Effect of adding different levels of crushed laurel leaves (Laurus nobilis) to the diet of broiler chickens on some physiological blood traits
  • Article Type: Research Article
  • Eurasian Journal of Biosciences, 2020 - Volume 14 Issue 1, pp. 449-452
  • Published Online: 08 Mar 2020
  • Open Access Full Text (PDF)


This experiment was conducted in the field of Poultry birds belonging to the Department of Animal Production, College of Agriculture, Al-Qasim Green University to investigate the effect of adding different amounts of crushed laurel leaves (Laurus nobilis) to feed broilers on some chickens’ physiological blood traits. 180 unsexed broiler chickens (ross 380 strain) one-day old were used, randomly divided into four treatments at a rate of 45 birds per treatment, and each treatment consisted of three replicates (15 birds per replicate). The experimental treatments included the first treatment (control) in which no crushed laurel leaves were added to the food, the second treatment in which crushed laurel leaves were added in an amount of (1 g / kg of feed), and the third treatment in which crushed laurel leaves in an amount of (2 g / kg of feed) and the fourth treatment in which crushed laurel leaves in an amount of (3 g / kg of feed) were added. The experiment included the concentrations of glucose albumin, globulin, total cholesterol, triglyceride, high-density lipoprotein, low-density lipoprotein, very-low-density lipoprotein, ALT enzyme, AST enzyme and uric acid, and also globulin/albumin (G / A) ratio and total protein. The results indicated that the addition of crushed laurel leaves (2-3 g / kg of feed) led to an increase in the concentration of high-density lipoproteins and globulins as well as a significant decrease in glucose, total cholesterol, triglycerides, and low-density lipoproteins. The present experiment indicated that adding laurel leaves can improve some physiological blood traits in broilers.


  • Ali MN, Hassan MS, Abd El-Ghany FA (2007) Effect of strain, type of natural antioxidant and sulfate ion on the productive, physiological and hatching performance of native laying hens. Int. J. Poult. Sci 6: 539-554. Retrieved from https://pdfs.semanticscholar.org/cc1c/c6ec9845d6b4d843ea4df620286632b40f44.pdf
  • Ali NA AL-Kaissy GA Mamdooh A, AL- Nasrawi M (2016) Effect of Addition Different Levels of Parsley Leaves Powder (Petroselinum sativum) to the Ration on Some Blood Serum Biochemical Traits of Broiler Ross 308. Journal of Natural Sciences Research 6(20): 18-21.
  • Ali NA, Fadhil RA, Imad A, AL- Nassry AS (2019) Effect of adding white tea powder (camellia Sinensis) to the ration in the qualitative traits of Japanese quail eggs (Coturnix coturnix japonica). Bioscience Research 16(1): 459-464.
  • AOAC (1980) Official methods of the analysis 13th ed. Association plasma cholesterol and triglycerol concentrations. AM. J. Clin. Nutr 70(6): 1009-1015.
  • Aqeel YA, Ali NA, Rabia JA, Alkassar AM, Jameel YJ (2018) Effect of Dietary Supplementation with Differing Levels of Moringa oleifera Leaf Meal on the Productivity and Carcass Characteristics of Broiler Chickens.Int.J.poult.Sci 17: 536- 542. https://doi.org/10.3923/ijps.2018.536.542
  • Arora A, Byrem TM, Nair MG, Strasburg GM (2000) Modulation of liposomal membrane fluidity by flavonoids and isoflavonoids. J. Arch. Biochem. Biophy 373:102-109. https://doi.org/10.1006/abbi.1999.1525
  • Duncan BD (1955) Multiple ranges and multiple f-test Biometrics 11: 1-42.
  • Fdam EMA, Nafia HH, Hussein FM (2016) Effect of Supplementation crushed Melissa officinalis and laurus nobilis leaves and artificial antioxidant to broiler diets on Productive characteristics of broiler. Anbar Journal of Veterinary Science 9(1): 31-40.
  • Franey RJ, Elias A (1968) Serum cholesterol measurement based on ethanol extraction and ferric chloride-sulfuric acid. Clin. Chem. Acta 2: 255-263.
  • Ganong WF (2005) Review of medical physiology. 16th ed., Alange Medical Book: 336-338.
  • Gardziete wska J, Pudyszak K, Majewska T, Jakubowska M, Pomianowski J (2003) Effect of plant supplement feeding on fresh and frozen storage quality of Broiler chicken meat. Animal husbandry series of electronic. J. Polish Agric. Univ 6(2).
  • Henry RJ, Sobel C, Kim J (1982) Determination of uric acid. In Fundamentals of Clinical Chemistry. N. W. Tietz, ed. W. B. Saunders Company. London.
  • Li BB, Smith B, Hossain MM (2006) Extraction of phenolics from citrus peels. Separation and Purification Technology 48(2): 182–188.
  • Makki Al Rubaee MA (2018) Effect of bay laurel (Laurus nobilis L.) leaf powder dietary supplementation on dressing percents, carcass trait, carcass cuts and some internal organs of meat type quail. Indian Journal of Science and Technology 11(37). https://doi.org/10.17485/ijst/2018/v11i37/130988
  • Musa K, Mahfuz E, Nusret G, Metin S, Musa Y, Mehmet O (2011) Bay Laurel (Laurus nobilis L.) in Japanese quails feeding 1. Performance and egg quality parameters. Journal of Animal and Veterinary Advances 10(4): 1883-1889.
  • National Research Council (NRC). (1994) Nutrient requirement of poultry then. National Academy Press. Washington. D.C.USA.
  • Reitman S, Frankel S (1957) A colorimetric method for the determination of serum glutamic oxaloacetic and glutamic pyruvic transaminases. Am. J. Clin. Path 28: 56-63.
  • SAS (2010) SAS/ STAT Users Guide for Personal Computers Release 9.1 SAS. Institute Inc. Cary and N.C USA
  • Thakare M (2004) Pharmacological screening of some medical plants as antimicrobial and feed additives. Master thesis, Virginia Polytechnic Institute, and State University, Blacksburg. USA Virginia.
  • Titilayo F, Mojisola S, Osheiza H (2018) Fermentation Conditions and Process Optimization of Citric Acid Production by Yeasts. International Journal of Biotechnology, 7(1): 51-63.


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