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2. Influence of environmental enrichment on the behaviour, performance and meat quality of domestic pigs;Beattie;Livest. Prod. Sci.,2000
3. British Standards Institution, 1990. Buildings and structures for agriculture. Part 40. Code of practice for design and construction of cattle buildings. British Standard: 5502.
4. Tissue separation — to assess beef and lamb variation;Cuthbertsen,1972
5. Beef production with special reference to fattening bulls;Daelemans,1987