Heterosis for bodyweight in native by exotic inbred chicken crosses

Udeh, I.; Omeje, S. I.

doi:10.4314/tjas.v4i1.49799

Cited by 5 publications

(4 citation statements)

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“…Therefore, improvement in body weight and morphometric traits will lead to a corresponding improvement in the carcass yield of broiler chicken. The result of this study aligns with the reports of other authors (Udeh et al, 2011;Nosike et al, 2017;Sam and Okon, 2022). It has been reported that morphometric traits play a lead role in the prediction of live body weight and carcass yields in broiler chickens as observed by Adenaike et al (2022).…”

Section: Correlation Between Morphometric Traits and Carcass Yield Of...supporting

confidence: 92%

Estimation of Carcass Yield from Morphometric Traits of ROSS 308 Strain of Broiler Chicken Raised in Humid Zone of Nigeria

Ebong,

Sam,

Essien

2023

AKSUJA

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Carcass yield is an important trait in broiler production which determines the profitability of the enterprise. This research was done to establish the correlation between morphometric traits and carcass yield as well as estimate carcass yield from morphometric traits of ROSS 308 broiler chicken. A total of 50 mixed - sex 8 weeks broiler was used for this study. Morphometric traits studied were wing length (WL), keel length (KL), thigh length (TL), body girth (BG), and body height (BH) whereas carcass yield traits were dress weight, thigh weight, and breast weight being customers most preferred parts. Data collected were subjected to correlation and regression analysis to establish the relationship between morphometric traits and carcass yield as well as the estimation of carcass yield. Results of the relationship between morphometric traits and carcass yield indicated that all the morphometric traits were significantly (p<0.05) and positively correlated with all the carcass yield measured, with the highest correlation being between wing length and breast weight (r= 0.932) while the lowest was the correlation between dressed weight and keel length (r= 0.201) while the simple linear regression indicated that carcass traits could be predicted accurately with all the morphometric traits. However, multiple regression analysis indicated a higher accuracy (using R2 value) when more than one variable was included in the equation. It was concluded that the high and positive correlation between the studied morphometric traits and carcass yield in the ROSS 308 strain of broiler indicates that these morphometric traits are good indicators of carcass traits. It was also revealed that the inclusion of more than one variable gave a better prediction of the carcass traits.

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Section: Correlation Between Morphometric Traits and Carcass Yield Of...supporting

confidence: 92%

Estimation of Carcass Yield from Morphometric Traits of ROSS 308 Strain of Broiler Chicken Raised in Humid Zone of Nigeria

Ebong,

Sam,

Essien

2023

AKSUJA

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“…The increase in egg weight has been suggested to be a response to a higher intake of linoleic acid or the presence of fat in the diet per se [23] as well as increased plasma estradiol [24]. The egg weights so obtained were within the observed range and values (35.80 to 42.84 g) reported for local eggs by Udeh and Omeje [25], Asuquo et al [26], Olori and Sonaiya [27,28], and Oluyemi et al [29]. The physical characteristics of the egg play an important role in the process of embryo development and successful hatching.…”

Section: Egg Quality Traitssupporting

confidence: 66%

The performance and egg quality traits of Nigerian local hens fed varying dietary levels of palm kernel cake with added palm oil

Afolabi

Akinsoyinu

Omojola

et al. 2012

Journal of Applied Poultry Research

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Humans and livestock, especially poultry, compete for cereals and other grains as food. The cost of cereals and other conventional feed ingredients is increasing in Nigeria because of their diverse use and the high cost of importation resulting from the high exchange rate. This has been reducing the profit margin of poultry farmers or making the business less attractive in Nigeria. Palm kernel cake (PKC), the by-product of or residue from oil extraction from the en- SUMMARYA total of 120 local hens at the point of lay were randomly assigned, 2 per cage, with 10 replicates per diet in a completely randomized design, to 6 palm kernel cake (PKC)-based layer diets that contained 20% CP and 2,700 kcal of ME/kg of feed. The PKC was included at levels of 10, 20, 30, 40, and 50% in diets 2, 3, 4, 5, and 6, respectively. Diet 1 without PKC served as the control. To make the diets isocaloric, 0.5, 1.48, 3.35, 5.22, 7.11, and 8.98% palm oil was added to diets 1, 2, 3, 4, 5, and 6, respectively. Feed and water were offered ad libitum for 12 wk. The hen-day production (53.8 to 63.3%) peaked at dietary PKC levels of 20 to 40%. Feed conversion ratio was also the lowest in hens fed the 20 to 40% PKC-based diets, but it was poorer than the control diet for those fed 50% PKC. The least hen-day production was obtained for birds on the 50% PKC-based diet. The albumen height (3.16 to 3.73 mm) was highest for eggs laid by hens fed the control and 10% PKC diets. The egg yolk indexes obtained for hens fed 0 to 10% dietary PKC (0.2) were significantly higher than those obtained for hens fed 20 to 50% PKC (0.13 to 0.15). The yolk color score increased significantly (P < 0.05) across the diets (from 1.0 to 5.9) as the level of palm oil increased. The egg weight, egg circumference, eggshell thickness, egg shape index, and weights of the albumen and yolk were similar across diets. Feeding up to 40% PKC with added palm oil had no adverse effect on the performance of Nigerian local hens and the quality of their eggs.

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“…All crossbred genotypes were superior in early (0 to 13 weeks) body weight to FE. Udeh and Omeje [86] reported heterosis of body weight in native and exotic inbred chicken crosses with native X exotic being higher than exotic X native, and native backcrosses being higher than exotic backcrosses. The authors concluded that body weight heterosis resulted from complete dominance in native backcrosses while 2-3 locus parental epistasis involving complementary genes were responsible for heterosis observed in exotic backcrosses.…”

Section: Crossbreeding Of Nigerian Indigenous Chicken Ecotypes and Genotypes With Exotic Breedsmentioning

confidence: 99%

Utilization and Conservation of Landrace Chickens of Nigeria: Physical and Performance Characteristics, Issues and Concerns

Ogbu¹

2021

Landraces - Traditional Variety and Natural Breed

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The Nigerian indigenous chickens (NICs) are a critical component of the global animal genetic resources. They are distributed in rural areas, kept by the majority of the rural poor. They constitute different strains, or ecotypes local to tribes, regions, or ecological zones and are valued for their disease resistance, adaptation, and yield of valuable products and income on marginal inputs making them a low risk species. They are hence a unique and vital genetic resource and gene pool for present and long-term genetic improvement and human need for food and sustenance. The NIC is however; threatened by extinction owing to neglect, negative selection, breed substitution, and genetic introgression. There is need to draw research and policy attention to the conservation of NICs in accord with the global effort for the conservation of indigenous chickens which is probably the most neglected among farm animal species. The present review therefore, focuses on the physical and performance characteristics, genetic diversity and improvement, utilization and conservation of NIC genetic resources.

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Heterosis for bodyweight in native by exotic inbred chicken crosses

Cited by 5 publications

References 0 publications

Estimation of Carcass Yield from Morphometric Traits of ROSS 308 Strain of Broiler Chicken Raised in Humid Zone of Nigeria

Estimation of Carcass Yield from Morphometric Traits of ROSS 308 Strain of Broiler Chicken Raised in Humid Zone of Nigeria

The performance and egg quality traits of Nigerian local hens fed varying dietary levels of palm kernel cake with added palm oil

Utilization and Conservation of Landrace Chickens of Nigeria: Physical and Performance Characteristics, Issues and Concerns

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