Correlations, Sex and Line Effect on Lipid Profiles of Improved Nigerian Indigenous Chickens
Jessie Ezekiel Udoh *
Department of Animal Science, Faculty of Agriculture, University of Uyo, Uyo, Postal Code: 520 003, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Aims: The study evaluated correlations and effect of sex and line on lipid profiles of Improved Nigerian Indigenous Chickens (INICs). Population of 100 DOCs FUNAAB Alpha comprising of broiler and layer lines were reared at the poultry unit of the Research and Teaching Farm, Department of Animal Science, University of Uyo. Ten birds per sex of 20 in each breed were randomly selected for blood sample collection to analyze for lipid profiles.
Parameters Were: Total cholesterol (T.Chol) and Triglyceride (TG). Plasma lipoprotein particles classed based on size, composition and apolipo-protein content: High density lipoproteins (HDL), Low density lipoproteins (LDL) and Very low density lipoproteins (VLDL). Design is 2 x 2 factorial CRD. Weekly Body weight (Bw) was taken. All data collected were analyzed with SAS ver. 9.2 and means were compared using LSD. Phenotypic correlation was computed with the same software package through its formula. The result showed that sex significantly (p<0.05) influenced some of the lipid profiles of INICs at 8 weeks studied. Females of INICs had significantly (p<0.05) higher means for T.Chol,TG and VLDL than males counterparts measured. HDL and LDL were significantly (p>0.05) similar in both sexes measured. Line significantly influenced some lipid profiles of INICs studied at week 8. Broiler line of INICs had significantly higher values for T.Chol, TG, and VLDL than layer line studied. Sex and line interactively affected lipid profiles of the INICs studied at week 8. Females of broiler line recorded higher values significantly higher than the layer line measured. Phenotypic correlation coefficients between Bw and lipid profiles showed negative correlations which ranges -0.16 to -0.50 but within lipid profiles were positively correlated (0.62 to 0.99). It concludes that Females of broilers of INICs had higher means than males of layer line so females of broilers should be used for lipid profile test to ascertain health status of organs of birds.
Keywords: Correlations, Improved Nigerian Indigenous Chickens, lipid profiles, line by sex lipoproteins