Segregated early weaning
نویسندگان
چکیده
http://www.aasp.org/shap/issues/v5n5/index.html he earliest efforts to use early weaning and segregation technologies to obtain pathogen-free piglets were attempted in the early 1980s.1 Initially, the strategy called for weaning pigs at 5–10 days of age and relying on medication.1,2 Later studies suggested that early weaning without medication could also reduce, but not eliminate, the impact of disease in pigs.3 Since that time, systems using some form of early weaning and segregating pigs from the breeding herd have been rapidly adopted by the United States swine industry.4 Although several investigators have observed improved growth in pigs undergoing segregated early weaning (SEW),5,6 these strategies have not proven to be a panacea that eliminates all pathogenic organisms from growing pigs. Often, these technologies are implemented without a full understanding of the underlying physiological principles involved.
منابع مشابه
Relationships between individual behavioural traits and post-weaning growth in segregated early-weaned piglets.
Piglets' individual behavioural traits have been studied in the last decade but no report has linked these traits with growth. This experiment was conducted to determine if behavioural traits of segregated early-weaned piglets could be good predictors of their post-weaning growth and, thus, help to predict their adaptation to early weaning. Following segregated early weaning at 17+/-1 days old,...
متن کاملEvaluation of segregated early weaning investigating performance, immunologic indicators (CD4, CD8), and herd health status
TJF: SF Services, PO Box 5489, Little Rock, Arkansas, 72119; RCT: University of Missouri-Columbia, Commercial Agriculture Program, W234 College of Veterinary Medicine, Columbia, Missouri 65211; BAB: USDA-ARS, Animal Physiology Unit, Columbia, Missouri; MLM, Dept. Molecular Microbiology and Immunology, School of Medicine, University of Missouri-Columbia; GLA: 5-133D Animal Science Center, Univer...
متن کاملCharacterization of gastrointestinal microbial and immune populations post-weaning in conventionally-reared and segregated early weaned pigs
متن کامل
Segregated Early Weaning (SEW) of Pasture-farrowed Pigs
and Implications Segregated early weaning (SEW) works well with pasture-farrowed pigs. The SEW pasture-farrowed pigs weighed about the same as conventionally weaned pigs at 9 weeks of age with lower death losses (about 2% less). For the period 5Ð9 weeks of age the SEW pigs gained more rapidly and were more efficient converting feed to live gain than pigs weaned at 5 weeks of age and moved to an...
متن کاملImproved weight gain in pigs using levamisole as an immunomodulator
Metho ds : Piglets (N = 1606) from a commercial segregated early-weaned (SEW) herd were randomly assigned either to receive one injection of levamisole within 24 hours of birth (T1 group), to receive levamisole once within 24 hours of birth and again at weaning (T2 group), or to a control group. Pigs were individually weighed within 24 hours of birth, at weaning, and at 7 weeks of age. Differen...
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تاریخ انتشار 1997