Impact of shearing sheep on feeding and behaviour during the pre-embarkment feedlot phase of live export
Lourdes-Angelica Aguilar A , Teresa Collins A B , Emma J. Dunston-Clarke A , Sarah L. Wickham A , Patricia A. Fleming A and Anne L. Barnes A
+ Author Affiliations
- Author Affiliations
A School of Veterinary Medicine, Murdoch University, WA 6150, Australia.
B Corresponding author. Email: t.collins@murdoch.edu.au
Animal Production Science 60(7) 936-943 https://doi.org/10.1071/AN19238
Submitted: 5 May 2019 Accepted: 4 September 2019 Published: 30 March 2020
Abstract
Context: Shearing is a management procedure that can induce stress, and is one that sheep often undergo on-farm and/or at registered premises during the pre-embarkation phase of live export.
Aim: As inanition is one of the largest causes of death during sea transport and can result from sheep experiencing stress, whether shearing results in behavioural changes and stress before boarding a vessel needs to be determined.
Methods: A total of 600 merino wethers sourced from one farm were housed at registered pre-embarkment premises, where they were split between two adjacent pens. The wethers were further split into the six treatment groups (unshorn, and sheep shorn on Days 1, 2, 3, 4 or 5) with 50 sheep per treatment, per pen. All wethers were fitted with radio frequency identification tags that were used to record animal presence at feed and water troughs, and coloured ear tags to visually identify their treatment group. Temperature and humidity sensors were placed on the outside of each pen to record environmental conditions throughout the 13-day study. Body condition scores for each wether were recorded at the beginning and end of the study. Four portable cameras were placed at a corner of each pen, allowing behaviour states (standing, lying or locomotion) of the wethers to be recorded on Days 1, 2, 3, 4, 5 and 13 of the study.
Key results: Shorn treatment groups were observed to spend more time standing (F5,5 = 6.63, P = 0.029) and less time lying (F23,23 = 2.48, P = 0.017). The control group spent more time at water troughs from Day 4 to 12 (F5,55 = 3.98, P < 0.01), whereas all groups were recorded as spending more time at the feed trough on Day 5 (F5,55 = 2.78, P < 0.001).
Conclusions: A lack of variation in behavioural states between the treatments and no change in time spent feeding throughout the study suggest that the procedure of shearing within the first 5 days at the pre-embarkation facility had no impact on behaviour of these sheep.
Implications: These results assist the industry in ensuring best management practices are implemented.
Additional keywords: animal behaviour, animal transport, feeding behaviour.
References
Adzitey F (2011) Effect of pre-slaughter animal handling on carcass and meat quality. International Food Research Journal 18, 485–491.Al-Ramamneh D, Gerken DM, Riek A (2011) Effect of shearing on water turnover and thermobiological variables in German blackhead mutton sheep. Journal of Animal Science 89, 4294–4304.
| Effect of shearing on water turnover and thermobiological variables in German blackhead mutton sheep.Crossref | GoogleScholarGoogle Scholar | 21788433PubMed |
Aleksiev Y (2008) Effect of shearing on some physiological responses in lactating ewes kept indoor. Bulgarian Journal of Agricultural Science 14, 417–423.
Baldock NM, Sibly RM (1990) Effects of handling and transportation on the heart rate and behaviour of sheep. Applied Animal Behaviour Science 28, 15–39.
| Effects of handling and transportation on the heart rate and behaviour of sheep.Crossref | GoogleScholarGoogle Scholar |
Barnes A, Wickham SL, Miller D, Fleming PA, Collins T, Stockman C (2013) Inanition tracking in pre-embarkation feedlots. In ‘Proceedings of the Australian Sheep Veterinarians Annual Conference’, 1 August 2013, Albany, Australia. (The Australian Veterinary Association: Adelaide)
Barnes A, Wickham SL, Admiraal R, Miller DW, Collins T, Stockman C, Fleming PA (2018) Characterization of inappentant sheep in a feedlot using radio tracking technology. Journal of Animal Science 96, 902–911.
| Characterization of inappentant sheep in a feedlot using radio tracking technology.Crossref | GoogleScholarGoogle Scholar | 29378034PubMed |
Beatty DT, Barnes A, Fleming PA, Taylor E, Maloney SK (2008) The effect of fleece on core and rumen temperature in sheep. Journal of Thermal Biology 33, 437–443.
| The effect of fleece on core and rumen temperature in sheep.Crossref | GoogleScholarGoogle Scholar |
Bradshaw RH, Hall SJG, Broom DM (1996) Behavioural and cortisol response of pigs and sheep during transport. The Veterinary Record 138, 233–234.
| Behavioural and cortisol response of pigs and sheep during transport.Crossref | GoogleScholarGoogle Scholar | 8686140PubMed |
Champion RA, Rutter SM, Penning PD (1997) An automatic system to monitor lying, standing and walking behaviour of grazing animals. Applied Animal Behaviour Science 54, 291–305.
| An automatic system to monitor lying, standing and walking behaviour of grazing animals.Crossref | GoogleScholarGoogle Scholar |
Chapple RS, Wodzicka-Tomaszewska M, Lynch JJ (1987) The learning behaviour of sheep when introduced to wheat. I. Wheat acceptance by sheep and the effect of trough familiarity. Applied Animal Behaviour Science 18, 157–162.
| The learning behaviour of sheep when introduced to wheat. I. Wheat acceptance by sheep and the effect of trough familiarity.Crossref | GoogleScholarGoogle Scholar |
Cockram MS (2004) A review of behavioural and physiological responses of sheep to stressors to identify potential behavioural signs of distress. Animal Welfare (South Mimms, England) 13, 283–291.
Cockram MS, Kent JE, Goddard PJ, Waran NK, McGilp IM, Jackson RE, Muwanga GM, Prytherch S (1996) Effect of space allowance during transport on the behavioural and physiological responses of lambs during and after transport. Animal Science 62, 461–477.
| Effect of space allowance during transport on the behavioural and physiological responses of lambs during and after transport.Crossref | GoogleScholarGoogle Scholar |
Collins T, Hampton JO, Barnes AL (2018) A systematic review of heat load in Australian livestock transported by sea. Animals (Basel) 8, 164
| A systematic review of heat load in Australian livestock transported by sea.Crossref | GoogleScholarGoogle Scholar |
Department of Agriculture, Fisheries and Forestry (2011) Australian standard for the export of livestock (Version 2.3) and Australian position statement on the export of livestock. Department of Agriculture, Fisheries and Forestry, Canberra, ACT, Australia.
Department of Agriculture (2018) ‘All livestock exports.’ Available at http://www.agriculture.gov.au/export/controlled-goods/live-animals/live-animal-export-statistics/livestock-exports-by-market [Verified 1 August 2018]
Department of Primary Industries and Regional Development (2017) ‘Condition scoring of sheep.’ Available at https://www.agric.wa.gov.au/management-reproduction/condition-scoring-sheep [Verified 10 August 2018]
Dikmen S, Orman A, Ustuner H (2011) The effect of shearing in a hot environment on some welfare indicators in Awassi lambs. Tropical Animal Health and Production 43, 1327–1335.
| The effect of shearing in a hot environment on some welfare indicators in Awassi lambs.Crossref | GoogleScholarGoogle Scholar | 21505961PubMed |
Fazio E, Medica P, Cravana C, Ferlazzo A (2016) Pituitary-adrenal axis responses to routine management procedures in sheep (Ovis aries). Acta Scientiae Veterinariae 44, 1–7.
