Deljoy Sarayan, J. (2011) Determination of Egg Qualitative Traits in Khazak Native Chicken. Masters thesis, University of Zabol.
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Abstract
The aim of this study was to identified Khazak native chicken characteristics (native chicken Sistan region) and determine the quality of chicken eggs in the hens. Traits in the study were evaluated, including those of external and internal quality attributes that are associated with quality of chicken eggs had. For estimate genetic parameters of the model multivariate and determining factors of the single variety to ASReml software was used. Egg production, fertility, hatchability, age of sexual maturity and molting average, respectively 115.34, 56.88, 74.83, 5.54 and 2.10 respectively. For external quality chicken eggs: egg weight, egg width, egg length, shell thickness, shell color, shell weight, shell ratio and egg index, 43.04, 3.9, 5.08, 0.57, 1.52, 4.41, 10.18 and 0.77 respectively, was calculated and the internal quality traits: Albumin height, albumin weight, albumin ratio, Haugh unit, yolk weight, yolk proportion and yolk color were 5.94, 23.41, 53.73, 81.36, 14.20, 32.88 and 8.72, respectively. Heritability of traits for egg weight, shell weight, shell index, shell color, egg width, egg length, yolk weight, albumen weight, albumen height, yolk color, yolk ratio, haugh unit and albumin ratio were 0.50, 0.54, 0.30, 0.15. 0.49, 0.36, 0.32, 0.61, 0.42, 0.19, 0.66, 0.46 and 0.65, respectively. The highest correlation between phenotypic traits and egg internal genetic egg observed for width and egg weight between, 0.91 and 0.96, respectively. Among Internal egg characteristics, the highest phenotypic and genetic correlation observed between haugh unit and albumin height, 0.97 and 0.99, respectively.
| Item Type: | Thesis (Masters) |
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| Subjects: | S Agriculture > SF Animal culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 13 Apr 2016 06:16 |
| Last Modified: | 13 Apr 2016 06:16 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/288 |
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