CAJ | 학술논문

试验旨在研究饲料中添加不同锌源对鲫鱼生长性能、骨锌含量和5'-核苷酸酶和碱性磷酸酶活性的影响，为在水产饲料中合理选择锌源提供科学的参考。试验选用初均重为（3.33±0.22）g/尾的芙蓉鲫180尾，随机分为3个处理，每处理3个重复，每重复20尾。以常规蛋白源设计基础饲料，对照组饲喂基础饲料（93.03 mg/kg Zn），试验组在基础饲料中分别添加50 mg/kg Zn水平的不同锌源，即分别为一水硫酸锌(硫酸锌组)、碱式氯化锌(碱式氯化锌组)。以天然水库水为水源，在室内桶中饲喂72 d。结果显示：①不同处理组鲫鱼增重率、平均日增重及特定生长率以碱式氯化锌组最高，显著或极显著高于对照组（P<0.05，P<0.01）。而硫酸锌组增重率、特定生长率和铒料系数与对照组相比无显著差异。与硫酸锌组对比，碱式氯化锌组鲫鱼增重率、平均日增重及特定生长率有升高趋势，分别高于硫酸锌组5.38%、3.19%和4.2%（P>0.05）。②碱式氯化锌组鲫鱼血清碱性磷酸酶活力高于硫酸锌组173.02%(P<0.05)，5'-核苷酸酶活力高于硫酸锌组59.41%（P<0.05）。③碱式氯化锌组鲫鱼脊椎骨微量元素锌的含量比硫酸锌组高8.64%，比对照组提高了15.66%。以上结果说明，碱式氯化锌是一种比硫酸锌生物效价更高的营养性锌源，更有利于提高鲫鱼的生产性能。
시험지재연구사료중첨가불동자원대즉어생장성능、골자함량화5'-핵감산매화감성린산매활성적영향，위재수산사료중합리선택자원제공과학적삼고。시험선용초균중위（3.33±0.22）g/미적부용즉180미，수궤분위3개처리，매처리3개중복，매중복20미。이상규단백원설계기출사료，대조조사위기출사료（93.03 mg/kg Zn），시험조재기출사료중분별첨가50 mg/kg Zn수평적불동자원，즉분별위일수류산자(류산자조)、감식록화자(감식록화자조)。이천연수고수위수원，재실내통중사위72 d。결과현시：①불동처리조즉어증중솔、평균일증중급특정생장솔이감식록화자조최고，현저혹겁현저고우대조조（P<0.05，P<0.01）。이류산자조증중솔、특정생장솔화이료계수여대조조상비무현저차이。여류산자조대비，감식록화자조즉어증중솔、평균일증중급특정생장솔유승고추세，분별고우류산자조5.38%、3.19%화4.2%（P>0.05）。②감식록화자조즉어혈청감성린산매활력고우류산자조173.02%(P<0.05)，5'-핵감산매활력고우류산자조59.41%（P<0.05）。③감식록화자조즉어척추골미량원소자적함량비류산자조고8.64%，비대조조제고료15.66%。이상결과설명，감식록화자시일충비류산자생물효개경고적영양성자원，경유리우제고즉어적생산성능。
A 72 day growth trial was conducted to study the effect of dietary zinc source on growth performance, 5'-nucleotidase and alkaline phosphatase activity of blood and vertebrae zinc accumulation of crucian carp. Fish with initial body weight of (3.33±0.22) g were randomly assigned into 3 treatments with 3 replicates in each treatment and 20 fish per replicate. A basal diet was formulated with conventional protein source. Fish in the control group were fed the bas-al diet (93.03 mg/kg Zn). The experimental groups were supplemented with 50 mg/kg Zn levels of zinc sulfate monohydrate(zinc sulfate group)and tetrabasic zinc chloride(tetrabasic zinc chlo-ride group) in basal diet. The results showed as follows: ①The rate of weight gain, daily gain and specific growth rate of Crucian carp in tetrabasic zinc chloride group was highest, and was significantly higher than those of the control group (P<0.05, P<0.01). And contrasted with zinc sulfate group, the rate of weight gain, daily gain and specific growth rate in tetrabasic zinc chlo-ride group increased by 5.38%, 3.19% and 4.2%(P>0.05). No significant differences were ob-served in the rate of weight gain and specific growth rate among zinc sulfate group and tetraba-sic zinc chloride group(P>0.05). Compared with the control group, all the experimental groups showed higher feed conversion rate(P>0.05). ②Contrasted with zinc sulfate group, the 5 ' nucle-otidase and alkaline phosphatase activity of blood in tetrabasic zinc chloride group in-creased by 173.02%(P<0.05) and 59.41%(P<0.05). ③The vertebrae zinc content in Tetra- basic zinc chloride group was 8.64% higher than that of zinc sulfate group, 15.66% higher than that of control group. These results showed that, the maximum production performance of Cru-cian carp can be improved by zinc supplementation in the basal diet at proper level. But the ef-fect of supplementation of different zinc sources was inconsistent. The biological potency of tet-rabasic zinc chloride was higher than zinc sulfate, and tetrabasic zinc chloride was more con-ductive to improving the prodution performance of Crucian carp.