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Limits to sustained energy intake during lactation : effects of macronutrient compositionKagya-Agyemang, James Kwame January 2008 (has links)
Limits to sustained energy intake during lactation were investigated in MF1 mice. The feeding of high protein to females at 21°C had negative effects on lactation performance. This was because the females consumed much less food and energy at peak lactation but their mean daily energy expenditure (DEE) was higher than that of females fed high carbohydrate diet, so the energy available for milk production was greatly reduced. The feeding of high and medium fat diets to lactating females at 21°C had positive effects on lactation performance. The females consumed much more food and energy at peak lactation but their mean DEE was the same as that of females fed low fat, so the energy available for milk production was greatly increased. The positive effects of feeding high and medium fat to the lactating mice were far greater than predicted by the heat dissipation limit hypothesis, suggesting that this hypothesis can not explain all the findings of the present study. The fixed DEE of high fat, medium fat and low fat fed females strongly support the heat dissipation limit hypothesis. Lactation significantly decreased pro-opiomelanocortin (POMC) and increased agouti-related peptide (AgRP) gene expression in the hypothalamic arcuate nucleus (ARC) despite the reduced neuropeptide Y (NPY) expression in the ARC. Activated AgRP orexigenic pathways and attenuated anorexigenic POMC pathways in the hypothalamus probably promoted the hyperplagia of lactation. The fact that AgRP increased while POMC decreased but SOCS-3 was unchanged in the lactating females exposed to 21°C indicates that the MF1 mice were sensitive to the action of leptin. mTOR was not involved in lactation hyperphagia in MF1 mice. Lactation significantly increased fat mass and obesity-associated gene (FTO) expression in the hypothalamic ventromedial nucleus. There were no changes in the main anabolic and catabolic neuropeptides at 30°C.
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Lactation et allaitement sous le rapport physiologique et social thèse présentée et soutenue à la Faculté de médecine de Paris le 6 avril 1837 /Simyan, Jean François Alfred. January 2003 (has links)
Thèse Médecine Paris, 1837 numéro 94.
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Facteurs motivant le changement de tétines chez le veau (Bos taurus)Gaboury, Chantal Linda. January 2000 (has links)
Thèses (M.Sc.)--Université de Sherbrooke (Canada), 2000. / Titre de l'écran-titre (visionné le 20 juin 2006). Publié aussi en version papier.
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The effects of estrogen, progesterone and prolactin on the oxytocin receptors in the rat mammary glandRuberti, Annabeth. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 48-51).
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Fatty acid synthase is a major polypeptide constituent of cytosolic lipoprotein and is associated with components of the milk lipid secretory pathway /Keon, Brigitte H., January 1993 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 115-123). Also available via the Internet.
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Untersuchungen über das laktotrope hypophysen-hormon "prolaktin" als milchtreibendes mittel ...Meyer zu Bargholz, Gerhard, January 1940 (has links)
Inaug.-Diss.--Leipzig. / At head of title: Aus der Ambulatorischen Universitäts-Tierklinik in Leipzig ... Lebenslauf. "Schrifttum": p. 46-[48].
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The purification and characterization of bovine placental lactogenArima, Yoshinobu. January 1982 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1982. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 100-125).
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Experiments on the biochemistry of lactationBarry, John Michael January 1956 (has links)
No description available.
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Influence of reproductive stage and ovarian steroid treatment on the milk-ejection reflexJiang, Qiubo January 1996 (has links)
No description available.
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The effect of recombinantly-derived bovine somatotrophin (rebST) on galactopoiesis and aspects of hepatic phyiology in the Friesland sheepPendleton, Janet Wendy January 1991 (has links)
No description available.
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