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Research Article

Academia Journal of Scientific Research 3(3): 050-054, March 2015
DOI: 10.15413/ajar.2015.0103
ISSN 2315-7712
2015 Academia Publishing




Effect of L-carnitine on performance and carcass quality of broiler chickens


Accepted 11th March, 2015


Seyed Mozafar Mehdizadeh Taklimi1*, Khosrow Ghazvinian2 and Mohammad Reza Ahmadi Kasgari3

1Department of Animal Physiology and Nutrition, Animal Science Research Institute, P. O. Box: 31585- 1483, Karaj, IR-Iran.
2Department of Animal Science, College of Agriculture, Islamic Azad University, Ghaemshah-IR-Iran.
3Department of Animal Science, College of Agriculture, Islamic Azad University, Ghaemshahr-IR-Iran.

*Corresponding author. Email: seyedmozafar@yahoo.com. Tel: +98 261-4430010/4. Fax: +98 261-4464230/4413258.

A factorial (24) experiment was conducted under completely randomized design to study the effects of two forms of L- Carnitine (A-Liquid and B-powder forms) with four different levels (0.00, 400, 600 and 800 mg/kg feed) for 42 days. 400 eighty day old Ross broiler chicks mixed (male and female) were procured and divided in to eight treatments and three replicates (20 chicks in each). As the results were revealed, significant higher body weight gain (787.21g) were observed during the 1st phase growth periods (1-21day) in groups that consumed diets containing L-carnitine 600 mg/kg feed (p<0.05). Though, during the total experimental periods (1-42day), the highest body weight gain (2226.91 g) were owed to groups that had diets with L-carnitine at 800 mg/kg feed (p<0.05). Interactions between levels and types of L-carnitine did not have significant effect on body weight gain all through. During growth periods (1-21 day), birds showed significant effect on dietary L-carnitine. Significantly, higher feed intake (1155.73 g) was refer to diets supplemented with L-carnitine at 400 mg/kg in feeds (p<0.05). Interactions between levels and types of L-carnitine had significant effects on feed intake at growing phase (1-21 day). Where as, liquid forms of L-carnitine at 800 mg/kg feed significantly increased feed intake (p<0.05). Optimal feed conversion ratio were observed during the growing phase (1-21 day) as well as through out the experimental periods (1-42 days) in groups who had diets that include L-carnitine at 800 mg/kg feed (p<0.05). During the 1st phase of experimental period, interactions between levels and types of L-carnitine was observed in FCR (p<0.05). Mean crude protein, fat content in carcass did not show any significant effect by inclusions of L-carnitine in diets. However, L-carnitine in powder form decreased carcass ash content at 6.04% (p<0.05). Interactions between levels and types of L-carnitine have no significant effect on carcass qualities (protein levels, fat and ash contents). Calcium and phosphorus levels in blood were not affected significantly by inclusions of different levels of dietary L-carnitine. Inclusions of both types of L-carnitine in experimental diets have no significant on tibia calcium and phosphorus content. Interactions were observed in-between forms and levels of L-carnitine on calcium and phosphorus in tibia, in which L-carnitine at 800 mg/kg diets increased calcium levels in tibia (6.29%) as compared to other experimental groups (p<0.05).

Key words: Broiler chicks, carcass quality, performance and L- carnitine.


This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Cite this article as:
Taklimi SMM, Ghazvinian K, Kasgari MRA (2015). Effect of L-carnitine on performance and carcass quality of broiler chickens. Acad. J. Sci. Res. 3(3): 050-054.

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