Sari, M. F., Tarsisius Considus Tophianong, Yohanes Timbun Raja Mangihut Ronael Simarmata and Heny Nitbani (2025) “Effects of litter size and piglet sex on gestation length in Landrace pigs”, Ovozoa: Journal of Animal Reproduction, 14(2), pp. 85–91. doi: 10.20473/ovz.v14i2.2025.85-91.