[1]

Dai F, Lin T, Huang X, Shi X, Yang Y, et al. 2023. Effects from supplementary feeding of bamboo powder in perinatal period on farrowing process, serum biochemical indexes, and fecal microbes of sows and offspring piglets. Frontiers in Microbiology 14:625

doi: 10.3389/fmicb.2023.1139625
[2]

Ison SH, Jarvis S, Hall SA, Ashworth CJ, Rutherford KMD. 2018. Periparturient behavior and physiology: further insight into the farrowing process for primiparous and multiparous sows. Frontiers in Veterinary Science 5:122

doi: 10.3389/fvets.2018.00122
[3]

Peltoniemi O, Yun J, Björkman S, Han T. 2021. Coping with large litters: the management of neonatal piglets and sow reproduction. Journal of Animal Science and Technology 63(1):1−15

doi: 10.5187/jast.2021.e3
[4]

Tuchscherer M, Puppe B, Tuchscherer A, Tiemann U. 2000. Early identification of neonates at risk: traits of newborn piglets with respect to survival. Theriogenology 54(3):371−338

doi: 10.1016/S0093-691X(00)00355-1
[5]

Mota-Rojas D, Martinez-Burnes J, Villanueva-Garcia D, Roldan-Santiago P, Trujillo-Ortega ME, et al. 2012. Animal welfare in the newborn piglet: a review. Veterinární Medicína 57(7):338−34

doi: 10.17221/6262-vetmed
[6]

Farmer C, Edwards S A. 2022. Improving the performance of neonatal piglets. Animal 16:100350

doi: 10.1016/j.animal.2021.100350
[7]

Tucker BS, Craig JR, Morrison RS, Smits RJ, Kirkwood RN. 2021. Piglet viability: A review of identification and pre-weaning management strategies. Animals 11(10):2902

doi: 10.3390/ani11102902
[8]

Langendijk P, Fleuren M, Van Hees H, van Kempen T. 2018. The course of parturition affects piglet condition at birth and survival and growth through the nursery phase. Animals 8(5):60

doi: 10.3390/ani8050060
[9]

Nagel C, Aurich C, Aurich J. 2019. Stress effects on the regulation of parturition in different domestic animal species. Animal Reproduction Science 207:153−16

doi: 10.1016/j.anireprosci.2019.04.011
[10]

Feyera T, Pedersen TF, Krogh U, Foldager L, Theil PK. 2018. Impact of sow energy status during farrowing on farrowing kinetics, frequency of stillborn piglets, and farrowing assistance. Journal of Animal Science 96(6):2320−2331

doi: 10.1093/jas/sky141
[11]

Campos-Rodríguez R, Godínez-Victoria M, Abarca-Rojano E, Pacheco-Yépez J, Reyna-Garfias H, et al. 2013. Stress modulates intestinal secretory immunoglobulin A. Frontiers in Integrative Neuroscience 7:86

doi: 10.3389/fnint.2013.00086
[12]

Cohen S, Miller GE, Rabin BS. 2001. Psychological stress and antibody response to immunization: a critical review of the human literature. Psychosomatic medicine 63(1):7−18

doi: 10.1097/00006842-200101000-00002
[13]

Volpe CMO, Villar-Delfino PH, dos Anjos PMF, Nogueira-Machado JA. 2018. Cellular death, reactive oxygen species (ROS) and diabetic complications. Cell death & disease 9(2):119

doi: 10.1038/s41419-017-0135-z
[14]

Vila R M, Tummaruk P. 2016. Management strategies in farrowing house to improve piglet pre-weaning survival and growth. The Thai Journal of Veterinary Medicin 46(3):347−35

doi: 10.56808/2985-1130.2748
[15]

Sabuncu A, Tek C, Bademkiran S, Kasikci G, Horoz Kaya H. 2008. Effect of beta adrenergic blocker carazolol on the duration of parturition in gilts. Indian Veterinary Journal 85:21−22

[16]

Meller KA, Całka J, Kaczmarek M, Jana B. 2018. Expression of alpha and beta adrenergic receptors in the pig uterus during inflammation. Theriogenology 119:96−104

doi: 10.1016/j.theriogenology.2018.06.025
[17]

Smith CA. 2010. Induction of parturition in swine. Theriogenology 2(1):61−54

[18]

