Growth Parameters Of Heavy-Breed Avian Youth Fed Organic System
Keywords:
organic system, heavy-breed poultry, growth parametersAbstract
The experiment on the assessment of development parameters in the case of heavy-breed young poultry was carried out in concordance with the common legislation, with the provision of feeding and maintenance conditions specific to the organic system. The experiment lasted for 84 days (150 chickens); in this period, we used two structures of concentrate mixtures: CM1 (from 1 day to 42 days), with the following characteristics 3003 kcal EM, 19.91% CP, 1% lysine, 0.57% methionine + cystine, 1.08% Ca and 0.62% P and CM2 (from 43 to 84 days) with 2981 kcal EM, 16.03% CP, 0.73% lysine, 0.47% methionine+cystine, 1.06% Ca and 0.58% P. During the experiment, we recorded the growth performances (body weight, growth, daily gain) and the CI. The body weight recorded at 84 days was 1623.10±37.0 g, with a daily mean growth of 19.32 g and a specific intake of: 3.68 kg AC, 11261.28 kcal EM, 635.35 g CP, 31.03 g lysine and 19.02 g methionine+cystine/kg growth. We determined a mathematical model for body mass prediction depending on energy and protein ingestion, generating an equation of this type: y=a+b*ln(x1)+c*ln(x1)2+d*x2+e*x22, with a multiple determination coefficient R2=0.99 and an error percentage at the end of the growth period of 0.02%, beetwen predicted and experimental values.
References
Blair, R., Nutrition and feeding of organic poultry, Cab International, 2008
Anne Fanatico, Organic poultry production in the United States, Publication of ATTRA, National Sustainable Agriculture Information Service (2008), www.attra.ncat.org
Sundrum, A., Protein supply in organic poultry and pig production, Proceedings of the 1st IFOAM International Conference on Animals in Organic Production, Aug. 23-25, 2006, pp, 195-199, St. Paul.
*** REGULAMENT (CE) NR. 834/2007 AL CONSILIULUI din 28 IUNIE 2007 privind producţia ecologică şi etichetarea produselor ecologice, precum şi de abrogare a Regulamentului (CCE) nr. 2092/91
*** REGULAMENT (CE) NR. 889/2008 AL COMISIEI din 5 septembrie 2008 de stabilire a normelor de aplicare a Regulamentului (CE) nr. 834/2007 al Consiliului privind producţia ecologică şi etichetarea produselor ecologice în ceea ce priveşte producţia ecologică, etichetarea şi controlul.
O `Connell K. and. Lynch, B, Organic Poultry Production in Ireland. Problems and possible solutions, Cork Teagasc, Moorepark, 2004
Drinceanu D, Ştef Lavinia, Simiz Eliza, Julean C., Luca I., Mic Florica -Model setting of the micromineral supplementation values in heavy breed avian youth raised in organic system, Journal of Food, Agriculture and Environment, vol. 8 (3&4) 430-433, 2010, July-October, www.world-food.net, Received 9 August 2010, accepted 30 oct 2010
Grossu Dorina, Burlacu R., Burlacu Gh., Marinescu Al. G., Modelarea matematică a proceselor de metabolism la pasări, Ed. Cartea Universitară, Bucuresti, 2004
*** NRC Nutrient Requirements of Poultry, 9th edn,. National Academy of Sciences, Washington, DC, 1994
Castellini, C., Basco Dal, A., Mugnai Cecilia, Bernardini, Performance and behaviour of chickens with different growing rate reared according to the organic system, Ttal. J. Anim. Sci (6), 2003, pp. 561-573
Gordon, S. and Charles D.H., Niche and Organic Chicken Products, Nottingham University Press, 2002
Burlacu, R., Current aspects concerning the productive potential of feed and their use in monogastric animals, The 39th International Session of Scientific communications of the Faculty of Animal Science, Bucharest, Romania, Scientific papers, seria D, vol. LIII, 2010, pp. 81-85
Koops W.J., Multiphasic analysis of growth, PhD Thesis, Wageningen Agric., Netherlands, 1989
Burlacu Gh., Burlacu R., Columbeanu I. and Alexandru, G., Matematical model for energy and protein balace simulation in broiler. Archive of Animal Nutrition, Berlin, 1990, 40 (5/6), 469-484
Emmans G.C., Growth, body composition and feed intake. World`s Poultry Science Journal 43, 208-227
