| 不同光照时间对蛋鸭产蛋及生殖激素的影响 |
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| 引用本文： | 江丹莉,潘建秋,杨博,孙裕彬,钱隆,田允波,黄运茂.不同光照时间对蛋鸭产蛋及生殖激素的影响[J].仲恺农业工程学院学报,2018,31(2):37-41. |
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| 作者姓名： | 江丹莉 潘建秋 杨博 孙裕彬 钱隆 田允波 黄运茂 |
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| 作者单位： | 广东省水禽健康养殖重点实验室;仲恺农业工程学院动物科技学院 |
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| 摘 要： | 为研究不同光照时间对蛋鸭产蛋及生殖内分泌的影响，随机选取１２０只３３周龄健康蛋鸭，平均分成Ａ、Ｂ、Ｃ和Ｄ组，第１～４２天，光照程序分别为１１.５Ｌ∶１３.５Ｄ、１４Ｌ∶１０Ｄ、１６Ｌ∶８Ｄ和１８Ｌ∶６Ｄ（Ｌ：光照ｌｉｇｈｔ，Ｄ：黑暗ｄａｒｋ）；第４３～７０天，光照程序均为１８Ｌ∶６Ｄ，试验过程中统计产蛋量、蛋质量、耗料量，在第４２、７０天采血测定促黄体素、雌二醇、孕酮、褪黑素等血清生殖激素水平．结果表明，第１～４２天试验期间，Ｄ组产蛋率明显高于其它３组，平均日产蛋数极显著高于其它３组（Ｐ＜０.０１），平均日产蛋数Ａ、Ｂ、Ｃ各组间差异不显著（Ｐ＞０.０５）；Ｄ组平均蛋质量为４组中最低，但各组间差异不显著（Ｐ＞０.０５），Ｄ组料蛋比最低；第４２天测定生殖激素发现，除Ｄ组促黄体素和孕酮水平显著高于Ｂ组，孕酮水平显著高于Ａ组（Ｐ＜０.０５）外，其余各组间的血清生殖激素水平差异不显著（Ｐ＞０.０５）．第４３～７０天试验期间，各组的产蛋率、平均日产蛋数、平均蛋重和料蛋比差异不显著（Ｐ＞０.０５）；第７０天测定血清生殖激素水平，各组间差异不显著（Ｐ＞０.０５）．试验结果表明，１８ｈ持续光照能显著提高蛋鸭产蛋率和饲料回报率，提高生殖激素水平
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| 收稿时间： | 2018-07-06 |
Effects of different lighting time on the egg production andreproductive hormone of duck |
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| Abstract: | This experiment was conducted to study the effects of different lighting time on egg productionand reproductive endocrine． 120 healthy ducklings of 33 weeks age were randomly selected and dividedinto group A，B，C and D on average． 1st －42nd day，the light program of group A，group B，group Cand group D was taken as 11. 5L∶13. 5D，14L∶ 10D，16L∶ 8D and 18L∶ 6D( L: light，D: dark) ; 43rd －70th day，four groups of light programs were 18L∶ 6D． Egg production，egg quality and feed consumptionwere statisticsed． The serum reproductive hormone such as luteinizing hormone，progesterone，estradioland melatonin levels were determined by blood sampling in the 42nd and 70th days． The results showedthat，1st －42nd day，The egg production rate of group D was higher than other three groups． The averagenumber of eggs was significantly higher than that of the other three groups ( P ＜0. 01) ． But there was nosignificant difference between groups A，B and C ( P ＞0. 05) ． The average egg quality in group D wasthe lowest among the four groups，but there was no significant difference among the groups ( P ＞0. 05) ．And the feed ratio in group D was the lowest． The level of luteinizing hormone and progesterone in groupD was significantly higher than those in group B，progesterone in group D was significantly higher thanthose in group A ( P ＜0. 05) ． And there was no significant difference in serum reproductive hormone me-latonin levels between other groups ( P ＞0. 05) ． During 43rd －70th day，there were no significant differ-ences in egg production rate，average number of eggs per day，average egg weight and feed ratio ( P ＞0. 05) ． The serum reproductive hormone levels were determined by the 70th day，and the differences be-tween the groups were not significant ( P ＞0. 05) ． This experiment found that the continuous illuminationof 18 h could significantly improve egg producton and feed ratio，improve the reproductive hormone level． |
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