Maternal behaviour and lamb survival: From neuroendocrinology to practical application

Animal

Volumn 8, Issue 1, 2014, Pages 102-112

  Dwyer, C M ^a  

^a SCOTTISH AGRICULTURAL COLLEGE   (United Kingdom)

Author keywords

maternal behaviour; neonatal survival; oestradiol; oxytocin; sheep

Indexed keywords

AGENTS INTERACTING WITH TRANSMITTER, HORMONE OR DRUG RECEPTORS; ESTRADIOL; OXYTOCIN RECEPTOR;

ANIMAL; ANIMAL HUSBANDRY; BLOOD; CONFERENCE PAPER; FEMALE; GENETIC SELECTION; GENETICS; GROWTH, DEVELOPMENT AND AGING; MATERNAL BEHAVIOR; METABOLISM; METHODOLOGY; NEUROENDOCRINOLOGY; PHYSIOLOGY; PREGNANCY; SHEEP;

ANIMAL HUSBANDRY; ANIMALS; ESTRADIOL; FEMALE; MATERNAL BEHAVIOR; NEUROENDOCRINOLOGY; NEUROTRANSMITTER AGENTS; PREGNANCY; RECEPTORS, OXYTOCIN; SELECTION, GENETIC; SHEEP;

EID: 84905181934     PISSN: 17517311     EISSN: 1751732X     Source Type: Journal    
DOI: 10.1017/S1751731113001614     Document Type: Conference Paper

References (118)