Yun J, Swan KM, Vienola K, Kim YY, Oliviero C, et al. 2014. Farrowing environment has an impact on sow metabolic status and piglet colostrum intake in early lactation. Livestock Science 163:120−125

doi: 10.1016/j.livsci.2014.02.014
[19]

Olazábal DE. 2018. Role of oxytocin in parental behavior. Journal of Neuroendocrinology 30(7):e12594

doi: 10.1111/jne.12594
[20]

Wang J, Xiao TA, Fang BH, zheng GD, Wang YY, et al. 2011. Overview of the research on β-adrenergic receptor blocker - Carazolol. Progress in Animal Medicine 32(3):113−111

doi: 10.16437/j.cnki.1007-5038.2011.03.024
[21]

Kirkwood RN. 1999. Pharmacological intervention in swine reproduction. Swine Health and Production 7:29−35

[22]

Bostedt H, Rudloff P R. 1983. Prophylactic administration of the beta-blocker carazolol to influence the duration of parturition in sows. Theriogenology 20(2):191−196

doi: 10.1016/0093-691X(83)90214-5
[23]

Kirkden RD, Broom DM, Andersen IL. 2013. Piglet mortality: management solutions. Journal of Animal Science 91(7):3361−3389

doi: 10.2527/jas.2012-5637
[24]

Foisnet A, Farmer C, David C, Quesnel H. 2011. Farrowing induction induces transient alterations in prolactin concentrations and colostrum composition in primiparous sows. Journal of Animal Science 89(10):3048−3059

doi: 10.2527/jas.2010-3507
[25]

Oliviero C, Junnikkala S, Peltoniemi O. 2019. The challenge of large litters on the immune system of the sow and the piglets. Reproduction in Domestic Animals 54:12−21

doi: 10.1111/rda.13463
[26]

Constantin NT, Micsa C, Sipos A, Sandu A, Țolea IG, et al. 2021. Comparison between the efficiency of the parturition induction protocols in topigs tn 70 sows. Lucrări Ştiinţifice Medicină Veterinară 54:22−30

[27]

De Rensis F, Saleri R, Tummaruk P, Kirkwood RN. 2012. Prostaglandin F2α and control of reproduction in female swine: a review. Theriogenology 77(1):1−11

doi: 10.1016/j.theriogenology.2011.07.035
[28]

Cheng X, Zhang S, Zhan F, Jiao H, Zhang L, et al. 2023. The combined effects of season and parity on the reproductive performance of Large White pigs. Heilongjiang Animal Husbandry and Veterinary Medicine 24(24):35−41

doi: 10.13881/j.cnki.hljxmsy.2023.03.0141
[29]

Ju M, Wang X, Li X, Zhang M, Shi L, et al. 2021. Effects of litter size and parity on farrowing duration of Landrace × Yorkshire sows. Animals 12(1):94−95

doi: 10.3390/ani12010094
[30]

Mota-Rojas D, Martínez-Burnes J, Trujillo-Ortega ME, Alonso-Spilsbury ML, Ramírez-Necoechea R, et al. 2002. Effect of oxytocin treatment in sows on umbilical cord morphology, meconium staining, and neonatal mortality of piglets. American Journal of Veterinary Research 63(11):1571−1574

doi: 10.2460/ajvr.2002.63.1571
[31]

Björkman S, Oliviero C, Rajala-Schultz PJ, Soede NM, Peltoniemi OAT. 2017. The effect of litter size, parity and farrowing duration on placenta expulsion and retention in sows. Theriogenology 92:36−44

doi: 10.1016/j.theriogenology.2017.01.003
[32]

Björkman S, Oliviero C, Kauffold J, Soede NM, Peltoniemi OAT. 2018. Prolonged parturition and impaired placenta expulsion increase the risk of postpartum metritis and delay uterine involution in sows. Theriogenology 106:87−92

doi: 10.1016/j.theriogenology.2017.10.003
[33]

Tummaruk P, Sang-Gassanee K. 2013. Effect of farrowing duration, parity number and the type of anti-inflammatory drug on postparturient disorders in sows: a clinical study. Tropical Animal Health and Production 45:1071−1077

doi: 10.1007/s11250-012-0315-x
[34]

