Use of factor scores for predicting body weight from linear body measurements in three South African indigenous chicken breeds

Malomane, Dorcus Kholofelo; Norris, David O.; Banga, C.B.; Ng’ambi, J. W.

doi:10.1007/s11250-013-0492-2

Cited by 11 publications

(3 citation statements)

References 6 publications

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“…The measurement of carcass traits in poultry breeding is both expensive and difficult, and can only be conducted after death. In contrast, BrW is an important live body measurement that is closely related to body weight and breast muscle production [20]. The current results revealed very high genetic and phenotypic correlation coefficients between BrW and EW, HEW, and BW42, respectively.…”

Section: Discussionmentioning

confidence: 64%

Genome-wide association study reveals novel loci associated with body size and carcass yields in Pekin ducks

et al. 2019

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BackgroundPekin duck products have become popular in Asia over recent decades and account for an increasing market share. However, the genetic mechanisms affecting carcass growth in Pekin ducks remain unknown. This study aimed to identify quantitative trait loci affecting body size and carcass yields in Pekin ducks.ResultsWe measured 18 carcass traits in 639 Pekin ducks and performed genotyping using genotyping-by-sequencing (GBS). Loci-based association analysis detected 37 significant loci for the 17 traits. Thirty-seven identified candidate genes were involved in many biological processes. One single nucleotide polymorphism (SNP) (Chr1_140105435 A > T) located in the intron of the ATPase phospholipid transporting 11A gene (ATP11A) attained genome-wide significance associated with five weight traits. Eight SNPs were significantly associated with three body size traits, including the candidate gene plexin domain containing 2 (PLXDC2) associated with breast width and tensin 3 (TNS3) associated with fossil bone length. Only two SNPs were significantly associated with foot weight and four SNPs were significantly associated with heart weight. In the gene-based analysis, three genes (LOC101791418, TUBGCP3 (encoding tubulin gamma complex-associated protein 3), and ATP11A) were associated with four traits (42-day body weight, eviscerated weight, half-eviscerated weight, and leg muscle weight percentage). However, no loci were significantly associated with leg muscle weight in this study.ConclusionsThe novel results of this study improve our understanding of the genetic mechanisms regulating body growth in ducks and thus provide a genetic basis for breeding programs aimed at maximizing the economic potential of Pekin ducks.Electronic supplementary materialThe online version of this article (10.1186/s12864-018-5379-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 64%

Genome-wide association study reveals novel loci associated with body size and carcass yields in Pekin ducks

et al. 2019

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“…The male chickens in our study had longer shank lengths and girths, consistent with the observations of Charuta et al [ 24 ], indicating that sex had an effect on shank development with respect to area, perimeter, and length. Intrinsic differences in body measurements between sexes directly affect other parameters of slaughter performance and can represent an effective predictive model for chicken production [ 25 , 26 , 27 ]. The results of our study implied that male chickens have better growth performance, greater size, and greater weight.…”

Section: Resultsmentioning

confidence: 99%

Effects of Sex on Growth Performance, Carcass Traits, Blood Biochemical Parameters, and Meat Quality of XueShan Chickens

Yuan,

Jiang,

Wang

et al. 2024

Animals

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The demand for high-quality chilled chicken has continued to increase in China. Chickens are sexually dimorphic, and to better understand the specific differences in chicken production based on sex, we examined how sex affects growth performance, carcass traits, and meat quality of yellow-feathered chickens. Male and female Xueshan chickens were used as the experimental model. Although males exhibited better growth performance, including body weight (BW), body slope, keel, shank length, and shank girth (p < 0.05), as well as carcass traits, such as dressed weight, leg muscle, and lean meat, females had higher carcass and breast muscle yields (p < 0.05). Males had higher follicle density and yellowness (b*) of the skin and better skin than females (p < 0.05). Among blood biochemical parameters, the serum content of corticosterone (CORT) was higher in males, while those of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), total antioxidant capacity (T-AOC), and catalase (CAT) were lower in males than in females (p < 0.05). The pH levels, shear force, and moisture content quality were better in male breast meat, while the intramuscular fat content (IMF) was lower in males than in females (p < 0.05). The redness (a*) and moisture content were higher in male leg meat, while the pH, water-loss rate (WLR), lightness (L*), and IMF were lower (p < 0.05). The muscle fiber diameter and cross-sectional area were also higher in males (p < 0.05). Consumers felt that soup of male chicken was better than female (p < 0.05), while mouthfeel and tenderness acceptance of breast meat were different between the sexes. These results indicate that female chickens can be marketed as a whole carcass, while males are more suitable for processed carcass products. This study provides significant insights into the production and processing methodologies of yellow-feathered chickens.

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“…Thus, SL, SC, and BL could be considered as selection criteria in a breeding program aimed to improve BW in Ethiopian indigenous chickens. Since positive correlations of traits suggest that a single gene influences the traits (i.e., pleiotropy), the relationship between BW and different morphometric measurements could be useful as a selection criterion (Yakubu, 2009;Malomane et al, 2014). According to Sowande and Sobola (2008), thus, an improvement in any one of the body measurements would result in a corresponding improvement in BW.…”

Section: Resultsmentioning

confidence: 99%

Predicting Body Weight of Ethiopian Indigenous Chicken Populations from Morphometric Measurements

Negash¹

2021

Turkish JAF Sci.Tech.

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The purpose of this study was to estimate the relationship between body weight (BW) and morphometric measurements of Ethiopian indigenous chicken populations and to develop prediction equations used to estimate BW from body measurements. A total of 621 chickens comprising 134 males and 487 females reared under smallholder management conditions were used for the study. Body weight and morphometric measurements including body length (BL), chest circumference (CC), shank length (SL), and shank circumference (SC) were taken using a hanging scale and a textile measuring tape, respectively. The relationship between BW and morphometric measurements was determined using Pearson’s correlation coefficients (r) and stepwise multiple regression analyses. Descriptive statistics indicated that male birds were heavier than female birds. Correlation results revealed that body weight was significantly and strongly correlated with SL (r = 0.76) in both sexes, and moderately correlated with SC (r = 0.69), BL (r = 0.67), and CC (r = 0.52) in male birds, BL (r=0.68) and SC (r = 0.59) in female birds. Compared to other measurements, SL best predicted BW in both male and female birds, with coefficients of determination (R2) = 0.58. Combining SL with other body measurements (BL, CC, and SC) generally improved the predictive power of the equation. Thus, multiple regression equations that included a combination of the four linear body measurements are more suitable for predicting BW of Ethiopian indigenous chicken populations.

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Use of factor scores for predicting body weight from linear body measurements in three South African indigenous chicken breeds

Cited by 11 publications

References 6 publications

Genome-wide association study reveals novel loci associated with body size and carcass yields in Pekin ducks

Genome-wide association study reveals novel loci associated with body size and carcass yields in Pekin ducks

Effects of Sex on Growth Performance, Carcass Traits, Blood Biochemical Parameters, and Meat Quality of XueShan Chickens

Predicting Body Weight of Ethiopian Indigenous Chicken Populations from Morphometric Measurements

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