Growth and carcass quality of offspring in response to porcine somatotropin (pST) treatment of sows during early pregnancy |
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| Institution: | 1. Division of Muscle Biology and Growth, Research Institute for the Biology of Farm Animals, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany;2. Division of Behavioural Physiology, Research Institute for the Biology of Farm Animals, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany;3. Division of Genetics and Biometry, Research Institute for the Biology of Farm Animals, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany;1. Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston MA02215, United States;2. Boston University Medical Center, United States;1. Instituto Nacional de Ciência e Tecnologia da Fixação Biológica de Nitrogênio, Departamento de Bioquímica e Biologia Molecular, UFPR Curitiba, PR, Brazil;2. Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, Australia;1. Program in Health Services & Systems Research, Duke-NUS Medical School, Singapore;2. Orthopaedic Diagnostic Centre, Singapore General Hospital, Singapore;3. Department of Orthopaedic Surgery, Singapore General Hospital, Singapore;4. Duke-NUS Medical School, Singapore;5. Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore;6. Department of Medicine (General Internal Medicine), Duke University Medical Center, Durham, NC;1. ITER Korea, National Fusion Research Institute, Daejeon, 305-333, Republic of Korea;2. ITER Organization, Route de Vinon sur Verdon, CS 90046, 13067, St. Paul Lez Durance Cedex, France;3. Hyundai Heavy Industries Co. Ltd., Ulsan, 682-792, Republic of Korea;1. Biophysical Research Group, Vytautas Magnus University, Vileikos 8, Kaunas, LT-44404, Lithuania;2. PanTherapeutics, Route de Lavaux 49, CH1095, Lutry, Switzerland |
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| Abstract: | The effects of maternal treatment with porcine somatotropin (pST) during early gestation on offspring growth, carcass quality, and immunological characteristics were determined. Thirty-two sows received daily injections of either a placebo (n=16) or 6 mg of pST (n=16) from day 10 to 27 of gestation with gradual withdrawal until day 37. In neonatal piglets, a birth weight group (BWG) by treatment interaction (P<0.01) revealed decreases in the 25% heavy and 50% middle weight groups and an increase in the 25% low weight group within litters. Similar interactions were observed for muscle tissue (P=0.03) and, in opposite direction, for fat (P=0.05) percentages. The average percentage of muscle tissue was reduced (P=0.03) by pST treatment, whereas percentages of internal organs (P=0.05) and skin (P=0.04) were enhanced. The susceptibility of piglets to infections at 2 days after weaning (day 30 of age) was not altered by pST treatment. Carcasses of slaughter pigs (day 182 of age) from pST-treated sows tended to deposit less meat than controls (P=0.10) and to exhibit the same BWG by treatment interaction found at birth (P=0.08). Meat quality at slaughter was changed towards higher intramuscular fat content (P=0.01) and drip loss (P=0.01). The results suggest that pST treatment during early gestation results in more balanced litters, but, on average, is not of advantage for carcass quality. |
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