CAJ | 학술논문

为了研究0～6周龄蛋雏鸡适宜钙需要量，试验设计了不同日粮钙水平（0.7，0.8，0.9，1.0，1.1，1.2%）对该阶段蛋雏鸡的生长性能、骨骼质量和血清有关指标的影响。结果表明，在0～6周龄期间，钙水平为0.9%和1.0%的处理组全程增重最大，分别为446.44±39.22g和455.96±39.49g，两者间差异不显著。1.0%处理组增重显著高于其它4组（P<0.05）；0.9%的处理组增重显著高于1.1%和1.2%处理组（P<0.05），和0.7%和0.8%处理组相比尽管差异不明显，但也表现出较优的增重性能。0.7%和0.8%的处理组增重明显优于1.1%和1.2%处理组（P<0.05）。料重比也表现出类似的规律，即0.9%～1.0%处理组最低，0.7%～0.8%其次，1.1%～1.2%最高。从统计学角度考察，骨钙、骨磷和血清钙、磷在各处理组并无明显差异，粪钙检测结果表明排出体外的粪钙量随钙水平的升高而增加。上述结果说明0～6周龄蛋雏鸡日粮中钙的适宜水平应为0.9%～1.0%。
위료연구0～6주령단추계괄의개수요량，시험설계료불동일량개수평（0.7，0.8，0.9，1.0，1.1，1.2%）대해계단단추계적생장성능、골격질량화혈청유관지표적영향。결과표명，재0～6주령기간，개수평위0.9%화1.0%적처리조전정증중최대，분별위446.44±39.22g화455.96±39.49g，량자간차이불현저。1.0%처리조증중현저고우기타4조（P<0.05）；0.9%적처리조증중현저고우1.1%화1.2%처리조（P<0.05），화0.7%화0.8%처리조상비진관차이불명현，단야표현출교우적증중성능。0.7%화0.8%적처리조증중명현우우1.1%화1.2%처리조（P<0.05）。료중비야표현출유사적규률，즉0.9%～1.0%처리조최저，0.7%～0.8%기차，1.1%～1.2%최고。종통계학각도고찰，골개、골린화혈청개、린재각처리조병무명현차이，분개검측결과표명배출체외적분개량수개수평적승고이증가。상술결과설명0～6주령단추계일량중개적괄의수평응위0.9%～1.0%。
The effects of different dietary Ca levels (0.7, 0.8, 0.9,1.0, 1.1 and 1.2%) on performance, tibia quality and serum characteristics of 0～6-week-old pullets were studied to determine the optimum calcium requirement. The results showed that among six groups tested, the groups of pullets fed at dietary calcium level of 0.9% and 1.0% reached the highest body weight gains (BWGs) of 446.44±39.22g and 455.96±39.49g, respectively, which were not significantly different. The BWG of 1.0% dietary Ca level group was significantly higher as compared with the groups of 0.7%, 0.8%, 1.1% and 1.2%dietary Ca levels (P< 0.05). The BWG of 0.9% level group was significantly higher as compared with the groups of 1.1% and 1.2% dietary Ca levels (P< 0.05), and not significantly higher as compared with the groups of 0.7% and 0.8% dietary Ca levels (P> 0.05). The BWGs of the groups of 0.7% and 0.8% dietary Ca level were higher than those of the groups of 1.1% and 1.2% dietary Ca levels. The feed/gain ratios varied in a similar way to BWG, those of the groups 0.9% and 1.0% dietary Ca levels were lowest, those of the groups of 0.7% and 0.8%dietary Ca levels were medium and those of the groups of 1.1% and 1.2% dietary Ca levels were highest. There were no obvious differences in calcium and phosphorus concentrations in bone and serum among the six groups. The fecal calcium excreted rose with the increase of dietary calcium level. It is clear based on these experiment results that 0.9% and 1.0% dietary Ca levels are optimum for 0～6-week-old pullets .