Natural Growth Boosters/ Promoters for Chickens 


Natural Growth Boosters/ Promoters for Chickens


The reason for slow growth in broiler might stem from many factors such as feed quality, chicken breed, health status, management, etc.


Among these factors, feed quality affects the growth of broiler chickens the most, and this has lead feed manufacturers into using feed supplements and additives for better growth and performance.

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Below are natural growth boosters/promoters that have been proven to work.




Garlic ( Allium sativum) is one of the well-researched herbs that have been proven as an effective herbal medicine. Due to its antimicrobial properties, garlic has been tested as an alternative growth promoter for broiler chickens.

Horton and Prasad (1991) reported that garlic as a feed additive, improved broiler growth, feed conversion ratio (FCR), and decreased mortality rate.

Garlic has been shown to increase the growth of important gut bacteria as probiotics. Also, Oloyede and Fasuyi have shown that garlic powder (GP), an inclusion rate of 3g/kg of broiler feed, result in higher growth performance.

Therefore, for a natural growth booster for the broiler, you can incorporate 3g/kg garlic powder in your feed. For instance, for a 25kg bag of feed, you add 75g of garlic powder.

However, they are several ways you can use garlic for chicken, or you can instruct your local feed miller on what to do for a better result.

READ ALSO: Basic Requirements for Organic Poultry Farming


Cloves are the flower buds of the clove tree, an evergreen also known as Syzygium aromaticum.

Cloves are best known as sweet and aromatic spices, but they have also been used in traditional medicine.

Also, Its medicinal properties have been extended to improve growth in livestock, especially in boosting the growth of broiler chicken. Clove at doses of 100-200mg (0.1g-0.2g)/kg seems to improve feed efficiency (David et al, 2012)

For instance, for 25kg feed, you will add 2.5-5g clove essential oil



Turmeric is also known as Curcuma longa of the ginger family, Zingiberaceae, the roof of which is used in cooking and in making Ayurvedic medicine.

It has been shown to have antimicrobial, anti-coccidiosis, and anti-inflammatory properties. It has also been shown to promote the growth performance of broiler chicken.

(Yesuf et al, 2017) concluded that turmeric at ( 1 to 2 g/kg in the total ration) for better and positive results on carcass yield lean meat ( breast meat) production which could reduce the risk of hyperlipidemia and increase consumer acceptability.

This was also confirmed by ( Kafi et al, 2017) that supplementation of turmeric ( Curcuma longa ) improves the growth performance of broilers when added at the rate of 0.75% level as feed additives in broiler ration.


Black pepper


Black pepper (Piper nigrum)- iyere in Yoruba, Uda in Hausa, and Uziza in Igbo. It is a flowering vine in the family Piperaceae, cultivated for its fruit, known as a peppercorn, which is usually dried and used as a spice and folk medicine.

It has also been shown to have growth-promoting properties in broiler chicken

The following vitamins and are found in black pepper, vitamin B complex groups such as pyridoxine, riboflavin, thiamin, and niacin, which explain why it increase digestibility in broiler chicken.

To add black pepper to your broiler diet, you need to add Ikg of black pepper to every 100 kg of feed. This is a percent of black pepper to their feed

READ ALSO: How to Diagnose and Cure Paralysis in Chickens 

. Bitter Kola

Bitter Kola is packed with vital nutrients like iron, calcium, fiber, antioxidants and more

Bitter kola (Garcinia kola) is another potential growth promoter in livestock, especially, in broiler chickens.

It has been shown to have antimicrobial properties and a natural growth promoter that you can take advantage of by incorporating it into your feed formula for optimal growth.

Therefore, if you are adding bitter kola to your broiler feed, you are least sure that you have a good growth promoter and an antimicrobial agent in their feed.

To utilize Bitter Kola as a broiler growth promoter, sun-dry, and grind to a powder. Add 25g per 1Kg of feed



Ginger is believed to improve digestion as well ass kill parasites

Ginger (Zingiber officinale) is another natural growth promoter used as an alternative to artificial antibiotics. Ginger may act as a pro-nutrient because of the vast active ingredients it has been reported to contain, such ingredients include carbohydrate, protein, lipid, minerals, and vitamins.

A protein-digesting enzyme (Zingibain) found in ginger is believed to improve digestion as well as kill parasites and their eggs.

Herawati (2010) reported that Hubbard strain broilers fed 2% supplement red ginger in the diet had significantly higher final body weight than those on the control diet.


Cayenne Pepper

Cayenne pepper has antibiotic properties

Cayenne pepper (Capsicum annuum ) is one of the phytobiotics with a high content of pharmacologically active ingredients.

It was reported that adding cayenne pepper to the feed diet of chickens will increase and boost appetite and feed consumption or metabolism.

Cayenne pepper is also known to kill gut worms and is effective for the treatment of coccidiosis. (Puvaca et al, 2015 ) observed that cayenne pepper powder at an inclusion rate of 0.5g/100g of broiler feed works great in boosting the bodyweight of broilers.

It has also shown the potency to replace broad-spectrum antibiotics known as Oxytetracycline (OTC), which is used in the treatment and prevention of diseases as well as improving digestibility in broiler chickens.


Thyme leaves

Thyme ( Thyme Vulgaris )is not only used as a spice but also useful as herbal medicine.

Thymol and carvacrol are the major components of herbal oil, which form 20 -25% thyme extract, and showed considerable antimicrobial properties with no negative effects such as residue in animal meat and bacterial resistance.

It was demonstrated that thymol and carvacrol concentrations from 100 to 1000ppm displayed a positive effect on broiler production (Hosseini et al, 2013).

(Youssef et al, 2016) concluded that thyme oil as 1.0g/kg diet may be used as a potential growth enhancer for broiler in the hot region during 1 – 28 days

Therefore, for every 25kg bag of feed production, you add 25g of thyme oil.


David Sola-Oriol, Miquel Nofrarias, Ana Barroeta, J.Gasa Edgar, Garcia Manzamilla. Role of in-feed Clove supplementation on growth performance, intestinal microbiology, and morphology in broiler chicken Research.

Dwi sunarti Prayogi Sunu, Luthfi djahari Mahfudz, Vitus Dwi Yunianto. The probiotic activity of garlic (Allium sativum) extract on Lactobacillus acidophilus


Herawati : Veterinary Medical School University of Brawijaya Malang 65145 Indonesia 2010. The Effect of Red Ginger as Phytobiotics on Bodyweight Gain; Feed conversion and internal Organs condition of Broiler. International Journal of Poultry Science 9/10/:963-967

Kafi, MNUddin, M.j.Uddin, Mmxx Khan, and M.E Haque. Effect of dietary supplementation of Tumeric (Curcuma longa), Ginger (Zingiber officinale) and their combination as Feed Additives on Feed Intake, Growth Performance and Economics of a broiler. International Journal of Poultry Science Volume: 16 Issue: 7 pages 100: 257- 265: 2117

K.Y Yesuf, B.T, Mersso, T.E Bekele. Effects of different levels of turmeric, fenugreek, and black Cumin on Carcass Characteristics of broiler chicken. Livestock Sci 8, 11-17, 2017

T.A, Oloyede, and A.O, Fasuyi. Garlic (Allium sativum) Power as an Additive in Broilers (Finisher Phase ) Part 2: Growth Performance, Hypocholesterolemic Effect, and Economic Implication. Journal of Experimental Agriculture International, 1-14, 2017

Youssef A. Attia, Ahmed A. Bakhashwain, and Nehal K Berth. Thyme oil (Thyme vulgaris ) is a natural growth promoter for broiler chicken reared in a hot climate.

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