Peter Singer-Animal Liberation

91. Farm Animal Welfare Council, Assessment of Pig
    ProductionSystems(FarmAnimalWelfareCouncil,Surbiton,
    Surrey, England, 1988), p. 6.

92.A.Lawrence,M.Appleby,andH.MacLeod,“Measuring
HungerinthePigUsingOperantConditioning:TheEffectof
Food Restriction,”Animal Production47 (1988).

93.The Stall Street Journal, July 1972.

94. J. Webster, C. Saville, and D. Welchman, “Improved
    HusbandrySystemsforVealCalves,”AnimalHealthTrust
    andFarmAnimalCareTrust,nodate,p.5;seealsoWebster
    et al., “The Effect of Different Rearing Systems on the
    Development of Calf Behavior,” and “Some Effects of
    DifferentRearingSystemsonHealth,CleanlinessandInjury
    in Calves,” British Veterinary Journal 1141: 249 and 472
    (1985).


95. J. Webster, C. Saville, and D. Welchman, “Improved
    Husbandry Systems for Veal Calves,” p. 6.


96. J. Webster, C. Saville, and D. Welchman, “Improved
    Husbandry Systems for Veal Calves,” p. 2.

97.The Stall Street Journal, November 1973.

98.The Stall Street Journal, April 1973.

99.The Stall Street Journal, November 1973.

100.FarmerandStockbreeder,September13,1960,quoted
by Ruth Harrison,Animal Machines, p. 70.