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Unformatted text preview: A. Huguet, G. Savary, E. Bobillier, Y. Lebreton and I. Le Huërou-Luron postweaning period in piglets Effects of level of feed intake on pancreatic exocrine secretions during the early doi: 10.2527/jas.2006-044 2006, 84:2965-2972. J ANIM SCI http://jas.fass.org/content/84/11/2965 the World Wide Web at: The online version of this article, along with updated information and services, is located on www.asas.org by guest on July 28, 2011 jas.fass.org Downloaded from Effects of level of feed intake on pancreatic exocrine secretions during the early postweaning period in piglets 1 A. Huguet, G. Savary, E. Bobillier, Y. Lebreton, and I. Le Hue ¨rou-Luron 2 Unite ´ Mixte de Recherches Syste `mes d’Elevage, Nutrition Animale et Humaine, Institut National de la Recherche Agronomique, Domaine de la Prise, 35590 St-Gilles, France ABSTRACT: The objective of this study was to deter- mine the influence of the level of feed intake and a 2- d feed restriction period on the postweaning adaptation of pancreatic exocrine secretions. At 33 d of age, 18 piglets fitted with 2 permanents catheters (for pancre- atic juice collection and reintroduction) were weaned and allocated to 1 of the following 2 dietary treatments for 5 d: restricted feed allocation (restricted) or gradu- ally increasing feed allocation (control). Pancreatic juice was collected daily during both basal and prandial peri- ods. The basal period was defined as the period from 1400 to 1700 h (i.e., 5 to 8 h after the morning meal), whereas the prandial period was defined as the period from 30 min before to 60 min after the morning meal (given at 0900). Digestive enzyme activities and anti- bacterial activity were determined. Pancreatic protein secretion was 44% less ( P < 0.05) in restricted piglets than in control piglets during the basal period. Trypsin secretion was affected by feed-restriction of piglets. The meal did not affect protein and trypsin secretions in Key words: antibacterial activity, digestive enzyme, feed intake, pancreatic secretion, piglet, weaning © 2006 American Society of Animal Science. All rights reserved. J. Anim. Sci. 2006. 84:2965–2972 doi:10.2527/jas.2006-044 INTRODUCTION Weaning of piglets induces acute changes in both the pattern of feed intake and the composition of diet. Before weaning, most piglets have consumed very little solid feed and are unfamiliar with the starter diet. Therefore, feed intake is often very low during the first postweaning days (Brooks et al., 2001). During this period, most of the variation in pancreatic enzyme activ- ity measured in pancreatic tissue and in jejunal digesta 1 Supported bya grantfrom the EuropeanUnion (EUproject QLK5- CT-2000-00522). The authors are solely responsible for the work de- scribed in this article, and their opinions are not necessarily those of the European Union....
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