Crossbreeding Effect on Some Biochemical Parameters of Blood and Egg Production Traits in Iraqi Hens during the Laying Period

Abstract

A research was carried out to evaluate the egg production traits of 100 main and reciprocal crossbred Isa Brown and normal local Iraqi chickens. Egg production data were collected on 800 eggs for 100 days and a subject ofrandomized two-way analysis of variance complete blockdesign. Results indicated that Isa Brown x Iraqi hens recorded highest significant (P<0.05) Serum melatonin hormone (205.6±9.973 pg/ml) serum Calcium (8.91±0.254 mg/dl), serum Phosphor (4.62±0.186 mg/dl), serum Magnesium (3.94±0.216 mg/dl), weight at first egg (40.72±0.927 g.), body weight at first egg (1459±26.7g), Age maturity (153.15±0.607 day) and total egg number to 100 days (68.68±2.047eggs) while Iraqi hens recorded highest significant (P<0.05) Serum melatonin hormone (102.99±9.341 pg/ml) serum Calcium (7.64±0.333 mg/dl), serum Phosphor (5.78±0.673 mg/dl), serum Magnesium (3.12±0.11 mg/dl), weight at first egg (32.78±0.412 g.), body weight at first egg (1367±19.3 g), Age at first egg (141.48±2.207 day) and total egg number to 100 days (50.27±1.575 eggs).