Andersson E, Frössling J, Engblom L, Algers B, Gunnarsson S. 2015. Impact of litter size on sow stayability in Swedish commercial piglet producing herds. Acta Veterinaria Scandinavica 58:31

doi: 10.1186/s13028-016-0213-8
[35]

Holdcroft A, Snidvongs S, Cason A, Doré CJ, Berkley KJ. 2003. Pain and uterine contractions during breast feeding in the immediate post-partum period increase with parity. Pain 104(3):589−596

doi: 10.1016/S0304-3959(03)00116-7
[36]

Ott S, Soler L, Moons CPH, Kashiha MA, Bahr C, et al. 2014. Different stressors elicit different responses in the salivary biomarkers cortisol, haptoglobin, and chromogranin A in pigs. Research in Veterinary Science 97(1):124−128

doi: 10.1016/j.rvsc.2014.06.002
[37]

Gómez-Laguna J, Gutiérrez A, Pallarés FJ, Salguero FJ, Cerón JJ, et al. 2010. Haptoglobin and C-reactive protein as biomarkers in the serum, saliva and meat juice of pigs experimentally infected with porcine reproductive and respiratory syndrome virus. The Veterinary Journal 185(1):83−87

doi: 10.1016/j.tvjl.2010.04.018
[38]

Piñeiro C, Piñeiro M, Morales J, Andrés M, Lorenzo E, et al. 2009. Pig-MAP and haptoglobin concentration reference values in swine from commercial farms. The Veterinary Journal 179(1):78−84

doi: 10.1016/j.tvjl.2007.08.010
[39]

Bahnsen I, Riddersholm KV, de Knegt LV, Bruun TS, Amdi C. 2021. The effect of different feeding systems on salivary cortisol levels during gestation in sows on herd level. Animals 11(4):1074

doi: 10.3390/ani11041074
[40]

Tantasuparuk W, Lundeheim N, Dalin AM, Kunavongkrit A, Einarsson S. 2000. Reproductive performance of purebred Landrace and Yorkshire sows in Thailand with special reference to seasonal influence and parity number. Theriogenology 54(3):481−496

doi: 10.1016/S0093-691X(00)00364-2
[41]

Martínez-Miró S, Tecles F, Ramón M, Escribano D, Hernández F, et al. 2016. Causes, consequences and biomarkers of stress in swine: an update. BMC Veterinary Research 12:171

doi: 10.1186/s12917-016-0791-8
[42]

Morgan L, Meyer J, Novak S, Younis A, Ahmad WA, et al. 2021. Shortening sow restraint period during lactation improves production and decreases hair cortisol concentrations in sows and their piglets. Animal 15(2):100082

doi: 10.1016/j.animal.2020.100082
[43]

van den Bosch M, Soede N, Kemp B, van den Brand H. 2023. Sow nutrition, uterine contractions, and placental blood flow during the peri-partum period and short-term effects on offspring. A review. Animals 13(5):910

doi: 10.3390/ani13050910
[44]

Van der Lende T, Van Rens B. 2003. Critical periods for foetal mortality in gilts identified by analysing the length distribution of mummified foetuses and frequency of non-fresh stillborn piglets. Animal Reproduction Science 75(1−2):141−150

doi: 10.1016/S0378-4320(02)00229-4
[45]

Orozco-Gregorio H, Mota-Rojas D, Alonso-Spilsbury M, Olmos-Hernandez A, Ramirez-Necoechea R et al. 2008. Short-term neurophysiologic consequences of intrapartum asphyxia in piglets born by spontaneous parturition. The International Journal of Neuroscience 118(9):1299−1315

doi: 10.1080/00207450701872846
[46]

Decaluwe R, Janssens GPJ, Declerck I, de Kruif A, Maes D. 2012. Induction of parturition in the sow. Vlaams Diergeneeskundig Tijdschrift 81(3):158−165

doi: 10.21825/vdt.v81i3.18353
[47]

Muns R, Malmkvist J, Larsen MLV, Sørensen D, Pedersen LJ. 2016. High environmental temperature around farrowing induced heat stress in crated sows. Journal of Animal Science 94(1):377−384

doi: 10.2527/jas.2015-9623
[48]

Kraut JA, Madias NE. 2014. Lactic acidosis. New England Journal of Medicine 371(24):2309−2319

doi: 10.1056/nejmra1309483