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Aligning health and welfare principles and practice in organic dairy systems: a review

Published online by Cambridge University Press:  23 October 2009

C. L. Marley*
Affiliation:
Animal and Microbial Science Division, Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EB, UK
R. F. Weller
Affiliation:
Animal and Microbial Science Division, Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Gogerddan, Aberystwyth, SY23 3EB, UK
M. Neale
Affiliation:
Department of Clinical Veterinary Science, University of Bristol, Langford BS40 5DU, UK
D. C. J. Main
Affiliation:
Department of Clinical Veterinary Science, University of Bristol, Langford BS40 5DU, UK
S. Roderick
Affiliation:
Organic Studies Centre, Duchy College, Rosewarne, Cornwall, UK TR14 0AB, UK
R. Keatinge
Affiliation:
Westburn, Mainhill, St Boswells, Melrose, Roxburghshire UK TD6 0HG, UK
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Abstract

This review provides an assessment of research findings into the current practices and standards and the principles and aspirations for organic dairy production, with respect to the health and welfare of the dairy cow. The relationships between the four main factors: management, environment, genetics and nutrition and their impact on the health and welfare status of organic dairy cows are considered. The concept that good animal health and welfare is more than merely the absence of disease, with behavioural aspects of health and welfare such as physiological and psychological needs, is also discussed. These factors are inter-related and important in all dairy systems, irrespective of whether the system is organic, low-input or intensive. Incidences of individual clinical and sub-clinical diseases that are recorded in conventional dairy systems also occur in organic dairy systems, with infertility, lameness and mastitis being the major problems. However, the magnitude of the incidence of many of these diseases may be either lower or higher in organic systems due to different management practices and the standards defined for organic milk production that, for example, prohibit the routine use of conventional medicines and require the feeding of high-forage diets. In relation to different systems, it is important to note that contrary to a common assumption, good welfare does not necessarily occur with more extensive systems. The type of organic system (self-sufficient, purchased-feed) also has the potential to have a major influence on the incidence of health problems and the reproductive status of organic dairy herds. Health status is also influenced by environmental and welfare factors, including the method of rearing replacement animals, type of housing and the geographical and climatic conditions of individual farms. Overall, this review identifies where conflicts arise between current practice and the organic principles and standards, and aims to provide suggestions to bring about further improvement in organic dairy health and welfare.

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Copyright © The Animal Consortium 2009

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References

ADAS 1987. Managing the autumn calving cow. Report P3066. MAFF Publication, Alnwick, Northumberland, 4 pp.Google Scholar
Andrews, T 1991. Suffering animals in a green landscape? Dairy Farmer 38, 2628.Google Scholar
Baker, AMC 1980. A study of herbage production and its utilisation by dairy cattle from continuously grazed swards. MSc Thesis, University of Glasgow.Google Scholar
Bakke, MJ 2003. Feeding and management of Jerseys and Holsteins: should there be a difference? In Recent advances in animal nutrition (ed. PC Garnsworthy and J Wiseman), pp. 191198. Nottingham University Press, Nottingham, UK.Google Scholar
Bapst, B 2001. Swiss experiences on practical cattle breeding strategies for organic dairy herds. In Breeding and feeding for animal health and welfare in organic livestock systems (ed. M Hovi and T Baars). In Proceedings of the Fourth NAHOWA Workshop, 24–27 March 2001, Wageningen, pp. 44–50.Google Scholar
