Effects of Different Consists of Dietary Energy Supply on Nutrient Apparent Digestibility, Serum Biochemical Indices and Hormones Levels of Finishing Pigs

YU Changning, LI Yanjiao, ZHANG Bolin, LIN Meng, LI Jiaolong, ZHANG Lin, YANG Wenwei, GAO Feng, ZHOU Guanghong

doi:10.3969/j.issn.1006-267x.2015.03.030

2015 , Vol. 27 >Issue 3: 902 - 909

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.03.030

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Effects of Different Consists of Dietary Energy Supply on Nutrient Apparent Digestibility, Serum Biochemical Indices and Hormones Levels of Finishing Pigs

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1. College of Animal Science and Technology, Key Laboratory of Animal Origin Food Production and Safety Guarantee of Jiangsu Province, Synergetic Innovation Center of Food Safety and Nutrition, Nanjing Agricultural University, Nanjing 210095, China;
2. Center for Animal Disease Control and Prevention of Jintan, Jintan 213200, China

Received date: 2014-10-14

Online published: 2015-03-18

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Abstract

The aims of this study were to investigate the effects of different consists of dietary energy supply on nutrient apparent digestibility, serum biochemical indices and hormones levels of finishing pigs. All 72 castrated "Duroc × Landrace × Yorkshire" finishing barrows used in this experiment had similar initial body weight [(65.0±2.0) kg] and days of age, they were divided into three groups (groups A, B and C) of 3 replicates of 8 pigs and fed three iso-energetic and iso-nitrogenous diets, respectively. Groups A, B and C were fed with diets A, B and C, respectively. Diet A had 44.1% starch as a control and traditional finishing pigs diet. The content of starch in diets B and C was reduced about 15% and 30% based on the content of starch in the diet A, respectively. Diet A contained 44.1% starch, 5.9% ether extract and 12.6% neutral detergent fiber (NDF); diet B contained 37.6% starch, 9.5% ether extract and 15.4% NDF; and diet C contained 30.9% starch, 14.3% ether extract and 17.8% NDF. The preliminary trial lasted for 7 d, and the trial lasted for 28 d. The results showed as follow: 1) compared with group A, the apparent digestibility of dry matter (DM), crude protein (CP), ash and thyroxine (T₄) level in the serum of finishing pigs of group C were significantly decreased (P<0.05), and the glucose content, triiodothyronine (T₃) and insulin (INS) levels in the serum of group C were extremely significantly decreased (P<0.01), the lactate dehydrogenase(LDH) activity in the serum of group C was significantly increased (P<0.05). 2) Feeding different energy sources diets had no significant effects on the serum contents of albumin, globulin, urea nitrogen, and the activity of glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT) and alkaline phosphatase (ALP) (P>0.05). 3) Compared with group A, group B had no significant effects on nutrient apparent digestibility, serum biochemical indices and hormones levels (P>0.05) except serum T₄ level. It is concluded that excessively decreased the starch level, increased the contents of lipid and NDF in diet have effects on the secretion of hormones in the serum and decrease nutrient apparent digestibility in finishing pigs.

Key words： energy supply; finishing pigs; apparent digestibility; biochemical indices; serum hormones

Cite this article

YU Changning, LI Yanjiao, ZHANG Bolin, LIN Meng, LI Jiaolong, ZHANG Lin, YANG Wenwei, GAO Feng, ZHOU Guanghong . Effects of Different Consists of Dietary Energy Supply on Nutrient Apparent Digestibility, Serum Biochemical Indices and Hormones Levels of Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2015 , 27(3) : 902 -909 . DOI: 10.3969/j.issn.1006-267x.2015.03.030

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