Use of Factor Scores for Predicting Body Weight from Some Morphometric Measurements of Two Fish Species in Nigeria

Yakubu, Abdulmojeed; Okunsebor, S. A.; Kigbu, A. A.; Sotolu, Akeem O.; Imgbian, Terzungwe D.

doi:10.5539/jas.v4n8p60

Cited by 4 publications

(6 citation statements)

References 7 publications

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“…Besides that, Kokoszynski et al (2017) recorded shank length of different commercial broiler line was from 10.0 to 10.4 cm which is very close to the present findings. However, the studies by Yakubu et al (2009); Udeh and Ogbu (2011) observed that body length of commercial Arbor Acre broiler was 36.74 cm and Ross broiler was 37.12 cm at 8 weeks of age respectively, the values were slightly lower than the present study. This variation of morphometric parameters might be due to age, weight, and different types of commercial strain.…”

Section: Discussioncontrasting

confidence: 82%

Body conformation, morphometry and meat yield characteristics of different genotypes of chicken

Sajib,

Obidullah,

Dutta

et al. 2023

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The aim of this study was to evaluate body conformation, morphometry and meat yield characteristics of broiler, Sonali, deshi and Fayomi chicken available in local market. Experiment was carried out at the poultry science laboratory of Jhenidah government veterinary college (JGVC), Jhenidah for a period of one month from February 2022 to March 2022. A total n u mb e r of 38 chicken (20 females and 18 males) were collected from different local market viz. broiler (10), Sonali (9), deshi (8) and Fayomi (11). The healthy birds were selected based on the availability and market demand. This study revealed that shank length, chest circumferences and digestive tract length were found highest in broiler. On the other hand, body length was recorded highest in Fayoumi and lowest in Sonali chicken. However, body conformation indices of male chicken showed higher value than their female counterparts. The findings indicated that broiler chicken had the highest body mass index (BMI), followed by Fayomi, Sonali, and deshi chicken. Similarly, broiler had the highest and Sonali had the lowest massiveness and compactness indices, whereas reverse feature was found for shape index. Sonali had the highest and broiler had the lowest shape index. Meat yield characteristics of male chicken were found higher than the female chicken among the genotypes. On the other hand, percentage of breast meat weight was found higher in female than male birds of all genotypes. However, both sexes of broiler had the highest and Sonali had the lowest percentage of dressed weight, breast meat and total meat weight. The study revealed that broiler chicken showed better meat yield performance when compared to deshi, Fayomi and Sonali chicken as meat bird available in local market of Bangladesh which provides an important message for consumer, producer and researcher.

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Section: Discussioncontrasting

confidence: 82%

Body conformation, morphometry and meat yield characteristics of different genotypes of chicken

Sajib,

Obidullah,

Dutta

et al. 2023

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“…The results of the present study revealed that feathering rate traits measured at 7 and 10 days of age can be used successfully as predictors for BW at later ages in Japanese quail. Yakubu et al (2012) reported that multiple regression analysis could be used to deduce the complex relationships among BW and some morphometric measurements. Therefore, typically BW is regressed on morphometric measurements to determine a weight prediction equation.…”

Section: Discussionmentioning

confidence: 99%

“…Yakubu et al . (2012) reported that multiple regression analysis could be used to deduce the complex relationships among BW and some morphometric measurements. Therefore, typically BW is regressed on morphometric measurements to determine a weight prediction equation.…”

Section: Discussionmentioning

confidence: 99%

Feathering rate impact on growth and slaughter traits of Japanese quail

et al. 2018

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A total of 1180 1-day-old Japanese quail (Coturnix japonica) chicks were used to investigate the effect of feathering rates on growth and slaughter traits. Feathering rates were classified based on the results of stepwise regression using numbers and lengths of both primaries and secondaries and tail length at 7 and 10 days of age as predictors. At 7 and 10 days old, number of primary feathers had phenotypically positive low correlations (rps) with body weight (BW), whereas number of secondaries had positive medium rps with BW at different ages. Lengths of primary, secondary and tail feathers had highly positive rps with BW traits at different ages. Results of stepwise multiple regressions indicated that BW at 14, 21 and 28 days of age can be predicted using lengths of secondary and tail feathers at 10 days old, number of secondaries at 7 days old and length of secondaries at 7 days old, respectively. Body weight at 35 days of age can be predicted using number of primaries, lengths of secondaries and tail at 10 days of age and number of secondaries at 7 days of age. Higher BWs were obtained in the fast-feathering class from 21 up to 35 days of age than in other groups, whereas the slow-feathering class had the lowest BW. Significant class differences were found for carcass weight, feather weight and dressing% favouring the fast- over the slow-feathering class. Therefore, early feathering rates improved BW at later ages and slaughter traits in Japanese quail.

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“…Momoh and Kershima (2008) developed both linear and multiple regression as predictors of BW in Nigerian local chickens, and found out that in both sexes the multiple regression equations when compared with the simple linear regression equations, multiple regression technique was better in predicting BW from linear body measurements than simple linear regression technique. Multiple regression analysis has been used to interpret the complex relationship among BW and some linear body measurements (Yakubu et al, 2012). Ukwu et al (2014) performed a statistical modeling of BW and linear body measurements in Nigerian indigenous chicken, the resultant predictive equations showed that there were significant relationships between BW and linear body measurements.…”

Section: Resultsmentioning

confidence: 99%

Relationships between body weight and some linear morphometric traits in Nigerian Nsukka ecotype local hens

Ikeh¹,

Okwesili²

2021

Agro-Sci.

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Body weight (BW) and linear body measurements of 120 Nigerian Nsukka ecotype local hens in terms of body length (BL), chest girth (CG), thigh circumference (TC), thigh length (TL), and shank length (SL) were taken and subjected to Pearson correlation analysis to obtain the relationship between these growth traits. Multiple Linear Stepwise Regression procedure was used to find the best linear combination of the linear body measurements that can best predict BW. The findings showed that linear body measurement traits of Nigerian heavy ecotype local hens were strongly (p < 0.01) and positively correlated (0.5 < r) except thigh length which recorded a moderate value (0.3 < r > 0.5). The regression equations of linear body measurement traits with BW were positive with coefficient of determination ranging from 60.5-74.6%. The stepwise analyses showed shank length as best single measurement with R2 = 0.605, while inclusion of our five predictors in an equation resulted in R2 = 0.746. Thus, the following equation was generated: BW = – 1485.70 + 82.06 SL + 58.34 BL + 38.70 TC + 8.39 CG + 3.85 TL. This showed that they accounted for 74.6% of the variations in the BW of Nigerian heavy ecotype local hens. The prediction equations generated from linear body measurement traits are positive and strong, therefore can accurately be employed to predict the relative BW of Nigerian heavy ecotype local hens during selection programs as well as in the market with the use of measuring tape.

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Use of Factor Scores for Predicting Body Weight from Some Morphometric Measurements of Two Fish Species in Nigeria

Cited by 4 publications

References 7 publications

Body conformation, morphometry and meat yield characteristics of different genotypes of chicken

Body conformation, morphometry and meat yield characteristics of different genotypes of chicken

Feathering rate impact on growth and slaughter traits of Japanese quail

Relationships between body weight and some linear morphometric traits in Nigerian Nsukka ecotype local hens

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