Barton, BA, Rosario, HA, Anderson, GW, Grindle, BP, Carroll, DJ 1996. Effects of dietary crude protein, breed, parity, and health status on the fertility of dairy cows. Journal of Dairy Science 79, 22252236.CrossRefGoogle ScholarPubMed
Beh, KJ, Maddox, JF 1996. Prospects for development of genetic markers for resistance to gastrointestinal parasite infection in sheep. International Journal for Parasitology 26, 879897.CrossRefGoogle ScholarPubMed
Blowey, R 1994. Dairy cow housing. In Livestock housing (ed. CM Wathes and DR Charles), pp. 305337. CAB International, Wallingford, UK.Google Scholar
Blowey, R, Edmondson, P 1995. Mastitis control in dairy herds. Farming Press Books, Ipswich, pp. 163167.Google Scholar
Boehncke, E 1997. Preventative strategies as a health resource for organic farming. In Resource use in organic farming (ed. J Isart and JJ Llerena), pp. 25–35. Proceedings of the third ENOF Workshop, 5–6 June, Ancona.Google Scholar
Brick, E 1998. Outwintering dairy cattle: animal health issues. Research Publication 27. University of Wisconsin-Madison, Madison, WI, USA.Google Scholar
Breuer, K, Hemsworth, PH, Barnett, JL, Matthews, LR, Coleman, GJ 2000. Behavioural response to humans and the productivity of commercial dairy cows. Applied Animal Behaviour Science 66, 273288.CrossRefGoogle ScholarPubMed
Breuer, K, Hemsworth, PH, Coleman, GJ 2003. The effect of positive or negative handling on the behavioural and physiological responses of nonlactating heifers. Applied Animal Behaviour Science 84, 322.CrossRefGoogle Scholar
Broom, D 1991. Needs and welfare of housed calves. In New trend in veal calf production (ed. JHM Metz and CM Groenestein). Proceedings of the International Symposium on Veal Calf Production, EAAP Publications, Pudoc, Wageningen, The Netherlands, pp. 2331.Google Scholar
Brotherstone, S, Santarossa, J, Simm, G, Coffey, MP, Stott, AW 2003. Breeding strategies for organic dairy cattle. Final Report to Seerad and Defra. SAC, Edinburgh, 19 pp.Google Scholar
Butler, WR, Calaman, JJ, Beam, SW 1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. Journal of Animal Science 74, 858865.CrossRefGoogle ScholarPubMed
Chamberlain, AT, Wilkinson, JM 1996. Feeding the dairy cow. Chalcombe Publications, Lincoln, UK, 241 pp.Google Scholar
Christiansson, A, Nilsson, J, Bertilsson, J 1996. Bacillus cereus spores in raw milk. Factors affecting the contamination of milk during the grazing period. In Proceedings of the Symposium on Bacteriological Quality of Raw Milk, March 13–15 1996, Wolfpassing, Austria, pp. 3639. International Dairy Federation, Brussels, Belgium.Google Scholar
Clark, RG 1995. A study of high lamb liver copper concentrations on some farms in Otago and Southland. New Zealand Veterinary Journal 43, 141145.CrossRefGoogle ScholarPubMed
Coop, RL, Kyriazakis, I 2001. Influence of host nutrition on the development and consequences of nematode parasitism in ruminants. Trends in Parasitology 17, 325330.CrossRefGoogle ScholarPubMed
Cousins, CL, Higgs, TM, Jackson, ER, Neave, FK, Dodd, FH 1980. Susceptibility of the bovine udder to bacterial infection in the dry period. Journal of Dairy Research 47, 1118.CrossRefGoogle ScholarPubMed
Dewhurst, RJ, Fisher, WJ, Tweed, JKS, Wilkins, RJ 2003. Comparisons of grass and legume silages for milk production. 1. Production responses with different levels of concentrate. Journal of Dairy Science 86, 25982611.CrossRefGoogle ScholarPubMed
Domínguez-Toraño, IA, Cuquerella, M, Gómez-Muñoz, T, Méndez, S, Fernández-Pérez, FJ, Alunda, JM 2000. Vaccination of Manchego lambs against Haemonchus contortus with a somatic fraction (p26/23) of adult parasites. Parasite Immunology 22, 131138.CrossRefGoogle ScholarPubMed
Driehuis, F, Elferink, SJWHO 2000. The impact of the quality of silage on animal health and food safety: a review. Veterinary Quarterly 22, 212216.CrossRefGoogle ScholarPubMed
EC 1991. Council Regulation (EEC) No. 2092/91 of 24 June 1991 on organic production of agricultural products and indications referring thereto on agricultural products and foodstuffs. Official Journal of the European Communities L198 (22.7.91), 115.Google Scholar
