Department of Animal Science, Maragheh Branch, Islamic Azad University, Maragheh, Iran
Receive Date: 11 July 2013,
Revise Date: 11 October 2013,
Accept Date: 15 October 2013
In this experiment 240 Hy-Line (W-36) laying hens from 65 to 75 weeks distributed in 5 treatments and 4 replicates (12 birds per replicate) in a completely randomized design were used. The amounts of watermelon skin meal (WSM) used to set the treatments were 0, 0.5, 1, 1.5 and 2% in 1 to 5 experimental groups. The results showed that using WSM up to 2% significantly improved the performance and egg traits of laying hens (P<0.05). The highest amounts of egg weight, egg mass and egg production percentage, the best feed conversion, the lowest feed price for production per kilogram of egg, the highest albumen quality percentage were observed by using 2% WSM. By using 2% WSM the eggshell and yolk weight significantly decreased (P<0.05). The overall results indicated that in laying hens, using watermelon skin meal up to 2% of diets, significantly improved their performance and reduced the production cost.
AOAC. (2002). Official Methods of Analysis. Vol. I. 17th Ed. Association of Official Analytical Chemists, Arlington, VA, USA. Carmen M., Donangel O. and Eggum B.O. (1985). Comparative effects of wheat bran and barleyhusks on nutrient utilization in rats. Br. J. Nutr. 54, 741-751. Card L.E. and Nesheim M.C. (1972). Poultry Production. Lea and Febiger. Philadelphia. USA. Clarm P. (1984). Influence of caecectomy and source of dietary fiber of starch on excreation of endogenous amino acids by laying hens. Br. J. Nutr. 51, 541-548. Dai N.V. and Bessei W. (2007). Potassium chloride supplementation in drinking water of laying hens as a means to maintain high productivity under high ambient temperature. Pp. 25-29 in Proc. Conf. Int. Agric. Res. Dev. University of Kassel-Witzenhausen and University of Göttingen, Germany. Farkhoy M., Sigharody F. and Niknafas F. (1997). Poultry Breeding. Coasar Publication, Iran. Najib H.and Basiouni G. (2004). Determination of the nutritional requirements of the local Saudi chickens. Sci. J. King Fasial Univ. 5, 131-144. Nobakht A. and Mehmannavaz Y. (2010). Investigation the effects of using ofThymusvulgaris,Lamiaceae menthapiperita,Oreganum valgaremedicinal plantson performance, eggquality, blood and immunity parameters of layinghens. Iranian J. Anim. Sci. 41, 129-136. Nobakht A., Shivazad M., Chamani M. and Safamehr A.R. (2008). The effects of dietary electrolytebalance on performance and eggshell quality of laying hens exposed to heat stress andthermo neutral condition in early laying period. J. New Agric. Sci. 9, 79-88. NRC. (1994). Nutrient Requirements of Poultry, 9th Rev. Ed. National Academy Press, Washington, DC., USA. Puthpongsiriporn U., Scheideler S.E., Sell J.L. and Beck M.M. (2001). Effects of vitamin E and C supplementation on performance in vitro lymphocyte proliferation, and antioxidant status of laying hens during heat stress. Poult. Sci. 80, 1190-1120. Roberts S.A., Xin H., Kerr B.J., Russel J.R. and Bregendahl K. (2007). Effects of dietary fiber and reduced crude protein on nitrogen balance and egg production in laying hens. Poult. Sci. 86, 1716-1725. SAS Institute. (2005). SAS®/STAT Software, Release 9.12. SAS Institute, Inc., Cary, NC. USA. Sayiedpiran S.A., Nobakht A. and Khodaei S. (2011). The effects of using of probiotic, organic acidand blends of some medicinal herbs on performance, egg quality, blood biochemical and immunity parameters of laying hens. Vet. J. Islamic Azad Univ. Tabriz. 5, 1111-1122. Summers J.D. (1993). Reducing nitrogen excretion of the laying hen by feeding lower crudeprotein diets. Poult.Sci. 72, 1473-1478. Zarei M., Ehsani M. and Torki M. (2011). Productive performance of laying hens fed wheat- baseddiets included olive pulp with or without a commercial enzyme product. African J. Biotechnol. 20, 4303-4312. Zargari A. (1990). Herbal Medicines. Publication of Tehran University, Iran.