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Short-term behavioural effects of weaning age in outdoor-reared piglets

Published online by Cambridge University Press:  16 September 2009

M. J. Hötzel ,
L. C. P. Machado Filho ,
R. Irgang  and
L. Alexandre Filho
M. J. Hötzel*
Affiliation:
Laboratório de Etologia Aplicada, Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis, 88.034-001, SC, Brazil
L. C. P. Machado Filho
Affiliation:
Laboratório de Etologia Aplicada, Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis, 88.034-001, SC, Brazil
R. Irgang
Affiliation:
Núcleo de Pesquisa em Produção Animal, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis, 88.034-001, SC, Brazil
L. Alexandre Filho
Affiliation:
Núcleo de Pesquisa em Produção Animal, Universidade Federal de Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis, 88.034-001, SC, Brazil
*
†E-mail: mjhotzel@cca.ufsc.br
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Abstract

Age at weaning affects the behaviour of piglets weaned in conventional confined environments. The adaptation of piglets to this event, which exposes piglets to important stressors, has not been examined in detail in outdoor systems. The aim of this study was to compare the behaviour of piglets weaned at 3 or 4 weeks of age in an outdoor production system. Six replicates of four piglets born and raised outdoors, originated from different litters but previously acquainted, were weaned at the age of approximately 20 (D20) or 30 (D30) days in 36 m2 outdoor pens and offered high-quality diets. Their behaviour was recorded by direct visual observation during four consecutive days after weaning (days 1 to 4). Data were analysed by repeated measures ANOVA. An effect of weaning age was observed on feeding and rooting ( P < 0.01), and a day-by-weaning age interaction for escape attempts, vocalizing, walking and fighting ( P < 0.01), and playing ( P < 0.03). Compared to D30 piglets, D20 piglets showed a higher frequency of escape attempts on day 1, vocalized more during days 1 and 2, and walked more during days 1 to 3 ( P < 0.05). Feeding behaviour, on the other hand, was higher in D30 piglets on days 1 to 3 ( P < 0.05). On days 3 and 4, D30 piglets spent more time interacting with peers (playing and fighting; P < 0.05) and on day 4 were more active than D20 piglets ( P < 0.05). As previously reported in confined environments, age at weaning affected the behaviour of piglets raised on the outdoors system. Weaning appeared to be more stressful for the piglets at 3 than at 4 weeks of age. The impact of weaning age on welfare cannot be ignored, especially when outdoor breeding of pigs is proposed to address welfare concerns of the public.

Keywords

pighousingsocialingestivewelfare
Type
Full Paper
Information
animal , Volume 4 , Issue 1 , January 2010 , pp. 102 - 107
Copyright
Copyright © The Animal Consortium 2009

