Phenotypic correlations between egg weight and some egg quality traits in three varieties of Japanese quail (<i>Coturnix coturnix japonica</i>)

Abstract

in the White and with Haugh unit (-0.209)

Evaluation of egg quality characteristics of two strains of local turkey (Meleagris gallopavo) in Zaria, Kaduna State

“…The yolk index and Haugh unit of this class of avian species studied were high and not significant irrespective of the strain which corroborates the report of Adeogun and Amole (2004) that the higher the Haugh unit and yolk index the more desirable is the interior quality of the eggs. The significant positive correlations reported between most of the egg quality traits in this study agrees with the report of Chimezie et al (2017) and Ojedapo (2013) that reported significant positive correlations between egg quality traits in quails though very higher levels of correlation were reported in turkey eggs. The correlation between the egg weight and shell weight were low and moderate (r = 0.51 and r = 0.33) at ð<0.05, 0.01 in the two strains which corroborates the earlier findings (Choi et al, 1983;Oblakova, 2006;Hristakieva et al, 2017b) that provided evidence that the eggshell weight was positively influenced by the weight of the whole egg.…”

“…Also, the correlations were also negligible in Haugh unit and albumen -yolk ratio between all the internal traits and agrees with the reports of Chimezie et al (2017). The findings of Chimezie et al (2017) on Japanese quail varieties of plumage colours (black, brown and white) obtain significant correlations in most external traits which agrees with this present result. However, Chimezie et al (2017) obtained no significant correlations in shell weight.…”

“…The findings of Chimezie et al (2017) on Japanese quail varieties of plumage colours (black, brown and white) obtain significant correlations in most external traits which agrees with this present result. However, Chimezie et al (2017) obtained no significant correlations in shell weight. The positive correlations among the internal and external characteristics therefore suggest that improvement in one lead to a positive improvement in the other which will lead to better quality of the eggs.…”

“…This is important for determination of eggshell strength in breeder eggs. The nonsignificant correlation observed in the Haugh unit against the other internal egg characteristics of turkey eggs corroborate the findings of Chimezie et al (2017) that reported in their findings a non-significant influenced by plumage colour on varieties of Japanese quail eggs. Also, the correlations were also negligible in Haugh unit and albumen -yolk ratio between all the internal traits and agrees with the reports of Chimezie et al (2017).…”

“…The nonsignificant correlation observed in the Haugh unit against the other internal egg characteristics of turkey eggs corroborate the findings of Chimezie et al (2017) that reported in their findings a non-significant influenced by plumage colour on varieties of Japanese quail eggs. Also, the correlations were also negligible in Haugh unit and albumen -yolk ratio between all the internal traits and agrees with the reports of Chimezie et al (2017). The findings of Chimezie et al (2017) on Japanese quail varieties of plumage colours (black, brown and white) obtain significant correlations in most external traits which agrees with this present result.…”