Influence of plumage colour on body weight and body parameters of noiler chicken and their crosses.
| dc.contributor.author | AKINSEMOLU, Francis Ademola | |
| dc.date.accessioned | 2025-09-26T15:22:04Z | |
| dc.date.available | 2025-09-26T15:22:04Z | |
| dc.date.issued | 2021 | |
| dc.description | xx, 131p. | |
| dc.description.abstract | ABSTRACT The study assessed the growth performance, combining abilities and nonlinear growth models of three plumage colour varieties (PCV) of Noiler chicken (black, brown and barred) and their crosses. This was with a view to study the influence of plumage colour on body weight and body parameters of Noiler chicken and their crosses. A total of four hundred and eighty (480) birds were used for this study; two hundred and forty (240) day-old chicks, comprising of eighty each from black, brown and barred strains were used for the parent line and 240 day-old chicks comprising of sixty day-old chicks each obtained from eggs collected from diallel cross of (Black [Bl] and Brown [Br]) plumage colour varieties of Noiler chicken were also used for the crosses. Four genetic groups (Bl × Bl, Br × Br, Bl × Br and Br × Bl) were generated from the crosses. The birds were brooded and raised on deep litter and battery cage for 16 weeks in labelled pens in a semi-open house. Data were collected on Body Weight (BW), Breast Girth (BG), Body Length (BL), Wing Length (WL), Shank Length (SL) and Feed Intake (FI) to estimate Feed Efficiency (FE) and Average Daily Weight Gain (ADWG). Data were analysed using the Generalized Linear Model (GLM) procedure of SAS. Means were separated using the Duncan Multiple Range Test. Plant Breeding Tools (PBT) version 2.0. was used to derive both the General Combining Ability (GCA) and Specific Combining Ability (SCA) coefficients using diallel analysis mating design, Griffings method 1. The Gompertz, Logistic, and Bertalanffy growth models were fitted to the body weight records of birds from the plumage colour varieties and their crosses using NLIN procedure of SAS®. The results showed that there was significant difference in the body weight of the crosses. At 16 weeks of age, BrnxBlk had the highest mean value of 2453.7g for body weight followed by a mean value of 2066.46g in BlkxBlk, 1986.74g in BlkxBrn and 1939.44g in BrnxBrn. Sex-influenced differences were observed in all the traits measured, with superior values recorded for cocks. Male black PCV had the highest body weight of 2608.03g. Male brown PCV had body weight of 2551.47g while male barred PCV had the least body weight of 2515.84g. Female barred PCV had the highest body weight of 2058.20g. Female black PCV had body weight of 1991.53g while female brown PCV had the least body weight of 1929.57g. BrnxBlk had the highest body weight for male (2656.24g) and female (2251.14g). BlkxBlk male had body weight of 2196.67g and 1936.35g in female. BlkxBrn male had body weight of 2195.14g and 1778.34g in female. BrnxBrn had the least value for male (2174.50g) and female (1704.39g). At maturity, GCA for body weight in male Noiler was +5.54 for black and -5.54 for brown. GCA for body weight in female Noiler was +57.97 for black and -57.97 for brown. SCA for body weight in male Noiler chicken was 120.06 for BlkxBrn and -230.55 for BrnxBlk. SCA for body weight in female Noiler chicken was 97.21 for BlkxBrn and -236.40 for BrnxBlk. The lowest values of mean square error were obtained from the Gompertz model in both male and female Noilers. Gompertz had the least overall residual values. Bertalanffy had the highest model residual effect with Logistic model in between. The study concluded that for the male, the black plumage colour variety had the highest body weight at maturity while for the female, barred plumage colour variety had the highest body weight among the parents. Female brown plumage colour variety was the lightest which could birth further research on selection for laying. BrnxBlk had the best performance among the crosses. GCA values depict that plumage colour can be used for selection in females. SCA highlights BrnxBlk as the best combination. Based on AIC, Gompertz model was the best fit non-linear growth model for male and female Noiler chicken and their crosses. | |
| dc.identifier.citation | Akinsemolu, F.A. (2023) Influence of plumage colour on body weight and body parameters of noiler chicken and their crosses. Obafemi Awolowo University. | |
| dc.identifier.other | ror.org/04snhqa82 | |
| dc.identifier.uri | https://ir.oauife.edu.ng/handle/123456789/7029 | |
| dc.language.iso | en | |
| dc.publisher | Department of Animal science, Faculty of Agriculture. Obafemi Awolowo University. | |
| dc.title | Influence of plumage colour on body weight and body parameters of noiler chicken and their crosses. | |
| dc.type | Animation |