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References

Alexandre Filho, L 2002. Fatores nutricionais e de manejo que interferem na produção de suínos criados ao ar livre (Nutritional and management factors that influence the performance of outdoor reared pigs). MSc dissertation, Federal University of Santa Catarina, Brazil.Google Scholar
Altmann, J 1974. Observational study of behaviour: sampling methods. Behaviour 49, 227–265.CrossRefGoogle ScholarPubMed
Bøe, K 1993. The effect of age at weaning and post-weaning environment on the behavior of pigs. Acta agriculturæ Scandinavica. Section A, Animal Science 43, 173–180.Google Scholar
Bruininx, EMAM, Binnendijk, GP, van der Peet-Schwering, CMC, Schrama, JW, den Hartog, LA, Everts, H, Beynen, AC 2002. Effect of creep feed consumption on individual feed intake characteristics and performance of group-housed weanling pigs. Journal of Animal Science 80, 1413–1418.Google Scholar
Colson, V, Orgeur, P, Foury, A, Mormède, P 2006. Consequences of weaning piglets at 21 and 28 days on growth, behaviour and hormonal responses. Applied Animal Behaviour Science 98, 70–88.CrossRefGoogle Scholar
Cox, L, Cooper, J 2001. Observations on the pre- and post-weaning behaviour of piglets reared in commercial indoor and outdoor environments. Animal Science 72, 75–86.CrossRefGoogle Scholar
D’Eath, RB 2005. Socialising piglets before weaning improves social hierarchy formation when pigs are mixed postweaning. Applied Animal Behaviour Science 93, 199–211.CrossRefGoogle Scholar
Donaldson, TM, Newberry, RC, Špinka, M, Cloutier, S 2002. Effects of early play experience on play behaviour of piglets after weaning. Applied Animal Behaviour Science 79, 221–231.CrossRefGoogle Scholar
Dong, GZ, Pluske, JR 2007. The low feed intake in newly-weaned pigs: problems and possible solutions. Asian-Australasian Journal of Animal Science 20, 440–452.CrossRefGoogle Scholar
Dritz, SS, Owen, KQ, Nelssen, JL, Goodband, RD, Tokach, MD 1996. Influence of weaning age and nursery diet complexity on growth performance and carcass characteristics and composition of high-health status pigs from weaning to 109 kilograms. Journal of Animal Science 74, 2975–2984.CrossRefGoogle ScholarPubMed
Gonyou, HW, Beltranena, E, Whittington, DL, Patience, JF 1998. The behaviour of pigs weaned at 12 and 21 days of age from weaning to market. Canadian Journal of Animal Science 78, 517–523.CrossRefGoogle Scholar
Hötzel, MJ, Souza, GPP, Machado Filho, LCP, Irgang, R, Probst, R 2007. Estresse e reconhecimento de seres humanos em leitões recém desmamados (Stress and recognition of humans by recently weaned piglets). Biotemas 20, 91–98.Google Scholar
Hötzel, MJ, Machado Filho, LCP, Wolf, FM, Dalla Costa, OA 2004. Behaviour of sows and piglets reared in intensive outdoor or indoor systems. Applied Animal Behaviour Science 86, 27–39.CrossRefGoogle Scholar
Jarvis, S, Moinard, C, Robson, SK, Sumner, BEH, Douglas, AJ, Seckl, JR, Russell, JA, Lawrence, AB 2008. Effects of weaning age on the behavioural and neuroendocrine development of piglets. Applied Animal Behaviour Science 110, 166–181.CrossRefGoogle Scholar
Johnson, AK, Morrow-Tesch, JL, McGlone, JJ 2001. Behavior and performance of lactating sows and piglets reared indoors or outdoors. Journal of Animal Science 79, 2571–2579.CrossRefGoogle ScholarPubMed
Le Dividich, J, Sève, B 2000. Effects of underfeeding during the weaning period on growth, metabolism, and hormonal adjustments in the piglet. Domestic Animal Endocrinology 19, 63–74.Google Scholar
Leite, SA, Hötzel, MJ, Machado Filho, LCP, Martendal, A, Sommavilla, R, Batistella, FD, Dalla Costa, OA 2008. Desenvolvimento da relação mãe-filho em suínos (Ontogeny of the mother–young relationship in pigs). First Regional Latin-American Congress of the International Society for Applied Ethology, Montevideo, Uruguay.Google Scholar
Main, RG, Dritz, SS, Tokach, MD, Goodband, RD, Nelssen, JL 2004. Increasing weaning age improves pig performance in a multisite production system. Journal of Animal Science 82, 1499–1507.Google Scholar
Marion, J, Biernat, M, Thomas, F, Savary, G, Le Breton, Y, Zabielski, R, Le Huerou-Luron, I, Le Dividich, J 2002. Small intestine growth and morphometry in piglets weaned at 7 days of age. Effects of level of energy intake. Reproduction Nutrition Development 42, 339–354.CrossRefGoogle ScholarPubMed
