You take plants that have more flavanoinds and antioxidant activity to improve egg quality.

Ramio ( Bohemeria nivea)

Morera (Morus alba)

cooked pumpkin ( Cucurbita mochata)

Please consider having a look at phyllantus amarus. I did a research on it last year (though not published yet). the outcome was very encouraging. it enhanced egg number, LH and FSH profile in Old layer. I am sure it will help you

You may want to consider the following tropical plants known to support and enhance egg production: Nasturtium - natural wormer and laying stimulant; Oregano - natural antibiotic, boost immune system;  Parsley - Laying stimulant, high in vitamins; Garlic - respiratory and circulatory health aid and also boost immune system; Mint - digestive and respiratory health aid. However, since they consist of many compounds, each with separate, varying and distinct pharmacological activities, it is important to consider the synergistic or possible adverse effects that may be associated with combine use of these plants..

Best of luck in your research endeavor.

Dear Ogbuewu 

Please, read in the following link I hope will be useful for you.

http://dergipark.gov.tr/download/article-file/131939

Good Luck

Hopefully it will help you that my published reviews on some valuable plants as link give herein.

http://scialert.net/fulltext/?doi=ijp.2017.351.360&org=11

http://scialert.net/fulltext/?doi=ijp.2017.361.369&org=11

https://www.cambridge.org/core/journals/world-s-poultry-science-journal/article/quercetin-nutritional-and-beneficial-effects-in-poultry/363771813E9D03634C636F18EC7490B4

Good Luck to you and find the given links herein.

https://www.cambridge.org/core/journals/world-s-poultry-science-journal/article/quercetin-nutritional-and-beneficial-effects-in-poultry/363771813E9D03634C636F18EC7490B4

http://scialert.net/fulltext/?doi=ijp.2017.361.369&org=11

http://scialert.net/fulltext/?doi=ijp.2017.351.360&org=11

Thank you Mr. Saeed. Can you please add me as co-author in our paper entitled "Study on production and marketing of beef in Quetta district Pakistan" on research gate because I am not seeing this paper. Thanks

You can take plants that have more flavonoids and antioxidant activity to improve egg quality. Some examples like neem leaf meal (NLM) and neem kernel meal (NKC), velvet bean (Mucuna spp), cassava peel meal (CPM), cassava root meal (CRM), mango seed kernel (MSK), yam peel meal (YPM), jack bean seeds, Napoleona imperialis seeds (NIS), maize milling waste (MMW), breadfruit hull (BFH), Alchornea cordifolia seeds (ACS), moringa seed and leaf meals, tiger nut, plantain peels, and coconut shell ash among others.

Thanks

Plants like Moringa leaf, luffa aegyptiaca leaf, Phyllantus amarus, Daniellia oliveri, Prosopis africana....are rich in several bioactive chemicals which will aid production in animals.

Thanks