Enables choline-phosphate cytidylyltransferase activity. Involved in CDP-choline pathway. Acts upstream of or within ovarian follicle development and spermatogenesis. Predicted to be located in endoplasmic reticulum. Is expressed in several structures, including alimentary system; heart; nervous system; respiratory system; and sensory organ. Orthologous to human PCYT1B (phosphate cytidylyltransferase 1B, choline). [provided by Alliance of Genome Resources, Apr 2022]