Andersen, IL, Berg, S and Bøe, KE 2005. Crushing of piglets by the mother sow (Sus scrofa) – purely accidental or a poor mother? Applied Animal Behaviour Science 93, 229–243.
Andersen, IL, Nævdal, E and Bøe, KE 2011. Maternal investment, sibling competition, and offspring survival with increasing litter size and parity in pigs (Sus scrofa). Behavioral Ecology and Sociobiology 65, 1159–1167.
Baxter, EM, Jarvis, S, Sherwood, L, Robson, SK, Ormandy, E, Farish, M, Smurthwaite, KM, Roehe, R, Lawrence, AB and Edwards, SA 2009. Indicators of piglet survival in an outdoor farrowing system. Livestock Science 124, 266–276.
Blackshaw, JK, Blackshaw, AW, Thomas, FJ and Newman, FW 1994. Comparison of behaviour patterns of sows and litters in a farrowing crate and a farrowing pen. Applied Animal Behaviour Science 39, 281–295.
Bozděchová, B, Illmann, G, Andersen, IL, Haman, J and Ehrlenbruch, R 2014. Litter competition during nursings and its effect on sow response on day 2 postpartum. Applied Animal Behaviour Science 150, 9–16.
Brown-Brandl, TM, Nienaber, JA, Xin, H and Gates, RS 2004. A literature review of swine heat production. Transactions of the ASAE 47, 259–270.
Burri, M, Wechsler, B, Gygax, L and Weber, R 2009. Influence of straw length, sow behaviour and room temperature on the incidence of dangerous situations for piglets in a loose farrowing system. Applied Animal Behaviour Science 117, 181–189.
Gu, Z, Gao, Y, Lin, B, Zhong, Z, Liu, Z, Wang, C and Li, B 2011. Impacts of a freedom farrowing pen design on sow behaviours and performance. Preventive Veterinary Medicine 102, 296–303.
Hales, J, Moustsen, VA, Nielsen, MBF and Hansen, CF 2015. Temporary confinement of loose-housed hyperprolific sows reduces piglet mortality. Journal of Animal Science 93, 4079–4088.
Hales, J, Moustsen, VA, Nielsen, MBF and Hansen, CF 2016. The effect of temporary confinement of hyperprolific sows in sow welfare and piglet protection pens on sow behaviour and salivary cortisol concentrations. Applied Animal Behaviour Science 183, 19–27.
Hoy, S, Lutter, C, Puppe, B and Wähner, M 1995. Correlations between the vitality of newborn piglets, teat order, mortality, and live weight development up to weaning. Berliner und Munchener Tierarztliche Wochenschrift 108, 224–228.
Hrupka, BJ, Leibbrandt, VD, Crenshaw, TD and Benevenga, NJ 1998. The effect of farrowing crate heat lamp location on sow and pig patterns of lying and pig survival. Journal of Animal Science 76, 2995–3002.
Kilbride, AL, Mendl, M, Statham, P, Held, S, Harris, M, Cooper, S and Green, LE 2012. A cohort study of preweaning piglet mortality and farrowing accommodation on 112 commercial pig farms in England. Preventive Veterinary Medicine 104, 281–291.
Larsen, MLV and Pedersen, LJ 2015. Does light attract piglets to the creep area? Animal 9, 1032–1037.
Li, Y, Johnston, L and Hilbrands, A 2009. Pre-weaning mortality of piglets in a bedded group-farrowing system. Journal of Swine Health Production 18, 75–80.
Lou, Z and Hurnik, JF 1994. An ellipsoid farrowing crate: its ergonomical design and effects on pig productivity. Journal of Animal Science 72, 2610–2616.
Marchant, JN, Broom, DM and Corning, S 2001. The influence of sow behaviour on piglet mortality due to crushing in an open farrowing system. Animal Science 72, 19–28.
McGlone, JJ and Morrow-tesch, J 1990. Productivity and behavior of sows in level vs. sloped farrowing pens and crates. Journal of Animal Science 68, 82–87.
McGlone, JJ, Stansbury, WF, Tribble, LF and Morrow, JL 1988. Photoperiod and heat stress influence on lactating sow performance and photoperiod effects on nursery pig performance. Journal of Animal Science 66, 1915–1919.
Morello, GM 2015. Investigating piglet crushing by the sow: a data mining approach. PhD thesis, Purdue Univeristy, West Lafayette, IN, USA.
Morrow-tesch, J and Mcglone, JJ 1990. Sources of maternal odors and the development of odor preferences in baby pigs. Journal Animal Science 68, 3563–3571.
Parfet, KAR and Gonyou, HW 1991. Attraction of newborn piglets to auditory, visual, olfactory and tactile stimuli. Journal of Animal Science 69, 125–133.
Prunier, A, Dourmad, JY and Etienne, M 1994. Effect of light regimen under various ambient temperatures on sow and litter performance. Journal of Animal Science 72, 1461–1466.
Schormann, R and Hoy, S 2006. Effects of room and nest temperature on the preferred lying place of piglets – a brief note. Applied Animal Behaviour Science 101, 369–374.
Stevenson, JS, Pollmann, DS, Davis, DL and Murphy, JP 1983. Influence of supplemental light on sow performance during and after lactation. Journal of Animal Science 56, 1282–1286.
Tanida, H, Miura, A, Tanaka, T and Yoshimoto, T 1996. Behavioral responses of piglets to darkness and shadows. Applied Animal Behaviour Science 49, 173–183.
Taylor, N, Prescott, N, Perry, G, Potter, M, Le Suerur, C and Wathes, C 2006. Preference of growing pigs for illuminance. Applied Animal Behaviour Science 96, 19–31.
Vasdal, G, Møgedal, I, Bøe, K, Kirkden, R, and Andersen, IL 2010. Piglet preference for infrared temperature and flooring. Applied Animal Behaviour Science 122, 92–97.
Vasdal, G, Østensen, I, Melišová, M, Bozděchová, B, Illmann, G and Andersen, IL 2011. Management routines at the time of farrowing – effects on teat success and postnatal piglet mortality from loose housed sows. Livestock Science 136, 225–231.
Xin, H and Zhang, Q 1999. Preference for lamp or mat heat by piglets at cool and warm ambient temperatures with low to high drafts. Applied Engineering in Agriculture 15, 547–551.
Zhang, Q and Xin, H 2000a. Modeling heat mat operation for piglet creep heating. Transactions of the ASAE 43, 1261–1267.
Zhang, Q and Xin, H 2000b. Static and dynamic temperature distribution of heat mats for swine farrowing creep heating. Applied Engineering in Agriculture 16, 563–569.
Zhang, Q and Xin, H 2001. Responses of piglets to creep heat type. Applied Engineering in Agriculture 17, 515–519.