Benefits of using Double-Ovsynch versus presynch-ovsynch are affected by environmental heat in primiparous holstein lactating cows - Huazhao Li; Nan Sun; Yao Xiao; Hongzhen Yang; Zhigang Guo; Yuxin Lin; Xiaojie Wang; Qipeng Wu; Yang Zhou; Liguo Yang; Guohua Hua (Animal Reproduction Science, 2023)