TY - CPAPER AU - H. Saito, Y. Koketsu TI - Lifetime efficiency and longevity of sows based on a difference in the number of pigs born alive between parity 1 and 2 in commercial herds T2 - Allen D. Leman Swine Conference DP - American Association of Swine Veterinarians DB - AASV Swine Information Library UR - https://www.aasv.org/library/swineinfo/ PY - 2009 DA - 2009/09/01 L1 - https://www.aasv.org/library/swineinfo/Content/LEMAN/2009/research/39-Saito.pdf SE - Recent Research Reports ER -