Effect of Intraperitoneal Injection of Bisphenol-A on Egg Production and Quality Traits in Japanese Quail

M., Abdel-Rahim; Hanafy, A.; Abdel-Ghany, A.; Khalil, H.

doi:10.21608/japfp.2017.7418

Effect of Intraperitoneal Injection of Bisphenol-A on Egg Production and Quality Traits in Japanese Quail

Document Type : Original Article

Authors

¹ Animal Production Department, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt

² Animal Production Department, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egyp

10.21608/japfp.2017.7418

Abstract

This experiment was carried out during winter season 2015, at the Poultry Farm, Department of Animal
Production, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt. A total of 40 immature female Japanese
quail exposed to different levels of Bisphenol-A (BPA) was examined. Three-week-old, quails were individually
weighted and divided into four groups 10 females' birds in each. The BPA was dissolved in corn oil and
intraperitoneally injected weekly in the abdominal cavity of quail for three consecutive weeks (3rd through 5th wks
old). The experimental groups were treated by a solution containing (0, 1, 5 and 10 mg BPA/kg BW). During the
experimental period, eggs were collected from each group to estimate egg production and quality traits. At 14 weeks
of age, all hens were weighed and then slaughtered in order to collect blood samples to determine serum
concentrations of estradiol-17β hormone. The result showed that exposure of female quail before/at puberty to BPA
delayed initiation of egg production. While the age at first egg in control female was at 47 days of age, consequently,
the BPA treated females were slower to reach 50% of their final laying rate. The laying rate of eggs in the control not
significantly higher than the rate of egg production in all the BPA treatment groups, with the exception of the 10 (mg
BPA /kg BW group). BPA treated females showed drastically reduced egg quality compared to controls even with a
minimal dose of 1 (mg BPA /kg BW group). Shell thickness and internal quality units were significantly linearly
decreased, but egg shape index was significantly linearly increased with increased BPA dose compared with control
group. The lowest ovarian follicle number and oviduct length were detected in 10 (mg BPA/kg BW group), while the
highest values were obtained in 5 (mg BPA/kg BW group). All tested BPA concentrations significantly influenced
the egg production and egg quality in female quail indicating a lowest observed effect concentration of 10 (mg
BPA/kg BW). Significant increases of female's body weight and reproductive organ after BPA administration were
recorded, as females produced pre-ovulatory follicles at all tested BPA levels it is presumed that BPA did not affect
oogenesis but affect the process of ovulation, the highest values of body weight and reproductive organs of females in
the 5 (mg BPA/kg BW group), estradiol concentration was increased in BPA-treated groups. It could be concluded
that the BPA treatment decreased body weight and delayed puberty and initiation of egg production in female quail.
The effect of BPA exposure is proportional to the dose and varies depending on the time of administration.

Keywords