INFLUENCE OF HANDLING PROCESSES FOR BROILERS ON MORTALITY AND CARCASS QUALITY AT SLAUGHTERHOUSE | ||
| Misr Journal of Agricultural Engineering | ||
| Article 23, Volume 34, Issue 4, October 2017, Pages 1923-1948 PDF (1.42 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjae.2017.96214 | ||
| Authors | ||
| F A. A. Hassan1; A. I. Lashin2 | ||
| 1Bio-Eng. Dept., Ag. Eng. Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt. | ||
| 2Chemistry Dept., Animal Health Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt. | ||
| Abstract | ||
| The current study was conducted during spring and summer of 2016 and winter of 2017 at Al-Watania Poultry Company. A preliminary test was performed to identify the optimum operating conditions of a proposed mechanical catching machine (CIEMME Super Apollo L) and compare the effect of using this machine versus manual catching under commercial conditions, with respect to the performance rate; operation and production costs at the optimum operating conditions and the “welfare“ stress indices, which were concentration of Corticosterone “CORT”; Adrenocorticotropic “ACTH”; glucose and lactate with tonic immobility as ant-mortem stress indices and dead on arrival “DOA”; the incidence of bruises and the rate of downgrade carcass quality as postmortem stress indices. The preliminary test results indicated that, the optimum operating conditions for the proposed catching machine were forward speed of 0.1 m/sec. and collection belt speed of 0.65 m/sec. at these conditions the recorded machine productivity were 20.66 and 20.59 ton/h and the recorded losses were 0.049 and 0.06 % at MBM of 1600 or 2000 gm. respectively. The main test results indicated that, the performance rate of catching machine ranged from 8227 to 10418 Bird/h. Meanwhile it was ranged between 4474 to 5317 Bird/h. with manual catching. The average catching costs for the mechanical and manual method was 9.48 L.E/ton and 44.7 L.E/ton respectively. As far the stress indices, the mechanically caught broilers had lower CORT concentrations and shorter durations of tonic immobility. That means, mechanical catching, birds were less stressed than the manually caught. There is a positive feedback mechanism between CORT and glucose; lactate and duration of tonic immobility. Meanwhile there is a negative feedback mechanism between concentration of CORT and ACTH hormones. The highest DOA was 0.76% and 0.53% recorded with manual catching at summer and winter respectively, while it was 0.439 and 0.409 with mechanical catching at summer and winter respectively, with transport distance of >250 km and mean body mass “MBM” of 2000 g. The contusion of wing was reduced from 3.81 %; 3.27 % for broiler caught manually to 3.02 %; 2.18 % for broilers caught mechanically. However, there was no difference in contusions in the breast or paw between the two catching methods. Therefore, it can be concluded that the use of the broilers mechanical catching machine, CIEMME Super Apollo L, appears to be a good alternative to manual catching from the worker’s; bird’s welfare and economic point of view. | ||
| Keywords | ||
| Broilers; welfare; mechanical catching; optimum operating conditions; stress indices; mortality and carcass quality | ||
| References | ||
|
Awady, M. N., 1978. Tractor and farm machinery, Text book, Fac. of Ag., Ain-Shams Univ.: 164-167.
Berry, P. S., P.J. Kettlewell and P. Moran, 1990. The AFRC Mark I. experimental broiler harvester. J.
Cockrem, J. F. 2007. Stress, corticosterone response and avian personalities. J. Ornithol. 148:169–178.
Delezie, E., 2006. Manual and mechanical catching and transport of broilers: Implications for welfare, physiology and product quality and ethical considerations. Ph.D Diss. Nr 721. K.U. Leuven, Leuven.
Delezie, E., D. Lips, R. Lips, and E. Decuypere, 2006. Is the mechanisation of catching broilers a welfare improvement? Anim. Welf. 15(2):141-147.
Delezie, E., D. Lips, R. Lips, and E. Decuypere, 2005. Mechanical catching of broiler chickens is a viable alternative for manual catching from an animal welfare point of view. 15(2):141-147. Animal sc. Papers and reports. 23 (1): 257-264.
