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草业学报 ›› 2020, Vol. 29 ›› Issue (9): 179-189.DOI: 10.11686/cyxb2020080

• 研究论文 • 上一篇    下一篇

鲜饲金荞麦对热应激蛋鸡生产性能、蛋品质和血清指标的影响

张蓉1, 陈光吉1,2, 尚以顺1,*, 李世歌1, 李小冬1, 熊先勤1,2, 牟琼1, 王小利1, 冉伟男1, 班宋智3   

  1. 1.贵州省农业科学院草业研究所,贵州 贵阳 550006;
    2.贵州阳光草业科技有限责任公司,贵州 独山 558200;
    3.长顺县送智养殖场,贵州 长顺 550707
  • 收稿日期:2020-02-26 修回日期:2020-04-13 出版日期:2020-09-20 发布日期:2020-09-20
  • 通讯作者: E-mail: 2892486467@qq.com
  • 作者简介:张蓉(1991-),女,贵州思南人,研究实习员,硕士。E-mail: 974213739@qq.com
  • 基金资助:
    贵州省农业科学院青年基金项目(黔农科院青年基金[2019]24号),贵州省科技计划项目(黔科合成果[2017]4117),贵州省草业研究所创新项目([2018]01号),贵州省科研机构服务企业行动计划项目(黔科合服企[2018]4001号)和贵州省科研机构创新能力建设专项资金(黔科合服企[2019] 4010号)资助

Effects of fresh feeding Fagopyrum dibotrys on performance, egg quality and serum index of heat stressed laying hens

ZHANG Rong1, CHEN Guang-ji1,2, SHANG Yi-shun1,*, LI Shi-ge1, LI Xiao-dong1, XIONG Xian-qin1,2, MU Qiong1, WANG Xiao-li1, RAN Wei-nan1, BAN Song-zhi3   

  1. 1. Guizhou Institute of Prataculture, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;
    2. Guizhou Sunshine Grass Science and Technology Co., Ltd, Dushan 558200, China;
    3. Changshun County Songzhi Farm, Changshun 550707, China
  • Received:2020-02-26 Revised:2020-04-13 Online:2020-09-20 Published:2020-09-20

摘要: 本试验旨在研究鲜饲金荞麦对热应激条件下的长顺绿壳蛋鸡生产性能、蛋品质和血清指标的影响。采用完全随机试验设计,将300只鸡分为5个处理组:C组(基础饲粮)、T1组(基础饲粮+5%金荞麦)、T2组(基础饲粮+10%金荞麦)、T3组(基础饲粮+15%金荞麦)和T4组(基础饲粮+20%金荞麦),每个处理5个重复,每个重复12只鸡。将所有用于试验的鸡只暴露于(31.4±1.5) ℃的高温环境下发生自然热应激。记录和统计每月平均采食量、蛋重和产蛋数,并测定试验末各处理鸡蛋的表观品质、全蛋氨基酸和蛋黄脂肪酸含量,以及蛋鸡的血清激素水平、炎症因子和内毒素浓度。结果表明,T1组在试验第2个月的产蛋率显著高于其余处理组(P<0.05),C、T1和T2的产蛋率在第3个月和全期差异不显著(P>0.05);C和T1的蛋黄颜色等级显著低于其余处理组(P<0.05);T3组全蛋中的异亮氨酸含量最高,T3和T4组的蛋氨酸含量较高(P<0.05),而C组的多不饱和脂肪酸显著高于其他处理组(P<0.05);C组蛋鸡的肾上腺皮质激素和皮质酮浓度显著高于试验组(P<0.05),相反,C组的皮质酮和黄体生成素显著低于试验组(P<0.05),试验组白细胞介素-6、肿瘤坏死因子α和血清内毒素均显著低于对照组(P<0.05)。因此,饲粮中添加10%的鲜饲金荞麦对热应激条件下长顺绿壳蛋鸡的平均产蛋率无负面影响,加深了蛋黄颜色;改善了全蛋氨基酸组成和含量,但对蛋黄脂肪酸组成有负面影响;提高了血清促卵泡素和黄体生成素含量;降低了血清炎症因子和内毒素水平。

关键词: 金荞麦, 热应激, 生产性能, 长顺绿壳蛋鸡

Abstract: The objective of this research was to determine the effects on laying performance, egg quality and serum hormone levels, of feeding fresh Fagopyrum dibotrys as part of the diet of Changshun Blue-Eggshell laying hens. Laying hens (n=300) were divided into five treatment groups with a completely randomized design: Control (group C, basic diet), T1 (basic diet+5% F. dibotrys), T2 (basic diet+10% F. dibotrys), T3 (basic diet+15% F. dibotrys) and T4 (basic diet+20% F. dibotrys), with 5 replicates per treatment and 12 chickens per replicate. All experimental laying hens were exposed to (31.4±1.5) ℃ to induce natural heat stress. Data collected included: The average monthly feed intake, egg weight and number of the laying eggs, the apparent quality of eggs, the content of amino acids and fatty acids in the whole egg, the levels of serum hormones, inflammatory factors and endotoxin concentration at the end of the experiment. It was found that: 1) The laying rate of the T1 group in the second month was significantly higher than that of other groups (P<0.05), and there was no significant difference between the laying rates of groups C, T1 and T2 in the third month and the whole period (P>0.05). 2) The egg content of isoleucine was the highest in T3 group, but higher in T3 and T4 groups than the others (P<0.05), but the polyunsaturated fatty acids in group C were significantly higher than those in other treatment groups (P<0.05). 3) The concentrations of adrenocorticotropic hormone and corticosterone in group C were significantly higher than those in the experimental groups (P<0.05); conversely, the levels of corticosterone and luteinizing hormone in group C were significantly lower than those in the experimental group (P<0.05), and the levels of IL-6, tumor necrosis factor α and serum endotoxin in the experimental group were significantly lower than those in the control group (P<0.05). Thus, it was found that adding 10% F. dibotrys to the diet had no negative effect on the average egg production rate, deepened the yolk color, improved the amino acid composition and content of the whole egg, but had a negative effect on the fatty acid composition of the yolk, increased the serum FSH and LH content, and reduced the serum inflammatory factor and endotoxin level.

Key words: Fagopyrum dibotrys, heat stress, performance, Changshun Blue-Eggshell laying hen