J.C. Baitshotlhi
Department of Animal Science and Production, Botswana College of Agriculture, Private Bag-0027, Gaborone, Botswana
J.C. Moreki
Department of Animal Science and Production, Botswana College of Agriculture, Private Bag-0027, Gaborone, Botswana
C.M. Tsopito
Department of Animal Science and Production, Botswana College of Agriculture, Private Bag-0027, Gaborone, Botswana
S.J. Nsoso
Department of Animal Science and Production, Botswana College of Agriculture, Private Bag-0027, Gaborone, Botswana
ABSTRACT
This study investigated the influence of stocking density on bone development of family chickens up to 18 weeks of age. A total of 232 unsexed day-old family chicks were used in a completely randomized design. Birds were randomly assigned to four stocking densities, i.e., D1 (10 birds/m2), D2 (13 birds/m2), D3 (16 birds/m2) and D4 (19 birds/m2) in the first phase (0-6 weeks). Each treatment was replicated four times. Two birds were slaughtered at 6, 12 and 18 weeks of age from each replicate to evaluate bone length, bone width, bone weight and bone chemical composition (ash weight, Ca, P and Mg). In the second phase (7 to 12 weeks) the stocking densities were 8 birds/m2 (D1), 11 birds/m2 (D2), 14 birds/m2 (D3) and 17 birds/m2 and 6 birds/m2 (D1), 9 birds/m2 (D2), 12 birds/m2 (D3) and 15 birds/m2 (D4) in the final phase (13 to 18 weeks). General Linear Model (GLM) procedure of Statistical Analysis System was used to estimate the differences between treatment means for different stocking densities. Stocking density in all the three phases did not have a significant (p>0.05) effect on bone dimensions and chemical composition. It is therefore concluded that stocking density had no influence on bone development of family chickens raised up to 18 weeks of age under intensive system probably due to slaughtering that occurred at six weekly intervals. It appeared that family chickens could be raised at a density of 15 birds/m2 in winter without any detrimental effect on bone development and related parameters. Further studies should be done using identical densities throughout the research period to avoid disturbing the control which will make blocking by age possible.
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How to cite this article
J.C. Baitshotlhi, J.C. Moreki, C.M. Tsopito and S.J. Nsoso, 2014. Influence of Stocking Density on Bone Development in Family Chickens Reared up to 18 Weeks of Age Under Intensive System. International Journal of Poultry Science, 13: 652-656.
DOI: 10.3923/ijps.2014.652.656
URL: https://scialert.net/abstract/?doi=ijps.2014.652.656
DOI: 10.3923/ijps.2014.652.656
URL: https://scialert.net/abstract/?doi=ijps.2014.652.656
REFERENCES
- Buijs, S., E. Van Poucke, S. Van Dongen, L. Lens, J. Baert and F.A. Tuyttens, 2012. The influence of stocking density on broiler chicken bone quality and fluctuating asymmetry. Poult. Sci., 91: 1759-1767.
CrossRefDirect Link - Gueye, E.F., 1998. Village egg and fowl meat production in Africa. Word Poult. Sci. J., 54: 73-86.
CrossRefDirect Link - Hall, A.L., 2001. The effect of stocking density on the welfare and behaviour of broiler chickens reared commercially. Anim. Welfare, 10: 23-40.
Direct Link - Lewis, P.D., G.C. Perry, L.J. Farmer and R.L.S. Patterson, 1997. Responses of two genotypes of chicken to the diets and stocking densities typical of UK and 'Label Rouge' production systems: I. Performance, behaviour and carcass composition. Meat Sci., 45: 501-516.
CrossRefDirect Link - Liu, D., H.P. Viet, J.H. Wilson and D.M. Denbow, 2003. Maternal dietary lipids alter bone chemical composition, mechanical properties and histological characteristics of progeny of Japanese quail. Poult. Sci., 82: 463-473.
CrossRefPubMedDirect Link - Moreki, J.C., H.J. Van der Merwe and J.P. Hayes, 2011. Influence of dietary calcium levels on bone development in broiler breeder pullets up to 18 weeks of age. Online J. Anim. Feed Res., 1: 28-39.
Direct Link - Oliveira, A.F.G., L.D.G. Bruno, E.R.M. Garcia, M.C.P. Leite, A.P.S. Ton and L. Lorencon, 2012. Efeito da densidade de criacao e do grupo genetico sobre o desempenho e o desenvolvimento osseo de frangos de corte [Effects of stocking density and genetic group on broilers performance and bone development]. Scientia Agraria Paranaensis, 11: 49-64, (In Portuguese).
Direct Link - Rath, N.C., G.R. Huff, W.E. Huff and J.M. Balog, 2000. Factors regulating bone maturity and strength in poultry. Poult. Sci., 79: 1024-1032.
CrossRefPubMedDirect Link - Simsek, U.G., M. Ciftci, I.H. Cerci, M. Bayraktar, B. Dalkilic, O. Arslan and T.A. Balci, 2011. Impact of stocking density and feeding regimen on broilers: Performance, carcass traits and bone mineralisation. J. Applied Anim. Res., 39: 230-233.
CrossRefDirect Link - Skrbic, Z., Z. Pavlovski and M. Lukic, 2009. Stocking density: Factor of production performance, quality and broiler welfare. Biotechnol. Anim. Husbandry, 25: 359-372.
Direct Link - Skrbic, Z., Z. Pavlovski, M. Lukic and D. Milic, 2011. The effect of rearing conditions on carcass slaughter quality of broilers from intensive production. Afr. J. Biotechnol., 10: 1945-1952.
Direct Link - Tablante, N.L., I. Estevez and E. Russek-Cohen, 2003. Effect of perches and stocking density on tibial dyschondroplasia and bone mineralization as measured by bone ash in broiler chickens. J. Applied Poult. Res., 12: 53-59.
Direct Link - Ventura, B.A., F. Siewerdt and I. Estevez, 2010. Effects of barrier perches and density on broiler leg health, fear and performance. Poult. Sci., 89: 1574-1583.
CrossRefPubMedDirect Link - Yakubu, A., J.A. Ayoade, Y.M. Dahiru, 2010. Effects of genotype and population density on growth performance, carcass characteristics and cost-benefits of broiler chickens in North Central Nigeria. Trop. Anim. Health Prod., 42: 719-727.
CrossRefDirect Link