Duncan, I. J. H. 1989. The assessment of welfare during the handling and transport of broilers. Proc. 3rd Eur. Symp. Poult. Welfare, Tours, France. WPSA, Beekbergen, Netherlands. Pp: 93–107
Gocke A., 2000. Untersuchungüber den Einsatzeiner Hähnchenfang maschine in Mastbetrieben in Norddeutschland Doctoral Th. Vet. Med., Germany TierärztlicheHochschule Hannover
Gregory N.G., 1998. Animal Welfare and Meat Science.CABI Publ., Ch. 10: 183-194.
Gregory N.G., Austin S.D., 1992. Causes of trauma in broilers arriving dead at poultry processing plants. Veterinary Rec., 131: 501–503.
Jones, R.B. 1992. The nature of handling immediately prior to test affects tonic immobility fear reactions in laying hens and broilers. Appl. Anim. Behav. Sci. 34:247-254.
Kannan, G. and J. A. Mench, 1996. Influence of different handling methods and crating periods on plasma corticosterone levels inbroilers. Br. Poult. Sci. 37:21-31.
Knowles T.G., Broom D.M., 1990. The handling and transport of broilers and spent hens. Applied Animal Behaviour Sc., 28: 75–91.
Lacy, M. P. a Czarick, M., 1998. Mechanical harvesting of broilers. Poultry Sc., 77, 12: 1794-1797. ISSN 1525-3171.
Löhren, U., 2012. Overview on current practices of poultry slaughtering and poultry meat inspection. External scientific report, The European food Safety Authority, EN-298. 5-8. Available online: www.efsa.europa.eu/publications
M.A.E.A.S., 2015. Animal wealth statistics. Ministry of Ag. Ec. Affairs Sector, Ag. Stat., Vol. (2): 337-338.
Nijdam, E., Zailan, A.R.M., Van Eck, J.H.H., Decuypere, E. and Stegeman, J.A., 2006. Pathological features in dead on arrival broilers with special reference to heart disorders’, Poultry Sc., 85,: 1303–1308.
Nijdam, E., Delezie E., Lambooij, E., Nabuurs M.J.A., Decuypere E., and Stegeman J.A., 2005. Processing, products, and food safety comparison of bruises and mortality, stress parameters, and meat quality in manually and mechanically caught broilers. Poultry Sc., 84: 467–474.
Nijdam, E., Arens, P., Lambooij, E., Decuypere, E. and Stegeman, J. A., 2004. Factors influencing bruises and mortality of broilers during catching, transport, and lairage. Poultry Sc., 83, 9: 1610-1615. ISSN 1525-3171.
Ramasamy, S., E.R. Benson and G.L. Van Wicklen. 2004. Efficiency of a commercial mechanical chicken catching system. J. Appl. Poult. Res. 13(1):19.
Remmer, M., 2011. Chicken Cat, Automated catching machines. Personal communications (orally or per email): cited by Löhren, U., 2012. Overview on current practices of poultry slaughtering and poultry meat inspection. European Food Safety Authority.
SCAHAW, 2000. Scientific Committee on Animal Health and Animal Welfare. The Welfare of Chickens Kept for Meat Production (Broilers). European Commission, Health and Consumer Protection Directorate General.
Schilling, M.W., Radhakrishnan, V., Thaxton, Y.V., Christensen, K., Thaxton J.P. and Jackson, V., 2008. The effects of broiler catching method on breast meat quality. Meat Sci. Jour., 79, 1: 163-171.
Steinhauser, L. a kol.: Produkce masa. Nakladatelství Last, Brno, 2000, 464s., ISBN 80-900260-7- 9.
Whiting, T. L., Mairead, E. D. a Rasali, D. P., 2007. Warm weather transport of broiler chickens in Manitoba II. Truck management factors associated with death loss in transit to slaughter. Canadian Vet. J., 48, 2: 148–154. ISSN: 0830-9000.
Zulkifli, I. M., T. Che Norma, C. H. Chong and T. C. Loh. 2000.Heterophil/lymphocyte and tonic immobility reactions to preslaughter handling in broiler chickens treated with ascorbic acid. Poult. Sci. 79:402-406. | ||
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