1. Alexander G 1988. What makes a good mother? Components and comparative aspects of maternal behaviour in ungulates. Proceedings of the Australian Society for Animal Production 17, 25-41.
2. Alexander G and Bradley L 1985. Fostering in sheep. 4. Use of restraint. Applied Animal Behaviour Science 14, 355-364.
3. Alexander G, Stevens D and Bradley L 1985. Fostering in sheep. 1. Facilitation by use of textile lamb coats. Applied Animal Behaviour Science 14, 315-334.
4. Alexander G, Stevens D and Bradley L 1987. Fostering in sheep-fostering lambs onto ewes whose lambs have died soon after birth. Australian Journal of Experimental Agriculture 27, 765-769.
5. Alexander G, Stevens D and Bradley L 1989. Fostering in sheep-an exploratory comparison of several approaches. Australian Journal of Experimental Agriculture 29, 509-512.
6. Alexander G, Stevens D and Bradley L 1990. Distribution of field birth-sites of lambing ewes. Australian Journal of Experimental Agriculture 30, 759-767.
7. Alexander G, Stevens D, Kilgour R, de Langen H, Mottershead BE and Lynch JJ 1983. Separation of ewes from twin lambs: Incidence in several sheep breeds. Applied Animal Ethology 10, 301-317.
8. Arnold GW and Morgan PD 1975. Behaviour of the ewe and lamb at lambing and its relationship to lamb mortality. Applied Animal Ethology 2, 25-46.
9. Arnould C, Piketty V and Lévy F 1991. Behavior of ewes at parturition towards amniotic fluids of sheep, cows and goats. Applied Animal Behaviour Science 32, 191-196.
10. Atkins KD 1980. The comparative productivity of five breeds of ewe: 1. Lamb growth and survival. Australian Journal of Experimental Agriculture and Animal Husbandry 20, 272-279.
11. Avital E and Jablonka E 1994. Social learning and evolution of behaviour. Animal Behaviour 48, 1195-1199.
12. Basiouni GF and Gonyou HW 1988. Use of birth fluids and cervical stimulation in lamb fostering. Journal of Animal Science 66, 872-879.
13. Bates JE, Wachs TD and Vandenbos GR 1995. Trends in research on temperament. Psychiatric Services 46, 661-663.
14. Beausoleil NJ, Blache D, Stafford KJ, Mellor DJ and Noble ADL 2008. Exploring the basis of divergent selection for 'temperament' in domestic sheep. Applied Animal Behaviour Science 109, 261-274. (Pubitemid 350298614)
15. Beausoleil NJ, Blache D, Stafford KJ, Mellor DJ and Noble ADL 2012. Selection for temperament in sheep: Domain-general and context-specific traits. Applied Animal Behaviour Science 139, 74-85.
16. Bickell SL, Nowak R, Poindron P, Ferguson D and Blache D 2010. Maternal behaviour at parturition in outdoor conditions differs only moderately between single-bearing ewes selected for their calm or nervous temperament. Animal Production Science 50, 675-682.
17. Bickell S, Poindron P, Nowak R, Ferguson D, Blackberry M and Blache D 2011. Maternal behaviour and peripartum levels of oestradiol and progesterone show little difference in Merino ewes selected for calm or nervous temperament under indoor housing conditions. Animal 4, 608-614.
18. Bickell SL, Nowak R, Poindron P, Sébé F, Chadwick A, Ferguson D and Blache D 2009. Temperament does not affect the overall establishment of mutual preference between the mother and her young in sheep measured in a choice test. Developmental Psychobiology 51, 429-438.
19. Binns SH, Cox IJ, Rizvi S and Green LE 2002. Risk factors for lamb mortality on UK sheep farms. Preventive Veterinary Medicine 52, 287-303. (Pubitemid 34115447)
20. Blache D and Ferguson D 2005. Increasing sheep meat production efficiency and animal welfare by selection for temperament-Part A. Final Report to Meat and Livestock Australia on Project SHGEN.025.
21. Broad KD, Kendrick KM, Sirinathsinghji DJS and Keverne EB 1993. Changes in oxytocin immunoreactivity and messenger RNA expression in the sheep brain during pregnancy, parturition and lactation and in response to oestrogen and progesterone. Journal of Neuroendocrinology 5, 435-444. (Pubitemid 23243503)
22. Broad KD, Lévy F, Evans G, Kimura T, Keverne EB and Kendrick KM 1999. Previous maternal experience potentiates the effect of parturition on oxytocin receptor mRNA expression in the paraventricular nucleus. European Journal of Neuroscience 11, 3725-3737. (Pubitemid 29484268)