Ferguson D, Warner RD (2008) Have we underestimated the impact of pre-slaughter stress on meat quality in ruminants? Meat Science 80, 12–19.
| Have we underestimated the impact of pre-slaughter stress on meat quality in ruminants?Crossref | GoogleScholarGoogle Scholar | 22063165PubMed |
Hargreaves AL, Hutson GD (1990a) Changes in heart rate, plasma cortisol and haematocrit of sheep during a shearing procedure. Applied Animal Behaviour Science 26, 91–101.
| Changes in heart rate, plasma cortisol and haematocrit of sheep during a shearing procedure.Crossref | GoogleScholarGoogle Scholar |
Hargreaves AL, Hutson GD (1990b) An evaluation of the contribution of isolation, up-ending and wool removal to the stress response to shearing. Applied Animal Behaviour Science 26, 103–113.
| An evaluation of the contribution of isolation, up-ending and wool removal to the stress response to shearing.Crossref | GoogleScholarGoogle Scholar |
Hargreaves AL, Hutson GD (1990c) The stress response in sheep during routine handling procedures. Applied Animal Behaviour Science 26, 83–90.
| The stress response in sheep during routine handling procedures.Crossref | GoogleScholarGoogle Scholar |
Hefnawy A, Helal MAY, Sabek A, Shousha S (2018) Clinical, behavioral and biochemical alterations due to shearing stress in Ossimi sheep. The Journal of Veterinary Medical Science 80, 1281–1286.
| Clinical, behavioral and biochemical alterations due to shearing stress in Ossimi sheep.Crossref | GoogleScholarGoogle Scholar | 29937463PubMed |
Keady TWJ, Hanrahan JP (2015) Effects of shearing, forage type and feed value, concentrate feed level, and protein concentration on the performance of housed finishing lambs. Journal of Animal Science 93, 306–318.
| Effects of shearing, forage type and feed value, concentrate feed level, and protein concentration on the performance of housed finishing lambs.Crossref | GoogleScholarGoogle Scholar |
Klemm GH (1962) The reactions of unshorn and shorn sheep to hot wet and hot dry atmospheres. Australian Journal of Agricultural Research 13, 472–478.
| The reactions of unshorn and shorn sheep to hot wet and hot dry atmospheres.Crossref | GoogleScholarGoogle Scholar |
Lauber M, Nash JA, Gatt A, Hemsworth PH (2012) Prevalence and incidence of abnormal behaviours in individually housed sheep. Animals (Basel) 2, 27–37.
| Prevalence and incidence of abnormal behaviours in individually housed sheep.Crossref | GoogleScholarGoogle Scholar | 26486774PubMed |
Lees AM, Lees JC, Sejian V, Gaughan J (2017) Management Strategies to Reduce Heat Stress in Sheep. In ‘Sheep Production Adapting to Climate Change’. (Eds V Sejian, R Bhatta, J Gaughan, PK Malik, SMK Naqvi, R Lal.) pp. 349–370. (Springer Singapore: Singapore)
Maunsell Australia Pty Ltd (2003) Development of a heat stress risk management model: Final report (LIVE.116). Meat and Livestock Australia, Brisbane, Queensland, Australia.
McCarthy M (2005) ‘Pilot monitoring of shipboard environmental conditions and animal performance (LIVE.223).’ (Meat & Livestock Australia: Sydney)
McClelland BE (1991) Courtship and agonistic behavior in mouflon sheep. Applied Animal Behaviour Science 29, 67–85.
| Courtship and agonistic behavior in mouflon sheep.Crossref | GoogleScholarGoogle Scholar |
Mears GJ, Brown FA, Redmond LR (1999) Effects of handling, shearing and previous exposure to shearing on cortisol and β-endorphin responses in ewes. Canadian Journal of Animal Science 79, 35–38.
| Effects of handling, shearing and previous exposure to shearing on cortisol and β-endorphin responses in ewes.Crossref | GoogleScholarGoogle Scholar |
Meat Livestock Australia (2017) ‘Australian livestock exports.’ Available at https://www.mla.com.au/globalassets/mla-corporate/prices–markets/documents/trends–analysis/livelink/australia—livestock-exports—global-summary—1812.pdf [Verified 30 July 2017]
Messori S, Pedernera-Romano C, Magnani D, Rodriguez P, Barnard S, Dalmau A, Velarde A, Dalla Villa P (2015) Unloading or not unloading? Sheep welfare implication of rest stop at control post after a 29h transport. Small Ruminant Research 130, 221–228.
