中国畜牧兽医 ›› 2023, Vol. 50 ›› Issue (10): 3976-3984.doi: 10.16431/j.cnki.1671-7236.2023.10.011

• 营养与饲料 • 上一篇    下一篇

饲粮赖氨酸水平对22~33周龄山麻鸭产蛋性能及卵泡发育的影响

崔希羽1, 郭亮1, 夏伟光2, 张亚男2, 王爽2, 吕艳涛3, 郑春田1,2, 陈伟2   

  1. 1. 天津农学院动物科学与动物医学学院, 天津市农业动物繁殖与健康养殖重点实验室, 天津 300392;
    2. 广东省农业科学院动物科学研究所, 猪禽种业全国重点实验室, 农业农村部华南动物营养与饲料重点实验室, 广东省动物育种与营养公共实验室, 广东省畜禽育种与营养研究重点实验室, 广州 510640;
    3. 仲恺农业工程学院动物科技学院/健康养殖创新研究院, 广州 510550
  • 收稿日期:2023-02-02 出版日期:2023-10-05 发布日期:2023-09-26
  • 通讯作者: 郑春田;陈伟 E-mail:zhengcht@163.com;cwei010230@163.com
  • 作者简介:崔希羽,E-mail:3465699185@qq.com
  • 基金资助:
    财政部和农业农村部—国家现代农业产业技术体系(CARS-42-13);广东省水禽产业技术创新团队(2022KJ137);科技部外专局项目(QNL20200130001);畜禽育种国家重点实验室开放课题(2021GZ05、2021GZ06);广东省农业科学院杰出学科团队项目(202106TD);江门市基础与应用重点项目(2020030102870009145);广州市基础与应用基础研究项目(202201011862)

Effects of Dietary Lysine on Laying Performance and Follicular Development in 22-33 Week Old Shanma Ducks

CUI Xiyu1, GUO Liang1, XIA Weiguang2, ZHANG Yanan2, WANG Shuang2, LYU Yantao3, ZHENG Chuntian1,2, CHEN Wei2   

  1. 1. Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300392, China;
    2. Institute of Animal Science, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Swine and Poultry Breeding Industry, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Pulic Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China;
    3. College of Animal Science and Technology, Innovative Institute of Animal Healthy Breeding, Zhongkai University of Agriculture and Engineering, Guangzhou 510550, China
  • Received:2023-02-02 Online:2023-10-05 Published:2023-09-26

摘要: 【目的】探讨饲粮赖氨酸水平对产蛋高峰期山麻鸭产蛋性能、蛋品质、血浆生化指标及卵泡发育的影响,确定产蛋高峰期山麻鸭赖氨酸需要量。【方法】选取体重相近、健康状况良好、产蛋率一致的22周龄山麻鸭540羽,随机分为6组,每组6个重复,每个重复15只鸭,分别饲喂赖氨酸水平为 0.75%、0.80%、0.85%、0.90%、0.95%和1.00%的试验饲粮。试验期为12周。记录各重复每天产蛋个数、产蛋重量,计算各阶段产蛋率、日产蛋重和料蛋比。试验期末从每重复采集3枚鸭蛋,测定蛋品质指标;并从每重复选择2只体重接近重复平均体重的试验鸭翅静脉采血后屠宰,分离并收集卵巢、各阶段卵泡和输卵管,分别测定其重量、数量及长度。【结果】饲粮赖氨酸水平显著影响22~24周龄山麻鸭产蛋率、日产蛋重和料蛋比(P<0.05),其中0.85%赖氨酸组产蛋率和日产蛋重最高,料蛋比最低;除蛋形指数外,饲粮赖氨酸水平对其他蛋品质指标均无显著影响(P>0.05);饲粮赖氨酸水平对山麻鸭血浆雌二醇(E2)和促黄体生成素(LH)浓度无显著影响(P>0.05),但显著影响血浆促卵泡激素(FSH)浓度,其中0.85%赖氨酸组血浆FSH浓度最低(P<0.05);饲粮赖氨酸水平对山麻鸭输卵管和卵巢重量以及输卵管长度均无显著影响(P>0.05);0.85%赖氨酸组山麻鸭小黄卵泡数量和总卵泡数量显著高于其他各组(P<0.05);随饲粮赖氨酸水平提高,山麻鸭大黄卵泡数量和血浆尿酸含量均呈现二次曲线变化规律(P<0.05),经拟合饲粮赖氨酸水平为0.87%时,大黄卵泡数量最多,血浆尿酸含量最低。【结论】以生产性能、卵泡发育和血浆尿酸含量为判定指标,22~33周龄山麻鸭饲粮赖氨酸适宜水平为0.85%~0.87%。

关键词: 赖氨酸; 蛋鸭; 产蛋性能; 蛋品质; 卵泡发育

Abstract: 【Objective】 This experiment was conducted to investigate the effects of lysine levels on laying performance,egg quality,plasma biochemical index and follicle development in peak-laying Shanma ducks,so as to evaluate the lysine requirement of peak-laying ducks.【Method】 Five hundred and forty Shanma ducks with similar body weight were randomly assigned into 6 groups with 6 replicates of 15 ducks each.The ducks were fed diets with six lysine levels (0.75%,0.80%,0.85%,0.90%, 0.95% and 1.00%) for 12 weeks.The number and weight of eggs in each repeated per day were recorded.The egg laying rate,daily egg weight and feed-egg ratio were calculated at the end of the experiment.Three eggs were collected from each repeat to determine quality index,and two experimental ducks whose weight close to the average weight of each repeat were selected,slaughtered after collecting blood from wing vein.The ovaries,follicles and fallopian tubes were separated and collected to determine the weight,number and length.【Result】 Dietary lysine levels significantly affected the egg production,daily egg mass and feed/egg mass of 22-24 week old Shanma ducks (P<0.05),egg production and daily egg mass were highest and feed/egg mass was lowest in the 0.85% lysine group.Except for the egg shape index, the other egg quality indicators had no siginificant difference (P>0.05). Dietary lysine levels had no significant effect on plasma estradiol (E2) and luteinizing hormone (LH) concentrations in Shanma ducks (P>0.05),but significantly affected plasma follicle stimulating hormone (FSH) concentrations (P<0.05),plasma FSH concentration was lowest in the 0.85% lysine group.Dietary lysine levels had no significant effect on the weight of oviducts and ovaries,as well as the length of oviducts in Shanma ducks (P>0.05).The number of small yellow follicles and total follicles in the 0.85% lysine group were significantly higher than those in other groups (P<0.05).With the increase of dietary lysine level,the number of large yellow follicles and plasma uric acid content showed a quadratic curve (P<0.05).When the dietary lysine level was 0.87%,the number of large yellow follicles was the highest and plasma uric acid content was lowest.【Conclusion】 In summary,based on production performance,follicular development and plasma uric acid content,the appropriate level of dietary lysine for 22-33 week old Shanma ducks was 0.85%-0.87%.

Key words: lysine; laying ducks; laying performance; egg quality; follicular development

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