EC 1999. Council Regulation (EC) No. 1804/1999 of 19 July 1999 supplementing Regulation (EEC) No. 2092/91 on organic crop production of agricultural products and indications referring thereto on agricultural products and foodstuffs to include livestock production. Official Journal of the European Communities L222 (24.8.99), 128.Google Scholar
Fall, N, Emanuelson, U, Martinsson, K, Jonsson, S 2008. Udder health at a Swedish research farm with both organic and conventional dairy cow management. Preventative Veterinary Medicine 83, 186195.CrossRefGoogle Scholar
Farm Animal Welfare Council (FAWC) 1997. Report on the welfare of dairy cattle. Farm Animal Welfare Council, London.Google Scholar
Farm Animal Welfare Council (FAWC) 2005. Report on the welfare implications of farm assurance schemes. Farm Animal Welfare Council, London.Google Scholar
Farm Animal Welfare Council (FAWC) 2006. Disbudding and dehorning. Retrieved November 11, 2008, from http://www.fawc.org.uk/reports/dairycow/dcowr069.htm.Google Scholar
Faulkner, PM, Weary, DM 2000. Reducing pain after dehorning in dairy calves. Journal of Dairy Science 83, 20372041.CrossRefGoogle ScholarPubMed
Food Standards Agency (FSA) 2002. McCance and Widdowson’s the composition of foods, 6th summary edition. Royal Society of Chemistry, Cambridge.Google Scholar
Froberg, S, Aspegren-Guldorff, A, Olsson, I, Marin, B, Berg, C, Hernandez, C, Galina, CS, Lidfors, L, Svennersten-Sjaunja, K 2007. Effect of restricted suckling on milk yield, milk composition and udder health in cows and behaviour and weight gain in calves, in dual-purpose cattle in the tropics. Tropical Animal Health and Production 39, 7181.CrossRefGoogle ScholarPubMed
Georges, M, Drinkwater, R, King, T, Mishra, A, Moore, SS, Nielsen, D, Sargeant, LS, Sorensen, A, Steele, MR, Zhao, XY, Womack, JE, Hetzel, J 1993. Microsatellite mapping of a gene affecting horn development in Bos Taurus. Nature Genetics 4, 206210.CrossRefGoogle ScholarPubMed
Goonewardene, LA, Price, MA, Okine, E, Berg, RT 1999. Behavioral responses to handling and restraint in dehorned and polled cattle. Applied Animal Behaviour Science 64, 159167.CrossRefGoogle Scholar
Grant, RJ, Albright, JL 2001. Effect of animal grouping on feeding behaviour and intake of dairy cattle. 2000 Joint ADSA/ASAS Annual Meeting. Journal of Dairy Science 84 (Elect. Supplement), E156E163.CrossRefGoogle Scholar
Harb, MY, Reynolds, VS, Campling, RC 1985. Eating behaviour, social dominance and voluntary intake of silage in group fed milking cattle. Grass and Forage Science 40, 113118.CrossRefGoogle Scholar
Haskell, M, Rutherford, K, Langford, F, Sherwood, L, Jack, M, Maggs, L, Athanasiadou, S, Wemelsfelder, F, Lawrence, A 2007. The welfare of dairy cows in organic milk production systems. Final Report to Defra. SAC, Edinburgh, 19 pp.Google Scholar
Hemsworth, PH 2007. Ethicial stockmanship. Australian Veterinary Journal 85, 194200.CrossRefGoogle ScholarPubMed
Hemsworth, PH, Coleman, GJ 1998. Human–Livestock interactions – the stockperson. In The stockperson and the productivity of intensively farmed animals. CAB International, Oxon, UK, 176 pp.Google Scholar
Heur, C, Van Straalen, WM, Schukken, YH, Dirkzwager, A, Noordhuizen, JPTM 2000. Prediction of energy balance in a high yielding dairy herd in early lactation: model development and precision. Livestock Production Science 65, 91105.CrossRefGoogle Scholar
Hewson, CJ, Dohoo, IR, Lemke, KA, Barkemaet, HW 2007. Factors affecting Canadian veterinarians’ use of analgesics when dehorning beef and dairy calves. Canadian Veterinary Journal 48, 11291136.Google ScholarPubMed
Hooijer, GA, Oijen, MA, Frankena, K, Noordhuizen, JP 2003. Milk production parameters in early lactation: potential risk factors of cystic ovarian disease in Dutch dairy cows. Livestock Production Science 81, 2533.CrossRefGoogle Scholar
