CAJ | 학술논문

本试验旨在研究饲粮锌水平对冬毛期蓝狐生长性能、营养物质消化率、氮代谢及毛皮质量的影响，以确定冬毛期蓝狐饲粮中适宜锌水平。选取16周龄左右、平均体重为（5．80±0．60） kg的健康蓝狐90只，随机分成5组，每组18只，公母各占1/2。各组蓝狐分别饲喂饲粮锌水平为41．25（Ⅰ组）、60．00（Ⅱ组）、80．00（Ⅲ组）、100．00（Ⅳ组）、120．00 mg/kg（Ⅴ组）的试验饲粮。预试期7 d，正试期60 d。结果表明：1）Ⅲ组公狐末重显著高于Ⅰ组和Ⅱ组（ P＜0．05）；公狐与母狐平均日增重各组间差异不显著（ P＞0．05）。2）公狐和母狐干物质排出量、干物质消化率和蛋白质消化率各组间差异不显著（ P＞0．05）；Ⅴ组公狐脂肪消化率显著高于Ⅰ组（ P＜0．05）。3）公狐食入氮、粪氮、尿氮、氮沉积、净蛋白质利用率和蛋白质生物学价值各组间差异不显著（ P＞0．05）；Ⅰ组母狐粪氮显著高于Ⅲ组（ P＜0．05），Ⅲ组、Ⅳ组和Ⅴ组母狐氮沉积和净蛋白质利用率极显著高于Ⅰ组（P＜0．01），Ⅳ组母狐蛋白质生物学价值显著高于Ⅰ组（P＜0．05）。4）公狐体长、针毛长、绒毛长和干皮长各组间差异不显著（ P＞0．05）；Ⅴ组母狐针毛长极显著高于其他各组（ P＜0．01），Ⅴ组母狐绒毛长显著高于Ⅰ组和Ⅲ组（ P＜0．05）。综合各项指标，建议冬毛期蓝狐饲粮适宜锌水平为80～120 mg/kg，可满足冬毛期蓝狐的锌营养需要并获得较好的生长性能及毛皮质量。
본시험지재연구사량자수평대동모기람호생장성능、영양물질소화솔、담대사급모피질량적영향，이학정동모기람호사량중괄의자수평。선취16주령좌우、평균체중위（5．80±0．60） kg적건강람호90지，수궤분성5조，매조18지，공모각점1/2。각조람호분별사위사량자수평위41．25（Ⅰ조）、60．00（Ⅱ조）、80．00（Ⅲ조）、100．00（Ⅳ조）、120．00 mg/kg（Ⅴ조）적시험사량。예시기7 d，정시기60 d。결과표명：1）Ⅲ조공호말중현저고우Ⅰ조화Ⅱ조（ P＜0．05）；공호여모호평균일증중각조간차이불현저（ P＞0．05）。2）공호화모호간물질배출량、간물질소화솔화단백질소화솔각조간차이불현저（ P＞0．05）；Ⅴ조공호지방소화솔현저고우Ⅰ조（ P＜0．05）。3）공호식입담、분담、뇨담、담침적、정단백질이용솔화단백질생물학개치각조간차이불현저（ P＞0．05）；Ⅰ조모호분담현저고우Ⅲ조（ P＜0．05），Ⅲ조、Ⅳ조화Ⅴ조모호담침적화정단백질이용솔겁현저고우Ⅰ조（P＜0．01），Ⅳ조모호단백질생물학개치현저고우Ⅰ조（P＜0．05）。4）공호체장、침모장、융모장화간피장각조간차이불현저（ P＞0．05）；Ⅴ조모호침모장겁현저고우기타각조（ P＜0．01），Ⅴ조모호융모장현저고우Ⅰ조화Ⅲ조（ P＜0．05）。종합각항지표，건의동모기람호사량괄의자수평위80～120 mg/kg，가만족동모기람호적자영양수요병획득교호적생장성능급모피질량。
This experiment was conducted to study the effects of dietary zinc level on growth performance, nu-trient digestibility, nitrogen metabolism and fur quality of blue foxes during the growing-furring period, and to find the appropriate dietary zinc level for the blue foxes.Ninety 16-week-old healthy blue foxes with the aver-age body weight of (5.80±0.60) kg were randomly divided into 5 groups with 18 foxes per group, each group had 9 male foxes and 9 female foxes.The blue foxes were fed the experimental diets with dietary zinc levels of 41.25 ( group Ⅰ) , 60.00 ( group Ⅱ) , 80.00 ( group Ⅲ) , 100.00 ( group Ⅳ) and 120.00 mg/kg ( groupⅤ) , respectively.The pretest period lasted for 7 days and the test period lasted for 60 days.The results showed as follows:1) the final weight of male foxes in group Ⅲ was significantly higher than that in groupsⅠ and Ⅱ ( P<0.05); there was no significant difference in the average daily gain of male foxes and female foxes among all groups ( P>0.05) .2) There was no significant difference in dry matter output, dry matter di-gestibility and protein digestibility of male foxes and female foxes among all groups ( P>0.05);the fat digesti-bility of male foxes in groupⅤwas significantly higher than that in groupⅠ( P<0.05) .3) There was no sig-nificant difference in nitrogen intake, fecal nitrogen, urinary nitrogen, nitrogen deposition, net protein utiliza-tion and biological value of protein of male foxes among all groups ( P>0.05) .The fecal nitrogen of female fo-xes in group Ⅰ was significantly higher than that in groupⅢ( P<0.05); the nitrogen deposition and net pro-tein utilization of female foxes in groups Ⅲ, Ⅳand Ⅴ were significantly higher than those in group Ⅰ ( P<0.01); the biological value of protein of female foxes in group Ⅳ was significantly higher than that in groupⅠ ( P<0.05) .4) There was no significant difference in body length, guard fur length, under fur length and dry fur length of male foxes among all groups (P>0.05).The guard fur length of female foxes in group Ⅴwas significantly higher than that in other groups ( P<0.01);the under fur length of female foxes in groupⅤwas significantly higher than that in groups Ⅰ and Ⅲ ( P<0.05) .In conclusion, the appropriate dietary zinc level for blue foxes during the growing-furring period is 80 to 120 mg/kg, which can be possible to meet the requirement for blue foxes and have better growth performance and fur quality.