饮用磁化水对饲喂颗粒日粮绵羊消化代谢的影响

doi:10.16431/j.cnki.1671-7236.2019.01.012

摘要/Abstract

摘要：

为研究饮用磁化水对饲喂颗粒日粮绵羊消化代谢的影响，本研究设计了2个试验：试验1：选取4只约1.5岁、体重（44.7±1.8） kg的小尾寒羊公羊，采用4×4拉丁方设计，每期每只羊分别饲喂粉碎日粮（处理1）、粉碎日粮+磁化水（处理2）、颗粒日粮（处理3）及颗粒日粮+磁化水（处理4），研究饲喂粉碎、颗粒两种日粮条件下饮用磁化水对绵羊自由采食和消化代谢的影响；试验2：选取6只约1.5岁、体重（46.3±2.1） kg的小尾寒羊空怀母羊，采用3×3拉丁方设计，每期每组饲喂相同的颗粒日粮，处理1：自由采食；处理2：在自由采食条件下饮用磁化水；处理3：在限饲（相当于处理1的喂量）条件下饮用磁化水，研究饮用磁化水时限饲对绵羊消化代谢的影响。结果显示：①在试验1中，饮用磁化水组绵羊的干物质自由采食量，干物质、粗蛋白质和总能表观消化率及氮保留量较饲喂粉碎日粮时分别提高14.7%（P < 0.05）、2.6%（P > 0.05）、2.2%（P > 0.05）、2.2%（P > 0.05）和22.7%（P < 0.01）；在饲喂颗粒日粮时分别提高14.3%（P < 0.05）、4.2%（P < 0.05）、4.8%（P < 0.05）、6.0%（P < 0.01）和14.2%（P < 0.05）。②在试验2中，饮用磁化水时限饲母羊的干物质、有机物、粗蛋白质、纤维素、半纤维素、不可酶解纤维素和半纤维素、总能表观消化率及氮保留量较自由采食时分别提高19.1%、19.0%、9.7%、18.4%、16.2%、341.5%、226.7%、17.4%和14.8%，均差异极显著（P < 0.01）。综上所述，在饲喂颗粒日粮的基础上饮用磁化水时，绵羊干物质自由采食量可进一步提高；自由采食条件下饮用磁化水不影响饲喂粉碎日粮绵羊日粮消化率，但可提高饲喂颗粒日粮绵羊干物质、粗蛋白质和能量的表观消化率，且氮保留量显著增加；限饲条件下饮用磁化水可显著提高饲喂颗粒日粮绵羊日粮营养物质消化率。

关键词: 磁化水; 绵羊; 颗粒日粮; 消化代谢

Abstract:

In order to explore the effects of drinking magnetized water (DMW) on the digestion and metabolism of sheep fed with pellet diet,two experiments were designed in this study.In experiment 1:Four 1.5-year-old Small-tail Han ram with (44.7±1.8) kg body weight were selected and assigned to 4 groups by 4×4 Latin square design,in which they were fed with ground diet (treatment 1),ground diet+DWM (treatment 2),pellet diet (treatment 3) and pellet diet+DMW(treatment 4),respectively,to study the effect of DMW on the voluntary intake,digestion and metabolism of sheep fed with the ground and pellet diets.In experiment 2:Six 1.5-year-old non-pregnant Small-tail Han ewe with (46.3±2.1) kg body weight were selected and divided into 3 groups by 3×3 Latin square design,in which all of sheep were fed with pellet diet with voluntary intake (treatment 1),voluntary intake+DMW(treatment 2) and restricted feeding+DMW (treatment 3),respectively,to study on the effects of DMW on the digestion and metabolism of sheep with restricted feeding.The results showed that:①In experiment 1,the dry matter voluntary intake,apparent digestibility of the dry matter,crude protein and energy,and nitrogen retention of ram with DMW were increased by 14.7%(P < 0.05),2.6%(P > 0.05),2.2%(P > 0.05),2.2%(P > 0.05) and 22.7%(P < 0.01),respectively,when fed with ground diet;And that were increased by 14.3%(P < 0.05),4.2%(P < 0.05),4.8%(P < 0.05),6.0%(P < 0.01) and 14.2%(P < 0.05),respectively,when fed with pellet diet.② In experiment 2,the apparent digestibility of the dry matter,organic matter,crude protein,cellulose,hemicellulose,non-enzyme-hydrolyzable cellulose and hemicellulose,energy and nitrogen retention of feeding-restricted ewe with DMW were increased by 19.1%,19.0%,9.7%,18.4%,16.2%,341.5%,226.7%,17.4% and 14.8%(P < 0.01),respectively,compared with the ewe that had voluntary intake.It was concluded that under the circumstance of voluntary intake of sheep increased by feeding pellet diet,it would be increased further by DMW;Under the circumstance of voluntary intake,DMW did not affect the digestibility of sheep fed with ground diet but increased the digestibility of dry matter,crude protein and energy and nitrogen retention of sheep fed with pellet diet;In restricted feeding,the nutrients digestibility of sheep was significantly increased by DMW.

Key words: magnetized water; sheep; pellet diet; digestion and metabolism

中图分类号:

S826

张丽平, 雒秋江, 臧长江, 谢家迅, 潘榕. 饮用磁化水对饲喂颗粒日粮绵羊消化代谢的影响[J]. 《中国畜牧兽医》, 2019, 46(1): 101-111.

ZHANG Liping, LUO Qiujiang, ZANG Changjiang, XIE Jiaxun, PAN Rong. Effects of Drinking Magnetized Water on the Digestion and Metabolism of Sheep Fed with Pellet Diet[J]. , 2019, 46(1): 101-111.

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