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Asian Journal of Animal Sciences
  Year: 2011 | Volume: 5 | Issue: 4 | Page No.: 268-276
DOI: 10.3923/ajas.2011.268.276
 
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Predicting Semen Traits of Local and Exotic Cocks using Linear Body Measurements

I. Udeh, S.O.C. Ugwu and N.L. Ogagifo

Abstract:
The objective of this study was to predict semen traits of local and exotic cocks using linear body measurements. To achieve this objective, 24 local and 24 exotic cocks aged 30 weeks were used. The cocks in each genetic group were divided into three replicates and housed in deep litter pens where they were fed ad libitum broiler finisher ration and water. The exotic cocks were significantly (p<0.05) superior to the local types in body weight, beak length, comb length and wing length. The local cocks produced significantly (p<0.05) more semen than the exotic cocks. The relationship between bodyweight and semen traits were not significant (p>0.05) in the two genetic groups. Significant (p<0.05) and positive correlations were observed between beak length and sperm concentration (r = 0.67), sperm motility (r = 0.70), comb length and sperm concentration (r = 0.60) and shank length and sperm motility (r = 0.59) in the exotic cocks. A positive and significant (p<0.05) correlation between wing length and percent live sperm (r = 0.59) was obtained in the local cocks. Beak length was a good predictor of sperm concentration (R2 = 0.45) and sperm motility (R2 = 0.49) in the exotic cocks. In the local cocks, shank length and wing length were good predictors of live sperm with R2 values of 0.52 and 0.35, respectively. The results of the multiple regression analysis indicate that the body measurements best predicted sperm concentration, sperm motility and semen volume in the exotic cocks and live sperm and abnormal sperm in the local cocks. It was concluded that lengths of beak, comb, shank and wing could be used to predict some semen traits of cocks.
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How to cite this article:

I. Udeh, S.O.C. Ugwu and N.L. Ogagifo, 2011. Predicting Semen Traits of Local and Exotic Cocks using Linear Body Measurements. Asian Journal of Animal Sciences, 5: 268-276.

DOI: 10.3923/ajas.2011.268.276

URL: https://scialert.net/abstract/?doi=ajas.2011.268.276

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