Effects of massive ovulation on oxidation state and function of the ovaries in laying hens

Yu CHANG; Jinghai FENG; Minhong ZHANG; Liwen JIANG; Lili ZHAI; Xiaolan YANG

Makale detayları

Effects of massive ovulation on oxidation state and function of the ovaries in laying hens

Yazarlar:

Yu CHANG | Jinghai FENG | Minhong ZHANG | Liwen JIANG | Lili ZHAI | Xiaolan YANG

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 2017 Vol.41 Issue 2, pp.161-166

Belge Tipi:

Makale

Yayın Tarihi:

4/2017

Belge Dili:

İngilizce

Document ID (Org No.):

2000765004

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128

Özet:

 

Modern laying hens show fast reduction in egg production rate after 60 weeks of age, which is associated with the decline in
ovarian function. The aim of this study was to examine the influence of massive ovulation on the oxidation state and ovarian function
in hens. In total, 48 Jing Hong hens aged 17 weeks were randomly divided into high ovulation (HO) and low ovulation (LO) groups.
The LO hens were exposed to 6 h of light per day (6 L:18 D) up to 32 weeks to delay the initiation of egg production and then were
switched to 16 L:8 D. The HO hens were reared at 16 L:8 D from 19 weeks. The treatment effects were analyzed by the independent
samples t-test using SAS 9.0 software (SAS Institute, Cary, NC, USA). At 36 weeks, there were no significant differences in body weight
(P > 0.05) between the two groups and the egg production rate of both groups reached 98%; however, the cumulative egg number in the
HO group was much higher than that in the LO group (71.3 versus 18.5, respectively; P < 0.001). The following parameters decreased
in the HO hens compared with the LO hens: the number of small yellow follicles (SYFs, P < 0.001) and large white follicles (LWFs, P <
0.01), mRNA expression of luteinizing hormone receptor (P < 0.001), and follicle-stimulating hormone receptor (P < 0.001), while the
atretic rates of SYFs and LWFs increased (P < 0.001 and P < 0.01, respectively). In addition, compared with the LO group, the HO hens
had reduced activity of superoxide dismutase (plasma: P < 0.01; liver: P < 0.001; ovary: P < 0.001) and glutathione peroxidase (plasma:
P < 0.01; liver: P < 0.01; ovary: P < 0.01), while the levels of methane dicarboxylic aldehyde (plasma: P < 0.01; liver: P < 0.001; ovary: P <
0.001) and mRNA expression of mitochondrial transcription factor A (P < 0.001) in granulosa cells were higher. These results indicated
that massive ovulation aggravated oxidative stress and had adverse effects on ovarian function in laying hens.

Makale detayları

Effects of massive ovulation on oxidation state and function of the ovaries in laying hens

Yazarlar: Yu CHANG | Jinghai FENG | Minhong ZHANG | Liwen JIANG | Lili ZHAI | Xiaolan YANG

Yayıncı: TUBITAK

Dergi: Turkish Journal of Veterinary and Animal Sciences 2017 Vol.41 Issue 2, pp.161-166

Belge Tipi: Makale

Yayın Tarihi: 4/2017

Belge Dili: İngilizce

Document ID (Org No.): 2000765004

Sıklık: İki Aylık

eISSN: 1303-6181

pISSN: 1300-0128

Sayı

Yazarlar:

Yu CHANG | Jinghai FENG | Minhong ZHANG | Liwen JIANG | Lili ZHAI | Xiaolan YANG

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Veterinary and Animal Sciences 2017 Vol.41 Issue 2, pp.161-166

Belge Tipi:

Makale

Yayın Tarihi:

4/2017

Belge Dili:

İngilizce

Document ID (Org No.):

2000765004

Sıklık:

İki Aylık

eISSN:

1303-6181

pISSN:

1300-0128