德国大白兔与新西兰兔早期生长规律及饲料转化效率的比较

The Comparison of SAB Rabbit and New Zealand Rabbit in Early Growth Rate and Feed Conversion Efficiency

对德国大白兔、新西兰兔两个品种的早期生长规律及对不同饲料的转化效率进行研究比较。结果表明 :无论是德国大白兔 ,还是新西兰兔 ,都表现出早期生长快的特点 ,而且以 30～ 75日龄生长最快 ,在此期间 ,新西兰兔日增重平均为 32 .1 g,德国大白兔为 43.6g;与新西兰兔相比 ,德国大白兔生长更快 ,整个试验期的日增重始终高于新西兰兔 ;从饲料报酬看 ,对同一饲料 ,虽然德国大白兔的饲料报酬高于新西兰兔 ,但差异不显著 ( P>0 .0 5) ,而同一品种内 ,不同饲料的转化效率差异极显著 ,均为常规饲料 ( CP为 1 7.8%)的饲料报酬显著高于试验饲料 ( CP为 1 6.0 6%) ( P<0 .0 1 )

The present study consists of two experiments.In experiment Ⅰ, a total of 90 SAB rabbits and 60 New Zealand rabbits were fed the same diet and weighted every 15 days after their birth, aimed to compare the growth rate in early stage (0-90 days). The results showed: both SAB and New Zealand rabbits show rapid growth during this period, but SAB grow more faster than New Zealand, especially among 30-75 days, the average daily body gain of SAB is 43.6g/d, and 32.1g/d for New Zealand. The body weight difference of two breeds is 64.3g, 194.6g, 373.7g, 495.0g, 648.4g, 732.2g at 15, 30, 45, 60, 75, 90 days after their birth. In experiment Ⅱ, SAB and New Zealand rabbits were fed two kinds of diets, their main difference is CP content (16.06% vs 17.80%), the results showed:there is no different feed conversion efficiency of the same diet between two breeds , but there will be significant difference between two kinds of diets. It is 1.93 (CP 17.80%) vs 2.35 (CP 16.06%) for SAB(P<0.01), and 2.97 (CP 17.80%) vs 3.54( CP 16.06% ) for New Zealand (P<0.01).