporting

confidence: 91%

Section: Performance Of the Traitssupporting

confidence: 92%

“…This could be due to depression in Chol during egg production as Chol shifts from the blood to the ovary for egg formation, which seems to be a metabolic phenomenon for meeting continued serum Chol demand to replenish losses during egg formation (Mady et al 1990). Genotype differences in TG, Chol and Alb in quails have also been reported by Grunder et al (1983) and Rezvannejad (2014). In the present study, plasma TP concentrations in different quail genotypes were found to range between 5.04 to 5.89 mg/dl, which is similar to the values recorded by Malarmathi et al (2009) in the black strain of Japanese quails.…”

Section: Discussionsupporting

confidence: 73%

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Alterations in plasma constituents, growth and egg production traits due to selection in three genotypes of Japanese quail

Farahat

Mahmoud

El-Komy³

et al. 2018

J. Agric. Sci.

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The present investigation was carried out to estimate the effects of genotype and sex on growth and laying performance and assess the variations in plasma constituents in the tested genotypes and their relations with productive traits after four generations of selection. Data of growth and laying performance on 1440 females and males of Japanese quail were taken from the three quail genotypes: maternal (MG), long shank length (LSG28) and control (CG) genotypes. Genotype significantly affected all studied growth productive traits, favouring selected genotypes. The LSG28surpassed MG in total protein, albumin (Alb), globulin (Glob), triglycerides and Alb/Glob ratio and lowered both cholesterol and total lipids (TL). Sex significantly favoured females, which had higher body weight, longer shank length at 35 days of age and higher body weight gain during the period from 1 to 35 days of age. Females showed significantly higher concentrations of both Alb and TL than males. The MG exceeded LSG28in fertility and hatchability per cent. Correlations for both growth and productive traits with plasma constituents revealed inconsistent trends in either magnitude or direction. Four generations of selection resulted in substantial phenotypic improvements in most growth and productive traits, as well as plasma constituents studied in LSG28, and favoured MG in maturity, days needed to produce the first ten eggs, higher egg production per cent and heavier egg mass.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 91%

Section: Performance Of the Traitssupporting

confidence: 92%

Section: Discussionsupporting

confidence: 73%

See 2 more Smart Citations

Alterations in plasma constituents, growth and egg production traits due to selection in three genotypes of Japanese quail

Farahat

Mahmoud

El-Komy³

et al. 2018

J. Agric. Sci.

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Synthesis and parameters of new populations of meat-type chickens

Chambers

Bernon

Gavora

1984

Theoret. Appl. Genetics

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Sire and dam populations of meat-type chickens were developed at the Animal Research Centre, Ottawa to provide unselected control populations suitable for modern broiler research, estimate genetic parameters of broiler traits, and initiate selection experiments. The populations were synthesized from 16 commercial broiler parent stocks (nine sire and seven dam stocks) during two generations of crossbreeding and one generation of random mating. The estimated genetic contribution per stock to the respective population ranged from 8.3 to 16.7% for autosomal genes, from 5.5 to 17.8% for genes on Z chromosomes, and from 0 to 25.0% for genes on W chromosomes. Genetic differences among the original stocks had not been fully diffused among individuals within the populations at the time parameters were estimated. Consequently, genetic parameter estimates are probably slightly biased. Estimated heritabilities of broiler traits in these populations were generally high, 0.39 to 0.63. Hence, rapid genetic change of these traits is possible. The genetic correlation between 28 to 49 day feed efficiency and corresponding weight gain was 0.69 and between feed efficiency and abdominal fat percentage was -0.68. Increasing body weight gain, improving feed efficiency and reducing abdominal fatness of broilers by selection appears feasible.

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Blood Plasma and Production Traits in Commercial Broiler Parent Stocks

Abstract: Blood plasma and production traits were studied in nine sire-type and seven damtype commercial parent stocks of broiler chickens. Commercial source and sex werc much more important than type in explaining variation in plasma and production traits. Levels

Cited by 2 publications

References 1 publication

Alterations in plasma constituents, growth and egg production traits due to selection in three genotypes of Japanese quail

Alterations in plasma constituents, growth and egg production traits due to selection in three genotypes of Japanese quail

Synthesis and parameters of new populations of meat-type chickens

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