Acknowledgement
This manuscript is based on research supported by the National Institute of Animal Science (Rural Development Administration, Wanju, Republic of Korea; PJ009340).
References
- Johnston LJ. Feeding reproducing swine and neonatal pigs. In: Chiba LI, editor. Sustainable Swine Nutrition. 2nd ed: Wiley-Blackwell; 2022. p. 623-45. https://doi.org/10.1002/9781119583998.ch22
- Ji F, Wu G, Blanton Jr JR, Kim SW. Changes in weight and composition in various tissues of pregnant gilts and their nutritional implications. J Anim Sci 2005;83:366-75. https://doi.org/10.2527/2005.832366x
- Samuel RS, Moehn S, Pencharz PB, Ball RO. Dietary lysine requirement of sows increases in late gestation. J Anim Sci 2012;90:4896-904. https://doi.org/10.2527/jas.2011-4583
- Farmer C, Palin MF, Hovey RC, Falt TD, Huber LA. Dietary supplementation with lysine (protein) stimulates mammary development in late pregnant gilts. J Anim Sci 2022;100:skac051. https://doi.org/10.1093/jas/skac051
- Chung TK, Baker DH. Ideal amino acid pattern for 10-kilogram pigs. J Anim Sci 1992;70:3102-11. https://doi.org/10.2527/1992.70103102x
- NRC. Nutrient requirements of swine. 11th ed. Washington DC, USA: National Academies Press; 2012.
- Stein HH, Seve B, Fuller MF, Moughan PJ, De Lange CFM. Invited review: amino acid bioavailability and digestibility in pig feed ingredients: terminology and application. J Anim Sci 2007;85:172-80. https://doi.org/10.2527/jas.2005-742
- Rippel RH, Harmon BG, Jensen AH, Norton HW, Becker DE. Response of the gravid gilt to levels of protein as determined by nitrogen balance. J Anim Sci 1965;24:209-15. https://doi.org/10.2527/jas1965.241209x
- Duee PH, Rerat A. Etude du besoin en lysine de la truie gestante nullipare. Ann Zootech 1975;24:447-64. https://doi.org/10.1051/animres:19750310
- Woerman RL, Speer VC. Lysine requirement for reproduction in swine. J Anim Sci 1976;42:114-20. https://doi.org/10.2527/jas1976.421114x
- Dourmad JY, Etienne M. Dietary lysine and threonine requirements of the pregnant sow estimated by nitrogen balance. J Anim Sci 2002;80:2144-50. https://doi.org/10.1093/ansci/80.8.2144
- Sohail MA, Cole DJA, Lewis D. Amino acid requirements of the breeding sow: the dietary lysine requirement during pregnancy. Br J Nutr 1978;39:463-8. https://doi.org/doi.org/10.1079/BJN19780062
- Horwitz W, Latimer GW. AOAC International. Official methods of analysis of AOAC International. 18th ed. Gaithersburg, MD, USA: AOAC International; 2005.
- NRC. Nutrient Requirements of Swine: 10th 10 ed. Washington DC, USA: National Academies Press; 1998.
- Dourmad JY, Etienne M, Valancogne A, et al. InraPorc: a model and decision support tool for the nutrition of sows. Anim Feed Sci Technol 2008;143:372-86. https://doi.org/10.1016/j.anifeedsci.2007.05.019
- Flachowsky G, Staudacher W, Bedarfsnormen GfEAf. Recommendations for the supply of energy and nutrients to pigs: DLG-Verlag; 2008.
