Crop volume of chickens as affected by body size, sex, and breed.
Single Comb White leghorn (SCWL) hens, broiler cockerels, and two weight classes of SCWL roosters were utilized to determine the relationships of breed, sex, and body size to crop volume. Crop volume was significantly different (P less than .05) among all types of birds examined. Significant differences (P less than .05) of crop volume per kilogram body weight occurred between birds of opposite sex within a breed and between birds of identical sex but differing breed. However, within a breed, birds of identical sex but differing body size exhibited similar crop volume (cc/kg body weight).
D000818:Animals; D001835:Body Weight; D002645:Chickens / Q000033:anatomy & histology* / Q000235:genetics; D003426:Crop, Avian / Q000033:anatomy & histology*; D004032:Diet; D005260:Female; D008297:Male; D009929:Organ Size; D012737:Sex Factors; D014908:Triticum