Survey on laying performance and egg characteristics of native hens from Isfahan breeding station

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Heydari Seyed Yavar; PIRANY NASROLLAH; Ahmadipour Behnam; AKBARI MOHAMMAD REZA

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Journal: Journal of Animal Production Year:2020 | Volume:22 | Issue:3 Page(s): 441-455

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Information Journal Paper

Title

Survey on laying performance and egg characteristics of native hens from Isfahan breeding station

Author(s)

Heydari Seyed Yavar | PIRANY NASROLLAH | Ahmadipour Behnam | AKBARI MOHAMMAD REZA | Issue Writer Certificate

Keywords

Body weightQ1

ExternalQ1

and internal egg characteristicsQ1

Isfahan native chickensQ1

Phenotype correlationsQ1

Abstract

This study was conducted to investigate the weight changes, age and weight at first laying, the outer and inner egg characteristics of breeding station of Isfahan native chickens. Three hundred-day old native chickens were used in this survey. The experiment was started from the first day to the end of the 12 weeks of egg production (32 wks. of age). The results indicated that average age and weight of the first laying hens were 152. 6 days and 2061. 46 g, respectively. The overall average of the egg weight was 45. 47 g in whole production period. The average number of eggs produced by each hen in 12 weeks of production period was 42. The range of hen production percentage in each week was 5. 83 to 61. 99 with an average of 45. 44. The regression curves of height and diameter of yolk with production weeks were in order of second; with the weight of the hen's body, the white and yolk weight, and the shell thickness were of third order and with the rest of the traits were in forth order. Correlation of age at first egg with shell weight was high (r =0. 99) and highly significant (P <0. 001), but with total egg weight, the length and weight of the egg, and the height of yolk was negative and significant (P <0. 05). The results of this experiment indicated the good production potential in some of these birds which proper breeding programs may led to improve their productivity.

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APA: Copy

Heydari, Seyed Yavar, PIRANY, NASROLLAH, Ahmadipour, Behnam, & AKBARI, MOHAMMAD REZA. (2020). Survey on laying performance and egg characteristics of native hens from Isfahan breeding station. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), 22(3 ), 441-455. SID. https://sid.ir/paper/396937/en

Vancouver: Copy

Heydari Seyed Yavar, PIRANY NASROLLAH, Ahmadipour Behnam, AKBARI MOHAMMAD REZA. Survey on laying performance and egg characteristics of native hens from Isfahan breeding station. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE)[Internet]. 2020;22(3 ):441-455. Available from: https://sid.ir/paper/396937/en

IEEE: Copy

Seyed Yavar Heydari, NASROLLAH PIRANY, Behnam Ahmadipour, and MOHAMMAD REZA AKBARI, “Survey on laying performance and egg characteristics of native hens from Isfahan breeding station,” JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), vol. 22, no. 3 , pp. 441–455, 2020, [Online]. Available: https://sid.ir/paper/396937/en

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