Effects of litter size, age of young, and parity on foster mother behaviour in Rattus norvegicus.
D000367:Age Factors; D000704:Analysis of Variance; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development*; D005260:Female; D006799:Housing, Animal; D007774:Lactation; D008425:Maternal Behavior; D009425:Nesting Behavior; D010298:Parity; D011247:Pregnancy; D051381:Rats