Ovarian follicular structure of White Leghorns fed ad libitum and dwarf and normal broiler breeders fed ad libitum or restricted until point of lay.

摘要: Abstract 1. Yellow follicle numbers when the first egg was laid were 6.3, 9.0 and 12.4 for ad libitum reared Leghorns, sex‐linked Dwarf (AL Dwarf) Normal broiler breeders respectively. Multiple ovulation resulted in low production a high proportion of defective shells AL during early lay. 2. Restricting growth rearing by restricting food intake (R Dwarfs) reduced number yellow follicles to 6.8 increased rate 3. Atretic common among but not Leghorns or R Dwarfs laid. 4. Poor older caused birds with few no developing follicles, atresia continued occurrence multiple ovulations. 5. There relationship between white less than 5 mm diameter 2 <5 negatively ...