Mammary growth and milk yield as related to litter size.
D000818:Animals; D000831:Animals, Newborn; D001835:Body Weight; D004247:DNA / Q000032:analysis; D005260:Female; D005298:Fertility; D007774:Lactation; D008321:Mammary Glands, Animal / Q000032:analysis / Q000254:growth & development*; D008722:Methods; D011247:Pregnancy; D051381:Rats
D004247:DNA