CAJ | 학술논문

本试验旨在研究饲粮脂肪源对育成期水貂生长性能和营养物质消化代谢的影响。试验选取120只70日龄、体重[公貂（1．08±0．08） kg、母貂（0．77±0．04） kg]相近、健康的水貂随机分成4组，每组30只（公母各占1/2），分别饲喂以豆油（Ⅰ组）、鸡油（Ⅱ组）、鱼油（Ⅲ组）、猪油（Ⅳ组）为脂肪源，代谢能为15．5 MJ/kg（粗脂肪含量为22％）的试验饲粮，试验期60 d。结果表明：1）饲粮脂肪源对试验结束时水貂的体重无显著影响（ P＞0．05）。2）公貂Ⅳ组粗蛋白质消化率显著高于Ⅰ组（P＜0．05）；母貂Ⅱ组粗蛋白质消化率显著高于Ⅰ组（P＜0．05）。3）公貂Ⅰ组、Ⅲ组粗脂肪消化率显著高于Ⅳ组（ P＜0．05）；母貂Ⅳ组粗脂肪消化率显著低于其他各组（P＜0．05）。4）公貂Ⅰ组氮沉积显著低于Ⅳ组（P＜0．05）；母貂Ⅰ组氮沉积显著低于其他各组（P＜0．05）；母貂净蛋白质利用率、蛋白质生物学价值组间差异显著（P＜0．05），公貂组间没有显著差异（P＞0．05），但公貂、母貂均以Ⅳ组最高。5）公貂Ⅳ组总能、消化能、代谢能均显著高于Ⅰ组和Ⅲ组（P＜0．05）；母貂Ⅰ组总能、消化能、代谢能均显著低于其他3组（P＜0．05）。由以上可以得出，以鱼油为饲粮脂肪源，育成期公貂具有较高的脂肪消化率；以鸡油为饲粮脂肪源，母貂的营养物质消化率较高；育成期水貂鱼油脂肪消化率虽较高，但猪油可以提高净蛋白质利用率及氮沉积；综合考虑饲料成本和营养物质消化与利用，建议在实际生产中应用鱼油和猪油的混合油脂作为育成期水貂饲粮的脂肪源。
본시험지재연구사량지방원대육성기수초생장성능화영양물질소화대사적영향。시험선취120지70일령、체중[공초（1．08±0．08） kg、모초（0．77±0．04） kg]상근、건강적수초수궤분성4조，매조30지（공모각점1/2），분별사위이두유（Ⅰ조）、계유（Ⅱ조）、어유（Ⅲ조）、저유（Ⅳ조）위지방원，대사능위15．5 MJ/kg（조지방함량위22％）적시험사량，시험기60 d。결과표명：1）사량지방원대시험결속시수초적체중무현저영향（ P＞0．05）。2）공초Ⅳ조조단백질소화솔현저고우Ⅰ조（P＜0．05）；모초Ⅱ조조단백질소화솔현저고우Ⅰ조（P＜0．05）。3）공초Ⅰ조、Ⅲ조조지방소화솔현저고우Ⅳ조（ P＜0．05）；모초Ⅳ조조지방소화솔현저저우기타각조（P＜0．05）。4）공초Ⅰ조담침적현저저우Ⅳ조（P＜0．05）；모초Ⅰ조담침적현저저우기타각조（P＜0．05）；모초정단백질이용솔、단백질생물학개치조간차이현저（P＜0．05），공초조간몰유현저차이（P＞0．05），단공초、모초균이Ⅳ조최고。5）공초Ⅳ조총능、소화능、대사능균현저고우Ⅰ조화Ⅲ조（P＜0．05）；모초Ⅰ조총능、소화능、대사능균현저저우기타3조（P＜0．05）。유이상가이득출，이어유위사량지방원，육성기공초구유교고적지방소화솔；이계유위사량지방원，모초적영양물질소화솔교고；육성기수초어유지방소화솔수교고，단저유가이제고정단백질이용솔급담침적；종합고필사료성본화영양물질소화여이용，건의재실제생산중응용어유화저유적혼합유지작위육성기수초사량적지방원。
This study was conducted to study the effects of dietary fat sources on growth performance, nutrient digestion and metabolism of minks ( Mustelidae vison) in late growing period.One hundred and twenty healthy minks aged 70 days with similar body weight [ (1.08 ±0.08) kg,♀(0.77 ±0.04) kg] were selected and randomly assigned to four groups with 30 minks ( half male and half female) in each group.Minks were fed experimental diets with fat sources of soybean oil ( group Ⅰ) , chicken oil ( group Ⅱ) , fish oil ( group Ⅲ) and lard ( group Ⅳ) , respectively, and the metabolizable energy was 15 .5 MJ/kg [ the ether extract ( EE ) content was 22%] .The experiment lasted for 60 days.The results showed as follows:1 ) dietary fat sources had no significant effects on body weight of minks at the end of the experiment ( P>0 .05 ) .2 ) Crude protein (CP) digestibility of male minks in groupⅣ was significantly higher than that in group Ⅰ (P<0.05); CP digestibility of female minks in groupⅡwas significantly higher than that in groupⅠ(P<0.05).3) EE di-gestibility of male minks in groupsⅠand Ⅲ was significantly higher than that in group Ⅳ ( P<0 .05 ); EE digestibility of female minks in groupⅣwas significantly higher than that in the other groups (P<0.05).4) Retained nitrogen of male minks in group Ⅰ was significantly lower than that in group Ⅳ ( P<0 .05 ); re-tained nitrogen of female minks in group Ⅰwas significantly lower than that in the other groups ( P<0 .05 );there were significant differences in net protein utilization and biological value of protein of female minks a-mong different groups ( P<0 .05 ) , but no significant differences were observed in those of male minks ( P>0 .05 ) , and the highest values all presented in groupⅣ.5 ) Gross energy, digestible energy and metabolizable energy of male minks in groupⅣwere significantly higher than those in groupsⅠandⅢ( P<0 .05 ); gross energy, degistaile energy and metabolizable energy of female minks in group Ⅰ were significantly lower than those in the other groups (P<0.05).In conclusion, male minks in late growing period have higher fat digest-ibility when using fish oil was as their dietary fat source;female minks in late growing period have higher nutri-ent digestibility when using chicken oil was as their dietary fat source;although minks has higher fat digestibili-ty of fish oil, lard can increase net protein utilization rate and retained nitrogen;considering feed cost and nutri-ent digestion and utilization, it is suggested to use a mixture of fish oil and lard as dietary fat source in hus-bandry.