Abstract
The current study was conducted to evaluate the association between the body weight, carcass characteristics and the testis measurements of the three matured cocks of about one year to one and half months of age in the semi arid zone of Nigeria. Sixty matured cocks were used for the study with twenty from each of the genotype. The data collected on the carcass characteristics of the three genotypes of cocks were analyzed using SPSS Version 21 Statistical tool. Differences between treatments means were separated using Duncan’s Multiple Range Test of the same software. The correlations between the different variables were determined using Pearson correlation. The results showed a positive correlation (P< 0.05) between live weight and the internal organs. Also positive significant (P<0.01) relationship were observed between body weight and the slaughter weight (r =0.97). Significant relationship between live weight and the left testis was observed (r =0.67: P<0.01). In conclusion, testis measurement with live weight showed that positive correlation translates into positive genetic correlation among the traits which will lead to improvement in the other traits. This variation may be due to close genetic background of the indigenous cocks
Highlights
Poultry production is one of the best available domestic animals reared for the purpose of animal protein.Poultry production plays an important role in livestock industries
Carcass characteristic traits depend on several factors such as strain difference, sex and age, these factors have greater influence and the process of improving carcass traits by selection based on genetic differences in carcass characteristics may help in improvements (Pikul et al, 1987)
The objective of this work was to sought the relationship that exists among carcass characteristics of the three indigenous cocks breeds and the correlation that existed between live weight and testis morphometric
Summary
Poultry production is one of the best available domestic animals reared for the purpose of animal protein (meat or egg).Poultry production plays an important role in livestock industries It is considered as a way of livelihood and achieving a certain level of economic developments by providing income, manure and helps in keeping the environment clean by scavenging on insect, weeds and waste (Vaisanen et al, 2005). The understanding of linear body measurement characteristic and reproductive organs is very important in evaluating the breeding soundness of a matured male cocks (Ibrahim et al, 2012).The cocks reproductive organ is located in the abdominal region. It consists of asymmetric tastes with ductus difference and the phallus for erection to ejaculate sperm. The objective of this work was to sought the relationship that exists among carcass characteristics of the three indigenous cocks breeds and the correlation that existed between live weight and testis morphometric
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