23. Brus M, Meurisse M, Franceschini I, Keller M and Lévy F 2010. Evidence for cell proliferation in the sheep brain and its down-regulation by parturition and interactions with the young. Horomones and Behavior 58, 737-746.
24. Champagne F and Meaney MJ 2001. Like mother, like daughter: Evidence for non-genomic transmission of parental behavior and stress responsivity. Progress in Brain Research 133, 287-302.
25. Champagne FA and Meaney MJ 2006. Stress during gestation alters postpartum maternal care and the development of the offspring in a rodent model. Biological Psychiatry 59, 1227-1235. (Pubitemid 43949142)
26. Cloete JJE, Cloete SWP and Hoffman LC 2010. Behaviour of Merino ewes divergently selected for multiple rearing ability in response to human beings. Proceedings of the 9th World Congress on Genetics applied to Livestock Production. Retrieved July 2013 from http://www.kongressband.de/wcgalp2010/ assets/pdf/0703.pdf
27. Cloete SWP and Scholtz AJ 1998. Lamb survival in relation to lambing and neonatal behaviour in medium wool Merinos lines divergently selected for multiple rearing ability. Australian Journal of Experimental Agriculture 38, 801-811. (Pubitemid 29079748)
28. Cloete SWP, Scholtz AJ, Gilmour AR and Olivier JJ 2002. Genetic and environmental effects on lambing and neonatal behaviour of Dormer and SA Mutton Merino lambs. Livestock Production Science 78, 183-193. (Pubitemid 35431681)
29. Cloete SWP, van Wyk JB, Scholtz AJ and Gilmour AR 2003. Genetic and environmental parameters for lambing behaviour in Merino lines divergently selected for ewe multiple rearing ability. Proceedings of the New Zealand Society for Animal Production 63, 169-172.
30. Da Costa APC, Guevara-Guzman RG, Ohkura S, Goode JA and Kendrick KM 1996. The role of oxytocin release in the paraventricular nucleus in the control of maternal behaviour in the sheep. Journal of Neuroendocrinology 8, 163-177. (Pubitemid 26099803)
31. Darwish RA and Ashmawy TAM 2011. The impact of lambing stress on post-parturient behaviour of sheep with consequences on neonatal homeothermy and survival. Theriogenology 76, 999-1005.
32. Darwish RA, Abou-Ismail UA and El-Kholya SZ 2010. Differences in postparturient behaviour, lamb performance and survival rate between purebred Egyptian Rahmani and its crossbred Finnish ewes. Small Ruminant Research 89, 57-61.
33. Dodd CL, Pitchford WS, Edwards JEH and Hazel SJ 2012. Measures of behavioural reactivity and their relationships with production traits in sheep: A review. Applied Animal Behaviour Science 140, 1-15.
34. Dwyer CM 2003. Behavioural development in the neonatal lamb: Effect of maternal and birth-related factors. Theriogenology 59, 1027-1050. (Pubitemid 36117378)
35. Dwyer CM 2008a. Individual variation in the expression of maternal behaviour: A review of the neuroendocrine mechanisms in the sheep (Ovis aries). Journal of Neuroendocrinology 20, 526-535.
36. Dwyer CM 2008b. Genetic and physiological effects on maternal behavior and lamb survival. Journal of Animal Science 86, E246-E258.
37. Dwyer CM and Lawrence AB 1997. Induction of maternal behaviour in nonpregnant, hormone-primed ewes. Animal Science 65, 403-408.
38. Dwyer CM and Lawrence AB 1998. Variability in the in expression of maternal behaviour in primiparous sheep: Effects of genotype and litter size. Applied Animal Behaviour Science 58, 311-330. (Pubitemid 28329649)
39. Dwyer CM and Lawrence AB 2000. Maternal behaviour in domestic sheep (Ovis aries): constancy and change with maternal experience. Behaviour 137, 1391-1413. (Pubitemid 33213725)
40. Dwyer CM and Lawrence AB 2005a. A review of the behavioural and physiological adaptations of extensively managed breeds of sheep that favour lamb survival. Applied Animal Behaviour Science 92, 235-260. (Pubitemid 40968305)
41. Dwyer CM and Lawrence AB 2005b. Frequency and cost of human intervention at lambing: An interbreed comparison. The Veterinary Record 157, 101-104. (Pubitemid 41065440)
