中国畜牧兽医

• 动物营养与饲料科学 • 上一篇    下一篇

酸化剂对鲜饲料保质效果及生长期水貂腹泻的影响

王凯英,鲍坤,徐超,刘晗璐,岳志刚,李光玉   

  1. (中国农业科学院特产研究所,特种经济动物分子生物学国家重点实验室,吉林长春 130112)
  • 收稿日期:2013-07-02 出版日期:2014-03-20 发布日期:2014-05-15
  • 通讯作者: 李光玉,研究员,研究方向:经济动物营养与饲料学。E-mail:tcslgy@126.com
  • 作者简介:王凯英(1975—),男,吉林人,硕士,副研究员,研究方向:经济动物营养与生物学。
  • 基金资助:

    国家公益性行业(农业)科研专项(200903014);吉林省科技发展计划重点项目(20110230)。

Effects of Acidifier on Fresh-keeping of Feeds and Diarrhea in Growing Minks

WANG Kai-ying, BAO Kun, XU Chao, LIU Han-lu, YUE Zhi-gang, LI Guang-yu   

  1. State Key Laboratory of Specical Economic Animal Molecular Biology, Institute of Special Animal and Plant Science, CAAS, Changchun 130112, China)
  • Received:2013-07-02 Online:2014-03-20 Published:2014-05-15

摘要: 本试验旨在研究不同酸化剂及其水平对鲜饲料保质效果与生长期水貂腹泻的影响。选用100只雄性水貂,随机分为10组,每组10只,Ⅰ组为对照组饲喂基础日粮,Ⅱ~Ⅳ组分别在基础日粮中添加0.4%、0.6%、0.8%磷酸,Ⅴ~Ⅶ组分别在基础日粮中添加0.5%、1.0%、1.5%柠檬酸,Ⅷ~Ⅹ组分别在基础日粮中添加0.5%、1.0%、1.5%乳酸。试验期62 d。结果表明,酸化剂可降低长期冷冻保存鲜饲料的酸值(AV)、羰基值(COV)和挥发性盐基氮(TVBN)水平,抑制脂肪、蛋白质氧化变质过程,提高鲜饲料保质水平,其中添加1.5%乳酸保质效果最好;饲料酸化剂对37 ℃条件下鲜饲料中大肠杆菌菌落数影响显著,1 h时1.5%柠檬酸组大肠杆菌菌落数最低(P<0.01),4 h时0.4%磷酸组大肠杆菌菌落数最低(P<0.05),8 h时1.5%乳酸组大肠杆菌菌落数最低(P<0.05);应用饲料酸化剂可极显著降低生长期水貂腹泻指数、腹泻率(P<0.01),对缓解夏季水貂腹泻意义重大。提示,水貂日粮中添加1.5%乳酸综合效果较好。

关键词: 酸化剂; 水貂; 饲料保质; 腹泻

Abstract: This experiment was conducted to study the effects of different kinds and levels of acidifier on the fresh-keeping of feeds and diarrhea of growing mink. 100 male minks were randomly divided into 10 groups and 10 minks in each group.Ⅰgroup was fed basal diet.Ⅱ to Ⅹ groups were supplementation with different kinds and levels of acidifier in basal diet, that were 0.4% (Ⅱ), 0.6% (Ⅲ)and 0.8% (Ⅳ) phosphoric acid, 0.5% (Ⅴ), 1.0% (Ⅵ)and 1.5% (Ⅶ) citric acid, 0.5%(Ⅷ), 1.0% (Ⅸ) and 1.5% (Ⅹ) lactic acid, respectively.The trial lasted for 62 days.The results indicated that acidifier could reduce the acid value (AV), carbonyl value (COV) and total volatile basic nitrogen (TVBN) levels of fresh feeds, restrain the oxidation metamorphic process of fat and protein and improve the preservation ability of fresh feeds, and the 1.5% lactic acid was the best one.The number of Escherichia coli (37 ℃) were significantly affected by dietary acidifier, when tested the number of Escherichia coli at 1 hour, 1.5% citric group was the lowest one (P<0.01), at 4 h, the number of Escherichia coli was the lowest in 0.4% phosphoric acid group (P<0.05), at 8 h, the lowest Escherichia coli number was found in 1.5% lactic acid group (P<0.05).Supplementation with acidifier could extremely significantly reduce the acidifier index and diarrhea rate of growing minks (P<0.01), so it had a great significance to relieve the diarrhea of minks in summer.In conclusion, the best level of lactic acid was 1.5% in diet for minks.

Key words: acidifier; mink; fresh-keeping of feeds; diarrhea