Prandini A, Sigolo S, Morlacchini M, Giuberti G, Moschini M, Rzepus M, Della Casa G
Feed and Food Science and Nutrition Institute, Agricultural Faculty, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy.
J Anim Sci. 2014 May;92(5):2080-6. doi: 10.2527/jas.2012-6199. Epub 2014 Mar 26.
A study was conducted to evaluate the effect of 2 hulless barley varieties, with or without the addition of a nonstarch polysaccharide (NSP) enzyme complex (β-glucanase and xylanase), on growth performance of weaned piglets in a 42-d feeding study. The study was conducted with 140 piglets (PIC × Duroc). Pigs were allocated to pens (4 castrated males or 4 females per pen) based on BW and sex, and pens were assigned to 5 experimental diets with 4 pens of castrated males and 3 pens of females per treatment. Five isonitrogenous and isoenergetic diets were compared: 1) control corn-based diet (CTR), 2) diet with corn and wheat bran replaced by the Astartis hulless barley variety (AS), 3) diet with corn and wheat bran replaced by the AS supplemented with the NSP enzyme complex (ASE), 4) diet with corn and wheat bran replaced by the Alamo hulless barley variety (AL), and 5) diet with corn and wheat bran replaced by the AL supplemented with the NSP enzyme complex (ALE). The diets were formulated to meet or exceed nutrient requirements and offered in 2 phases: d 0 to 14 and d 14 to 42. At the end of the study, pigs fed AS and AL had equal weights as pigs fed CTR. Pigs fed the hulless barley diets had greater (P < 0.05) ADG during the second phase (P2) and overall phase, BW at d 42, and G:F during the P2 than those fed the CTR. Pigs fed the ASE and ALE had greater (P < 0.05) ADFI during the P2 and overall ADG than those fed the AS and AL. The increases in ADG during the P2 and final BW obtained with NSP enzyme supplementation were greater in pigs fed the AS than those fed the AL (barley × enzyme, P < 0.05). On the other hand, the NSP enzyme complex increased G:F in pigs fed the AS during the P2 and overall phase, but it had no effect on those fed the AL (barley × enzyme, P < 0.05). In conclusion, hulless barley with or without the NSP enzyme complex can be a replacement ingredient for corn and wheat bran in weaned pig diets. Addition of the NSP enzyme complex to AS variety, but not AL variety, improved growth performance of weanling pigs.
进行了一项研究，以评估2种裸大麦品种（添加或不添加非淀粉多糖（NSP）酶复合物（β-葡聚糖酶和木聚糖酶））在为期42天的饲养研究中对断奶仔猪生长性能的影响。该研究使用了140头仔猪（PIC×杜洛克）。根据体重和性别将猪分配到栏中（每栏4头去势公猪或4头母猪），并将栏分配到5种实验日粮，每种处理有4栏去势公猪和3栏母猪。比较了五种等氮和等能量的日粮：1）对照玉米日粮（CTR），2）用Astartis裸大麦品种（AS）替代玉米和麦麸的日粮，3）用添加NSP酶复合物（ASE）的AS替代玉米和麦麸的日粮，4）用Alamo裸大麦品种（AL）替代玉米和麦麸的日粮，5）用添加NSP酶复合物（ALE）的AL替代玉米和麦麸的日粮。日粮配方旨在满足或超过营养需求，并分两个阶段提供：第0至14天和第14至42天。在研究结束时，饲喂AS和AL的猪体重与饲喂CTR的猪相同。饲喂裸大麦日粮的猪在第二阶段（P2）和整个阶段的平均日增重（ADG）、第42天的体重以及P2期间的料重比（G:F）均高于饲喂CTR的猪（P<0.05）。饲喂ASE和ALE的猪在P2期间的平均日采食量（ADFI）和整个阶段的ADG均高于饲喂AS和AL的猪（P<0.05）。添加NSP酶复合物后，饲喂AS的猪在P2期间的ADG增加量和最终体重增加量均高于饲喂AL的猪（大麦×酶，P<0.05）。另一方面，NSP酶复合物在P2期间和整个阶段提高了饲喂AS的猪的G:F，但对饲喂AL的猪没有影响（大麦×酶，P<0.05）。总之，添加或不添加NSP酶复合物的裸大麦都可以作为断奶仔猪日粮中玉米和麦麸的替代成分。在AS品种中添加NSP酶复合物可提高断奶仔猪的生长性能，但在AL品种中添加则没有效果。
