Abstract
The effect of natural feed additive on productive performance of broiler chickens
Highlights
In the poultry industry, antibiotics are used to prevent pathogens and poultry diseases in order to improve meat and egg production
The best result we achieved in experimental group with the application of 1.00% Musculaton®
The results of our study are in accordance with Osman et al (2010) who noted that broiler chickens fed with marjoram at the level 1 g kg-1 at 28 and 42 days of age had a higher average live weight those received the lower level of 0.5 g kg-1
Summary
Antibiotics are used to prevent pathogens and poultry diseases in order to improve meat and egg production. Addition of natural ingredients in poultry nutrition can have additional benefits for the health performance of broiler chickens (Brugalli, 2003; Hui et al, 2010). The chemical composition of marjoram (Origanum majorana L.) extract as previously mentioned showed that it contains a variety of secondary metabolites and mainly carvacrol (Jamroz et al, 2003). These bioactive ingredients of the extract are reasons for improvement of gut health and nutrients absorption and utilization which enhance the health of broilers and increase their performance (Ali, 2014)
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