FACULTY OF AGRICULTURE

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Author: search.filters.author.Ewuola, K.M.

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    Analysis Of Sexual Dimorphism In Morphometric Variables Of Cane Rat
    (2018) Osaiyuwu, O.H.; Akinyemi, M.O.; Akindele, O.D.; Ewuola, K.M.
    The sex effect and interrelationship between body weight and six linear body measurements o fforty-five (15 bucks and 30 does) grasscutters aged between 12 and 24 months was assessedusing path analysis. Body weighty and linear body measurements: hind leg length, rump height, paunch girth, face width, mouth width, and total body length were measured for the male and female grass cutter. Results showed that there were significant differences (p<0.05) between the male and the female cane rats for all the parameters measured indicating sexual dimorphism in the cane rat All parameters assessed had highly significant (p<0.0001) and very strong positive correlation coefficients in both sexes. The path analysis indicated that in males, hindleg length (2.86;p<0.0001) had the highest direct effect on body weight, while rump height (-1.45; p<0.0001), had a negative direct effect In the female group, all the parameters evaluated had a nonsignificant, positive direct effect The hind leg length was observed to have the highest (0.29; p<0.0001) path coefficient while the mouth width (0.02; p<0.0001) had the least path coefficient It was concluded that sex had an effect on the interrelationship between body weight and linear body measurements in grasscutter.
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    Association Between Igf- 1 Gene Polymorphisms And Body Weight In Nigeria Locally Adapted Turkeys
    (The Genetics Society of Nigeria, 2018) Oyewola, K. A.; Osaiyuwu, O.H.; Fijabi, O.E.; Shobanke, I.A.; Nwokorie, G.I.; Ewuola, K.M.
    The insulin-like growth factor 1 (IGF-1) gene polymorphism plays important roles in development, growth and reproduction. Genetic intervention for the improvement o f Nigeria locally adapted turkeys based on growth rate and higher mature weight is important. This study was aimed at investigating the association between IGF-1 gene polymorphism and body weights in Nigeria locally adapted turkeys using PCR-RFLP method. Fifty poults were randomly selected for DNA analysis at 10 weeks. Zymo Miniprep kit was used for genomic DNA extraction from blood samples and 529bp fragment o f intron 2 o f IGF-1 gene was amplified. The genetic structure o f the population was analysed using POPGENE 32 software. Association o f the genotypes with body weight was evaluated using the General linear model of SAS 9.2. The enzyme digested products revealed A and B alleles with frequencies o f 0.61 and 0.39 respectively. Two genotypes A A (0.38) and AB (0.62) were detected. Chi-square test (0.001830) for Hardy-Weinberg equilibrium showed that the population sampled was not in equilibrium for the gene investigated. Also, significant association was not observed between IGF-1 polymorphs and body weight at 4, 8 and 12 weeks o f age in Nigeria locally adapted turkeys.