Journal of Animal Production, Print ISSN: 2008-6776., Online ISSN: 2382-994X

Eeffect of dietary inclusion of olive leaf powder on performance, small intestine morphology and nutrient digestibility in broiler chickens

Document Type : Research Paper

Authors

ahmad ali sabetan shiraze 1
Ahmad Hassanabadi
mohamad javad agah 2
hasan nasiri moghadam 3

1 PhD student Animal Science ( poultry nutrition ) International unit Ferdowsi University of Mashhad

2 Assistant Professor of Education and Agriculture and Natural Resources Research Center of Fars province

3 Professor Ferdowsi University of Mashhad , specialty : Poultry Nutrition

https://doi.org/10.22059/jap.2017.62053
Abstract
The effects of different dietary levels of olive leaf powder (OLP) as a natural antioxidant on growth performance, carcass traits, some blood parameters, small intestinal morphology and feed digestibility in broiler using a total of 300 one-day-old Cobb500 broilers were studied in a completely randomized design with 5 treatments, 3 replicates and 20 chicks for each replicate, up to 42d. The experimental diets included: corn-soybean meal basal diet (negative control), basal diet supplemented with 250 mg/kg of alpha-Tocopheryl acetate (positive control) and three basal diets containing 2, 2.5 and 3 percent OLP. The results showed that during total experimental period (1-42d), weight gain was decreased (P<0.05) in OLP received groups in comparison with positive control. Feed intake during 1-42d period was decreased (P<0.05) in group which was treated by 3 percent OLP in comparison with positive control group. In starter period, feed conversion ratio was increased (P<0.05) in all groups treated by OLP in comparison with negative and positive controls. Dietary inclusion of different levels of OLP increased (P<0.05) length of villi, crypt depth and villus surface in comparison with the negative or positive controls. A significant decrease (P<0.05) was observed in serum concentrations of the triglycerides, cholesterol and low-density lipoproteins in OLP treated groups in comparison with negative or positive controls. Based on the results, dietary inclusion of OLP up to 2 percent in the broiler diets is recommendable, because it reduces blood lipids and also improves intestinal morphology.

Keywords

blood lipids
broiler
feed conversion ratio
Intestine villi
Olive leaf
weight gain
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Journal of Animal Production, Print ISSN: 2008-6776., Online ISSN: 2382-994X
Volume 19, Issue 2
Summer 2017
Pages 371-387

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