《中国畜牧兽医》 ›› 2018, Vol. 45 ›› Issue (10): 2716-2723.doi: 10.16431/j.cnki.1671-7236.2018.10.008

• 动物营养与饲料科学 • 上一篇    下一篇

1,25-二羟维生素D3对肉鸡生长性能、骨骼矿化及小肠NaPi-Ⅱb和VDR mRNA表达的影响

张宁1,2, 杨雪1,2, 张金龙1,2, 王志祥1, 韩进诚2, 卢红梅3, 陈村年3   

  1. 1. 河南农业大学牧医工程学院, 郑州 450002;
    2. 商丘师范学院生物与食品学院, 商丘 476000;
    3. 河南正本清源科技发展股份有限公司, 商丘 476000
  • 收稿日期:2018-03-15 出版日期:2018-10-20 发布日期:2018-10-20
  • 通讯作者: 韩进诚 E-mail:j.c.han@hotmail.com
  • 作者简介:张宁(1991-),女,河南巩义人,硕士生,研究方向:家禽营养与饲料科学,E-mail:351072770@qq.com
  • 基金资助:

    国家自然科学基金项目(31101732、U1704107);河南省创新型科技人才队伍建设工程项目(CXTD20130058)

Effects of 1, 25-dihydroxycholecalciferol on Growth Performance, Bone Mineralization and mRNA Expression of NaPi-Ⅱb and VDR in Small Intestine of Broiler

ZHANG Ning1,2, YANG Xue1,2, ZHANG Jinlong1,2, WANG Zhixiang1, HAN Jincheng2, LU Hongmei3, CHEN Cunnian3   

  1. 1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
    2. College of Biology and Food Science, Shangqiu Normal University, Shangqiu 476000, China;
    3. Henan Zhengbenqingyuan Technology Development Co., Ltd., Shangqiu 476000, China
  • Received:2018-03-15 Online:2018-10-20 Published:2018-10-20

摘要:

试验旨在研究不同水平1,25-二羟基维生素D3(1,25-(OH)2-D3)对1~14日龄肉鸡生长性能、骨骼矿化及促进十二指肠磷吸收关键基因表达的影响。将180只1日龄罗斯308肉鸡分入3个处理,每处理6个重复,每重复10只。3个处理组分别饲喂3种日粮:在基础日粮中分别添加0、5、10 μg/kg 1,25-(OH)2-D3,试验期14 d。14日龄屠宰肉鸡,剥离股骨、胫骨及十二指肠1/2处的黏膜;测定肉鸡的生长性能、骨骼矿化相关指标,分析Ⅱb型磷酸钠转运蛋白(NaPi-Ⅱb)、细胞核维生素D受体(nVDR)和细胞膜维生素D受体(mVDR)基因表达情况。结果显示:与基础日粮组相比,添加5 μg/kg 1,25-(OH)2-D3组肉鸡体增重、采食量、料重比、股骨和胫骨各指标(重量、长度、直径、灰分重量、灰分含量、钙、磷含量)及十二指肠NaPi-Ⅱb、nVDR和mVDR mRNA表达量均未发生显著变化(P>0.05);添加10 μg/kg 1,25-(OH)2-D3显著降低了肉鸡体增重、采食量、股骨和胫骨各指标及十二指肠NaPi-Ⅱb、nVDR和mVDR mRNA表达量(P<0.05),同时料重比显著增加(P<0.05)。综合上述结果,在基础日粮中添加5 μg/kg 1,25-(OH)2-D3不会影响1~14日龄肉鸡的生长、骨骼矿化及十二指肠磷吸收关键基因表达;但添加量增至10 μg/kg会显著抑制1~14日龄肉鸡生长、骨骼发育,影响十二指肠NaPi-Ⅱb和VDR mRNA表达。

关键词: 1; 25-(OH)2-D3; 肉鸡; 生长性能; 骨骼矿化; NaPi-Ⅱb; nVDR; mVDR

Abstract:

The experiment was aimed to study the effects of 1,25-dihydroxycholecalciferol (1,25-(OH)2-D3) on growth performance,bone mineralization and duodenal phosphate transport gene expression.A total of 180 broilers (1 day old)were divided into 3 treatments with 6 replicates per treatment of 10 chickens per replicate.Three levels of 1,25-(OH)2-D3 were added to the basic diet:0,5 and 10 μg/kg,respectively.Broilers were slaughtered at 14 days of age,and femur,tibia,and duodenal mucosa were collected.Growth performance,bone mineralization and mRNA expressions of sodium phosphate transporter (NaPi-Ⅱb),nuclear vitamin D receptor (nVDR) and membrane vitamin D receptor (mVDR) were analyzed.The results showed that:Compared with the basic group,addition 5 μg/kg 1,25-(OH)2-D3 did not significantly affect the body weight gain,feed intake,feed and gain ration,and the weight,length,diameter,ash weight,ash content,calcium content,and phosphorus content of femur and tibia,and mRNA expression of NaPi-Ⅱb,nVDR and mVDR in the duodenum of broilers from 1 to 14 days of age (P > 0.05).Adding 10 μg/kg 1,25-(OH)2-D3 significantly reduced body weight gain,feed intake and feed conversion,the quality of femur and tibia,and the mRNA expression of NaPi-Ⅱb,nVDR,and mVDR in the duodenum of broilers (P < 0.05).In conclusion,adding 5 μg/kg 1,25-(OH)2-D3 to normal diets did not affect the growth,bone mineralization or the mRNA expression of NaPi-Ⅱb,nVDR and mVDR in duodenum of broilers.However,the addition of 10 μg/kg 1,25-(OH)2-D3 reduced the growth performance,skeletal mineralization and inhibits duodenal NaPi-Ⅱb,nVDR and mVDR gene expression at the transcriptional level.

Key words: 1,25-(OH)2-D3; broiler chicken; growth performance; bone mineralization; NaPi-Ⅱb; nVDR; mVDR

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