Frustration and production in purelines of chickens and their reciprocal crosses

Bareham, 1972, Effects of cages and semi-intensive deep litter pens on the behavior, adrenal response, and production in two strains of laying hens, Br. Vet. J., 128, 153, 10.1016/S0007-1935(17)37088-4 Duncan, 1970, Frustration in the fowl, 15 Hughes, 1974, The effect of environmental factors on activity, selected behavior patterns, and “fear” of fowls in cages and pens, Br. Poult. Sci., 15, 375, 10.1080/00071667408416121 Kramer, 1956, Extension of multiple range tests to group means with unequal numbers of replications, Biometrics, 12, 307, 10.2307/3001469 Phillips, 1966, Development of fear in chicks of two closely related genetic lines, Anim. Behav., 14, 84, 10.1016/S0003-3472(66)80014-3 Sefton, 1976, The interactions of cage size, cage level, social density, fearfulness, and production of single comb white leghorns, Poult. Sci., 55, 1922, 10.3382/ps.0551922 Siegel, 1962, Selection for body weight at eight weeks of age. 1. Short term response and heritabilities, Poult. Sci., 41, 954, 10.3382/ps.0410954 Snedecor, 1967, Statistical Methods, 594 Verplanck, 1957, A glossary of some terms used in the objective science of behavior, Psychol. Rev., 64, 1, 10.1037/h0045907