Effects of Selenium and Vitamin E on Nutrient Apparent Digestibility, Nitrogen Balance, Energy Metabolism and Blood Biochemical Indices of Beef Cattle

ZHANG Shuanlin; YUAN Xia; XU Yaguang; NIE Yumei; WU Jinxiao; CHENG Jianguo; YANG Zhiling; HUANG Yingxiang

doi:10.3969/j.issn.1006-267x.2013.06.013

2013 , Vol. 25 >Issue 6: 1219 - 1228

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.06.013

Ruminant Nutrition

Effects of Selenium and Vitamin E on Nutrient Apparent Digestibility, Nitrogen Balance, Energy Metabolism and Blood Biochemical Indices of Beef Cattle

ZHANG Shuanlin ,
YUAN Xia ,
XU Yaguang ,
NIE Yumei ,
WU Jinxiao ,
CHENG Jianguo ,
YANG Zhiling ,
HUANG Yingxiang

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1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China;
2. Shanxi Feed and Drug Inspection Station, Taiyuan 030027, China

Received date: 2012-12-11

Online published: 2013-05-15

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Abstract

This study was conducted to investigate the effects of selenium and vitamin E on nutrient apparent digestibility, nitrogen balance, energy metabolism and blood biochemical indices of beef cattle. Four Simmental steers [average body weight was (500±20) kg, 5 years of age] with permanent rumen fistulas were used in a 4×4 two-factor design, and fed the diets supplemented with 0, 0.1, 0.2 and 0.3 mg/kg selenium and 0, 30, 60 and 90 IU/kg vitamin E, respectively. There were 16 diets in all. Selenium (mg/kg)/vitamin E (IU/kg) levels were 0/0 (group 1), 0.1/0 (group 2), 0.2/0 (group 3), 0.3/0 (group 4), 0/30 (group 5), 0.1/30 (group 6), 0.2/30 (group 7), 0.3/30 (group 8), 0/60 (group 9), 0.1/60 (group 10), 0.2/60 (group 11), 0.3/60 (group 12), 0/90 (group 13), 0.1/90 (group 14), 0.2/90 (group 15) and 0.3/90 (group 16), respectively. Changes of nutrient apparent digestibility, nitrogen balance, energy metabolism and blood biochemical indices of beef cattle were analyzed. The results showed as follows: 1) the digestibility of OM in group 14 was significantly higher than that in group 1(P<0.05), the digestibility of CP and DM in group 8 was significantly higher than that in group1 (P<0.05), EE digestibility in groups 11 and 12 was significantly higher than that in groups 1, 2 and 3 (P<0.05), NFE digestibility in groups 8, 12 and 14 was significantly higher than that in group 1 (P<0.05), NDF digestibility was not affected (P>0.05), and ADF digestibility in groups 4, 7, 8, 12 and 14 was significantly higher than that in group 1 (P<0.05). 2) Digestive nitrogen in group 8 was significantly higher than that in group 1 (P<0.05), and retention nitrogen in groups 4, 8 and 12 was significantly higher than that in groups 1, 2, 5 and 9 (P<0.05). 3) Fecal energy, gaseous energy and energy retention were not significantly affected (P>0.05), but digestible energy and metabolizable energy in groups 4 and 8 were significantly higher than those in group 1 (P<0.05). 4) Serum glucose, total protein and urea nitrogen contents were not significantly affected (P>0.05), but albumin content and GSH-Px activity in groups 4, 8 and 12 were significantly higher than those in group 1 (P<0.05), and GPT activity was significantly higher than that in the other groups (P<0.05 or P<0.01), GOT activity in groups 8, 12, 13 and 14 was significantly higher than that in the other groups (P<0.05), T₄ content in groups 1, 9 and 13 was significantly higher than that in the other groups (P<0.05), and T₃ content in group 12 was higher than that in the other groups except for groups 4, 8 and 15 (P<0.05). The results indicate that selenium and vitamin E have a positive influence on nutrient apparent digestibility, nitrogen balance and energy metabolism. The optimum selenium and vitamin E supplemental levels are 0.3 mg /kg and 30 IU/kg, respectively.

Key words： selenium; vitamin E; apparent digestibility; nitrogen balance; energy metabolism; biochemical indices; Simmental steer

Cite this article

ZHANG Shuanlin , YUAN Xia , XU Yaguang , NIE Yumei , WU Jinxiao , CHENG Jianguo , YANG Zhiling , HUANG Yingxiang . Effects of Selenium and Vitamin E on Nutrient Apparent Digestibility, Nitrogen Balance, Energy Metabolism and Blood Biochemical Indices of Beef Cattle[J]. Chinese Journal of Animal Nutrition, 2013 , 25(6) : 1219 -1228 . DOI: 10.3969/j.issn.1006-267x.2013.06.013

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