42. Dwyer CM and Morgan CA 2006. Maintenance of body temperature in the neonatal lamb: Effects of breed, birth weight and litter size. Journal of Animal Science 84, 1093-1101. (Pubitemid 44405612)
43. Dwyer CM and Smith LA 2008. Parity effects on maternal behaviour are not related to circulating oestradiol concentrations in two breeds of sheep. Physiology and Behavior 93, 148-154.
44. Dwyer CM and Bünger L 2012. Factors affecting dystocia and offspring vigour in different sheep genotypes. Preventive Veterinary Medicine 103, 257-264.
45. Dwyer CM, Dingwall WA and Lawrence AB 1999. Physiological correlates of maternal-offspring behaviour in sheep: A factor analysis. Physiology and Behavior 67, 443-454. (Pubitemid 29469550)
46. Dwyer CM, Gilbert CL and Lawrence AB 2004. Pre-partum plasma estradiol and post-partum cortisol, but not oxytocin, are associated with individual differences in the expression of maternal behavior in sheep. Hormones and Behavior 46, 529-543. (Pubitemid 39535133)
47. Dwyer CM, Lawrence AB, Bishop SC and Lewis M 2003. Ewe-lamb bonding behaviours at birth are affected by maternal undernutrition in pregnancy. British Journal of Nutrition 89, 123-136. (Pubitemid 36187545)
48. Dwyer CM, McLean KA, Deans LA, Chirnside J, Calvert SK and Lawrence AB 1998. Vocalisations between mother and young in the sheep: Effects of breed and maternal experience. Applied Animal Behaviour Science 58, 105-119. (Pubitemid 28329663)
49. Fisher MW 2003. New Zealand narratives of the benefits of reduced human intervention during lambing in extensive farming systems. Journal of Agricultural and Environmental Ethics 16, 77-90.
50. Fuchs AR, Ayromlooi J and Rasmussen AB 1987. Oxytocin response to conditioned and nonconditioned stimuli in lactating ewes. Biology of Reproduction 37, 301-305.
51. Gonyou HW and Stookey JM 1983. Use of lambing cubicles and the behaviour of ewes at parturition. Journal of Animal Science 56, 787-791.
52. Gonyou HW and Stookey JM 1985. Behavior of parturient ewes in grouplambing pens with and without cubicles. Applied Animal Behaviour Science 14, 163-171.
53. Goursaud AP and Nowak R 1999. Colostrum mediates the development of mother preference by newborn lambs. Physiology and Behavior 67, 49-56. (Pubitemid 29329492)
54. Hall DG, Holst PJ and Shutt DA 1992. The effect of nutritional supplements in late pregnancy on ewe colostrum production, plasma progesterone and IGF-1 concentrations. Australian Journal of Agricultural Research 43, 325-337.
55. Hawken PAR, Luckins N, Tilbrook A, Fiol C, Martin GB and Blache D 2013. Genetic selection for temperament affects behaviour and the secretion of adrenal and reproductive hormones in sheep subjected to stress. Stress 16, 130-142.
56. Hild S, Coulon M, Schroeer A, Andersen IL and Zanella AJ 2011. Gentle vs. aversive handling of pregnant ewes: I. Maternal cortisol and behaviour. Physiology and Behavior 104, 384-391.
57. Hinch GN, Lynch JJ, Nolan JV, Leng RA, Bindon BM and Piper LR 1996. Supplementation of high fecundity Border Leicester × Merino ewes with a high protein feed: Its effect on lamb survival. Australian Journal of Experimental Agriculture 36, 129-136. (Pubitemid 126555708)
58. Hough D, Swart P and Cloete S 2013. Exploration of the hypothalamic-pituitaryadrenal axis to improve animal welfare by means of genetic selection: lessons from the South African Merino. Animals 3, 442-474.
59. Hydbring E, Madej A, MacDonald E, Drugge-Boholm C, Berglund B and Olsson K 1999. Hormonal changes during parturition in heifers and goats are related to the phases and severity of labour. Journal of Endocrinology 160, 75-85. (Pubitemid 29044570)
60. Jarvis S, Moinard C, Robson SK, Baxter E, Ormandy E, Douglas AJ, Seckl JR, Russell JA and Lawrence AB 2006. Programming the offspring of the pig by prenatal social stress: neuroendocrine activity and behaviour. Hormones and Behavior 49, 68-80. (Pubitemid 41821871)
