Association Between Body Weight and Some Egg Production Traits in a Strain of Commercial Layer

Ayorinde, K. L.; Toye, A. A.

doi:10.51791/njap.v15i.1220

Cited by 7 publications

(2 citation statements)

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“…The association between body weight and egg weight was similar to the findings of [15] who observed a fairly high association between egg production and weight gain in the Black and Pearl Guinea fowl. This means that point of lay does not terminate live weight increases in the Guinea fowl [15].…”

Section: Discussionsupporting

confidence: 88%

Genetic and Phenotypic Correlations between Characteristics in Local Guinea Fowl in Ghana

Duodu¹

2023

AJAAR

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This study aimed at estimating genetic and phenotypic correlations among traits in local Guinea fowl in Ghana. Animal farm of Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Mampong-Ashanti campus was where the study took place, from 2015 to 2018. Data for the experiment was obtained from keets made up of 300 males and 300 females. Parents of the keets consisted of 110 dams and 22 sires. Arithmetic method and Pearson’s product moment correlation were used for the estimates. In male Guinea fowl, the values of genetic correlations among growth characteristics ranged from -0.63 to 0.93. Between growth and other characteristics, estimates of genetic correlation ranged from 0.29 to 0.97, -0.67 to 0.43, -0.62 and 0.94 respectively. Values of phenotypic correlations among growth parameters were between -0.32 and 0.49. Range of figures of phenotypic correlations recorded between growth characteristics and survival, docility, and dressing percentage were between -0.28 and 0.28, -0.46 and 0.18, and -0.41 and 0.36 correspondently. In female Guinea fowl on the other hand, range of genetic correlations among growth traits was between -0.80 and 0.95. Range of figures of genetic correlation between growth traits and survival, docility, dressing percentage and reproductive characteristics of were from -0.47 to 0.9, -0.52 to 0.58, -0.58 to 0.82 and -0.59 to 0.9 respectively. The values of phenotypic correlations among growth characteristics fell between -0.39 and 0.46. Phenotypic correlations recorded between growth traits and survival, docility, dressing percentage and reproductive characteristics were from -0.26 to 0.47, -0.47 to 0.19, -0.35 to0.47 and -0.33 to 0.47 respectively. Values of genetic correlations higher than one (1) among some traits in male Guinea fowl were recorded. To conclude, discoveries of this study are in general agreement of what pertains to Guinea fowl and other farm livestock species.

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Section: Discussionsupporting

confidence: 88%

Genetic and Phenotypic Correlations between Characteristics in Local Guinea Fowl in Ghana

Duodu¹

2023

AJAAR

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“…The EWF presently is higher than 51.45 and 51.35, g for crossbreds of Dominant black (DB) and Fulani ecotype (FE) chickens (DBxFE and FExDB) reported by Sola-Ojo and Ayorinde (2011); and 48.84g from Potchefstroom (Tadesse et al, 2013); but lower than 58.78 and 60.27, g from IB and BOVAN BROWN hens (Tadesse, 2013). Our findings contradict Render et al, 1984;and Ayorinde et al, 1988; that low body-weight were superior to high body-weight birds in egg production. Our results support Ayorinde and Oke (1995) who reported insignificant differences on egg production traits between heavy and low body weight birds; and Udeh (2007) who observed that rearing birds on weight basis may have no significant advantage, because high and light body weight birds reared in same environment recorded similar results in hen-day egg production within breed.…”

Section: Effect Of Interaction Between Genotype and 20-week Pullet Weightcontrasting

confidence: 96%

Genotypic and 20-week body weight effects on full sexual maturity traits of parent stock layers raised in commercial deep-litter system

Oluwatosin

Olawumi

2020

Archiva Zootechnica

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The influence of genotype (GTY) and 20-week body weight (PW20) on full-sexual maturity (FSM) productivity and hatching traits were investigated on two parent-stock layers in Ibadan, Nigeria. Data were obtained on twenty-two batches of BOVAN NERA (BN) and ISA BROWN layers (IB) each, between 2009-2019, from a breeding company in Ibadan. These were grouped based on strain and 20-week body weight. Experimental design was randomized block design (RBD). Data were subjected to general linear model (GLM) factorial and Tukey’s HSD, α=0.05, procedures of Statistical Analytical Systems® (SAS, 2002) software. BN had better pullet weight (P<0.05, ds=0.88), while IB possessed higher hen-day egg production, persistency of egg production and pullet day-old chicks hatched (P<0.05, ds=-0.86 to -1.44) at FSM. The 20-week low weight birds required intensive skillful management for compensatory weight-gain to FSM, while egg weight was higher in 20-week high weight class at full maturity (P<0.05, ds=0.06 to -1.19). Genotype by 20-week pullet-weight interaction revealed better genetics of BN genotype on compensatory growth between 20th week and FSM, and on PFM (P<0.05, ds=0.24 to 1.62). The better HDF and P80 (P<0.05, ds= -1.73, -1.61) of medium weight IB genotype signals its genetic ability for higher percent day-old chicks production (P>0.05, ds= -0.72 to -1.11).

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Reproduction and production performance of improved chickens, their production constraints, and opportunities under Ethiopian conditions

Mesele

2023

Trop Anim Health Prod

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Association Between Body Weight and Some Egg Production Traits in a Strain of Commercial Layer

Cited by 7 publications

References 0 publications

Genetic and Phenotypic Correlations between Characteristics in Local Guinea Fowl in Ghana

Genetic and Phenotypic Correlations between Characteristics in Local Guinea Fowl in Ghana

Genotypic and 20-week body weight effects on full sexual maturity traits of parent stock layers raised in commercial deep-litter system

Reproduction and production performance of improved chickens, their production constraints, and opportunities under Ethiopian conditions

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