References
- Abell C.E, Mabry J.W., Dekkers J.C.M., Stalder K.J. (2012). Genetic and phenotypic relationships among reproductive and post-weaning traits fromacommercial swine breeding company. Livest. Sci., 145: 183-188.
- Fernàndezde Sevilla X., Fàbrega E., Tibau J., Casellas J. (2008). Effect of leg conformation on survivability in Duroc, Landrace and Large White sows. J. Anim. Sci., 86: 2392-2400.
- Flisar T., Malovrh Š., Urankar J., Kovač M. (2012). Effect of gilt growth rate and backfat thickness on reproductive performance. Proc. 20th International Symposium “Animal Science Days”, 19-21.09.2012, Kranjska Gora, Slovenia, pp. 199-203.
- Gill P. (2007). Nutritional management of the gilt for lifetime productivity - feeding for fitness or fatness? Proc. London Swine Conference, 3-4.04.2007, London, Ontario, pp. 83-99.
- Hoge M.D., Bates R.O. (2011). Developmental factors that influence sow longevity. J. Anim. Sci., 89: 1238-1245.
- Holm B., Bakken M., Klemetsdal G., Vangen O. (2004). Genetic correlations between reproduction and production traits in swine. J. Anim. Sci., 82: 3458-3464.
- Johnson Z.B., Nugent R.A. (2008). Relationships between performance test traits and lifetime productivity traits in four breeds of swine. Ark. Agri. Exp. Sta. Res., Series, 563: 122-125. Knauer M., Stalder K.J., Serenius T., Baas T.J., Berger P.J., Karriker L., Good - win R.N., Johnson R.K., Mabry J.W., Miller R.K., Robinson O.W., Tokach M.D. (2010). Factors associated with sow stayability in 6 genotypes. J. Anim. Sci., 88: 3486-3492.
- Lewis C.R.G., Bunter K.L. (2011). Body development in sows, feed intake and maternal capacity. Part 1: performance, pre-breeding and lactation feed intake traits of primiparous sows. Animal, 5: 1843-1854.
- López- Serrano M., Reinsch N., Looft H., Kalm E. (2000). Genetic correlations of growth, backfat thickness and exterior with stayability in large white and landrace sows. Livest. Prod. Sci., 64: 121-131.
- Lucia T., Dial G.D., Marsh W.E. (2000). Lifetime reproductive performance in female pigs having distinct reasons for removal. Livest. Prod. Sci., 63: 213-222.
- Rencher A.C. (2002). Methods of Multivariate Analysis. New York, John Wiley and Sons, 2nd ed.
- Rozeboom D.W., Pettigrew J.E., Moser R.L., Cornelius S.G., Kandelgy S.M. (1996). Influence of gilt age and body composition at first breeding on sow reproductive performance and longevity. J. Anim. Sci., 74: 138-150.
- Serenius T., Stalder K.J. (2004). Genetics of length of productive life and lifetime prolificacy in the Finish Landrace and Large White pig populations. J. Anim. Sci., 82: 3111-3117.
- Serenius T., Stalder K.J. (2007). Length of productive life of crossbred sows is affected by farm management, leg conformation, sow’s own prolificacy, sow’s origin parity and genetics. Animal, 1: 745-750.
- Serenius T., Stalder K.J., Baas T.J., Mabry J.W., Goodwin R.N., Johnson R.K., Ro - bison O.W., Tokach M., Miller R.K. (2006). National Pork Producers Council Maternal Line National Genetic Evaluation Program: Acomparison of sow longevity and trait associations with sow longevity. J. Anim. Sci., 84: 2590-2595.
- Stalder K.J., Knauer M., Baas T.J., Rothschild M.F., Mabry J.W. (2004). Sow longevity. Pig News and Information, 25: 53N-74N.
- Stalder K.J., Saxton M., Conaster G.M., Serenius T.V. (2005). Effect of growth and compositional traits on first parity and lifetime reproductive performance in U.S. Landrace sows. Livest. Prod. Sci., 97: 151-159.
- Tarrés J., Tibau J., Piedrafita J., Fàbrega E., Reixach J. (2006 a). Factors affecting longevity in maternal Duroc swine lines. Livest. Sci., 100: 121-131.
- Tarrés J., Bidanel J.P., Hofer A., Ducrocq V. (2006 b). Analysis of longevity and exterior traits on Large White sows in Switzerland. J. Anim. Sci., 84: 2914-2924.
- Tholen E., Bunter K.L., Hermesch S., Graser H.U. (1996). The genetic foundation of fitness and reproduction traits in Australian pig populations. 2. Relationships between weaning to conception interval, farrowing interval, stayability and other common reproduction and production traits. Aust. J. Agric. Res., 47: 1275-1290.
- Tummaruk P., Lundeheim N., Einarsson S., Dalin A.M. (2001). Effect of birth litter size, birth parity number, growth rate, backfat thickness and age at first mating of gilts on their reproductive performance as sows. Anim. Reprod. Sci., 66: 225-237.
- Yazdi M.H., Rydhmer L., Rindgmar - Cederberg E., Lundeheim N., Johansson K. (2000). Genetic study of longevity in Swedish Landrace sows. Livest. Prod. Sci., 63: 255-264.