不同日粮能量和蛋白水平对特种野猪的表观消化率和生长性能的影响

选择54头健康断奶的50日龄50%野猪血缘的特种野猪为试验用猪(平均体重为7.92±0.61 kg),日粮消化能分为12.76,13.17和13.6M J/kg 3个水平;蛋白含量分为14%,16%和18%3个水平,采用3×3完全随机试验设计。研究了9种不同能量和蛋白质水平的日粮在舍饲条件下,特种野猪生长期的能量和蛋白质营养需要量。结果表明:在日粮表观消化率方面,不同能量水平对于总能、粗蛋白、干物质,高能组和中能组比低能组分别提高3.66%和2.55%(P<0.05),3.26%和1.29%(P<0.05);3.01%和1.74%。不同蛋白水平对于总能、粗蛋白、干物质,高蛋白组和中蛋白组比低蛋白组分别提高1.95%和1.36%(P<0.05);2.01%(P<0.05)和0.7%;1.55%(P<0.05)和0.92%。生长性能方面,不同能量水平中,中能组的日增重显著高于高能组与低能组(P<0.05),高能组平均日采食量,显著低于中能、低能组(P<0.05),对于料肉比,高能、中能组显著低于低能组(P<0.05)。不同粗蛋白水平中,对于平均日采食量,低蛋白水平显著高于高蛋、中蛋白水平(P<0.05),对于料重比,低蛋白水平显著高于高蛋白、中蛋白水平(P<0.05)。总之,日粮消化能在13.17 M J/kg和粗蛋白在16%水平有一个较好的生产性能,更能适应广西特种野猪的营养需要。

Effect of different levels of dietary energy and protein on digestibility and growth performance in the wild boar

Fifty-four growing boars of wild strain weaned at 50 days with the body weight of(8.924±0.609) kg were used in the present Study.Three feed energy(12.76,13.17 and 13.6 MJ /kg) and protein(14,16 and 18%) levels and 3×3 cross classification design were used to study the energy and protein requirements of stall-feeding Strain wild boars.The results showed that the diet digestibility of the total energy,crude protein and dry matter in the high and middle energy groups increased by 3.66% and 2.55%(P<0.05),3.26% and 1.29%(P<0.05),and 3.01% and 1.74%,respectively compared with those in the low energy group;dietary protein digestibility of the total energy,crude protein,dry matter in the high and middle protein groups increased by 1.95% and 1.36%(P<0.05),2.01%(P<0.05) and 0.7%,and 1.55%(P<0.05) and 0.92%,respectively compared with those in the low-protein group.In addition,the average daily weight gain in the middle energy level group was significantly increased compared with the high and low energy level groups(P<0.05),and the daily feed intake in high energy level groups was significantly lower than that in other two groups(P<0.05),and mean Feed/Gain in the high and middle energy level groups were significantly lower than that in the low energy level group(P<0.05).Furthermore,the average feed intake and Feed/Gain in low-protein level group were significantly higher than those in high and middle protein level groups(P<0.05).Together,the results of our current experiment suggested that 13.17 MJ·DE/kg DE and 16% CP were good to meet the nutrition needs of wild boars of Guangxi strain.