Hörning, B 2006. Organic livestock husbandry and breeding. In Organic agriculture: a global perspective (ed. N Halberg, HF Alroe, MT Knudsen and ES Kristensen), pp. 151166. CABI, Oxon, UK.CrossRefGoogle Scholar
Hovi, M, Roderick, S 1999. An investigation of the incidence, treatment strategies and financial implications of mastitis in organic and conventionally managed UK dairy herds. Report to Defra. Reading, UK. Defra report OF0124T, 19 pp.Google Scholar
Hovi, M, Douglas, G, Vaarst, M, Andreas, S, Walkenhorst, M, Roderick, S 2004. Promoting health and welfare through planning. In Animal health and welfare in organic agriculture (ed. M Vaarst, S Roderick, V Lund and W Lockeretz), pp. 253277. CABI publishing, New York, USA.CrossRefGoogle Scholar
Hovinen, M, Aisla, A-M, Pyörälä, S 2006. Accuracy and reliability of mastitis detection with electrical conductivity and milk colour measurement in automatic milking. Acta Agriculturae Scandinavica, Section A – Animal Sciences 56, 121127.Google Scholar
Huzzey, JM, DeVries, TJ, Valois, P, von Keyserlingk, MAG 2006. Stocking density and feed barrier design affect the feeding and social behaviour of dairy cattle. Journal of Dairy Science 89, 126133.CrossRefGoogle ScholarPubMed
Jackson, F, Coop, RL 2000. The development of anthelmintic resistance in sheep nematodes. Parasitology 120, S95S107.CrossRefGoogle ScholarPubMed
Johnson, HD, Vanjonack, WJ 1976. Effects of environmental and other stressors on blood hormone patterns in lactating animals. Journal of Dairy Science 59, 16031617.CrossRefGoogle ScholarPubMed
Kehoe, SI, Dechow, CD, Heinrichs, AJ 2007. Effects of weaning age and milk feeding frequency on dairy calf growth, health and rumen parameters. Livestock Science 110, 267272.CrossRefGoogle Scholar
Kjeldsen, AN, Thøgersen, R, Enemark, PS 1999. Økologisk køer på lavere foderniveau. Lkmeddelsenr, 341. Landskontoret for Kvæg, Skejby.Google Scholar
Klenke, B 1989. Investigations on cattle herds under different types of management with special reference to milk yield, health and fertility. PhD Thesis, Tierarztliche Hochschule Hanover, Germany.Google Scholar
Klocke, P, Ivemeyer, S, Walkenhorst, M, Maeschli, A, Heil, F 2006. Handling the dry-off problem in organic dairy herds by teat sealing or homeopathy compared to therapy omission. In Proceedings of the European Joint Organic Congress, Odense, 2006, pp. 492, 493.Google Scholar
Knaus, WF, Steinwidder, A, Zollitsch, W 2001. Energy and protein balances in organic dairy cow nutrition – model calculations based on EU regulations. In Proceedings of the 4th NAHWOA Workshop, Wageningen, pp. 141–154.Google Scholar
Kristensen, T, Pedersen, S 2001. Organic dairy cow feeding with emphasis on Danish conditions. In Proceedings of the 4th NAHWOA Workshop (ed. M Hovi and T Baars), pp. 134140. University of Reading, Wageningen.Google Scholar
Krohn, CC 2001. Effects of different suckling systems on milk production, udder health, reproduction, calf growth and some behavioural aspects in high producing dairy cows – a review. Applied Animal Behaviour Science 72, 271280.CrossRefGoogle ScholarPubMed
Krohn, CC, Konggaard, SP 1979. Effects of isolating first-lactation cows from older cows. Livestock Production Science 6, 137146.CrossRefGoogle Scholar
Krutzinna, C, Boehncke, E, Hermann, HJ 1996. Organic milk production in Germany. Biological Agriculture and Horticulture 13, 351358.CrossRefGoogle Scholar
Larsen, M 1999. Biological control of helminths. International Journal for Parasitology 29, 139146.CrossRefGoogle ScholarPubMed
Larsson, A, Dimander, SO, Rydzik, A, Uggla, A, Waller, PJ, Hoglund, J 2006. A 3-year field evaluation of pasture rotation and supplementary feeding to control parasite infection in first-season grazing cattle – Effects on animal performance. Veterinary Parasitology 142, 197206.CrossRefGoogle ScholarPubMed
Laven, RA, Lawrence, KR 2006. An evaluation of the seasonality of veterinary treatments for lameness in UK dairy cattle. Journal of Dairy Science 89, 38583865.CrossRefGoogle ScholarPubMed
Lean, LJ, Westwood, CT, Playford, MC 2008. Livestock disease threats associated with intensification of pastoral dairy farming. New Zealand Veterinary Journal 56, 261269.CrossRefGoogle ScholarPubMed
