, day of pregnancy is reported relative to the day of ovulation; however, in species that undergo delayed implantation and have variable pregnancy lengths, like the red panda, day of pregnancy may be anchored to parturition date rather than breeding or
Jenna Lowe and Erin Curry
Edwina F Lawson, Christopher G Grupen, Mark A Baker, R John Aitken, Aleona Swegen, Charley-Lea Pollard, and Zamira Gibb
study: maternal lipid profile in early pregnancy and foetal growth . BMC Medicine 18 276. ( https://doi.org/10.1186/s12916-020-01730-7 ) Aitken RJ 1981 Aspects of delayed implantation in the roe deer (Capreolus capreolus) . Journal of Reproduction
Kirsten S Wilson, Desheng Li, Iain Valentine, Alan McNeilly, Simon Girling, Rengui Li, Yingmin Zhou, Lynn Vanhaecke, W Colin Duncan, and Jella Wauters
:1012748718150 ) 10.1023/A:1012748718150 Zhang H Li D Wang C Hull V 2009 Delayed implantation in giant pandas: the first comprehensive empirical evidence . Reproduction 138 979 – 986 . ( https://doi.org/10.1530/REP-09-0241 ) 10.1530/REP-09-0241