- Kim SW, Hurley WL, Wu G, Ji F. Ideal amino acid balance for sows during gestation and lactation. J Anim Sci 2009;87:E123-E32. https://doi.org/10.2527/jas.2008-1452
- Navales RAS, Dunn J, Htoo JK, et al. Efficiency of utilizing standardized ileal digestible lysine and threonine for whole-body protein retention in pregnant gilts during early, mid-, and late gestation1. J Anim Sci 2019;97:3016-26. https://doi.org/10.1093/jas/skz169
- Ramirez-Camba CD, Dunn JL, Htoo JK, et al. Efficiency of standardized ileal digestible lysine utilization for whole body protein deposition in pregnant gilts and sows during early-, mid-, and late-gestation. J Anim Sci 2020;98:skaa340. https://doi.org/10.1093/jas/skaa340
- McPherson RL, Ji F, Wu G, Blanton Jr JR, Kim SW. Growth and compositional changes of fetal tissues in pigs. J Anim Sci 2004;82:2534-40. https://doi.org/10.2527/2004.8292534x
- Ji F, Hurley WL, Kim SW. Characterization of mammary gland development in pregnant gilts. J Anim Sci 2006;84:579-87. https://doi.org/10.2527/2006.843579x
- Zhang RF, Hu Q, Li PF, et al. Effects of lysine intake during middle to late gestation (day 30 to 110) on reproductive performance, colostrum composition, blood metabolites and hormones of multiparous sows. Asian-Australas J Anim Sci 2011;24:1142-7. https://doi.org/10.5713/ajas.2011.10449
- Jang YD, Jang SK, Kim DH, Oh HK, Kim YY. Effects of dietary protein levels for gestating gilts on reproductive performance, blood metabolites and milk composition. Asian-Australas J Anim Sci 2014;27:83-92. https://doi.org/10.5713/ajas.2013.13369
- Shi M, Shi CX, Li YK, Li DF, Wang FL. Estimation of the standardized ileal digestible lysine requirement for primiparous pregnant sows. J Anim Physiol Anim Nutr 2016;100:287-93. https://doi.org/10.1111/jpn.12366
- Wu G, Bazer FW, Johnson GA, et al. Maternal and fetal amino acid metabolism in gestating sows. Soc Reprod Fertil Suppl 2013;68:185-98.
- Da Silva CLA, Van Den Brand H, Laurenssen BFA, et al. Relationships between ovulation rate and embryonic and placental characteristics in multiparous sows at 35 days of pregnancy. Animal 2016;10:1192-9. https://doi.org/10.1017/S175173 111600015X
- Thomas LL, Herd LK, Goodband RD, et al. Effects of increasing standardized ileal digestible lysine during gestation on reproductive performance of gilts and sows. Animal 2021;15:100221. https://doi.org/10.1016/j.animal.2021.100221
- Seoane S, De Palo P, Lorenzo JM, et al. Effect of Increasing dietary aminoacid concentration in late gestation on body condition and reproductive performance of hyperprolific sows. Animals 2020;10:99. https://doi.org/10.3390/ani10010099
- Shields Jr RG, Mahan DC, Maxson PF. Effect of dietary gestation and lactation protein levels on reproductive performance and body composition of first-litter female swine. J Anim Sci 1985;60:179-89. https://doi.org/10.2527/jas1985.601179x
- Mahan DC. Relationship of gestation protein and feed intake level over a five-parity period using a high-producing sow genotype. J Anim Sci 1998;76:533-41. https://doi.org/10.2527/1998.762533x
- Yang YX, Heo S, Jin Z, et al. Effects of lysine intake during late gestation and lactation on blood metabolites, hormones, milk composition and reproductive performance in primiparous and multiparous sows. Anim Reprod Sci 2009;112:199-214. https://doi.org/10.1016/j.anireprosci.2008.04.031
- Pere M-C, Etienne M. Uterine blood flow in sows: effects of pregnancy stage and litter size. Reprod Nutr Dev 2000;40:369-82. https://doi.org/10.1051/rnd:2000105
- Bérard J, Kreuzer M, Bee G. Effect of litter size and birth weight on growth, carcass and pork quality, and their relationship to postmortem proteolysis. J Anim Sci 2008;86:2357-68. https://doi.org/10.2527/jas.2008-0893
- Baker DH, Becker DE, Jensen AH, Harmon BG. Protein source and level for pregnant gilts: a comparison of corn, opaque-2 corn and corn-soybean meal diets. J Anim Sci 1970;30:364-7. https://doi.org/10.2527/jas1970.303364x
- Kusina J, Pettigrew JE, Sower AF, et al. Effect of protein intake during gestation and lactation on the lactational performance of primiparous sows. J Anim Sci 1999;77:931-41. https://doi.org/10.2527/1999.774931x
- Pettigrew JE, Yang H. Protein nutrition of gestating sows. J Anim Sci 1997;75:2723-30. https://doi.org/10.2527/1997.75102723x
- Heo S, Yang YX, Jin Z, et al. Effects of dietary energy and lysine intake during late gestation and lactation on blood metabolites, hormones, milk compositions and reproductive performance in primiparous sows. Can J Anim Sci 2008;88:247-55. https://doi.org/10.4141/CJAS07060
- Baker DH. Problems and pitfalls in animal experiments designed to establish dietary requirements for essential nutrients. J Nutr 1986;116:2339-49. https://doi.org/10.1093/jn/116.12.2339