Lee, MRF, Jones, EL, Moorby, JM, Humphries, MO, Theodorou, MK, MacRae, JC, Scollan, ND 2001. Production responses from lambs grazed on Lolium perenne selected for an elevated water-soluble carbohydrate concentration. Animal Research 50, 441449.CrossRefGoogle Scholar
Le Neindre, P 1993. Evaluating housing systems for veal calves. Journal Animal Science 71, 13451354.CrossRefGoogle ScholarPubMed
Livesey, CT, Marsh, C, Metcalf, JA, Laven, RA 2002. Hock injuries in cattle kept in straw yards or cubicles with rubber mats or mattresses. Veterinary Record 150, 677679.CrossRefGoogle ScholarPubMed
Lotthammer, KH, Wittkowski, G 1994. Fruchtbarkeit und Gesundheit der Rinder. Ulmer Verlag, Stuttgart.Google Scholar
Maller, CJ, Hemsworth, PH, Ng, KT, Jongman, EJ, Coleman, GJ, Arnold, NA 2005. The relationships between characteristics of milking sheds and the attitudes to dairy cows, working conditions, and quality of life of dairy farmers. Australian Journal of Agricultural Research 56, 363372.CrossRefGoogle Scholar
Manson, FJ, Leaver, JD 1988. The influence of dietary protein intake and of foot trimming on lameness in dairy cattle. Animal Production 47, 191199.Google Scholar
Marley, CL 2001. The potential use of alternative forages to control helminth parasites in sheep. PhD thesis, University of Wales, Aberystwyth.Google Scholar
Marley, CL, Barrett, J, Lampkin, NH, Cook, R, Keatinge, R 2003. The effects of birdsfoot trefoil (Lotus corniculatus) and chicory (Cichorium intybus) on parasite intensities and performance of lambs naturally-infected with helminth parasites. Veterinary Parasitology 112, 147155.CrossRefGoogle ScholarPubMed
Marley, CL, Fraser, MD, Fychan, R, Theobald, VJ, Jones, R 2005. Effect of forage legumes and anthelmintics treatment on the performance, nutritional status and nematode parasites of grazing lambs. Veterinary Parasitology 131, 267282.CrossRefGoogle ScholarPubMed
Marley, CL, Fraser, MD, Davies, DA, Rees, ME, Vale, JE, Forbes, AB 2006. The effect of mixed or sequential grazing of cattle and sheep on gastrointestinal parasites and growth rates of weaned lambs. Veterinary Parasitology 142, 134141.CrossRefGoogle ScholarPubMed
Marley, CL, Fraser, MD, Fisher, WJ, Forbes, AB, Jones, R, Moorby, JM, MacRae, JC, Theodorou, MK 2007a. The effects of continuous or rotational grazing of two perennial ryegrass varieties on the chemical composition of the forages and the performance of finishing lambs. Grass and Forage Science 62, 255264.CrossRefGoogle Scholar
Marley, CL, Fychan, R, Fraser, MD, Sanderson, R, Jones, R 2007b. Effects of feeding different ensiled forages on the productivity and nutrient-use efficiency of finishing lambs. Grass and Forage Science 62, 112.CrossRefGoogle Scholar
Mayne, CS, Newberry, RD, Woodcosk, SCF 1988. The effects of a flexible grazing management strategy and leader/follower grazing on the milk production of grazing dairy cows and on swards characteristics. Grass and Forage Science 43, 137150.CrossRefGoogle Scholar
MDC 1997. How to make sure your feeding systems doesn’t cause lameness. Milk Development Council Publication, London, 8 pp.Google Scholar
MDC 1999. Longevity report. Report 97/R1/12. Milk Development Council, Cirencester, UK.Google Scholar
Menke, C, Waiblinger, S, Studnitz, M, Bestman, M 2003. Mutilations in organic animal husbandry: dilemmas involving animal welfare, humans and environmental protection. In Animal Health and Welfare in Organic Agriculture (ed. M Vaarst, S Roderick, V Lund and W Lockeretz), p. 171. CABI Publishing, Oxon, UK.Google Scholar
Miller, K, Woodgush, DGM 1991. Some effects of housing on the social behaviour of dairy cows. Animal Production 53, 271278.Google Scholar
Miller, RH, Fulton, LA, Erez, B, Williams, WF, Pearson, RE 1995. Variation in distances among teats of Holstein cows: implications for automated milking. Journal of Dairy Science 78, 14561462.CrossRefGoogle ScholarPubMed
Moorby, JM, Esslemont, RJ, Jones, R 2003. A review of the effect of dairy breed and cross-breeding on fertility, health and longevity. Milk Development Council Report IS0213.Google Scholar
