Effects of interrupting cat mothers' lactation with bromocriptine on the subsequent play of their kittens
Abstract This study examined the effects of simulating certain aspects of early weaning on the development of play in kittens. A single injection of bromocriptine was used to interrupt the lactation of cat mothers at the beginning of the sixth week after the birth of their kittens. The mothers continued to show appropriate maternal behaviour. In the eighth week after birth, early-weaned kittens showed significantly higher frequencies of object play than controls. These results are similar to those from a previous study, where separation from the mother was used to simulate early weaning, and suggest a causal link between weaning and the manner in which play develops in kittens.