Morgan, CA, Lawrence, AB, Chirnside, J, Deans, LA 2001. Can information about solid food be transmitted from one piglet to another? Animal Science 73, 471–478.CrossRefGoogle Scholar
Newberry, RC, Swanson, JC 2008. Implications of breaking mother–young social bonds. Applied Animal Behaviour Science 110, 3–23.CrossRefGoogle Scholar
Newberry, RC, Wood-Gush, DGM, Hall, JW 1988. Playful behaviour of piglets. Behavioural Processes 17, 205–216.Google Scholar
O’Connell, N, Beattie, V 1999. Influence of environmental enrichment on aggressive behaviour and dominance relationships in growing pigs. Animal Welfare 8, 269–279.CrossRefGoogle Scholar
O’Connell, NE, Beattie, VE, Sneddon, IA, Breuer, K, Mercer, JT, Rance, KA, Sutcliffe, MEM, Edwards, SA 2005. Influence of individual predisposition, maternal experience and lactation environment on the responses of pigs to weaning at two different ages. Applied Animal Behaviour Science 90, 219–232.CrossRefGoogle Scholar
Pajor, EA, Fraser, D, Kramer, DL 1991. Consumption of solid food by suckling pigs: individual variation and relation to weight gain. Applied Animal Behaviour Science 32, 139–155.Google Scholar
Pitts, A, Weary, DM, Pajor, EA, Fraser, D 2000. Mixing at young ages reduces fighting in unacquainted domestic pigs. Applied Animal Behaviour Science 68, 191–197.CrossRefGoogle ScholarPubMed
Poletto, R, Steibel, JP, Siegford, JM, Zanella, AJ 2006. Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11b-hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets. Brain Research 1067, 36–42.CrossRefGoogle ScholarPubMed
Špinka, M, Newberry, RC, Bekoff, M 2001. Mammalian play. Training for the unexpected. The Quarterly Review of Biology 76, 141–168.CrossRefGoogle ScholarPubMed
Sumner, BEH, D’Eath, RB, Farnworth, MJ, Robson, S, Russell, JA, Lawrence, AB, Jarvis, S 2008. Early weaning results in less active behaviour, accompanied by lower 5-HT1A and higher 5-HT2A receptor mRNA expression in specific brain regions of female pigs. Psychoneuroendocrinology 33, 1077–1092.CrossRefGoogle ScholarPubMed
Van de Weerd, HA, Docking, CM, Day, JEL, Edwards, SA 2005. The development of harmful social behaviour in pigs with intact tails and different enrichment backgrounds in two housing systems. Animal Science 80, 289–298.Google Scholar
Weary, DM, Fraser, D 1995. Signalling need: costly signals and animal welfare assessment. Applied Animal Behaviour Science 44, 159–169.CrossRefGoogle Scholar
Weary, DM, Fraser, D 1997. Vocal response to weaning: effect of piglet age. Applied Animal Behaviour Science 54, 153–160.CrossRefGoogle Scholar
Weary, DM, Ross, S, Fraser, D 1997. Vocalizations by isolated piglets: a reliable indicator of piglet need directed towards the sow. Applied Animal Behaviour Science 53, 249–257.CrossRefGoogle Scholar
Weary, DM, Lawson, GI, Thompson, BK 1996. Sows show stronger responses to isolation calls of piglets associated with greater levels of piglet need. Animal Behaviour 52, 1247–1253.CrossRefGoogle Scholar
Weary, DM, Jaspers, J, Hötzel, MJ 2008. Understanding weaning distress. Applied Animal Behaviour Science 110, 24–41.Google Scholar
Weary, DM, Appleby, M, Fraser, D 1999a. Responses of piglets to early separation from the sow. Applied Animal Behaviour Science 63, 289–300.CrossRefGoogle Scholar
Weary, DM, Pajor, EA, Bonenfant, M, Ross, SK, Fraser, D, Kramer, DL 1999b. Alternative housing for sows and litters: 2. Effects of a communal piglet area on pre- and post-weaning behaviour and performance. Applied Animal Behaviour Science 65, 123–135.CrossRefGoogle Scholar
Weary, DM, Pajor, EA, Bonenfant, M, Fraser, D, Kramer, DL 2002. Alternative housing for sows and litters: Part 4. Effects of sow-controlled housing combined with a communal piglet area on pre- and post-weaning behaviour and performance. Applied Animal Behaviour Science 76, 279–290.Google Scholar
Webster, S, Dawkins, MS 2000. The post-weaning behaviour of indoor-bred and outdoor-bred pigs. Animal Science 71, 265–271.CrossRefGoogle Scholar
Worobec, EK, Duncan, IJH, Widowski, TM 1999. The effects of weaning at 7, 14 and 28 days on piglet behaviour. Applied Animal Behaviour Science 62, 173–182.CrossRefGoogle Scholar