title: Effects of pre-weaning dietary substitutions on plasma insulin and glucose profiles in primiparous sows.
abstract: The objective of this study was to investigate the effects of substituting 1 kg of a standard lactation diet with 1 kg of a sugar-rich (15.75 DE MJ/kg) or fat-rich (23.85 DE MJ/kg) diet during late lactation on blood glucose and insulin changes in primiparous sows. During a 4-week lactation period, 21 primiparous sows were fed to appetite with a standard lactation diet (14.10 DE MJ/kg). At 9 days before weaning, sows were assigned to a control (C, n = 7), fat (F, n = 6) or sugar (S, n = 8) treatment. During the treatment period (from 8 days before weaning until weaning), 1 kg of the lactation diet was substituted with 1 kg of a sugar-rich or fat-rich diet for S and F sows. At 3 days before weaning, serial blood samples were collected for a total of 228 min around feeding to establish pre- and postprandial plasma glucose and insulin concentrations. Preprandial plasma glucose and insulin concentrations did not differ between treatments (p > 0.05); however, mean plasma glucose and insulin concentrations were higher for S compared to F (p < 0.05) and intermediate for the C sows. Postprandial plasma concentrations of glucose and insulin were higher for the S sows than for C and F sows (p < 0.05). Sow body weight loss during late lactation did not differ between treatments (p > 0.05). The results from our study suggest that a sugar-enriched diet during the last week of lactation elevates circulating glucose and insulin concentrations and may potentially improve post-weaning fertility in primiparous sows.
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: T Y
authors: TY
authors: Chen
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: P
authors: P
authors: Stott
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: S
authors: S
authors: O'Leary
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: R Z
authors: RZ
authors: Athorn
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: E G
authors: EG
authors: Bouwman
authors: School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, SA, Australia South Australian Research and Development Institute, Roseworthy Campus, Roseworthy, SA, Australia Discipline of Obstetrics and Gynaecology, The University of Adelaide, Adelaide, SA, Australia.
authors: P
authors: P
authors: Langendijk
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001786:Blood Glucose / Q000187:drug effects*; D004032:Diet / Q000662:veterinary*; D004040:Dietary Carbohydrates / Q000494:pharmacology*; D004041:Dietary Fats / Q000494:pharmacology; D005260:Female; D005298:Fertility / Q000187:drug effects; D007328:Insulin / Q000097:blood*; D007774:Lactation; D039382:Maternal Nutritional Physiological Phenomena; D010298:Parity; D011247:Pregnancy; D013552:Swine / Q000502:physiology*
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D004041:Dietary Fats; D007328:Insulin