Analyses of mathematical models for Yangzhou geese egg-laying curves

High dietary energy decreased reproductive performance through increasing lipid deposition in Yangzhou geese at late laying stage

“…The egg production rate increased rapidly to peak level within several weeks at the start of laying in birds ( Grossman et al, 2000 ). High laying rate could maintain for approximately 2 mo and then started decrease ( Guo et al, 2019 ). The rapid decreasing laying rate would result in a low egg production performance in poultry ( Grossman and Koops, 2001 ).…”

The development rule of feathers and application of hair root tissue in sex identification of Yangzhou geese

“…The Yangzhou goose is China's first independently bred medium-sized goose breed that can be used for both eggs and meat ( Guo et al, 2019 ). Throughout ancient and modern times, little research has been conducted on the feather performance of Yangzhou goose breeds, leaving many gaps in this area.…”

The Effects of Three-way Cross Strategy on the Gander Reproductive Performance

“…Though more attention has been paid to the egg-laying performance of geese (Zhang et al, 2020;Gao et al, 2021;Guo et al, 2019;Zhu et al, 2017), the performance of ganders is more crucial such as sperm quality. The factors affecting sperm quality include ejaculate volume, sperm concentration and viability which determine to a great degree the hatchability and fertility (Lukaszewicz et al, 2003;Kowalczyk et al, 2012).…”