Acosta Jessica P, Espinosa Charmaine D, González-Ortiz Gemma, Stein Hans H
Division of Nutritional Sciences, University of Illinois, Urbana, IL, 61801, USA.
Department of Animal Sciences, University of Illinois, Urbana, IL, 61801, USA.
J Anim Sci Biotechnol. 2025 May 15;16(1):68. doi: 10.1186/s40104-025-01205-w.
Exogenous xylanase can increase utilization of fiber and energy when included in diets for pigs, and xylo-oligosaccharides (XOS) may improve growth performance of pigs by modulating intestinal fermentation. However, it is unclear if a stimbiotic (i.e., a combination of xylanase and XOS) has superior effects compared with a xylanase alone, and there is a lack of data demonstrating if xylanase fed to lactating sows influences growth performance of weanling pigs. Therefore, two hypotheses were tested: 1) xylanase and stimbiotic improve growth performance, apparent total tract digestibility (ATTD) of gross energy (GE) and total dietary fiber (TDF), digestible energy (DE), and intestinal health of weanling pigs and 2) offspring of sows fed xylanase in lactation have greater growth performance after weaning than offspring of sows fed no xylanase during lactation.
One hundred and twenty pigs were weaned from sows fed a diet without xylanase, and 120 pigs were weaned from sows fed a lactation diet containing 16,000 beechwood xylanase units per kg (initial weight: 5.81 ± 0.50 kg). Pigs were allotted to a 2 × 3 factorial with two sow groups (lactation diet without or with xylanase) and three dietary treatments (i.e., control, control plus xylanase, or control plus stimbiotic).
There were no interactions between sow treatment and post-weaning pig treatment, and sow treatment did not impact post-weaning growth or ATTD of GE and TDF in weaned pigs. From d 15 to 28 post-weaning, the ADG, G:F, ATTD of GE and TDF, and concentration of DE were greater (P < 0.05) for pigs fed the diet with stimbiotic than if fed the xylanase diet or the control diet, and pigs fed the xylanase diet had greater (P < 0.05) ADG, G:F, ATTD of GE and TDF, and concentration of DE than pigs fed the control diet. From d 29 to 42 post-weaning, pigs fed the diets with xylanase or stimbiotic had greater (P < 0.05) ADG, ATTD of GE and TDF, and DE than pigs fed the control diet.
Pigs fed xylanase or stimbiotic had greater ATTD of GE and TDF, greater DE, and greater overall ADG, G:F, and final body weight on d 42 post-weaning than pigs fed the control diet, but feeding sows xylanase in lactation did not influence post-weaning growth performance.
外源性木聚糖酶添加到猪日粮中时可提高纤维和能量的利用率，而低聚木糖（XOS）可能通过调节肠道发酵来改善猪的生长性能。然而，尚不清楚合生元（即木聚糖酶和XOS的组合）是否比单独使用木聚糖酶具有更好的效果，并且缺乏数据表明给哺乳母猪饲喂木聚糖酶是否会影响断奶仔猪的生长性能。因此，我们检验了两个假设：1）木聚糖酶和合生元可提高断奶仔猪的生长性能、总能（GE）和总膳食纤维（TDF）的表观全肠道消化率（ATTD）、消化能（DE）以及肠道健康；2）哺乳期间饲喂木聚糖酶的母猪所产仔猪断奶后的生长性能优于哺乳期间未饲喂木聚糖酶的母猪所产仔猪。
120头仔猪从饲喂不含木聚糖酶日粮的母猪处断奶，120头仔猪从饲喂每千克含16,000个木聚糖酶单位的哺乳日粮的母猪处断奶（初始体重：5.81±0.50千克）。仔猪按2×3析因设计进行分配，有两个母猪组（哺乳日粮不含或含有木聚糖酶）和三种日粮处理（即对照、对照加木聚糖酶或对照加合生元）。
母猪处理和断奶后仔猪处理之间没有交互作用，母猪处理对断奶仔猪断奶后的生长或GE和TDF的ATTD没有影响。在断奶后第15至28天，饲喂合生元日粮的仔猪的平均日增重（ADG）、料重比（G:F）、GE和TDF的ATTD以及DE浓度均高于饲喂木聚糖酶日粮或对照日粮的仔猪（P<0.05），并且饲喂木聚糖酶日粮的仔猪的ADG、G:F、GE和TDF的ATTD以及DE浓度高于饲喂对照日粮的仔猪（P<0.05）。在断奶后第29至42天，饲喂含木聚糖酶或合生元日粮的仔猪的ADG、GE和TDF的ATTD以及DE均高于饲喂对照日粮的仔猪（P<0.05）。
与饲喂对照日粮的仔猪相比，饲喂木聚糖酶或合生元的仔猪在断奶后第42天具有更高的GE和TDF的ATTD、更高的DE以及更高的总体ADG、G:F和最终体重，但在哺乳期间给母猪饲喂木聚糖酶不会影响断奶后的生长性能。
