动物营养学报 >

2021 , Vol. 33 >Issue 7: 4194 - 4200

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.07.060

研究简报 SHORT COMMUNICATION

二甲酸钾对育成期公貂生长性能、养分表观消化率、十二指肠消化酶活性和粪便污染指标的影响

  • 王群 ,
  • 宇晓军 ,
  • 李丹丹 ,
  • 王光 ,
  • 王利华
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  • 青岛农业大学动物科技学院, 青岛 266109
王群(1996-),女,山东烟台人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:839634058@qq.com

收稿日期: 2020-12-28

  网络出版日期: 2021-07-06

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Effects of Potassium Diformate on Growth Performance, Nutrient Apparent Digestibilities, Duodenal Digestive Enzyme Activities and Fecal Contamination Indexes of Growing Male Minks

  • WANG Qun ,
  • YU Xiaojun ,
  • LI Dandan ,
  • WANG Guang ,
  • WANG Lihua
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  • College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2020-12-28

  Online published: 2021-07-06

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摘要

本试验旨在研究二甲酸钾对育成期公貂生长性能、养分表观消化率、十二指肠消化酶活性和粪便污染指标的影响。试验选用65日龄体重[（1 159.05±18.47） g]相近的育成期白色公貂120只，随机分为6组，每组10个重复，每个重复2只。Ⅰ组（对照组）饲喂基础饲粮，Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组分别在基础饲粮中添加1.5、3.0、4.5、6.0、7.5 g/kg的二甲酸钾。预试期7 d，正试期60 d，前30 d为试验Ⅰ期，后30 d为试验Ⅱ期。结果表明：1）试验Ⅱ期，与对照组相比，Ⅱ、Ⅲ、Ⅳ组的料重比显著降低（P<0.05）。2）试验Ⅰ期，与对照组相比，Ⅳ、Ⅴ、Ⅵ组的干物质和粗蛋白质表观消化率显著升高（P<0.05）。试验Ⅱ期，与对照组相比，Ⅱ、Ⅲ、Ⅳ、Ⅴ组的干物质表观消化率显著升高（P<0.05），Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组的粗蛋白质表观消化率显著升高（P<0.05）。3）与对照组相比，Ⅱ、Ⅲ、Ⅳ组的十二指肠pH显著降低（P<0.05）；Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组的十二指肠胰蛋白酶活性显著提高（P<0.05），且Ⅲ组显著高于Ⅳ、Ⅴ、Ⅵ组（P<0.05）。4）试验Ⅰ期，与对照组相比，Ⅳ组的粪便中氨氮含量显著降低（P<0.05）。试验Ⅱ期，与对照组相比，Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组的粪便中总氮含量显著降低（P<0.05）。由此可见，饲粮中添加3.0 g/kg的二甲酸钾能够改善育成公貂的饲料效率和养分表观消化率，提高十二指肠胰蛋白酶活性，降低粪便中氨氮和总氮含量。

关键词： 水貂; 生长性能; 养分表观消化率; 消化酶活性; 粪便

本文引用格式

王群 , 宇晓军 , 李丹丹 , 王光 , 王利华 . 二甲酸钾对育成期公貂生长性能、养分表观消化率、十二指肠消化酶活性和粪便污染指标的影响[J]. 动物营养学报, 2021 , 33(7) : 4194 -4200 . DOI: 10.3969/j.issn.1006-267x.2021.07.060

Abstract

This experiment was conducted to study the effects of potassium diformate on growth performance, nutrient apparent digestibilities, duodenal digestive enzyme activities and fecal contamination indexes of growing male minks. A total of 120 healthy 65-day-old growing white male minks with similar body weight of (1 159.05±18.47) g were selected and divided into 6 groups with 10 replicates in each group and 2 minks in each replicate. Minks in group Ⅰ (control group) were fed a basal diet, and the others in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ were fed the basal diet supplemented with 1.5, 3.0, 4.5, 6.0 and 7.5 g/kg potassium diformate, respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 60 days. The first 30 days was period Ⅰ, and the last 30 days was period Ⅱ. The results showed as follows:1) in period Ⅱ, compared with the control group, the feed to gain ratio of groups Ⅱ, Ⅲ, Ⅳ was significant decreased (P<0.05). 2) In period Ⅰ, compared with the control group, the apparent digestibilities of dry matter and crude protein of groups Ⅳ, Ⅴ and Ⅵ were significant increased (P<0.05). In period Ⅱ, compared with the control group, the dry matter apparent digestibility of groups Ⅱ, Ⅲ, Ⅳ and Ⅴ was significant increased (P<0.05), and the crude protein apparent digestibility of groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant increased (P<0.05). 3) Compared with the control group, the duodenal pH of groups Ⅱ, Ⅲ and Ⅳ was significant decreased (P<0.05); the duodenal trypsin activity of group Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant increased (P<0.05), and group Ⅲ was significantly higher than groups Ⅳ, Ⅴ and Ⅵ (P<0.05). 4) In period Ⅰ, compared with the control group, the fecal ammonia nitrogen content of group Ⅳ was significant decreased (P<0.05). In period Ⅱ, compared with the control group, the fecal total nitrogen content of groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant decreased (P<0.05). In conclusion, the supplementation of 3 g/kg potassium diformate in diets can improve the feed efficiency and nutrient apparent digestibilities, increase the duodenal trypsin activity, reduce fecal ammonia nitrogen and total nitrogen contents of growing male minks.

Key words： minks; growth performance; nutrient apparent digestibilities; digestive enzyme activities; feces

参考文献

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