title: Family variation of four year old white Plymouth Rock males to heat stress.
mesh_terms: D000367:Age Factors; D000704:Analysis of Variance; D000818:Animals; D001831:Body Temperature; D006358:Hot Temperature; D008297:Male; D009068:Movement; D011201:Poultry Diseases / Q000235:genetics*; D012661:Semen; D012737:Sex Factors; D013045:Species Specificity; D013312:Stress, Physiological / Q000235:genetics / Q000662:veterinary*