Effects of recombinant porcine somatotropin on growth and carcass traits in meishan pigs |
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| Affiliation: | 1. Institute of Critical Care and Anesthesia, Medanta the Medicity, Gurgaon, Haryana, 122001, India;2. Institute of Critical Care and Anesthesia, Medanta the Medicity, Gurgaon, Haryana, 122001, India;3. Institute of Critical Care and Anesthesia, Medanta the Medicity, Gurgaon, Haryana, 122001, India;4. Institute of Critical Care and Anesthesia, Medanta the Medicity, Gurgaon, Haryana, 122001, India;5. Institute of Clinical Research, Medanta the Medicity, Gurgaon, Haryana, 122001, India;1. School of Agricultural Science, Shanxi Agricultural University, Taigu, 030801, Shanxi, China;2. Institute of Agricultural Bioengineering, Shanxi Agricultural University, Taigu, 030801, Shanxi, China;3. Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan, 030031, Shanxi, China;4. Shanxi Key Laboratory of Resources and Genetic Improvement of Minor Crops, Taigu, 030801, Shanxi, China;1. Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville VA22908, USA;2. Institute of Computing Science, Poznan University of Technology, Poznan, Poland;3. Center for Biocrystallographic Research, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland;4. College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences, University of Warsaw, Warsaw, Poland;5. Faculty of Chemistry, Biological and Chemical Research Center, University of Warsaw, Warsaw, Poland;6. Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;1. Info fauna - Centre Suisse de Cartographie de la Faune (CSCF) and Centre de coordination pour la protection des reptiles et des amphibiens de Suisse (karch), Avenue Bellevaux 51, Neuchâtel, Switzerland;2. Geneva School of Engineering, Architecture and Landscape (HEPIA), HES-SO, University of Applied Sciences and Arts Western Switzerland, 152, route de Presinge, Jussy, Switzerland;3. Department of Environmental Sciences, Section of Conservation Biology, University of Basel, St. Johanns-Vorstadt 10, Basel, Switzerland |
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| Abstract: | Effects of recombinant porcine somatotropin (rpST) on growth, feed intake, feed conversion, back-fat thickness and lean percentage were examined in growing Meishan pigs. The experiment comprised 42 barrows of which 20 were administered 14 mg rpST twice a week i.m., starting at 40 kg, the others received a placebo. Pigs were fed ad libitum a diet containing 9.2 MJ net energy and 156 g crude protein kg−1 and were slaughtered at 90 kg liveweight. From 40 to 90 kg liveweight, rpST effects were: daily gain +17.9%; feed intake −5.1%; feed conversion −17.5%; backfat thickness −29.8%; lean percentage +16.0%. The effects of rpST in Meishan are much larger than in a similar experiment with leaner western pigs. Development of synthetic breeds with Meishan in combination with the use of rpST in cross-bred fattening pigs may be a way to economically exploit the high fertility of Meishan. |
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