| Unloading or not unloading? Sheep welfare implication of rest stop at control post after a 29h transport.Crossref | GoogleScholarGoogle Scholar |
Miranda-de la Lama GC, Villarroel M, María GA (2012) Behavioural and physiological profiles following exposure to novel environment and social mixing in lambs. Small Ruminant Research 103, 158–163.
| Behavioural and physiological profiles following exposure to novel environment and social mixing in lambs.Crossref | GoogleScholarGoogle Scholar |
Molony V, Kent JE (1997) Assessment of acute pain in farm animals using behavioral and physiological measurements. Journal of Animal Science 75, 266–272.
| Assessment of acute pain in farm animals using behavioral and physiological measurements.Crossref | GoogleScholarGoogle Scholar | 9027575PubMed |
Moslemipur F, Golzar-Adabi S (2017) Physiological and growth parameters of fattening lambs after shearing under heat-stress conditions. Animal Production Science 57, 569–575.
| Physiological and growth parameters of fattening lambs after shearing under heat-stress conditions.Crossref | GoogleScholarGoogle Scholar |
Mounier L, Veissier I, Andanson S, Delval E, Boissy A (2006) Mixing at the beginning of fattening moderates social buffering in beef bulls. Applied Animal Behaviour Science 96, 185–200.
| Mixing at the beginning of fattening moderates social buffering in beef bulls.Crossref | GoogleScholarGoogle Scholar |
Naglaa MM, Emeash HH, El-Bably MA, Safa Nadi A (2012) Stress resulting of management practices on sheep herds. Egyptian Journal of Sheep and Goats Sciences 7, 1–10.
| Stress resulting of management practices on sheep herds.Crossref | GoogleScholarGoogle Scholar |
Norris RT, Richards RB (1989) Deaths in sheep exported by sea from Western Australia – analysis of ship Master’s reports. Australian Veterinary Journal 66, 97–102.
| Deaths in sheep exported by sea from Western Australia – analysis of ship Master’s reports.Crossref | GoogleScholarGoogle Scholar | 2730480PubMed |
Norris RT, Richards RB, Dunlop RH (1989a) An epidemiological study of sheep deaths before and during export by sea from Western Australia. Australian Veterinary Journal 66, 276–279.
| An epidemiological study of sheep deaths before and during export by sea from Western Australia.Crossref | GoogleScholarGoogle Scholar | 2818370PubMed |
Norris RT, Richards RB, Dunlop RH (1989b) Pre-embarkation risk factors for sheep deaths during export by sea from Western Australia. Australian Veterinary Journal 66, 309–314.
| Pre-embarkation risk factors for sheep deaths during export by sea from Western Australia.Crossref | GoogleScholarGoogle Scholar | 2818357PubMed |
Norris RT, McDonald CL, Richards RB, Hyder MW, Gittins SP, Norman GJ (1990) Management of inappetant sheep during export by sea. Australian Veterinary Journal 67, 244–247.
| Management of inappetant sheep during export by sea.Crossref | GoogleScholarGoogle Scholar | 2393370PubMed |
Paranhos da Costa MJR, da Silva RG, de Souza RC (1992) Effect of air temperature and humidity on ingestive behaviour of sheep. International Journal of Biometeorology 36, 218–222.
| Effect of air temperature and humidity on ingestive behaviour of sheep.Crossref | GoogleScholarGoogle Scholar |
Parer JT (1963) Wool length and radiant heating effects in sheep. The Journal of Agricultural Science 60, 141–144.
| Wool length and radiant heating effects in sheep.Crossref | GoogleScholarGoogle Scholar |
Parliament Senate Select Committee on Animal Welfare (1989) ‘Sheep husbandry.’ (Australian Government Publishing Service: Canberra)
Pascual-Alonso M, Miranda-de la Lama GC, Aguayo-Ulloa L, Villarroel M, Mitchell M, María GA (2017) Thermophysiological, haematological, biochemical and behavioural stress responses of sheep transported on road. Journal of Animal Physiology and Animal Nutrition 101, 541–551.