Mounier, L, Marie, M, Lensink, BJ 2007. Factors affecting the welfare of ruminants in livestock farming. Productions Animales 20, 6572.CrossRefGoogle Scholar
Napolitano, F, Pacelli, C, De Rosa, G, Braghieri, A, Girolami, A 2005. Sustainability and welfare of Podolian cattle. Livestock Production Science 92, 323331.CrossRefGoogle Scholar
Nicholas, P, Jasinska, A 2008. Animal health and welfare planning – a review. In Development of principles for animal health planning in organic dairy farms and assessing the use of health plans in the UK and Norway. Aberystwyth University, UK, 39 pp. Retrieved November 11, 2008, from http://aniplan.coreportal.org/gfx/Aniplan_samlet_low.pdfGoogle Scholar
Nielen, M, Spigt, MH, Schukken, YH, Deluyker, HA, Maatje, K, Brand, A 1995. Application of a neural network to analyse on-line milking parlour data for the detection of clinical mastitis in dairy cows. Preventive Veterinary Medicine 22, 1528.CrossRefGoogle Scholar
Nielsen, BL 1999. Perceived welfare issues in dairy cattle, with special emphasis on metabolic stress. In Metabolic stress in dairy cows (ed. JD Oldham, G Simm, AF Groen, BL Nielsen, JE Pryce and TLJ Lawrence). British Society of Animal Science occasional publication no. 24, pp. 1–8.CrossRefGoogle Scholar
Offer, JE, Fisher, GEJ, Kempson, SA, Logue, DN 2001. The effect of feeding grass silage in early pregnancy on claw health during first lactation. Veterinary Journal 161, 186193.CrossRefGoogle ScholarPubMed
Offer, JE, Leach, KA, Brocklehurst, S, Logue, DN 2003. Effect of forage type on claw horn lesion development in dairy heifers. Veterinary Journal 165, 221227.CrossRefGoogle ScholarPubMed
Olesen, I, Lindhardt, E, Ebbesvik, M 1999. Effects if calving season and sire’s breeding value in a dairy herd during conversion to ecological milk production. Livestock Production Science 61, 201211.CrossRefGoogle Scholar
Pastell, ME, Kujala, M 2007. A probabilistic neural network model for lameness detection. Journal of Dairy Science 90, 22832292.CrossRefGoogle ScholarPubMed
Peterse, DJ 1985. Breeding. In Cattle footcare and claw trimming (ed. E Toussaint-Raven, RT Halstra and DJ Peterse), pp. 121123. Farming Press, Ipswich, UK.Google Scholar
Petherick, JC, Phillips, CJC 2009. Space allowances for confined livestock and their determination from allometric principles. Applied Animal Behaviour Science 117, 112.CrossRefGoogle Scholar
Phillips, C 1993. Cattle behaviour. Farming Press Books, Ipswich, UK.Google Scholar
Pollott, GE, Coffey, MP 2008. The effect of genetic merit and production system on dairy cow fertility, measured using progesterone profiles and on-farm recording. Journal of Dairy Science 91, 36493660.CrossRefGoogle ScholarPubMed
Prayaga, KC 2007. Genetic options to replace dehorning in beef cattle – a review. Australian Journal of Agricultural Research 58, 18.CrossRefGoogle Scholar
Proudfoot, KL, Veira, DM, Weary, DM, von Keyserlingk, MAG 2009. Competition at the feed bunk changes the feeding, standing and social behaviour of transition dairy cows. Journal of Dairy Science 92, 31163123.CrossRefGoogle ScholarPubMed
Radostits, OM, Blood, DC 1985. Herd health. Saunders Co., Philadelphia, pp. 178180.Google Scholar
Reksen, O, Tverdal, A, Ropstad, E 1999. A comparative study of reproductive performance in organic and conventional dairy husbandry. Journal of Dairy Science 82, 26052610.CrossRefGoogle ScholarPubMed
Roberson, JR, Fox, LK, Hancock, DD, Gay, CC, Besser, TE 1994. Coagulase-positive Staphylococcus intra-mammary infections in primaparous dairy cows. Journal of Dairy Science 77, 958969.CrossRefGoogle Scholar
Roderick, S, Hovi, M 1999. Animal health and welfare in organic livestock systems: identification of constraints and priorities. MAFF Report for Project OF0172.Google Scholar
Roepstad, E, Larsen, HJ, Refsdal, AO 1989. Immune function in dairy cows related to negative energy balance and metabolic status in early lactation. Acta Veterinaria Scandinavica 30, 209219.CrossRefGoogle Scholar
