Journal Title
Title of Journal: Trop Anim Health Prod
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Abbravation: Tropical Animal Health and Production
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Publisher
Springer Netherlands
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Authors: Alex Tsungyu Hung Brian Joseph Leury Matthew Allen Sabin Cherie Louise Collins Frank Rowland Dunshea
Publish Date: 2014/09/30
Volume: 46, Issue: 8, Pages: 1483-1489
Abstract
Chromium Cr is an essential mineral element and has been used in pig diets to improve growth performance insulin sensitivity immune response and carcase traits and to reduce heat or other stress responses The aims of thiss study were to determine the impact of nanosized chromium tripicolinate nCrPic on growth performance feed efficiency and carcase characteristics of finisher gilts during the summer period A total of 60 finisher Large White x Landrace gilts were stratified on initial weight and then within strata randomly allocated into two treatment groups in three replicates during midsummer for 28 days All pigs were housed in individual pens and had ad libitum access to feed and water Pigs were fed either a control finisher diet wheatbased diet containing 138 MJ digestible energy DE per kilogram and 056 g available lysine/MJ DE or a control diet containing 400 ppb Cr as nCrPic Dietary nCrPic supplementation increased feed intake by 6 over the entire study P = 005 In particular dietary nCrPic increased average daily feed intake ADFI by 8 P = 002 during the final 2 weeks of the study Moreover dietary nCrPic tended to improve average daily feed ADFI over the entire study P = 009 However there were no significant effects of nCrPic on feed conversion ratio FCR final weight hot standard carcase weight HCWT P2 depth or dressing percentage Plasma cortisol was decreased by 25 P = 006 by dietary nCrPic supplementation However there were no effects of nCrPic on plasma glucose insulin and nonesterified fatty acids NEFA might because of the higher feed intake In conclusion this study demonstrates that dietary nCrPic supplementation at 400 ppb can increase feed intake in finisher gilts during midsummer suggesting that nCrPic can ameliorate some of the negative effects of heat stress in pigs possibly via decreased of circulating cortisol
Keywords:
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