61. Keller M, Meurisse M, Poindron P, Nowak R, Shayit M, Ferreira G and Lévy F 2003. Maternal experience influences the establishment of visual/auditory, but not of olfactory recognition of the newborn lamb by ewes at parturition. Developmental Psychobiology 43, 167-176. (Pubitemid 37248901)
62. Kendrick KM 2000. Oxytocin, motherhood and bonding. Experimental Physiology 85, 111S-124S. (Pubitemid 30182272)
63. Kendrick KM and Keverne EB 1991. Importance of progesterone and estrogen priming for the induction of maternal behavior by vaginocervical stimulation in sheep: Effects of maternal experience. Physiology and Behavior 49, 745-750.
64. Kendrick KM, Lévy F and Keverne EB 1992a. Changes in the sensory processing of olfactory signals induced by birth in sheep. Science 256, 833-836.
65. Kendrick KM, da Costa AP, Hinton MR and Keverne EB 1992b. A simple method for fostering lambs using anestrous ewes with artificially induced lactation and maternal behaviour. Applied Animal Behaviour Science 34, 345-357.
66. Kendrick KM, da Costa APC, Broad KD, Ohkura S, Guevara R, Lévy F and Keverne EB 1997. Neural control of maternal behaviour and olfactory recognition of the young. Brain Research Bulletin 44, 383-395. (Pubitemid 27467284)
67. Keverne EB and Kendrick KM 1992. Oxytocin facilitation of maternal behaviour in sheep. Annals of the New York Academy of Sciences 652, 83-101.
68. Keverne EB, Lévy F, Guevara-Guzman R and Kendrick KM 1993. Influence of birth and maternal experience on olfactory bulb neurotransmitter release. Neuroscience 56, 557-565. (Pubitemid 23290571)
69. Kikusui T, Isaka Y and Mori Y 2005. Early weaning deprives mouse pups of maternal care and decreases their maternal behavior in adulthood. Behavioural Brain Research 162, 200-206. (Pubitemid 40828532)
70. Kilgour RJ and Szantar-Coddington MR 1995. Arena behavior of ewes selected for superior mothering ability differs from that of unselected ewes. Animal Reproduction Science 37, 133-141.
71. Kleeman DO, Walker SK, Walkley JRW, Ponzoni RW, Smith DH, Grimson RJ and Seamark RF 1993. Effect of nutrition during pregnancy on birth weight and lamb survival in FecB Booroola × South Australian Merino ewes. Animal Reproduction Science 31, 213-224.
72. Krehbiel D, Poindron P, Lévy F and Prud'homme MJ 1987. Peridural anesthesia disturbs maternal behaviour in primiparous and multiparous parturient ewes. Physiology and Behavior 40, 463-472. (Pubitemid 17103737)
73. Le Neindre P, Murphy PM, Boissy A, Purvis IW, Lindsay D, Orgeur P, Bouix J and Bibé B 1998. Genetics of maternal ability in cattle and sheep. Proceedings of the 6th World Congress of the Genetics of Livestock Production 27, 23-30.
74. Lent PC 1974. Mother-infant relationships in ungulates. In The behaviour of ungulates and its relationship to management, IUCN Publication No. 24 (ed. V Geist and F Walther), pp. 14-55. International Union for the Conservation of Nature, Morges, Switzerland.
75. Lévy F and Poindron P 1987. The importance of amniotic fluids for the establishment of maternal behaviour in experienced and inexperienced ewes. Animal Behaviour 35, 1188-1192.
76. Lévy F, Poindon P and Le Neindre P 1983. Attraction and repulsion by amniotic fluids and their olfactory control in the ewe around parturition. Physiology and Behavior 31, 687-692. (Pubitemid 14200447)
77. Lévy F, Gheusi G and Keller M 2011. Plasticity of the parental brain: A case for neurogenesis. Journal of Neuroendocrinology 23, 984-993.
78. Lévy F, Kendrick KM, Keverne EB, Piketty V and Poindron P 1992. Intracerebral oxytocin is important for the onset of maternal behavior in inexperienced ewes delivered under peridural anesthesia. Behaviour Neuroscience 106, 427-432.
79. Lévy F, Guevara-Guzman R, Hinton MR, Kendrick KM and Keverne EB 1993. Effects of parturition and maternal experience on noradrenaline and acetylcholine release in the olfactory bulb of sheep. Behavioural Neuroscience 107, 662-668. (Pubitemid 23259631)
80. Lévy F, Kendrick KM, Goode JA, Guevara-Guzman R and Keverne EB 1995. Oxytocin and vasopression release in the olfactory bulb of parturient ewes-changes with maternal experience and effects on acetylcholine, gamma-aminobutyric acid, glutamate and noradrenaline release. Brain Research 669, 197-206.
