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Housing. --- Nest building. --- Nest. --- Oxytocin. --- Pig. --- Pregnancy. --- Progesterone. --- Prolactin. --- Prolactine. --- Reproduction. --- Somatostatin. --- Sow. --- Sows. --- Variation.
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Regurgitation is a way of feeding animals, usually young, by disgorging partially digested food. Except for a similar way of feeding in some species of birds, regurgitation is used exclusively by canids (as far as we know today). Earlier, it had been suggested that regurgitation was an important step in the weaning process. More recently, however, it has been shown that this behaviour no longer occurs in all domestic dogs. We review the literature about regurgitation behaviour and digestive and lactational physiology; all discussed with reference to weaning. We suggest that weaning may be influenced by the bitch giving the pups a chance to choose easily accessible regurgitated food instead of milk. This may lead to a smoother weaning process, with a lower level of aggression from the mother as a consequence. Furthermore, the physiological status of the pups during the weaning period might be influenced if the regurgitated, partly digested food, is important for their digestion. Mechanical preparation of the food or supply of gastrin, gastric juice and other components could help to improve digestion. Lastly, since the digestive and lactogenetic systems are activated simultaneously at both suckling and feeding, a decrease in both systems might cause a bitch to neither digest nor produce milk following ingestion; this would open the possibility for the food to be regurgitated
Aggression. --- Animal. --- Animals. --- Behavior. --- Behaviour. --- Bird. --- Boxes. --- Canids. --- Digestion. --- Dog. --- Dogs. --- Domestic dog. --- Feeding and nutrition. --- Feeding. --- Food. --- Gastrin. --- Insulin. --- Lactation. --- Level. --- Light. --- Milk. --- Mother. --- Old. --- Parent-offspring conflict. --- Physiological. --- Physiology. --- Pups. --- Ranging domestic pigs. --- Regurgitation. --- Release. --- Review. --- Somatostatin. --- Strategies. --- Strategy. --- System. --- Systems. --- Time. --- Weaning. --- Young.
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Considerable attention has been focused on the role of corticotropin releasing factor (CRF) as well as CRF-binding protein (CRF-BP) in neuropsychiatric disorders and neurodegenerative diseases including epilepsy. Therefore, in the present study, we investigated the temporal and spatial alteration of CRF and CRF-BP in the gerbil hippocampal complex in order to characterize the possible changes and associations with different sequelae of spontaneous seizure in these animals. CRF immunoreactivity was shown in the interneurons of the hippocampal complex at 30 min following seizure. Additionally, alteration of CRF-BP immunoreactivity was restricted to the entorhinal cortex after seizure. These results indicate some factors for consideration. First, in the gerbil hippocampal complex, the delayed increase of CRF immunoreactivity, in spite of its excitatory function, may attenuate seizure activity, but may not do so in epileptogenesis. Second, in contrast to the hippocampl complex, the increase in CRF-BP immunoreactivity in the entorhinal cortex following seizure may participate in feedback inhibitory modulation. (C) 2003 Elsevier Science Ltd. All rights reserved
Activity. --- Animal. --- Animals. --- Association. --- Attention. --- Behavioral-responses. --- Brain. --- Convulsive seizures. --- Cortex. --- Corticotropin-releasing-factor. --- Crf. --- Dentate gyrus. --- Disease. --- Diseases. --- Disorder. --- Entorhinal cortex. --- Epilepsies. --- Epilepsy. --- Expression. --- Feedback. --- Function. --- Gerbil. --- Hippocampal complex. --- Hippocampal. --- Hippocampus. --- Immunoreactive neurons. --- Immunoreactivity. --- Increase. --- Kainate-elicited seizures. --- Modulation. --- Mongolian gerbil. --- Protein. --- Rat. --- Seizure. --- Somatostatin. --- Spatial. --- Spontaneous seizure. --- Subiculum. --- Synaptic connections. --- Time.
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