Pectinase hydrolyses pectin and increases the utilization of agriculture byproducts as feeds for ruminants. A newly developed pectinase from Aspergillus terreus was compared with a commercially available pectinase at 600 IU/kg feed on feed utilization and lactational performance of Damascus goat fed orange pulp and sugar beet pulp based diet (i.e., pectin-rich diet) for 12 weeks. Thirty (one week postpartum) Damascus goats stratified by previous milk production, body weight and parity were divided into three experimental groups. Does were fed a basal diet containing concentrates, orange silage, sugar beet pulp and wheat straw at 50:20:20:10, respectively without a supplement (control treatment) or supplemented with a newly developed pectinase (New treatment) or commercial pectinase (Commercial treatment). With similar (P>0.05) feed intake, the new pectinase increased (P<0.01) nutrient digestibility and milk production efficiency more than the other treatments. Out of all the blood parameters, only serum glucose was affected by the treatments with highest (P=0.025) value noted for the new pectinase. Similarly, the new pectinase increased daily milk production (P<0.005) and the concentrations of milk components compared to the other two treatments. Additionally, pectinase (both the commercial and new) inclusion increased (P<0.05) the concentrations of total conjugated linoleic acid and unsaturated/saturated fatty acids ratio, and decreased atherogenic index (P=0.01) compared with control treatment. It is concluded that the supplementation of the diet of lactating goats with pectinase at 600 IU/kg feed will enhance feed digestion and milk production. The newly developed pectinase performed better than the commercial pectinase.

中文翻译：

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与商业果胶酶相比，由曲霉曲霉产生的一种新果胶酶可增强大马士革山羊富含果胶饮食的饲料消化，产奶量和牛奶脂肪酸谱

果胶酶水解果胶并提高农业副产品作为反刍动物饲料的利用率。一种新开发的来自土壤曲霉的果胶酶将其与市售的果胶酶以600 IU / kg的饲料相比，饲喂大马士革山羊饲喂的橙果肉和甜菜粕为基础的日粮（即富含果胶的日粮）饲料利用率和泌乳性能为12周。按产奶量，体重和胎次分层的三十只（产后一周）大马士革山羊分为三个实验组。饲喂的基础饮食分别为50：20：20：10的浓缩饲料，橙青贮饲料，甜菜粕和麦秸，不添加补充剂（对照处理）或补充新开发的果胶酶（新处理）或商业果胶酶（商业处理）。在采食量相似（P> 0.05）的情况下，新果胶酶与其他处理相比，提高了（P <0.01）的营养消化率和产奶效率。在所有血液参数中，对于新果胶酶而言，只有血清葡萄糖受到最高（P = 0.025）值的治疗的影响。同样，与其他两种处理方法相比，新的果胶酶可提高每日牛奶产量（P <0.005）和牛奶成分的浓度。此外，与对照处理相比，果胶酶（商业的和新的）包合物增加了总共轭亚油酸和不饱和/饱和脂肪酸之比的浓度（P <0.05），并降低了动脉粥样硬化指数（P = 0.01）。结论是，以600 IU / kg饲料补充果胶酶可增加泌乳山羊的日粮消化率和产奶量。新开发的果胶酶比商业果胶酶的性能更好。同样，与其他两种处理方法相比，新的果胶酶可提高每日牛奶产量（P <0.005）和牛奶成分的浓度。此外，与对照处理相比，果胶酶（商业的和新的）包合物增加了总共轭亚油酸和不饱和/饱和脂肪酸之比的浓度（P <0.05），并降低了动脉粥样硬化指数（P = 0.01）。结论是，以600 IU / kg饲料补充果胶酶可增加泌乳山羊的日粮消化率和产奶量。新开发的果胶酶比商业果胶酶的性能更好。同样，与其他两种处理方法相比，新的果胶酶可提高每日牛奶产量（P <0.005）和牛奶成分的浓度。此外，与对照处理相比，果胶酶（商业的和新的）包合物增加了总共轭亚油酸和不饱和/饱和脂肪酸之比的浓度（P <0.05），并降低了动脉粥样硬化指数（P = 0.01）。结论是，以600 IU / kg饲料补充果胶酶可增加泌乳山羊的日粮消化率和产奶量。新开发的果胶酶比商业果胶酶的性能更好。与对照处理相比，果胶酶（商业的和新的）夹杂物增加了总共轭亚油酸和不饱和/饱和脂肪酸之比的浓度（P <0.05），并降低了动脉粥样硬化指数（P = 0.01）。结论是，以600 IU / kg饲料补充果胶酶可增加泌乳山羊的日粮消化率和产奶量。新开发的果胶酶比商业果胶酶的性能更好。与对照处理相比，果胶酶（商业的和新的）夹杂物增加了总共轭亚油酸和不饱和/饱和脂肪酸之比的浓度（P <0.05），并降低了动脉粥样硬化指数（P = 0.01）。结论是，以600 IU / kg饲料补充果胶酶可增加泌乳山羊的日粮消化率和产奶量。新开发的果胶酶比商业果胶酶的性能更好。