The effect of reduced zinc levels on performance parameters of broiler chickens
Keywords:broiler, zinc level, zinc oxide, carcass yield, liver
AbstractThe experiment was conducted to determine the effect of reduced supplemental zinc levels on broiler growth and carcass yield. A total of 160 male broiler chicks (Ross 308) divided into four groups were allotted to 16 cages with 10 birds per cage in each of group and kept in a temperature-controlled room. During the trial, chicks were ad libitum access to feed and water. The experiment started at 11 days of broiler age and chicks were fattened up to 35 days of age. It consisted of 4 dietary treatments with 4 replications per treatment. A corn-wheat-soybean meal basal diet containing 25.84 mg Zn.kg-1 was formulated and zinc levels of 120, 40 or 20 mg.kg-1 was supplied as zinc oxide to give four dietary treatments. At the end of the feeding trial, 24 birds from each group were randomly selected, slaughtered and carcass evaluation was performed. The results show that different levels of zinc had no significant effect on body weight of broilers or feed consumption ratio. These parameters increased by decreasing zinc levels from 120 to 20 mg Zn.kg-1 similarly as the carcass yield, percentages of breast meat and leg meat, but differences between these groups were not significant. In case of relative liver weight and zinc concentration in liver there were significant difference (p <0.05) between group given supplemented zinc of 40 mg.kg-1 and group without zinc supplementation and 120 mg.kg-1 and 40 mg.kg-1, respectively. No signs of disorders such as loss of appetite, growth depression or abnormalities of the skin was appeared in chicks. It seems that reduced supplemented zinc levels from 120 to 20 mg.kg-1 (total Zn 153.13 mg.kg-1 to 45.28 mg.kg-1 respectively) not influenced growth performance parameters of broilers fed corn-wheat-soybean meal diet.
Ammerman, C. B., Henry, P. R., Miles, R. D. 1998. Supplemental organically-bound mineral compounds in livestock nutrition. In Garnsworthy, P. C. Wiseman, Recent advances in animal nutrition. Nottingham, UK: Nottingham University Press, p. 67-91.
Anonymous. 2014. Technological procedure for broiler Ross [online]. Aviagen Group [cit. 2015-09-15]. Available at: http://en.aviagen.com/ross-308.
Ao, T., Pierce, J. L., Pescatore, A. J., Cantor, A. H., Dawson, K. A., Ford, M. J., Paul, M. 2011. Effects of feeding different concentration and forms of zinc on the performance and tissue mineral status of broiler chicks. British Poultry Science, vol. 52, no. 4, p. 466-471. https://doi.org/10.1080/00071668.2011.588198 PMid:21919574 DOI: https://doi.org/10.1080/00071668.2011.588198
Cao, J., Henry, P. R., Guo, R., Holwerda, R. A., Toth, J. P., Littell, R. C., Miles, R. D., Ammerman, C. B. 2000. Chemical characteristics and relative bioavailability of supplemental organic zinc sources for poultry and ruminants. Journal of Animal Science, vol. 78, no. 8, p. 2039-2054. PMid:10947086 DOI: https://doi.org/10.2527/2000.7882039x
Commission Regulation (EC) No 1334/2003 of 25 July 2003amending the conditions for authorisation of a number of additives in feeding stuffs belonging to the group of trace elements. OJ L 187, 26.7. 2003, p. 11.
EFSA, 2014. Scientific Opinion on the potential reduction of the currently authorised maximum zinc content in complete feed. EFSA Journal 2014, vol. 12, no. 5, p. 3668-3745. DOI: https://doi.org/10.2903/j.efsa.2014.3668
Haščík, P., Melich, M., Kačániová, M., Pál, G., Mihok, M., Čuboň, J., Mellen, M., Vavrišinová, K. 2010. The influence of propolis application to meat utility on Ross 308 broiler chickens. Potravinarstvo, vol. 4, no. 2, p. 29-34. https://doi.org/10.5219/48 DOI: https://doi.org/10.5219/48
Huang, Y. L., Lu, L., Luo X. G., Liu B. 2007. An optimal dietary zinc level of broiler chicks fed a cornsoybean meal diet. Poultry Science, vol. 86, no. 12, p. 2582-2589. https://doi.org/10.3382/ps.2007-00088 PMid:18029804 DOI: https://doi.org/10.3382/ps.2007-00088
Jahanian, R., Moghaddam, H. N., Rezaei, A. 2008. Improved broiler chick performance by dietary supplementation of organic zinc sources. Asian-Australasian Journal of Animal, vol. 21, no. 9, p. 1348-1354. https://doi.org/10.5713/ajas.2008.70699 DOI: https://doi.org/10.5713/ajas.2008.70699
Liptaiová, D., Angelovičová, M., Močár, K., Štofan, D. 2010. The effect of cinnamomi aetheroleum used per os on fat content in broilers meat. Potravinarstvo, vol. 4, no. 2, p. 45-49. https://doi.org/10.5219/51 DOI: https://doi.org/10.5219/51
Nair, K. M., Choudhury, D. R. 2013. Zinc nutrition in health and diseases. Journal of SAT Agricultural Research, vol. 11, p. 1-6.
Nevrkla, P., Čechová, M., Hadaš, Z. 2014. Use of repopulation for optimizing sow reproductive performance and piglet loss. Acta Veterinaria Brno. vol. 83, no. 4, p. 321-325. https://doi.org/10.2754/avb201483040321 DOI: https://doi.org/10.2754/avb201483040321
Nevrkla, P., Hadaš, Z. 2015. Effect of housing of lactating sows on their reproductive performance and losses of piglets from birth to weaning. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, vol. 63, no. 1, p. 95-100. https://doi.org/10.11118/actaun201563010095 DOI: https://doi.org/10.11118/actaun201563010095
NRC (National Research Council), 1994. Nutrient Requirements of Poultry. 9th revised edition. National Academy Press, Washington, DC, USA.
Star, L., van der Klis, J. D, Rapp, C., Ward, T. L. 2012. Bioavailability of organic and inorganic zinc sources in male broilers. Poultry Science, vol. 91, no. 12, p. 3115-3120. https://doi.org/10.3382/ps.2012-02314 PMid:23155021 DOI: https://doi.org/10.3382/ps.2012-02314
Suttle, N. F. 2010. Zinc. In Mineral nutrition of livestock. 4th ed. Cambridge, UK: CABI, p. 426-458. ISBN 9781845934729. https://doi.org/10.1079/9781845934729.0426 DOI: https://doi.org/10.1079/9781845934729.0426
Underwood, E. J., Suttle, N.F. 1999. Zinc. In Mineral nutrition of livestock. 3rd ed. New York, USA: CABI, p. 477-512. https://doi.org/10.1079/9780851991283.0477 DOI: https://doi.org/10.1079/9780851991283.0477
Wedekind, K. J., Baker, D. H. 1990. Zinc bioavailability in feed-grade sources of zinc. Journal of Animal Science, vol. 68, no. 3, p. 684-689. PMid:2318732 DOI: https://doi.org/10.2527/1990.683684x
How to Cite
This license permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.