81. Lévy F, Gervais R, Kinderman U, Litterio M, Poindron P and Porter R 1991. Effects of early postpartum separation on maternal selectivity and responsiveness in parturient ewes. Applied Animal Behaviour Science 31, 101-110.
82. Lindsay DR, Nowak R, Putu IG and McNeill D 1990. Behavioural interactions between the ewe and her young at parturition: A vital step for the lamb. In Reproductive physiology of Merino sheep-concepts and consequences (ed. CM Oldham, GB Martin and IW Purvis), pp. 191-205. University of Western Australia, Perth, Australia.
83. Matheson SM, Bünger L and Dwyer CM 2012. Genetic parameters for fitness and neonatal behavior traits in sheep. Behavior Genetics 42, 899-911.
84. Matheson SM, Rooke JA, McIlvaney KM, Ison S, Jack M, Bunger L, Ashworth CJ and Dwyer CM 2011. Development and validation of 'on-farm' behavioural scoring systems to assess birth assistance and lamb vigour. Animal 5, 776-783.
85. Mellor DJ and Murray L 1985. Effects of maternal nutrition on udder development during late pregnancy and on colostrum production in Scottish Blackface ewes with twin lambs. Research in Veterinary Science 39, 230-234.
86. Mellor DJ, Dingwall RA and King TJ 1993. Successful fostering of orphan lambs by non-pregnant ewes induced to lactate using exogenous hormone treatment. New Zealand Veterinary Journal 41, 200-204.
87. Mellor DJ, Flint DJ, Vernon RG and Forsyth IA 1987. Relationships between plasma hormone concentrations, udder development and the production of early mammary secretions in twin-bearing ewes on different planes of nutrition. Quarterly Journal of Experimental Physiology and Cognate Medical Sciences 72, 345-356.
88. Meurisse M, Gonzalez A, Delsol G, Caba D, Lévy F and Poindron P 2005. Estradiol receptor-alpha expression in hypothalamic and limbic regions of ewes is influenced by physiological state and maternal experience. Hormones and Behavior 48, 34-43. (Pubitemid 40779288)
89. Murphy PM, Purvis IW, Lindsay DR, LeNeindre P, Orgeur P and Poindron P 1994. Measures of temperament are highly repeatable in Merino sheep and some are related to maternal behaviour. Proceedings of the Australian Society for Animal Production 20, 247-248.
90. Nelson EE and Panksepp J 1998. Brain substrates of infant-mother attachment: contributions of opioids, oxytocin, and norepinephrine. Neuroscience and Biobehavioural Reviews 22, 437-452. (Pubitemid 28193973)
91. O'Doherty JV and Crosby TF 1996. The effect of diet in late pregnancy on progesterone concentration and colostrum yield in ewes. Theriogenology 46, 233-241. (Pubitemid 28155833)
92. Otal J, Lévy F, Cornilleau F, Moussu C, Keller M and Poindron P 2009. Preventing physical interactions between parturient ewes and their neonate differentially impairs the development of maternal responsiveness and selectivity depending on maternal experience. Applied Animal Behaviour Science 120, 140-149.
93. Packer C, Lewis S and Pusey A 1992. A comparative analysis of non-offspring nursing. Animal Behaviour 43, 265-281.
94. Patin V, Lordi B, Vincent A, Thoumas JL, Vaudry H and Caston J 2002. Effects of prenatal stress on maternal behavior in the rat. Developmental Brain Research 139, 1-8. (Pubitemid 35284674)
95. Pedersen CA and Boccia ML 2002. Oxytocin links mothering received, mothering bestowed and adult stress responses. Stress 5, 259-267. (Pubitemid 36019511)
96. Pena CJ and Champagne FA 2013. Implications of temporal variation in maternal care for the prediction of neurobiological and behavioral outcomes in offspring. Behavioral Neuroscience 127, 33-46.
97. Perrin G, Meurisse M and Lévy F 2007. Inactivation of the medial preoptic area or the bed nucleus of the stria tenninalis differentially disrupts maternal behavior in sheep. Hormones and Behavior 52, 461-473. (Pubitemid 47489778)
98. Pickup HE and Dwyer CM 2011. Breed differences in the expression of maternal care at parturition persist throughout the lactation period in sheep. Applied Animal Behaviour Science 132, 33-41.
