ComfortClassofferseach110kggrowing – m ² finishingpighousedat2.4 กับ beddinginกลุ่ม of12premiumwelfaretomeettheirbehaviouralneeds Conventionallyhousedเติบโต – m ² finishingpigsintheNetherlandsareallowed0.8, basedon0.035 BW0.667ExtraspaceofferedwithComfortClassisamajorfinancialbarriertointroducethissysteminpractice Inordertoestablishwhetherornotwelfareandperformancecouldbemaintainedwhilstreducingspaceallowance, a3 2 factorialtrialwasdesignedtocomparepigshousedat2.4 m ² 1.6 m ² หรือ 1.2 m ²ต่อ piginpensof29and58m² วิดีโอบันทึก skinandtaillesions, lamenessscoresandperformancewerecollectedduringreplicatesinvolving216pigseach สามResultsindicatethatpigshousedat2.4, m ² 1.6or1.2 ต่อ animalwouldbelyinginthekennelsfor62%, respectivelyandpigshousedat 54% and48% ofthetime (Po0.001)2.4 m ² spentmoretimeeatingthanthosehousedat1.2 m ² (and4.4%ofthetime 4.7%ตามลำดับ Po0.05) Pigshousedinthesmallpensspentlesstimeinthekennelandmoretimerootingthanthoseinthelargepens (53.0%vs.55.8% inkennel, P¼0.046;1.78%vs1.22%rooting, Po0.001) Pigshousedinthesmallpenshadlesstaillesionsandthosehousedatm ² tendedtohavelessskinlesionsontheirhindsthanthosehousedat1.2 m ² 2.4and1.6 ต่อหมู Dailyweightgainwashigherinthesmallthanthelargepens (823vs.797g/d, P¼0.003)และ higherat2.4and1.6 m ² than1.2 m ² (827and817vs.786g/d, P¼0.002)โดยรวม anincreaseingroupsizeandstockingdensitybothhadunfavourableeffectsonwelfareandperformance, evenatthesehighspaceallowances อย่างไรก็ตาม performancebenefitsfromhigherspaceallowancesdidnotcompensateforincreasesinhousingcosts
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