caa a22 4500 388060271 CHVBK 20180307125118.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1017/S135772980003304X doi S135772980003304X pii (NATIONALLICENCE)cambridge-10.1017/S135772980003304X Effect of different protein and limiting amino acid levels coupled with a supplement of chromium picolinate on lipid metabolism and carcass characteristics of pigs [Elektronische Daten] This study investigated the response of different dietary protein and limiting amino acid concentrations coupled with a supplement of chromium in growing-finishing pigs. Sixty Landrace × Yorkshire × Duroc bacon type pigs with an initial live weight of 33·08 (s.d. 4·80) kg were randomly assigned into six groups with an equal number of males and females. They were given diets containing proportionately 1·0, 1·1 or 1·2 of the National Research Council recommendation of crude protein and limiting amino acid (lysine and methionine) levels and coupled with supplementing chromium at 0 or 200 ng/kg in the form of chromium picolinate (Crpic). The experiment was completed when the pigs' live weight reached 120 kg. Experiment results indicated that different nutrient levels or Crpic supplement did not significantly affect pig growth (P > 0·05). However, both nutrient levels and Crpic supplementation increased y-globulin concentration (P < 0·05). In addition, Crpic supplement not only significantly reduced the backfat thickness, serum insulin level and VLDL-C + LDL-C concentration (P < 0·05) but also increased the loin-eye area and HDL-C concentration of pigs (P < 0·05). On the other hand, the particle sizes of HDL and VLDL were decreased and increased (P < 0·05), respectively. In addition, Crpic supplement increased the activities of adipose tissue lipogenesis related enzymes such as fatty acid synthetase, ATP-citrate cleavage enzyme and NADP-malic dehydrogenase (P < 0·05 to 0·001). In a similar manner, Crpic supplement increased the activities of adipose tissue lipoprotein lipase and serum lecithin-cholesterol acyltransferase (P < 0·05). However, the interactions of nutrient levels × Crpic supplementation were insignificant (P > 0·05). Results in this study demonstrated that chromium picolinate supplement created a beneficial effect but supplements of chromium coupled with high dietary protein and limiting amino acid levels were unnecessary for bacon-type pigs. Copyright © British Society of Animal Science 1998 amino acids nationallicence carcass composition nationallicence chromium nationallicence dietary protein nationallicence lipid metabolism nationallicence pigs nationallicence Lien T-F Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Wu C-P Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Lin B-H Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Wang B-J Department of Food Industry, National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Lu J-J Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Shiao T-Y Department of Food Industry, National Chiayi Institute of Technology, Chiayi, Taiwan, ROC Animal Science Cambridge University Press 67/3(1998-12), 601-607 1357-7298 67:3<601 1998 67 ASC https://doi.org/10.1017/S135772980003304X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S135772980003304X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lien T-F Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 700 1- Wu C-P Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 700 1- Lin B-H Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 700 1- Wang B-J Department of Food Industry, National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 700 1- Lu J-J Department of Animal Science, , National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 700 1- Shiao T-Y Department of Food Industry, National Chiayi Institute of Technology, Chiayi, Taiwan, ROC NATIONALLICENCE 773 0- Animal Science Cambridge University Press 67/3(1998-12), 601-607 1357-7298 67:3<601 1998 67 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge