References
- AOAC (1995). Association of Official Analytical Chemists. Official Methods of Analysis. 16th Edition, Arlington VA, USA
- Bakke H., Vold E. (1975). Milk composition in lines of pigs selected for rate of gain and thickness of backfat. Acta Vet. Scand., Sec. A, Anim. Sci., 25: 325-329.
- Beyga K., Rekiel A. (2009). Effect of the backfat thickness of sows in late pregnancy on the composition of colostrum and milk. Arch. Anim. Breed., 52: 593-602.
- Beyga K., Rekiel A. (2010). The effect of the body condition of late pregnant sows on fat reserves at farrowing and weaning and on litter performance. Arch. Anim. Breed., 53: 50-64.
- Cozler Y., David C., Beaumal V., Hulin J.C., Neil M., Dourmad J.Y. (1998). Effect of the feeding level during rearing on performance of large white gilts. Part 1: Growth, reproductive performance and feed intake during the first lactation. Reprod. Nutr. Develop., 38: 363-375.
- Jezková D., Smrcková M. (1991). Changes in lipid level in the blood of pregnant sows. Vet. Med., 36: 599-606.
- Kandeh M., Park Y. W., Pond W.G., Young L.D. (1993). Milk cholesterol concentration in sows selected for three generations for high or low serum cholesterol. J. Anim. Sci., 71: 1100-1103.
- Mazur A., Stasiak A. (2006). Influence of raw fat impact in diet on the chemical composition and a profile of fatty acids of sows milk PL and Pulawska breeds (in Polish). Ann. UMCS, Sectio EE XXIV, 21: 147-154.
- Migdał W., Pieszka M., Barowicz T., Pietras M. (2003). Chemical composition of colostrum and milk of sows receiving CLA in feed. (In Polish). Med. Wet., 59: 327-330.
- Migdał W., Živkovič B., Fabian M. (2000). Chemical composition of colostrum and milk in lactation of sows. Biotechnol. Anim. Husb., 17: 31-38.
- Nutrient Requirements for Pigs (1993). Nutritional value of feeds. (In Polish). Omnitech Press, Warszawa, pp. 1-87.
- Rekiel A. (2002). Effect of different drying off methods on the level of fat reserves and production results in sows. (In Polish). Pr. hab., 246. Wyd. SGGW, pp. 1-99.
- Rekiel A. (2003). The chosen problems of physiology and productive of lactation of sow. (In Polish). Acta Scien. Polon., 2: 101-112.
- Revell D.K., Williams I.H., Mullan B.P., Ranford J.L., Smits R.J. (1998). Body composition at farrowing and nutrition during lactation affect the performance of primiparous sows: II. Milk composition, milk yield, and pig growth. J. Anim. Sci., 76: 1738-1743.
- SPSS 2006. User's Guide 12.0. SPSS Inc.
- Theil P., Jorgensen H., Jakobsen K. (2004). Energy and protein metabolism in lactating sows fed two levels of dietary fat. Liv. Prod. Sci., 89: 265-276.
- Walkiewicz A., Wielbo E., Kamyk P., Stasiak A. (1994). Effect of somatic development of gilts on the initial reproduction lactation ability and chemical composition of milk. (In Polish). Ann. UMCS, Sectio EE XII, 12: 81-87.
- Young M.G., Tokach M.D., Aherne F.X., Main R.G., Dritz S.S., Goodband R.D., Nelssen J.L. (2004). Comparison of three methods of feeding sows in gestation and the subsequent effects on lactation performance. J. Anim. Sci., 82: 3058-3070.
- žvorc Z., Mrljak V., Sušić V., Pompe Gotal J. (2006). Haematological and biochemical parameters during pregnancy and lactation in sows. Vet. Arhiv. 76: 245-253.