作　　者： (崔家军）; (张鹤亮）; (张维金）; (张迪）; (李秀花）; (忻效福）;

机构地区： 河北北方学院动物科技学院,张家口075000

出　　处： 《中国畜牧兽医》 2017年第8期2342-2347,共6页

摘　　要： 本试验在生长育肥猪日粮中添加酶解蛋白肽T30,研究小肽对生长育肥猪的生长性能、血液生化指标及养分表观消化率的影响,并探讨其在生长育肥猪阶段的最适添加量。采用单因子随机试验设计。选取杜洛克猪×长白猪×大白猪三元商品猪300头,随机分为5组,每组4个重复,每个重复15头。Ⅰ组(对照组)饲喂基础日粮,Ⅱ~Ⅴ组在基础日粮中分别添加1%、2%、3%、4%T30。试验期30d。结果显示:(1)Ⅲ组的平均日增重显著高于Ⅰ、Ⅴ组(P<0.05);Ⅲ组平均日采食量显著高于Ⅱ组(P<0.05),与其他组间差异均不显著(P>0.05)。(2)Ⅴ组总蛋白、球蛋白水平最高,显著高于Ⅱ组(P<0.05),但与其他各组间差异均不显著(P>0.05);Ⅱ组尿素氮水平显著低于其他各组(P<0.05)。(3)Ⅴ组干物质、粗蛋白质表观消化率最高,T30添加组钙、磷表观消化率均出现不同程度的下降。综上所述,在生长育肥猪阶段酶解蛋白肽的最佳添加量为1.796%,添加酶解蛋白肽可提高生长性能、降低料重比,提高血液总蛋白水平、球蛋白水平。 This experiment was aimed to study the effects of protein hydrolysate on growth performance,blood biochemical indexes and nutrient apparent digestibility in growing-finishing pigs,and determine the optimum dosage of additions.300 Doroc pig × Landrace pig × Yorkshire pig crossbreeding commercial pigs were chosen and divided into five groups with four repeats per groups and 15 pigs per repeat.The pigs in groupⅠ（control group）were fed with basal diet,others in groupsⅡto Ⅴ were fed basal diet with 1%,2%,3% and 4% T30 small peptide,respectively.The test lasted for 30 d.The results showed that：（1）The average daily gain（ADG）of groupⅢ was significantly higher than groupsⅠandⅤ（P〈0.05）,the average daily feed intake（ADFI）of groupⅢ was significantly higher than groupⅡ,and had no significant difference with other groups（P〉0.05）.（2）The total protein and globulin levels of group Ⅴ were the highest that significantly higher than group Ⅱ（P〈0.05）,and had no significant difference with other groups（P〉0.05）.The urea nitrogen of groupⅡ was significantly lower than other groups（P〈0.05）.（3）The dry matter and crude protein apparent digestibility of group Ⅴ were the highest,and the Ca and P apparent digestibility were declined in T30 supplement groups.In conclusion,the optimum adding amount of protein hydrolysate of growing pig was 1.796%.It could improve the growth performance,decrease F/G,and increase the levels of total protein and globulin.

关 键 词： 生长育肥猪 酶解蛋白肽 生长性能 血液生化指标 养分表观消化率