Rowlands, GJ, Russell, AM, Williams, LA 1983. Effects of season, herd size, management system and veterinary practice on the lameness incidence in dairy cattle. Veterinary Record 113, 441445.CrossRefGoogle ScholarPubMed
Ruest, N 2002. The control of internal parasites in dairy cows. Part 2: Control strategies. Producteur de Lait Quebecois 23, 6465.Google Scholar
Rushen, J, De Passille, AM, Munksgaard, L 1999. Fear of people by cows and effects on milk yield, behavior and heart rate at milking. Journal of Dairy Science 82, 720727.CrossRefGoogle ScholarPubMed
Rutherford, KMD, Langford, FM, Jack, MC, Sherwood, L, Lawrence, AB, Haskell, MJ 2009. Lameness prevalence and risk factors in organic and non-organic dairy herds in the United Kingdom. The Veterinary Journal 180, 95105.CrossRefGoogle ScholarPubMed
Sandøe, P, Nielsen, BL, Christensen, LG, Sorensen, P 1999. Staying good while playing god – the ethics of breeding farm animals. Animal Welfare 8, 313328.CrossRefGoogle ScholarPubMed
Sato, K, Bartlett, PC, Erskine, RJ, Kaneene, JB 2005. A comparison of production and management between Wisconsin organic and conventional dairy herds. Livestock Production Science 92, 105115.CrossRefGoogle Scholar
Sehested, J, Kristensen, T, Soegaard, K 2003. Effect of concentrate supplementation level on production, health and efficiency in an organic dairy herd. Livestock Production Science 80, 153165.CrossRefGoogle Scholar
Seykora, AJ, McDaniel, BT 1985. Heritabilities of teat traits and their relationships with milk yield, somatic cell count, and percent 2-minute milk. Journal of Dairy Science 68, 26702683.CrossRefGoogle Scholar
Sharma, AK, Rodriguez, LA, Wilcox, CJ, Collier, RJ, Bachman, KC, Martin, FG 1988. Interactions of climatic factors affecting milk yield and composition. Journal of Dairy Science 71, 819825.CrossRefGoogle ScholarPubMed
Smith, KL, Todhunter, DA, Schoenberger, PS 1985. Environmental mastitis: cause, prevalence and prevention. Journal of Dairy Science 68, 15311553.CrossRefGoogle Scholar
Snijders, SEM, Dillon, P, Sreenan, J, Diskin, M, O’Callaghan, D, Boland, MP, O’Farrell, K 1997. Effect of genotype on follicular dynamics and subsequent reproductive performance. Irish Journal of Agricultural and Food Research 36, 96.Google Scholar
Stafford, KJ, Mellor, DJ 2005. Dehorning and disbudding stress and its alleviation in calves. Veterinary Journal 169, 337349.CrossRefGoogle Scholar
Stookey, JM, Goonewardene, LA 1996. A comparison of production traits and welfare implications between horned and polled beef bulls. Canadian Journal of Animal Science 76, 15.CrossRefGoogle Scholar
Tarr, B 2006. Cold stress in cows. Report by Ontario Ministry of Agriculture, Food and Rural Affairs, 4 pp.Google Scholar
Thomson, NA, Barnes, ML, Prestidge, R 1991. The effect of cow age and management on winter liveweight gain, liveweight at calving and subsequent effects on dairy production in a seasonal supply herd. Proceedings of the New Zealand Society of Animal Production 51, 277282.Google Scholar
Vaarst, M, Enevoldsen, C 1994. Patterns of clinical mastitis manifestations in Danish organic dairy herds. Journal of Dairy Research 64, 2337.CrossRefGoogle Scholar
Vaarst, M, Roderick, S, Lund, V, Lockeretz, W, Hovi, M 2004. Organic animal husbandry: the future challenges. In Animal health and welfare in organic agriculture (ed. M Vaarst, S Roderick, V Lund and W Lockeretz), pp. 389403. CABI Publishing, Wallingford, UK.CrossRefGoogle Scholar
Veerkamp, RF, Simm, G, Oldham, JD 1995. Genotype × environment interactions: experience from Langhill. In Breeding and feeding the high genetic merit dairy cow (ed. TLJ Lawrence, FJ Gordon and A Carson), pp. 59–66. British Society of Animal Science Occasional Publication No. 19.CrossRefGoogle Scholar
Vickers, KJ, Niel, L, Kiehlbauch, LM, Weary, DM 2005. Calf response to caustic paste and hot-iron dehorning using sedation with and without local anesthetic. Journal of Dairy Science 88, 14541459.CrossRefGoogle ScholarPubMed