99. Plush KJ, Hebart ML, Brien FD and Hynd PI 2011. The genetics of temperament in Merino sheep and relationships with lamb survival. Applied Animal Behaviour Science 134, 130-136.
100. Poindron P, Lévy F and Keller M 2007. Maternal responsiveness and maternal selectivity in sheep and goats: the two facets of maternal attachment. Developmental Psychobiology 49, 54-70. (Pubitemid 46181843)
101. Poindron P, Le Neindre P, Lévy F and Keverne EB 1984. The physiological mechanisms of the acceptance of the newborn among sheep. Biology of Behaviour 9, 65-88.
102. Poindron P, Otal J, Ferreira G, Keller M, Guesdon V, Nowak R and Lévy F 2010. Amniotic fluid is important for the maintenance of maternal responsiveness and the establishment of maternal selectivity in sheep. Animal 4, 2057-2064.
103. Price EO, Dally MR and Hernandez L 2003. A note on the use of odor manipulation to facilitate the adoption of alien lambs by ewes bearing twins. Applied Animal Behaviour Science 81, 127-131. (Pubitemid 36238277)
104. Putu IG, Poindron P and Lindsay DR 1988. A high level of nutrition during late pregnancy improves subsequent maternal behaviour in Merino ewes. Proceedings of the Australian Society of Animal Production 17, 294-297.
105. Rooke JA, Houdijk JGM, McIlvaney KM, Ashworth CJ and Dwyer CM 2010. Differential effects of maternal nutrient restriction between days one and ninety of pregnancy on ewe and lamb performance and lamb parasitism of ewes in hill and lowland breeds. Journal of Animal Science 88, 3833-3842.
106. Rosenblatt JS 2003. Outline of the evolution of behavioral and nonbehavioral patterns of parental care among the vertebrates: critical characteristics of mammalian and avian parental behaviour. Scandinavian Journal of Psychology 44, 265-271. (Pubitemid 37256454)
107. Roussel S, Hemsworth PH, Leruste H, White C, Duvaux-Ponter C, Nowak R and Boissy A 2006. Repeated transport and isolation during pregnancy in ewes: Effects on the reactivity to humans and to their offspring after lambing. Applied Animal Behaviour Science 97, 172-189.
108. Russell AF and Lummaa V 2009. Maternal effects in cooperative breeders: from hymenopterans to humans. Philosophical Transactions of the Royal Society B: Biological Sciences 364, 1143-1167.
109. Shillito-Walser E 1980. Maternal recognition and breed identity in lambs living in a mixed flock of Jacob, Clun Forest and Dalesbred sheep. Applied Animal Ethology 6, 221-231.
110. Shoji H and Kato K 2009. Maternal care affects the development of maternal behavior in inbred mice. Developmental Psychobiology 51, 345-357.
111. Smith JW, Seckl JR, Evans AT, Costall B and Smythe JW 2004. Gestational stress induces post-partum depression-like behaviour and alters maternal care in rats. Psychoneuroendocrinology 29, 227-244. (Pubitemid 37357181)
112. Szyf M, Weaver ICG, Champagne FA, Diorio J and Meaney MJ 2005. Maternal programming of steroid receptor expression and phenotype through DNA methylation in the rat. Frontiers in Neuroendocrinology 26, 139-162. (Pubitemid 41772652)
113. Szyf M, Weaver ICG, Cervoni N, D'Alessio AC, Champagne FA and Meaney MJ 2003. Transgenerational epigenomic imprinting by maternal behavior through DNA methylation and its reversal by histone deacetylase inhibitors. American Journal of Medical Genetics 122B, 13.
114. Thomson AM and Thomson W 1949. Lambing in relation to the diet of the pregnant ewe. British Journal of Nutrition 2, 290-305.
115. von Borstel UK, Moors E, Schichowski C and Gauly M 2011. Breed differences in maternal behaviour in relation to lamb (Ovis orientalis aries) productivity. Livestock Science 137, 42-48.
116. Ward SJ, Liste G and Tinarwo A 2011. Attitudes of UK sheep farmers towards fostering methods: A national survey. Small Ruminant Research 99, 87-92.
117. Weaver ICG, Cervoni N, Champagne FA, D'Alessio AC, Sharma S, Seckl JR, Dymov S, Szyf M and Meaney MJ 2004. Epigenetic programming by maternal behaviour. Nature Neuroscience 7, 847-854.
118. Young LJ, Wang ZX, Donaldson R and Rissman EF 1998. Estrogen receptor alpha is essential for the induction of oxytocin receptor by estrogen. Neuroreport 9, 933-936. (Pubitemid 28179303)