Genistein supplementation to the quail: Effects on egg production and egg yolk genistein, daidzein, and lipid peroxidation levels

Akdemir, Fatih; Şahin, Kazım

doi:10.3382/ps.2009-00004

Cited by 39 publications

(22 citation statements)

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“…One of the principal findings in the present study was that dietary flaxseed and/or fenugreek seed supplementation significantly improved eggshell weight and eggshell thickness at the end of the egg‐laying cycle. Similarly, dietary phytoestrogens improved eggshell quality traits in Hyline brown laying hens (Gu et al, ; Ni et al, ) and quails (Akdemir & Sahin, ; Sahin et al, ) during the late laying period. The improvements in eggshell quality characteristics in the present study were probably related to increases in serum calcium concentration associated with phytoestrogens (Gu et al, ; Sahin et al, ).…”

Section: Discussionmentioning

confidence: 97%

“…These results are in agreement with Omri et al () who observed that inclusion of 0.05% fenugreek seeds increased egg weight. Several investigations illustrated that dietary phytoestrogens improved egg weight and egg quality characteristics in chickens (Saitoh, Sato, Harada, & Takita, ), ducks (Zhao et al, ) and Japanese quails (Akdemir & Sahin, ). As shown in Table , yolk colour score was significantly elevated by the dietary supplementation of flaxseeds and/or fenugreek seeds.…”

Section: Discussionmentioning

confidence: 99%

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The impact of phytoestrogen source supplementation on reproductive performance, plasma profile, yolk fatty acids and antioxidative status in aged laying hens

Saleh

Ahmed²,

Ebeid

2019

Reprod Domestic Animals

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Contents The objectives of this study were to investigate the effects of flaxseeds and/or fenugreek seeds as a source of phytoestrogens in laying feed on productive performance, egg quality, yolk fatty acids, plasma profile and antioxidative status in aged laying hens. A total of 120 Bovans Brown hens at 65 weeks of age were housed individually in laying cages in an open‐sided building under a 16‐hr light: 8‐hr dark lighting schedule. Hens were randomly divided into four experimental treatments (n = 30 each): (a) control (basal diet without any supplementation); (b) 1 g/kg of flaxseeds; (c) 1 g/kg of fenugreek seeds; and (d) combination of 1 g/kg flaxseeds and 1 g/kg fenugreek seeds from 65 to 71 weeks of age. Hen‐day egg production and egg mass were significantly increased by dietary supplementation of flaxseeds and/or fenugreek seeds, while feed intake was not affected; thus, feed conversion ratio was improved (p < 0.05). Weights of egg, albumen, yolk and shell were increased by the dietary treatments. Shell thickness and yolk colour were improved by supplementation of flaxseeds and/or fenugreek seeds. Yolk crude protein was not significantly affected by treatments; however, crude fat and calcium contents in yolk were increased and egg yolk cholesterol content was decreased. Interestingly, dietary supplementation of flaxseeds, fenugreek seeds and their combination had a significant positive effect on plasma luteinizing hormone, follicle‐stimulating hormone, oestradiol‐17β and triglycerides. Inclusion of flaxseeds and/or fenugreek seeds in the diets enhanced the serum glutathione peroxidase and superoxide dismutase activities and reduced the malondialdehyde and total cholesterol concentrations in plasma. Dietary supplementation of flaxseeds and/or fenugreek seeds increased α‐linolenic and linoleic acids in egg yolk. It could be concluded that inclusion of mixed sources of phytoestrogens in diets improved laying performance, egg quality, the antioxidative status, hormonal profile and steroidogenesis in aged laying hens.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

The impact of phytoestrogen source supplementation on reproductive performance, plasma profile, yolk fatty acids and antioxidative status in aged laying hens

Saleh

Ahmed²,

Ebeid

2019

Reprod Domestic Animals

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“…There was a positive effect on laying intensity in the experimental group fed 3000 mg AI per kg feed in comparison with the other experimental groups (1000 and 2000 mg AI) and the control group. Akdemir and Sahin (2009) reported that the use of 800 mg genistein per 1 kg feed increased the egg production of the quails and improved egg weight.…”

