Tackling the future challenges of Organic Animal Husbandry - vTI

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! Agriculture and Forestry Research, Special Issue No 362 (Braunschweig, 2012) ISSN 0376-0723 Download: www.vti.bund.de/en/startseite/vti-publications/landbauforschung-special-issues.html ded by numbers observations. The number of birds performing pecking activity was recorded and expressed as total number pecks per birdper hour. The data were subjected to one way analysis of variance; differences were tested using student t- test. All statistical procedures were carried out by SAS (1992). Results The data on the productive performance and some behavioral traits of Black Nera ® birds fed and reared under conventional and organic husbandry management systems are presented in Table 1. Table 1: Productive performance and behavioral traits of the experimental birds Management systems Parameters Conventional Organic (deep litter with (battery cage) access to free run) Body weight (20 weeks) (kg /bird) 1.47±0.01 1.47±0.00 Body weight (30weeks) (kg /bird) 1.66±0.02 1.62±0.01 Feed intake 20–30 weeks (kg/bird) 1.25±0.28 a 1.10±0.02 b Hen-day egg production 20-30weeks(%) 73.84±2.93 a 51.47±1.11 b Mean egg weight (20–30 weeks) (g) 58.68±1.21 60.23±1.49 Feed per dozen egg laid 2.17±0.10 a 2.06±0.58 b Egg Yolk colour 1.66±0.00 b 3.00±0.00 a Haugh unit Feather loss score 80.00±0.53 94.11±0.60 Head/neck area 1.40±0.05 a 1.07±0.03 b Back/vent area 2.45±0.12 a 1.32±0.09 b Pecking activity (Pecks/bird/hour) 28.02±1.02 a 6.00±0.21 b Mortality (%) 0.33±0.00 0.33±0.00 abc Means in the same row with different superscripts differ significantly (p
RAHMANN G & GODINHO D (Ed.) (2012): Tackling the Future Challenges of Organic Animal Husbandry. Proceedings of the 2 nd OAHC, Hamburg/Trenthorst, Germany, Sep 12-14, 2012 se. Loss of feathers to the back and vent areas was indication of feather pecking. Damage to feathers on the head and neck on the other hand indicated the occurance of aggressive pecking caused by failings of the equipment or housing set-up. It was concluded that organic system of egg production supported lower feed intake and feed conversion value (feed per dozen egg laid) and reduced potential management problems due to pecking and aggression among laying hens. Suggestions to tackle the future challenges of organic animal husbandry There should be fusion of research and empirical farmers’ knowledge in tackling future challenges in area of applying organic principles (health, ecology, fairness and care) into organic poultry production systems as revealed in this study. References Altuman, J., 1974. Observational study of behaviour: Sampling method. Behaviour. 49:227-267. Craig, J. V., and J. C. Swanson. 1994. Review. Welfare perspectives on hens kept for egg production. Poult. Sci. 73:921–938. El-Lethey, H., T.W. Jungi, and B. Huber-Eicher, 2001. Effects of feeding corticosterone and housing conditions on feather pecking in laying hens (Gallus domesticus). Physiology and Behaviour. 73:243-251. Newberry, R.C., L. J. Keeling, I. Estevez, and B. Bilcik, 2007. Behaviour when young as a predictor of severe feather pecking in adult laying hens: The redirected foraging hypothesis revisited. Appl. Anim. Behav. Sci. 107:262-274. SAS Institute, 1992. SAS, STAT software: changes and enhancements, release 6.07. SAS Technical Report P. 229. Cary. NC. Sikur, V. R., F. E. Robinson, D. R. Korver, R. A. Renema, and M. J. Zuidhof. 2004. Effects of nutrient density on growth and carcass traits in fast- and slow-feathering female turkeys. Poult. Sci. 83:1507–1517. 163
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Sonderheft 362 Special Issue Tackli
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Landbauforschung vTI Agriculture an
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Foreword Organic animal husbandry s
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Content RAHMANN G & GODINHO D (Ed.)
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Introduction RAHMANN G & GODINHO D
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References RAHMANN G & GODINHO D (E
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Abstract RAHMANN G & GODINHO D (Ed.
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Discussion RAHMANN G & GODINHO D (E
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Factors Plant Height (cm) RAHMANN G
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Results RAHMANN G & GODINHO D (Ed.)
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FEC adjusted for dry matter 12000 1
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Conclusions RAHMANN G & GODINHO D (
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Kg liveweight (mean) RAHMANN G & GO
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348 Herwart Böhm (Hrsg.) (2011) Op
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