Plasma catecholamines and social behavior in male vervet monkeys (Cercopithecus aethiops sabaeus)

Dillon, James E.; Raleigh, Michael J.; McGuire, Michael T.; Bergin-Pollack, Deborah; Yuwiler, Arthur

doi:10.1016/0031-9384(92)90080-l

Cited by 17 publications

(5 citation statements)

References 34 publications

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“…Sex and social rank appeared to influence the peripheral catecholamine profile of pigs more strongly than RAG feeding because dominant barrows had greater plasmatic concentrations of EPI than subordinate ones. Increased EPI and decreased NE concentrations characterize the activation of the sympathetic nervous system and are correlated with the maintenance of the social rank status and social competence (Dillon et al, 1992). However, in another study carried out in pigs, plasma NE and EPI concen-trations of dominant and subordinate individuals were similar although they were linearly correlated with aggressive behaviors (Fernandez et al, 1994).…”

Section: Discussionmentioning

confidence: 99%

Behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs1

Poletto

Meisel

Richert

et al. 2010

Journal of Animal Science

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Aggression can impair productivity and well-being. The association between aggression in finishing pigs and the feed additive ractopamine (RAC), a beta-adrenoreceptor agonist, is unknown and warrants further investigation. Our goal was to examine behavioral activity, including aggression, in the home pen and concentrations of peripheral amines in barrows and gilts, taking into account diet (RAC) and social rank. Sixty-four finishing pigs, housed in pens of 4 by sex, were fed either a control (CTL) or RAC-added (5 mg/kg for 2 wk plus 10 mg/kg for another 2 wk) diet. The top dominant and bottom subordinate pigs in each pen were determined at mixing (2 wk pretrial). The behavior of all pigs was recorded continuously during the pretrial week (baseline) and for the following 4 wk. These behavioral data were used to evaluate home pen aggression, including the number of agonistic interactions (AINX) and constituent aggressive actions, during a 3-h period (0800 to 1100 h) once per week and their change in relation to the baseline. Time-budget behaviors and postures were analyzed over eight 24-h periods (2 d/wk) using 10-min instantaneous scan sampling that focused on only the dominant and subordinate pigs in each pen. These 2 pigs were also subjected to blood collection once per week during the trial to determine concentrations of dopamine, norepinephrine, epinephrine, and serotonin (5-HT) using HPLC. Gilts performed more bites and total actions per AINX than barrows, and RAC-fed gilts increased bites and pursuits, whereas these behaviors decreased compared with baseline values in all other subgroups (P < 0.05). Gilts fed RAC increased the total number actions per AINX, whereas the occurrence of AINX decreased for all subgroups (P < 0.01). Overall, RAC-fed pigs were more behaviorally active, spending more time alert, bar biting, and sham chewing compared with CTL pigs (P < 0.05). The dominant RAC-fed pigs tended to have the greatest norepinephrine concentrations among the tested subgroups (P = 0.08). Dominant barrows had greater epinephrine concentrations than subordinate barrows (P < 0.05). The RAC-fed gilts tended to have lesser 5-HT concentrations than CTL gilts (P = 0.08), whereas concentrations were similar in barrows (P > 0.10). Greater activity and the increase in oral-related behaviors observed in RAC-fed pigs may be mediated by the increase in arousal caused by RAC. Intensified aggression in gilts, especially when fed RAC, may be linked to reduced central 5-HT and greater noradrenergic activity, and further research on brain neurotransmitters in gilts is needed.

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Section: Discussionmentioning

confidence: 99%

Behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs1

Poletto

Meisel

Richert

et al. 2010

Journal of Animal Science

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“…As stress hormones, EP and NE levels are consistently used to mark the level of stress, and capability to deal with stress, of an animal (Dillon et al, 1992).…”

Section: Hs-induced Changes In Neurotransmittersmentioning

confidence: 99%

Genetic variations alter physiological responses following heat stress in 2 strains of laying hens

et al. 2012

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“…Our results rely heavily on a uniform protocol applied when handling all animals since many factors can influence sympathetic activity and consequently -various hormones' levels. Collection of the blood samples in our study was not without stress which could itself greatly modify the circulating amounts of the catecholamines, even in spite of a rapid clearance and catabolism of adrenaline and noradrenaline (Dillon et al 1992). This applies particularly to small animals, where the difficulty lies in providing stress-free conditions, contrasted with the need to collect amounts of blood that are large in proportion to the size of the animal (Buhler et al 1978).…”

Section: Discussionmentioning

confidence: 93%

Diet modulates components of animal personality in house sparrows: insights into a possible hormone-mediated mechanism

Drobniak¹,

Gudowska²

2020

Preprint

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Animals do not eat whatever food item they find. They usually balance the intake of key nutrients, for example, essential amino acids that cannot be synthesized by animals and must be provided in the diet. However, ability to gain optimal ratios, proportions, and amounts of nutrients may be hampered by a changing environment, competitive conspecifics or species, and predators. Here, we used an experimental system in which house sparrows (Passer domesticus) were fed diet with different amino-acids composition (the experimental diet had phenylalanine and tyrosine (PT) content reduced to 42% of the control diet). PT are precursors of coping hormones: dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline) which are involved mainly in the expression of stress and fear, but also learning and long-term memory formation. In line with this, birds fed PT-deficient diet learned to avoid unpalatable food markedly slower, coped worse with stress in the presence of a novel object and were much more aggressive towards other sparrows than control birds. Surprisingly, circulating amounts of the catecholamines in blood plasma were higher in PT-limited birds than in sparrows fed the control diet. This study provides the first evidence that different amino acids composition in the diet is associated with variation in behaviours and hormone levels in birds. We conclude that food, besides its nutritional function, seems to represent one of the main modulators of behavioural expression making a balanced diet crucial for survival. Moreover, the dependence of behaviour expression on diet poses interesting questions about the sources of animal personality.

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Plasma catecholamines and social behavior in male vervet monkeys (Cercopithecus aethiops sabaeus)

Cited by 17 publications

References 34 publications

Behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs1

Behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs1

Genetic variations alter physiological responses following heat stress in 2 strains of laying hens

Diet modulates components of animal personality in house sparrows: insights into a possible hormone-mediated mechanism

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