| Thermophysiological, haematological, biochemical and behavioural stress responses of sheep transported on road.Crossref | GoogleScholarGoogle Scholar | 27079447PubMed |
Rice M, Jongman EC, Borg S, Butler KL, Hemsworth PH (2016) Characterisation of shy-feeding and feeding lambs in the first week in a feedlot. Applied Animal Behaviour Science 179, 39–45.
| Characterisation of shy-feeding and feeding lambs in the first week in a feedlot.Crossref | GoogleScholarGoogle Scholar |
Richards RB, Norris RT, Dunlop RH, McQuade NC (1989) Causes of death in sheep exported live by sea. Australian Veterinary Journal 66, 33–38.
| Causes of death in sheep exported live by sea.Crossref | GoogleScholarGoogle Scholar | 2712765PubMed |
Romeyer A, Bouissou M-F (1992) Assessment of fear reactions in domestic sheep, and influence of breed and rearing conditions. Applied Animal Behaviour Science 34, 93–119.
| Assessment of fear reactions in domestic sheep, and influence of breed and rearing conditions.Crossref | GoogleScholarGoogle Scholar |
Sanger ME, Doyle RE, Hinch GN, Lee C (2011) Sheep exhibit a positive judgement bias and stress-induced hyperthermia following shearing. Applied Animal Behaviour Science 131, 94–103.
| Sheep exhibit a positive judgement bias and stress-induced hyperthermia following shearing.Crossref | GoogleScholarGoogle Scholar |
Schipp M (2013) The welfare of livestock transported by sea: Australia’s experience. Veterinary Journal (London, England) 196, 282–283.
| The welfare of livestock transported by sea: Australia’s experience.Crossref | GoogleScholarGoogle Scholar |
Sevi A, Taibi L, Albenzio M, Muscio A, Dell’aquila S, Napolitano F (2001) Behavioral, adrenal, immune, and productive responses of lactating ewes to regrouping and relocation. Journal of Animal Science 79, 1457–1465.
| Behavioral, adrenal, immune, and productive responses of lactating ewes to regrouping and relocation.Crossref | GoogleScholarGoogle Scholar | 11424682PubMed |
Smith GC, Grandin T, Firiend TH, Lay DJ, Swanson JC (2004) ‘Effect of transport on meat quality and animal welfare of cattle, pigs, horses, deer and poultry.’ Available at http://www.grandin.com/behaviour/effect.of.transport.html [Verified 1 August 2018]
StatSoft (2001) ‘Statistica 6 for Windows.’ (StatSoft Inc.: CA, USA)
Swanson JC, Morrow-Tesch J (2001) Cattle transport: historical, research, and future perspectives. Journal of Animal Science 79, E102
| Cattle transport: historical, research, and future perspectives.Crossref | GoogleScholarGoogle Scholar |
Syme LA, Elphick GR (1982) Heart-rate and the behaviour of sheep in yards. Applied Animal Ethology 9, 31–35.
| Heart-rate and the behaviour of sheep in yards.Crossref | GoogleScholarGoogle Scholar |
Thwaites CJ (1966) Fleece length and the reactions of sheep to wet and dry heat. Nature 211, 997–998.
| Fleece length and the reactions of sheep to wet and dry heat.Crossref | GoogleScholarGoogle Scholar | 5968327PubMed |
Vandenheede M, Bouissou MF, Picard M (1998) Interpretation of behavioural reactions of sheep towards fear-eliciting situations. Applied Animal Behaviour Science 58, 293–310.
| Interpretation of behavioural reactions of sheep towards fear-eliciting situations.Crossref | GoogleScholarGoogle Scholar |
Wemelsfelder F, Farish M (2004) Qualitative categories for the interpretation of sheep welfare: a review. Animal Welfare (South Mimms, England) 13, 261–268.
Wheeler JL, Reardon TF, Lambourne LJ, Lambourne LJ (1963) The effect of pasture availability and shearing stress on herbage intake of grazing sheep. Australian Journal of Agricultural Research 14, 364–372.
| The effect of pasture availability and shearing stress on herbage intake of grazing sheep.Crossref | GoogleScholarGoogle Scholar |
