本试验旨在研究饲粮蛋白质水平对哺乳期母狐哺乳性能的影响。选择健康产仔蓝狐60窝，随机分为4组，每组15个重复，每个重复1窝。各组哺乳母狐分别饲喂蛋白质水平为39.84%（Ⅰ组）、35.69%（Ⅱ组）、32.49%（Ⅲ组）和28.19%（Ⅳ组）的试验饲粮。结果表明：1）10日龄和20日龄仔狐窝重差异不显著（P>0.05），30日龄时Ⅰ组仔狐窝重显著高于Ⅲ组和Ⅳ组（P<0.05），40日龄时Ⅰ组仔狐窝重显著高于Ⅳ组（P<0.05）。2）在仔狐20日龄内，各组仔狐窝平均日增重差异不显著（P>0.05），Ⅰ组仔狐30日龄的窝平均日增重极显著高于Ⅲ组(P<0.01)，显著高于Ⅳ组（P<0.05），Ⅰ组仔狐40日龄的窝平均日增重显著高于Ⅳ组（P<0.05）。3）仔狐成活率各个时期Ⅰ组均高于其他各组，并且随着饲粮中蛋白质水平的降低，仔狐的成活率也逐渐下降（P>0.05）。由此可见，在本试验条件下，母狐哺乳期适宜蛋白质水平为39.84%。
This experiment was conducted to study the effect of dietary protein levels on suckling performance of female blue foxes (Alopex lagopus) during lactation. A total of 60 larva healthy blue foxes were randomly allocated to 4 groups with 15 replicates per group and 1 larva fox per replicate. Foxes were fed with 4 experimental diets which contained 39.84% (group Ⅰ), 35.69% (group Ⅱ), 32.49% (group Ⅲ) and 28.19% (group Ⅳ) protein, respectively. The results showed as follows: 1) foxes in different groups had no significant difference in litter weight of larva foxes at 10 and 20 days of age (P>0.05); the litter weight of larva foxes in group Ⅰ at 30 days of age was significantly higher than that in groups Ⅲ and Ⅳ (P<0.05); the litter weight of larva foxes in group Ⅰ at 40 days of age was significantly higher than that in group Ⅳ (P<0.05). 2) The litter average weight gain of larva foxes within 20 days of age showed no significant difference in the four groups (P>0.05); the litter average weight gain of larva foxes in group Ⅰ at 30 days of age was significantly higher than that in groups Ⅲ (P<0.01) and Ⅳ (P<0.05); the litter average weight gain of larva foxes in group Ⅰ at 40 days of age was significantly higher than that in group Ⅳ (P<0.05). 3) The survival rate in different periods in group Ⅰ was higher than that in other groups (P>0.05), and the survival rate in different periods were decreased with the decrease of dietary protein levels (P>0.05). In conclusion, the optimal protein level of female blue foxes during lactation is 39.84% under the conditions of this experiment.［Chinese Journal of Animal Nutrition, 2011, 23（9）：1631 -1636］
［1］杨福合．狐产仔哺乳期的饲养管理[J]．特种经济动植物，2002(5)：2-3.
[2]冯定远，王征.母猪的营养研究进展[J].国外畜牧学：猪与禽，1998(4)：14-16．
[3]华树芳，李万庆.北极狐产仔泌乳期的饲养管理[J].特种经济动植物，2001(5)：4-5.
[4]张冬青，张冠相，苗兴元，等.蓝狐繁殖期干饲料配合的研究[J].中国林副特产，1994，28（1）：16-18.
[5]杨嘉实.特产经济动物饲料配方[M].北京：中国农业出版社，1999:116.
[6]DAHLMAN T, VALAJA J, NIEMELA P, et al. Influence of protein level and supplementary L-lethionine and lysine on growth performance and fur quality of blue fox (Alopex lagopus)[J]. Acta Agriculturae Scandinavica Section A: Animal Sciences, 2002, 52(4):174-182.
[7]肖寿明，丁庆东，李元刚，等.降低仔狐早期死亡率的研究[J].经济动物学报，1998，2(3)：13-15.
[8]刘月琴，张英杰.营养对母羊繁殖性能的调控[J].中国草食动物，2007(Suppl.1)：89-90.
[9]章红兵，陈大水.提高饲粮蛋白质和能量水平对哺乳母猪和仔猪生产性能的影响[J].浙江畜牧兽医，2001(1)：3-4.
[10]JOHNSTON L J, PETTIGREW J E, RUST J W. Responses of maternal-line sows to dietary protein concentration during lactation[J]. Journal of Animal Science, 1993, 71:2151-2156.
[11]KING R H, TONER M S, DOVE H, et al. The response of first-litter sows to dietary protein level during lactation[J]. Journal of Animal Science, 1993, 71:2450-2456.
[12]赵世明，高振川，姜云侠,等.泌乳母猪饲粮适宜赖氨酸水平的初步研究[J].畜牧兽医学报，2001，32(3)：206-212.
[13]YANG H, PETTIGREW J E, JOHNSTON L J, et al. Lactational and subsequent reproductive responses of lactating sows to dietary lysine (protein) concentration[J]. Journal of Animal Science, 2000, 78:348-357.
[14]CLOWES E J, AHERNE F X, SCHAEFERET A L, et al. Parturition body size and body protein loss during lactation influence performance during lactation and ovarian function at weaning in first-parity sows[J]. Journal of Animal Science, 2003, 81:1517-1528.
[15]TOKACH M D, PETTIGREW J E, CROOKER B A, et al. Sower quantitative influence of lysine and energy intake on yield of milk components in the primiprous sow[J]. Journal of Animal Science, 1992, 70:1864-1872.
[16]KOTETSU Y, DIAL G D, PETTIGREW J E, et al. Feed intake pattern during lactation and subsequent reproductive performance of sows[J]. Journal of Animal Science, 1996, 74:2875-2884.
[17]MULLAN B P, WILLIAMS I H. The effect of body reserves at farrowing on reproductive performance of first-litter sows[J]. Animal Production Science, 1989, 48:449-457.
[18]刘钢，董国忠，郝静，等.低蛋白质氨基酸平衡饲粮对哺乳母猪生产性能及氮利用的影响[J].中国畜牧杂志，2010，46（11）：31-35.
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