本研究旨在评估碎米不同加工技术对颗粒饲料加工品质的影响。增长业绩,营养素消化率,断奶仔猪血液生化指标和粪便菌群。在28天的实验中,总共使用了400只杂交仔猪(Duroc×Landrace×Yorkshire),平均初始体重(BW)为7.24±0.52kg。将仔猪随机分配到4个处理和每个处理10个重复围栏中的一个,每笔10只小猪。饮食处理如下:CON,玉米是膳食中的主要谷物类型;BR,70%的玉米被碎米替代;ETBR,70%的玉米被挤压碎米替代;EPBR,70%的玉米被膨化碎米替代。膨化碎米和膨化碎米补料显著提高硬度(P<0.05),颗粒耐久性指数(PDI),脆度和淀粉糊化度。挤压碎米和膨化碎米产生较高(P<0.05)的平均日采食量(ADFI),平均日增重(ADG)增加(P<0.05),饲料转化率(FCR)降低(P<0.05),降低腹泻率(P<0.05)。饲喂膨化碎米的仔猪表现出较高的干物质表观总道消化率(ATTD)水平(P<0.05),总能量(P<0.05),粗蛋白(P<0.05)和有机质(P<0.05)。此外,膨化碎米和膨化碎米补充剂增加了肠道中的乳酸杆菌和双歧杆菌水平,而观察到潜在病原体梭状芽孢杆菌_sensu_strictio_1和链球菌的丰度较低。日粮补充膨化碎米和膨化碎米对血液生化指标没有显著影响。合并,用碎米代替70%的玉米未能显示出显着的效果。总的来说,膨化碎米和膨化碎米的补充对颗粒质量有积极的提高,增长业绩,营养素消化率,断奶仔猪的肠道菌群。
The present study was conducted to assess the effect of different processing techniques of broken rice on processing quality of pellet feed, growth performance, nutrient digestibility, blood biochemical parameters, and fecal microbiota of weaned piglets. A total of 400 crossbred piglets (Duroc × Landrace × Yorkshire) with a mean initial body weight (BW) of 7.24 ± 0.52 kg were used in a 28-d experiment. Piglets were randomly distributed to one of 4 treatment and 10 replicate pens per treatment, with 10 piglets per pen. The dietary treatments were as follows: CON, corn as the main cereal type in the dietary; BR, 70% of the corn replaced by broken rice; ETBR, 70% of the corn replaced by extruded broken rice; EPBR, 70% of the corn replaced by expanded broken rice. Extruded broken rice and expanded broken rice supplementation significantly (P < 0.05) increased hardness, pellet durability index, crispness, and starch gelatinization degree. Extruded broken rice and expanded broken rice generated a higher (P < 0.05) average daily feed intake, increased (P < 0.05) average daily gain, decreased (P < 0.05) feed conversion ratio, and lowered (P < 0.05) the diarrhea rate. Piglets fed extruded broken rice displayed high apparent total tract digestibility levels of dry matter (P < 0.05), gross energy (P < 0.05), crude protein (P < 0.05), and organic matter (P < 0.05). In addition, extruded broken rice and expanded broken rice supplementation had increased Lactobacillus and Bifidobacterium levels in gut, whereas a lower abundance of the potential pathogens Clostridium_sensu_strictio_1 and Streptococcus was observed. Dietary supplementation of extruded broken rice and expanded broken rice failed to show significant effects on blood biochemical parameters. Combined, 70% corn substituted with broken rice failed to show significant effects. Collectively, extruded broken rice and expanded broken rice supplementation had positively enhanced the pellet quality, growth performance, nutrient digestibility, and gut microbiota of weaned piglets.
Weaned piglets represent a critical phase in animal husbandry, and with the rising demand for meat, the consumption of animal feed has surged. Corn, a vital constituent of animal feed, has been consumed at an accelerated pace. In this regard, the use of broken rice as an alternative to corn is a feasible solution. Nevertheless, due to the incomplete development of piglets’ bodies, higher quality feed is necessary. The processing technique applied to the feed has a significant impact on its effectiveness. Thus, we experimented to assess the effect of different processing techniques on the feed efficiency of weaning piglets, substituting corn with broken rice, extruded broken rice, and expanded broken rice. The study results revealed that the application of extruded and expanded broken rice improved the feed pellet quality, growth performance, nutrient digestibility, and gut microbiota of weaned piglets. Furthermore, extruded broken rice exhibited a superior feeding effect compared to expanded broken rice.