Eye-opening in kittens: Further comments

Eye‐opening in kittens: Effects of light and some biological factors

“…Our study has uncovered that light, mother's age, sex, and father's identity influence the timing of eye-opening. These factors add to the previously known factors-mother's identity (Warkentin & Smith, 1937) and eye-opening in the lutten's littermates (Illingworth, 1980;Warkentin & Smith, 1937). It i s apparent that the process of eye-opening is influenced by a complex relationship among a number of variables.…”

“…1A). , 1975;Fox, 1970;Hemmer, 1979;Illingworth, 1980;Kovar, 1968;Norton, 1974;Tilney & Casamajor, 1924;Villablanca & Olmstead, 1979;Warkentin & Smith, 1937).…”

“…This can hardly be explained by external environmental or genetic factors. It has been suggested that postconceptual age is more important for eye-opening than postnatal age (Illingworth, 1980). If so, the length of the gestation period should be compared in younger and older queens.…”