Differences in adaptive abilities of three breeds of Chinese pigs. Behavioural and neuroendocrine studies

Mormède, Pierre; Dantzer, Robert; Bluthe, RM; Caritez, JC

doi:10.1186/1297-9686-16-1-85

Cited by 57 publications

(9 citation statements)

References 30 publications

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“…Results therefore show that there are very large animal variations in cortisol values and the number of gilts used may not have been adequate to denote a breed effect on baseline cortisol. It is known that breeds differ in their adaptive abilities to stressors (Mormède et al 1984) and the breed × sampling time effect in the present study corroborates that.…”

Section: Discussionsupporting

confidence: 91%

Glucose and hormonal profiles of Meishan-derived and Large White gilts in early and late gestation

Farmer¹

2003

Can. J. Anim. Sci.

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Farmer, C. 2003. Glucose and hormonal profiles of Meishan-derived and Large White gilts in early and late gestation. Can. J. Anim. Sci. 83: 73-79. Jugular catheters were inserted non-surgically in eight Large White (LW) and nine Genex-Meishan (GM, with 50% Meishan genes) gilts on days 37 and 106 of gestation to obtain serial blood samples on days 38 and 107. Meal time was 0805. Three preprandial samples (baseline) were obtained at 0740, 0750 and 0800 as well as samples every 20 min thereafter until 1100. Glucose and insulin concentrations were measured in all samples and values for cortisol and insulin-like growth factor-I (IGF-I) were determined on preprandial samples and hourly samples thereafter. All gilts were weighed and their backfat thickness measured at mating and on days 17, 34 and 109 of gestation. Gilts of the GM line were lighter (P = 0.03) and fatter (P = 0.004) than LW. Postprandial values for cortisol and IGF-I were greater in GM than LW gilts in early gestation only (P < 0.05). The same was true for baseline IGF-I (P < 0.001). Postprandial insulin was not affected by breed or stage of gestation (P > 0.1), yet glucose values were greater in LW than in GM gilts (P < 0.05) and postprandial glucose was greater in late compared to early gestation in both breeds (P < 0.001). In conclusion, both cortisol and IGF-I concentrations varied differently between genotypes depending on the stage of gestation. Furthermore, even though postprandial insulin was not affected by breed, concentrations of glucose were lower in GM gilts. A metabolic adaptation to gestation was observed in both breeds, with glucose values increasing in later gestation. n'étaient pas affectées par la race ou le stade de gestation (P > 0,1), cependant, celles du glucose étaient plus élevées chez les cochettes LW comparativement aux GM (P < 0,05) et étaient supérieures en fin de gestation dans les deux races (P < 0,001). En conclusion, les concentrations de cortisol et d'IGF-I variaient différemment entre génotype dépendant du stade de gestation. De surcroît, malgré le fait que les concentrations d'insuline aient été similaires entre les races, celles du glucose étaient plus élevées chez les LW que chez les GM. Il semble qu'une adaptation métabolique au stade de gestation ait lieu chez les deux races, tel qu'indiqué par des concentrations plus élevées de glucose en fin de gestation

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Section: Discussionsupporting

confidence: 91%

Glucose and hormonal profiles of Meishan-derived and Large White gilts in early and late gestation

Farmer¹

2003

Can. J. Anim. Sci.

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“…However, the significantly higher GR in Meishan adipose tissue may be the key to increase adiposity in this breed. Previous work has demonstrated that Meishan pigs have significantly higher plasma cortisol concentrations (Mormede et al 1984, Sutherland et al 2005) when compared with leaner, commercial breeds, such as Landrace and Yorkshire. These studies were investigating the role of stress and immune competency on cortisol concentrations and not adipose tissue regulation.…”

Section: Adipose Tissue Gene Expressionmentioning

confidence: 99%

Influence of porcine genotype on the abundance of thyroid hormones and leptin in sow milk and its impact on growth, metabolism and expression of key adipose tissue genes in offspring

Mostyn

Sebért

Litten

et al. 2006

Journal of Endocrinology

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“…There appear to be at least two different patterns of response to a perceived aversive situation: (1) an active "fight-flight" pattern characterized by increased activity, increased sympathetic adrenal-medullary activation and related increases in cardiac output and arterial pressure; and (2) a more passive "conservation-withdrawal" pattern characterized by decreased environment-directed activities, increased adrenocortical activation and suppressed reproductive function [Engel, 1967;Henry and Stephens, 1977;Koolhaas et al, 1985;Suomi, 1987]. Any individual may exhibit both types of response pattern, and the pattern more likely to occur is dependent on rearing experience and genetic background [Gentsch et al, 1981;Mormede et al, 1984;Suomi, 1987].…”

Section: Modulation Of Stress and Arousalmentioning

confidence: 99%

Effects of environmental enrichment on reproduction

1994

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Although there have been few demonstrations of a direct empirical relationship between environmental enrichment and reproductive success in captive animals, indirect and anecdotal evidence indicates the importance of physical and temporal complexity for reproduction. We discuss three major mechanisms through which environmental enrichment that specifically increases the complexity of an animal's surroundings may influence reproductive physiology and behavior: developmental processes, modulation of stress and arousal, and modification of social interactions. In complex environments developing animals learn that performing active behavior produces appropriate functional outcomes. Learning to control their environment influences their ability to adapt to novel situations, which may profoundly influence their reproductive behavior as adults in breeding situations. Chronic stress may compromise reproductive physiology and behavior; enrichment reduces stress by providing increased opportunity for behavioral coping responses. However, some degree of acute stress may be beneficial for reproduction by maintaining an animal's level of responsiveness to socio‐sexual stimuli necessary for sexual arousal and reproductive activation. Finally, environmental enrichment may influence reproductive success by stabilizing social groups, reducing aggression and increasing affiliative and play behaviors. It is concluded that multi‐variate multi‐institutional behavioral research in zoos will play an increasingly important role in the successful captive propagation of many species by closely examining relationships between environmental variables and reproductive potential of individual animals. © 1994 Wiley‐Liss, Inc.

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Differences in adaptive abilities of three breeds of Chinese pigs. Behavioural and neuroendocrine studies

Abstract: SummaryIn three breeds of Chinese pig (Mei-Shan, Jin-Hua, Jia-Xing) the

Cited by 57 publications

References 30 publications

Glucose and hormonal profiles of Meishan-derived and Large White gilts in early and late gestation

Glucose and hormonal profiles of Meishan-derived and Large White gilts in early and late gestation

Influence of porcine genotype on the abundance of thyroid hormones and leptin in sow milk and its impact on growth, metabolism and expression of key adipose tissue genes in offspring

Effects of environmental enrichment on reproduction

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