复合酶制剂对哺乳期驴驹生长发育及营养物质消化代谢的影响  

Effects of complex enzyme preparations on the growth and development of donkey foals and the digestion and metabolism of nutrients during lactation

作　　者：李超 陈晖 李钰琪 马晨[1] 王彩蝶 肖海霞[3] 孟军[1] LI Chao;CHEN Hui;LI Yuqi;MA Chen;WANG Caidie;XIAO Haixia;MENG Jun(Xinjiang Key Laboratory of Horse Breeding and Exercise Physiology,Xinjiang Agricultural University,Key Laboratory of Herbivores for Meat and Milk,Urumqi,Xinjiang 830052,China;Xinjiang Uygur Autonomous Region Animal Husbandry Station,Urumqi,Xinjiang 830001,China;Institute of Animal Science,Xinjiang Academy of Animal Sciences,Urumqi,Xinjiang 830011,China)

机构地区：[1]新疆农业大学动物科学学院,新疆马繁育与运动生理重点实验室,肉乳用草食动物重点实验室,新疆乌鲁木齐830052 [2]新疆维吾尔自治区畜牧总站,新疆乌鲁木齐830001 [3]新疆畜牧科学院畜牧研究所,新疆乌鲁木齐830011

出　　处：《中国饲料》2024年第3期69-75,共7页China Feed

基　　金：新疆维吾尔自治区重点研发计划项目子任务(2020B01002-2-2-2)。

摘　　要：试验旨在探究复合酶制剂对驴驹生长发育、营养物质消化代谢的影响,为哺乳驴驹早期胃肠道机能、肠道健康及营养需要量的研究提供参考依据。选择出生日期与体重[(45.22±7.32)kg]相近,健康的2月龄哺乳母驴驹10头。随机分为对照组与试验组,每组各5头。在相同的饲养管理条件下,驴驹自由哺乳,自由采食玉米秸秆和苜蓿,补喂精料补充料。试验组驴驹在对照组驴驹饲喂的基础上补喂复合酶制剂(木聚糖酶15000 U/g,β-甘露聚糖酶400 U/g,β-葡聚糖酶10000 U/g,纤维素酶2000 U/g,蛋白酶1000 U/g,淀粉酶300000 U/g),补喂量为6.5 mg/(kg BW·d),进行为期60 d的补饲及营养物质消化代谢试验。结果显示:驴驹的体重、体尺无显著性变化,试验组驴驹体斜长和管围总增长较对照组分别提高了26.02%和2.17%(P>0.05);试验组驴驹干物质、有机物、酸性洗涤纤维、钙、磷和能量的采食量分别比对照组提高了2.99%、3.14%、6.67%、2.07%、1.11%和2.81%(P>0.05);试验组驴驹摄入能、粪能、沉积能、摄入氮、粪氮、沉积氮、氮代谢率、摄入钙、粪钙、沉积钙、钙代谢率、摄入磷、沉积磷和磷代谢率分别比对照组提高了2.81%、13.03%、4.46%、1.65%、10.09%、21.49%、19.54%、2.07%、3.47%、4.59%、2.32%、1.11%、39.06%和40.77%,尿能、尿氮、尿钙、粪磷和尿磷分别比对照组降低了78.10%、20.19%、33.33%、4.35%和9.81%,无显著性差异(P>0.05)。综上所述,在本研究条件下,给驴驹补喂酶制剂促进了驴驹体斜长和管围的增长,营养物质的采食量和代谢率有升高的趋势,但均未达到显著的效果。The purpose of this experiment was to explore the effects of complex enzyme preparations on the growth and development of donkey foals,digestion and metabolism of nutrients,and to provide a reference for the study of early gastrointestinal function,intestinal health and nutritional requirements of nursing donkeys.Ten healthy 2-month-old lactating female donkey foals with similar birth date and weight[(45.22±7.32)kg]were selected.The foals were randomly divided into a control group and a test group of 5 foals each.Under the same feeding and management conditions,the foals were free to nurse,free to feed on corn straw and alfalfa,and supplemented with concentrate.The foals in the experimental group were supplemented with enzyme complexes(xylanase 15000 U/g,β-mannanase 400 U/g,β-glucanase 10000 U/g,cellulase 2000 U/g,protease 1000 U/g,amylase 300000 U/g)on top of those in the control group at a supplemental rate of 6.5 mg/(kgBW·d).The supplemental feeding and nutrient digestion and metabolism tests were carried out for 60 days.The results showed that there was no significant change in body weight and body size of donkey foals,and the total growth of body slope length and tube circumference of donkey foals in the test group increased by 26.02%and 2.17%,respectively,compared with the control group(P>0.05);the intake of dry matter,organic matter,acidic detergent fiber,calcium,phosphorus and energy of donkey foals in the test group increased by 2.99%,3.14%,6.67%,2.07%,1.11%and 2.81%(P>0.05);energy intake,fecal energy,deposited energy,nitrogen intake,fecal nitrogen,deposited nitrogen,nitrogen metabolic rate,calcium intake,fecal calcium,deposited calcium,calcium metabolic rate,phosphorus intake,deposited phosphorus and phosphorus metabolic rate of donkey foals in the test group were increased by 2.81%,13.03%,4.46%,1.65%,10.09%,21.49%,19.54%,2.07%,3.47%,4.59%,2.32%,1.11%,39.06%and 40.77%,and urinary energy,urinary nitrogen,urinary calcium,fecal phosphorus and urinary phosphorus were reduced by 78.10%,20.19%,33.33%,4.35

关 键 词：复合酶制剂 哺乳驴驹 体重 体尺 养分利用 

分 类 号：S816.7[农业科学—饲料科学]