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Registros recuperados: 5
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A full belly and colostrum: two major determinants of filial love Animal Physiology
Val-Laillet, D.; Simon, M.; Nowak, R..
The establishment of filial bonding in sheep relies on the success of the first suckling bouts. Previous work has shown that colostrum ingestion facilitates the development of a preference for the mother. We conducted a series of experiments to investigate the influence of quantitative and qualitative factors linked to fluid ingestion. The first experiment demonstrated that the procedure was not detrimental to the mother-young interaction and did not cause any harm to the lamb. In a second experiment, lambs could interact with their dam but were deprived of suckling during the first 12h after birth (the udder was covered) and fed via a nasogastric tube in the presence of their mother on seven occasions. When tested in a two-choice test at 12h of age, lambs...
Tipo: Journal (Paginated) Palavras-chave: QP Physiology.
Ano: 2004 URL: http://phy043.tours.inra.fr:8080/archive/00000050/
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Differential c-Fos Expression in the Newborn Lamb Nucleus Tractus Solitarius and Area Postrema following Ingestion of Colostrum or Saline Animal Physiology
Val-Laillet, D.; Meurisse, M.; Tillet, Y.; Nowak, R..
Visceral stimuli and the gut-brain axis play a crucial role in the control of ingestion even in the neonate. The aim of this study was to assess the neuronal activation in the Nucleus Tractus Solitarius (NTS) and the Area Postrema (AP) following nutritional and non-nutritional stimulations. Lambs received a single gastric infusion of colostrum or saline at 5% birth weight or were sham infused. Infusion of either liquid led to c-Fos-like immunoreactivity (c-FLI) in the NTS and AP. Differences were observed along the sections of the NTS rostro-caudal axis according to the nature of the stimulation, suggesting a specificity of certain afferents and/or NTS areas for nutritional or non-nutritional signals. In the AP, the neuronal activation induced by colostrum...
Tipo: Journal (Paginated) Palavras-chave: QP Physiology.
Ano: 2004 URL: http://phy043.tours.inra.fr:8080/archive/00000054/
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Early recognition of newborn goat kids by their mother: II- Auditory recognition and evidence of an individual acoustic signature in the neonate Animal Physiology
Terrazas, A.; Serafin, N.; Hernandez, H.; Nowak, R.; Poindron, P..
The vocal recognition of newborn kids by their mother at 2 days postpartum, and the possible existence of inter-individual differences in the voice structure of newborn kids were investigated in two separate studies. The ability of goats to discriminate between the bleats of their own versus an alien kid was tested at 2 days postpartum in mothers being prevented access to visual and olfactory cues from the young. Goats spent significantly more time on the side of the enclosure from which their own kid was bleating, looked in its direction for longer and responded more frequently to the bleats of their own than to those of the alien kid (p < 0.05). In the second study the sonograms of 13 kids, studied from day 1 to 5 of their life, showed significant...
Tipo: Journal (Paginated) Palavras-chave: QP Physiology.
Ano: 2003 URL: http://phy043.tours.inra.fr:8080/archive/00000055/
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From birth to colostrum: early steps leading to lamb survival Inra
Nowak, R.; Poindron, P..
Tipo: Conference Paper Palavras-chave: COMPORTEMENT MATERNEL; RELATION MERE-JEUNE; COLOSTRUM; RESERVE ENERGETIQUE; NOUVEAU-NE; LIEN; ATTACHEMENT; PERIODE POSTNATALE SUCKLING.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007600150d2&uri=/notices/prodinra1/2008/03/
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Possibilités et limites de l'utilisation du verrat en accouplement naturel Inra
Nowak, R.; Paquignon, M.; Signoret, J.P..
Quinze verrats Large-White ou Land-Race de 9 mois ont été soumis au rythme de 1,2, 3 ou 4 éjaculats journaliers pendant 5 jours, suivis d’un repos sexuel de deux semaines. Si tous ont pu réaliser une éjaculation journalière, respectivement91,6 %, 58,3 % et 41,6 % d’entre eux ont pu produire du sperme aux autres rythmes. Le nombre de spermatozoïdes par éjaculat décroît pour atteindre, le cinquième jour, respectivement, environ 15, puis moins de 10 et 5 milliards pour un, deux et quatre éjaculats journaliers. Dans ces deux derniers cas, 12 % et 31 % des éjaculats contenaient moins de 3 milliards de spermatozoïdes, c’est-à-dire le nombre minimum efficace dans le cas de l’utilisation en insémination artificielle. Pour valider les résultats en accouplement...
Tipo: Journal Article Palavras-chave: MALE; COMPORTEMENT SEXUEL; ACCOUPLEMENT; FECONDANCE.
Ano: 1988 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9300034072029105&uri=/notices/prodinra1/2008/06/
Registros recuperados: 5
Primeira ... 1 ... Última
 

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