Section: Discussionmentioning

confidence: 99%

Transfer of daidzein and genistein from feed into the egg yolk of hens

Gjorgovska¹,

Kiril²

2013

J. Anim. Feed Sci.

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“…There is a limited number of studies concerning the effect of E 2 on Japanese quail egg production. A few studies were conducted to measure the effect of E 2 benzoate injection on egg-laying performance, whereas the majority of the studies mainly focused on the effect of phytoestrogen (daidzein and genistein)-containing diet on the egg-laying performance of the Japanese quail (Akdemir and Sahin, 2009), female chicken (Liu and Zhang, 2008) and female ducks (Zhao et al, 2005;Ni et al, 2007). In Japanese quail, the effect of external administration of E 2 on performance requires more study.…”

Section: Introductionmentioning

confidence: 99%

Effect of estradiol-17β on follicle-stimulating hormone secretion and egg-laying performance of Japanese quail

Çiftçi

2012

Animal

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The aim of this study was to measure the effect of estradiol-17b (E 2 ) injection on follicle-stimulating hormone (FSH) secretion and egg-laying performance of Japanese quail. Female Japanese quail were housed in cages and fed ad libitum. After a 7-day adaptation period, the birds were randomly assigned to three groups, that is, one control group and two test groups. The birds were weighed, before every injection. The control group was subcutaneously injected with 0.2 ml sesame oil-ethanol mixture, whereas test groups were injected, twice in a week, with 0.2 ml sesame oil-ethanol mixture containing 0.1 or 0.2 mg E 2 along the study. One day after the first injection, egg number, egg weight, eggshell strength and food conception were daily recorded. On the last day of the experiment, the birds were injected and 3 h later seven birds from each group were randomly selected for bleeding. Blood samples (2 ml/bird) were collected from the jugular vein for the measurements of serum concentrations of E 2 , FSH, calcium (Ca) and phosphorus (P). E 2 injection did not cause any significant changes in serum FSH concentrations, daily egg laid/ bird, food conception/bird, serum concentrations of the Ca and the P. Egg weight was significantly increased in the 0.1 mg E 2 -injected group as compared with the control and 0.2 mg E 2 -injected groups. Eggshell strength in the 0.2 mg E 2 -injected group was significantly high as compared with the control, whereas the difference between the 0.1 mg E 2 -and 0.2 mg E 2 -injected groups was not statistically important. These results show that serum FSH concentration was not increased even when slightly suppressed by subcutaneous injection of 0.1 or 0.2 mg E 2 . Different doses of E 2 have different functions. The increase in BWs in the 0.1 mg E 2 -injected group was a result of the dose effect, which probably increased growth hormone secretion from the pituitary or IGF-1 synthesis from the liver or both. The dose, 0.2 mg E 2 , was ineffective in increasing the BW, but it significantly increased eggshell strength probably via the increase in Ca and P utilizations.Keywords: egg, follicle, estradiol, quail ImplicationsThe Japanese quail (Coturnix japonica) belongs to the order Galliformes and the family Phasianidae. They have been used for meat and egg production since 1900. After World War II, the Japanese quail has become an important experimental animal, similar to the mouse and rat, for scientific research in universities. Recently, they have been accepted as a model animal for studying the relationship between the endocrine status and the reproductive behaviors. Not enough data are available about the relationship between serum estradiol-17b (E 2 ) concentration and egg-laying performance of the Japanese quail. A few studies were conducted to measure the effect of intramuscular E 2 benzoate injection on egglaying performance, whereas the majority of other studies mainly focused on the effect of phytoestrogen (daidzein and genistein)-containing diet on the egg-laying performance of the...

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Genistein supplementation to the quail: Effects on egg production and egg yolk genistein, daidzein, and lipid peroxidation levels

Cited by 39 publications

References 44 publications

The impact of phytoestrogen source supplementation on reproductive performance, plasma profile, yolk fatty acids and antioxidative status in aged laying hens

The impact of phytoestrogen source supplementation on reproductive performance, plasma profile, yolk fatty acids and antioxidative status in aged laying hens

Transfer of daidzein and genistein from feed into the egg yolk of hens

Effect of estradiol-17β on follicle-stimulating hormone secretion and egg-laying performance of Japanese quail

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