Dietary ractopamine supplementation of pregnant sows: what are the impacts on the neonate?
| Autor: | Ricardo de Francisco Strefezzi, Rafaella Fernandes Carnevale, André Furugen Cesar de Andrade, B. B. D. Muro, Cristian Hernando Garcia Martinez, Gisele Mouro Ravagnani, Maitê Vidal Mendonça, Marina da Silva Passarelli, Simone Maria Massami Kitamura Martins, Denis Hideki Nakasone |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Phenethylamines/administration & dosage
Sus scrofa/blood 040301 veterinary sciences animal diseases Sus scrofa piglets’ vitality SF1-1100 0403 veterinary science chemistry.chemical_compound Animal science blood parameters gestation Pregnancy Phenethylamines DESENVOLVIMENTO FETAL Animals Medicine Weaning Diet/veterinary Semitendinosus muscle Animals Newborn/blood muscle fibre medicine.diagnostic_test business.industry Animal Feed/analysis Dietary Supplements/analysis 0402 animal and dairy science Complete blood count Lipid metabolism 04 agricultural and veterinary sciences medicine.disease Animal Feed 040201 dairy & animal science Diet Animal culture Ractopamine Animals Newborn chemistry Dietary Supplements Apgar Gestation Female Animal Science and Zoology business Lipoprotein |
| Zdroj: | Animal, Vol 14, Iss 1, Pp 50-58 (2020) Martinez, C H G, Ravagnani, G M, Muro, B B D, Mendonça, M V, Passarelli, M S, Nakasone, D H, Carnevale, R F, Strefezzi, R F, Martins, S M M K & Andrade, A F C 2020, ' Dietary ractopamine supplementation of pregnant sows : what are the impacts on the neonate? ', Animal, vol. 14, no. 1, pp. 50-58 . https://doi.org/10.1017/S1751731119001496 Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1751-7311 |
| Popis: | The use of additives such as ractopamine (Rac) in pregnant sows during early-mid pregnancy is an alternative to increase foetal and progeny growth and development. However, Rac supplementation in finishing pigs can lead to behavioural and physiological changes similar to the typical stress responses. The objective of this study was to evaluate the effects of dietary supplementation with Rac in pregnant sows from day 25 to 50 of gestation (pre-hyperplastic stage) on piglet's vitality, blood parameters, number, diameter and perimeter of muscle fibres in semitendinosus muscle and developmental characteristics of piglets at birth to weaning. Forty-one hybrid sows were divided into three dietary treatments: (1) control diet without Rac (control), (2) addition of 10 mg/kg of Rac (Rac10) and (3) addition of 20 mg/kg of Rac (Rac20). Higher numbers of low-vitality piglets (P |
| Databáze: | OpenAIRE |
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