动物营养学报 >

2012 >Issue 5: 926 - 932

DOI: https://doi.org/10.3969/j.issn.1006-267x.2012.05.018

研究简报

共轭亚油酸对蛋鸡生产性能、蛋壳质量和血清生化指标的影响

  • 刘雪兰 ,
  • 石天虹 ,
  • 井庆川 ,
  • 阎佩佩 ,
  • 魏祥法 ,
  • 刘瑞亭
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  • 山东省农业科学院家禽研究所, 济南 250023

收稿日期: 2011-11-25

  网络出版日期: 2012-04-29

基金资助

山东省自然科学基金资助项目(ZR2009DQ017)

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Dietary Conjugated Linoleic Acid Level Affects Performance, Eggshell Quality and Serum Biochemical Indices of Laying Hens

  • LIU Xuelan ,
  • SHI Tianhong ,
  • JING Qingchuan ,
  • YAN Peipei ,
  • WEI Xiangfa ,
  • LIU Ruiting
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  • Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan 250023, China

Received date: 2011-11-25

  Online published: 2012-04-29

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摘要

为了研究共轭亚油酸(CLA)对蛋鸡生产性能和蛋壳质量的影响及机理,试验选用40周龄健康、体重和产蛋率相近的海兰白蛋鸡480只,采用单因素试验设计,随机分为4组,每组3个重复,每个重复40只,试验组分别添加0.5%、1.0%和2.0%的CLA,对照组不添加,试验期8周。试验结束时,每组选6只采血并屠宰,测定血清中三碘甲腺原氨酸(T3)、四碘甲腺原氨酸(T4)、皮质醇、雌二醇(E2)、钙离子、磷离子含量和碱性磷酸酶(ALP)活性及肝脏肉毒碱棕榈酰转移酶(CPT-Ⅰ)活性。结果表明:1)各试验组蛋鸡生产性能与对照组均差异不显著(P>0.05)。2)各试验组蛋壳强度均显著大于对照组(P<0.05),蛋壳厚度均差异不显著(P>0.05)。3)2.0%CLA组蛋鸡血清T3、T4、皮质醇和E2含量显著高于对照组及0.5%和1.0%CLA组(P<0.05);各试验组蛋鸡血清钙、磷离子浓度与对照组差异不显著(P>0.05);0.5%和1.0%CLA组蛋鸡血清ALP活性显著高于对照组(P<0.05)。4)1.0%和2.0%CLA组蛋鸡肝脏CPT-Ⅰ活性显著低于对照组(P<0.05)。由此可见,在本试验条件下,饲粮添加1.0%的CLA能显著提高蛋鸡血清中ALP活性,并在一定程度上促进E2的分泌,显著提高蛋壳强度,且不影响蛋鸡的生产性能。

关键词： CLA; 生产性能; 蛋壳质量; 血清生化指标; ALP; 内分泌激素; CPT-Ⅰ

本文引用格式

刘雪兰 , 石天虹 , 井庆川 , 阎佩佩 , 魏祥法 , 刘瑞亭 . 共轭亚油酸对蛋鸡生产性能、蛋壳质量和血清生化指标的影响[J]. 动物营养学报, 2012 , (5) : 926 -932 . DOI: 10.3969/j.issn.1006-267x.2012.05.018

Abstract

This experiment was conducted to investigate the effects of the supplementation of conjugated linoleic acid (CLA) on the performance, eggshell quality, and its mechanism. Four hundred and eighty healthy 40-week-old Hy-Line White laying hens with similar body weight and laying rate were divided randomly into 4 groups with 3 replicates per group and 40 birds in each replicate. The control diet had no CLA, and the experimental diets contained 0.5%, 1.0% and 2.0% CLA, respectively. Eight weeks later, six of each group was slaughtered and the blood was collected to determine the contents of thiothyone (T3), tetraiodothyronine (T4), cortisol, estradiol (E2), Ca2+and P5+, the alkaline phosphatase activity (ALP) in serum, and the carnitine palmitoyltransterase (CPT-Ⅰ) activity in liver. The results showed as follows: 1) there was no significant difference in performance between the control group and experimental groups (P>0.05). 2) Compared with the control group, the eggshell strength in experimental groups was significantly improved (P<0.05), but there was no significant difference in eggshell thickness between the control group and experimental groups (P>0.05). 3) The contents of T3, T4, cortisol and E2 in serum of laying hens in 2.0% CLA group were significant higher than those in the other groups (P<0.05); there were no significant differences in the contents of calcium ions and inorganic phosphorus ions in serum of laying hens between the control group and experimental groups (P>0.05); compared with the control group, the ALP activity in serum of laying hens in experimental groups was significantly increased (P<0.05) except for 2.0% CLA group. 4) The CPT-Ⅰ activity in liver of laying hens was significantly lower than that in the control group (P<0.05). It is concluded that 1.0% CLA can significantly increase serum ALP activity, and improve serum E2 content, so it can significantly improve the eggshell strength, furthermore, it has no bad effect on performance of layers.

Key words： conjugated linoleic acid; performance; eggshell quality; serum biochemical indices; alkaline phosphates; endocrine hormones; carnation palmitoyltransterase

参考文献

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