The effect of mating female rats at 35 or 80 days of age on pup production and maternal weight.
D000367:Age Factors; D000818:Animals; D001835:Body Weight; D004971:Estrus; D005260:Female; D008297:Male; D010298:Parity; D011247:Pregnancy; D051381:Rats / Q000254:growth & development / Q000502:physiology*; D012098:Reproduction