Rh. Mcgovern et al., INCREASED FEED ALLOCATION DOES NOT STIMULATE INCREASED OVARIAN DEVELOPMENT OR INCREASED EGG OUTPUT IN 54-WEEK-OLD BROILER BREEDER HENS, Canadian journal of animal science, 77(1), 1997, pp. 177-179
Fifty-four-week-old breeder hens were either feed restricted to meet t
arget weight or over-fed by 10 or 20 g daily for 8 wk. Overfeeding inc
reased body weight and breast muscle weight, but did not affect fat pa
d weight, ovary morphology or egg output. The consequences of over fee
ding old breeder hens are not as severe as has previously been reporte
d with young hens.