Vliegher De, S, Laevens, H, Barkema, HW, Opsomer, G, Hemling, T, Kruif De, A 2003. Short-term effect of transition from conventional to automated milking on teat skin and teat end condition. Journal of Dairy Science 86, 16461652.CrossRefGoogle Scholar
Wagenaar, JPTM, Langhout, J 2007. Practical implications of increasing ‘natural living’ through suckling systems in organic dairy calf rearing. NJAS-Wageningen. Journal of Life Sciences 54, 375386.Google Scholar
Waiblinger, S, Menke, C, Coleman, G 2002. The relationship between attitudes, personal characteristics and behaviour of stockpeople and subsequent behaviour and production of dairy cows. Applied Animal Behaviour Science 79, 195219.CrossRefGoogle Scholar
Ward, WR, Hughes, JW, Faull, WB, Cripps, PJ, Sutherland, JP, Sutherst, JE 2002. Observational study of temperature, moisture, pH and bacteria in straw bedding, and faecal consistency, cleanliness and mastitis in four dairy herds. The Veterinary Record 151, 199206.CrossRefGoogle ScholarPubMed
Walsh, S, Buckley, F, Pierce, K, Byrne, N, Patton, J, Dillon, P 2008. Effects of breed and feeding system on milk production, body weight, body condition score, reproductive performance, and postpartum ovarian function. Journal of Dairy Science 91, 44014413.CrossRefGoogle ScholarPubMed
Weber, S, Pabst, K, Schulte-Coerne, H, Westphal, R, Gravert, HO 1993. Five year studies on conversion to organic milk production. 1. Production technology. Zuchtungskunde 65, 325337.Google Scholar
Webster, J 1993. Understanding the dairy cow. Blackwell Scientific Publications, Londonpp. 95103.Google Scholar
Webster, J 1994. Animal welfare – a cool eye towards Eden. Blackwell Science, Oxfordpp. 11781180.Google Scholar
Webster, AJF 2000. Sustaining fitness and welfare in the dairy cow. Proceedings of the New Zealand Society of Animal Production 60, 207213.Google Scholar
Webster, AJF, Chlumecky, J, Young, BA 1970. Effects of cold environments on the energy exchanges of young beef cattle. Canadian Journal of Animal Science 50, 89100.CrossRefGoogle Scholar
Weller, RF 1999. Animal production and performance indictaors at Ty Gwyn. Organic milk production: post-conversion phase. IGER Final Report to Ministry of Agriculture, Fisheries and Food (MAFF). Part 1: Scientific Report.Google Scholar
Weller, RF 2006. The development of organic milk production systems. Defra Final Report OF0317 2005/200. Retrieved August 8, 2008, from http://www2.defra.gov.uk/scienceproject_data/DocumentLibrary/OF0317/OF0317_4704_FRP.doc. Report published by IGER, Aberystywth, 20 pp.Google Scholar
Weller, RF, Davies, DWR 1998. Somatic cell counts and incidence of clinical mastitis in organic milk production. The Veterinary Record 143, 365366.CrossRefGoogle ScholarPubMed
Weller, RF, Bowling, PJ 1999. Animal health and welfare. Organic milk production: post-conversion phase. MAFF Final Report. Part 1: Scientific Report, pp. 75–90.Google Scholar
Weller, RF, Bowling, PJ 2000. Health status of dairy herds in organic farming. The Veterinary Record 146, 8081.CrossRefGoogle ScholarPubMed
Weller, RF, Cooper, A 2001. Seasonal changes in crude protein concentration of white clover/perennial ryegrass swards grown without fertiliser N in an organic farming system. Grass and Forage Science 56, 9295.CrossRefGoogle Scholar
Weller, RF, Bowling, PJ 2004. The performance and nutrient use efficiency of two contrasting systems of organic milk production. Biological Agriculture and Horticulture 22, 261270.CrossRefGoogle Scholar
Winter, KA 1985. Comparative performance and digestibility in dairy calves weaned at three, five and seven weeks of age. Canadian Journal of Animal Science 65, 445450.CrossRefGoogle Scholar
World Health Organisation (WHO) 1946. Constitution of the World Health Organization, adopted by the International Health Conference held in New York from 19 June to 22 July 1946, signed on 22 July 1946 by the representatives of 61 States (Off. Rec. Wld Hlth Org., 2, 100), and entered into force on 7 April 1948.Google Scholar
Wright, IA, Russel, AJF 1984. Partition of fat, body composition and body condition score in mature cows. Animal Production 38, 2332.Google Scholar