The Effects of Dietary Valine on Performance, SerumAntibody Titre and Bone Mineralization in Broiler Chicks

Document Type: Research Article


1 Department of Animal Science, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran

2 Department of Animal and Veterinary Science, University of Idaho, Moscow, Idaho 83844, USA


The present study was carried out to examine the effect of supplemental dietary valine in the starter diet of broilers (0-15 d of age) on performance, antibodyresponse to Newcastle disease virus vaccination and bone mineralization. The experiment was conducted using 300 Ross 308 male broilers. One-day-old chicks were randomly allotted to 3 groups; each group consisted of 5 replicate pens with 20 birds per pen. Chickens were fed one of three dietary treatments with varying concentrations of valine; the first diet was adequate in valine (0% valine), the second and third diets had an excess in valine (0.08% and 0.16% synthetic valine in diet) because valine was added in place of inert filler. The results showed that supplemental dietary valine did not alter either feed intake, body weight gain or feed conversion ratio. Hemagglutination Inhibitiontitre was significantly increased when valine was added to the diet (P<0.05). The supplemental dietary valine had a significant effect on the calcium concentration in bone (P<0.05), but there was no significant effect on the phosphorus concentration in bone.


AOAC. (1995). Official Methods of Analysis. 16th Ed. Association of Official Analytical Chemists, Arlington, VA.
Baker D.H., Batal A.B., Parr T.M., Augspurger N.R. and Parsons C.M. (2002). Ideal ratio (relative to lysine) of tryptophan, threonine, isoleucine and valine for chicks during the second and third weeks posthatch. Poult. Sci. 81, 485-494.
Bhargava K.K., Hanson R.P. and Sunde M.L. (1971). Effects of methionine and valine on growth and antibody production in chicks infected with live or killed Newcastle disease virus. Poult. Sci. 50, 614-619.
Burnham D. and Gous R.M. (1992). Isoleucine requirements of the chicken: requirement for maintenance. Br. Poult. Sci. 33, 59-69.
Corzo A., Kidd M.T., Dozier III W.A. and Vieira S.L. (2007). Marginality and needs of dietary valine for broilers fed certain all-vegetable diets. J. Appl. Poult. Res16, 546-554.
Corzo A., Dozier W.A. and Kidd M.T. (2008). Valine nutrient recommendations for Ross × Ross 308 broilers. Poult. Sci. 87, 335-338.
Coto C., Wang Z., Cerrate S., Perazzo F., Abdel-Maksoud A., Yan F. and Waldroup P.W. (2009). Effect of protein and amino acid levels on bone formation in diets varying in calcium content. Int. J. Poult. Sci. 8, 307-316.
Emmert J.L. and Baker. D.H. (1997). Use of the ideal protein concept for precision formulation of amino acid levels in broiler diets. J. Appl. Poult. Res. 6, 462-470.
Farran M.T. and Thomas O.P. (1990). Dietary requirements of leucine, isoleucine and valine in male broilers during the starter period. Poult. Sci. 69, 757-762.
Farran M.T. and Thomas O.P. (1992). Valine deficiency. 2. The effect of feeding a valine-deficient diet during the starter period on performance and leg abnormality of male broiler chicks. Poult. Sci. 71, 1885-1890.
Kidd M.T., Kerr B.J., Halpin K.M., McWard G.W. and Quarles C.L. (1998). Lysine levels in starter and grower-finisher diets affect broiler performance and carcass traits. J. Appl. Poult. Res. 7, 351-358.
Kidd M.T., Burnham D.J. and Kerr B.J. (2004). Dietary isoleucine responses in male broiler chickens. Br. Poult. Sci. 45, 6 7-75.
Li P., Yin Y.L. and Li D.F. (2007). Amino acids and immune function. Br. J. Nutr. 98, 237-252.
Liames C. and Fontaine J. (1994). Determination of amino acids in feeds: collaborative study. J. AOAC Int. 77, 1362-1402.
Mozdziak P.E., Walsh T.J. and McCoy D.W. (2002). The effect of early posthatch nutrition on satellite cell mitotic activity. Poult. Sci. 81, 1703-1708.
Newsholme E.A. and Calder P.C. (1997). The proposed role of glutamine in some cells of the immune system and speculative consequences for the whole animal. Nutrition. 13, 728-730.
NRC. (1994). Nutrient Requirements of Poultry, 9th Rev. Ed. National Academy Press, Washington, DC.
Quick Chick. (2006). The Dynamic Amino Acid Recommendations for Broilers. Degussa Feed Additives. Hanau, Germany.
SAS Institute. (2004). SAS®/STAT Software, Release 9.1. SAS Institute, Inc., Cary, NC.
Thayer S.G. and Beard C.W. (1998). Serologic procedures. Pp. 256-258 in A Laboratory Manual for the Isolation and Identification of Avian Pathogens. D.E. Swayne, J.R. Glisson, M.W. Jackwood, J.E. Pearson and W.M. Reed, Eds. The American Association of Avian Pathologists, Kennett Square, PA.
Villegas P. (1999). Laboratory Manual: Avian Virus Diseases. Poultry Disease Research Center, Athens, GA.