Effects of liquid feeding of corn condensed distiller's solubles and whole stillage on growth performance, carcass characteristics, and sensory traits of pigs

Xiaojian Yang; Carissa Nath; Alan Doering; John Goihl; Samuel Kofi Baidoo

摘要

Background:The immense growth in global bioethanol production has greatly increased the supply of by-products such as whole stillage and condensed distiller's solubles,which could be potentially used for animal feeding.The objective of this study was to investigate effects of liquid feeding high levels of corn condensed distiller's solubles (CCDS) and whole stillage (CWS) on growth performance,carcass characteristics,belly firmness and meat sensory traits of pigs.Methods:A total of 256 pigs were blocked by sex and initial BW (13.5 ± 2.5 kg),and pens of pigs (8 pigs/pen) were randomly allocated to 1 of 4 dietary treatments (8 pens/treatment):1) corn-soybean meal based diet as control,2) 25％ CWS + 5％ CCDS,3) 19.5％ CWS + 10.5％ CCDS,and 4) 19.5,26,and 32.5％ CWS + 10.5,14,and 17.5％ CCDS in phases 1 (28 d),2 (38 d),and 3 (60 d),respectively.Inclusion levels of CCDS and CWS for Treatments 1,2,and 3 were fixed during all the three phases of the experiment.Inclusion levels of CWS and CCDS were on 88％ dry matter basis.The liquid feeding system delivered feed from the mixing tank to feed troughs by high-pressure air,had sensors inside feed troughs,and recorded daily feed intake on the basis of a reference feed intake curve.The pigs were fed 5 to 10 times per day with increasing frequency during the experiment.Results:Control pigs had greater (P ＜ 0.05) average daily gain (0.91 vs.0.84,0.85,0.85 kg/d) and gain to feed ratio (0.37 vs.0.33,0.34,0.34) than pigs in the other three treatments during the overall period.Compared with the control,the other three groups had (P＜ 0.05) or tended to have (P ＜ 0.10) lower carcass weight and backfat depth due to lighter (P＜ 0.05) slaughter body weight,but similar (P＞ 0.10) dressing percentage,loin muscle depth,and lean percentage were observed among the four treatments.Inclusion of CWS and CCDS reduced (P＜ 0.05) or tended to reduce (P ＜ 0.10) belly firmness but did not influence (P＞ 0.10) the overall like,flavor,tenderness and juiciness of loin chops when compared with the control group.Conclusion:In conclusion,our results indicate that including 30-50％ of a mixture of whole stillage and condensed distiller's solubles in the growing-finishing diets may reduce growth performance,carcass weight and belly firmness,but does not affect pork sensory traits.

机译：背景：全球生物乙醇产量的巨大增长极大地增加了副产品的供应，例如整个釜馏物和浓缩蒸馏酒的可溶物，它们有可能被用于动物饲养。本研究的目的是研究高水平液体饲喂的影响浓缩蒸馏水可溶物（CCDS）和全釜馏物（CWS）对猪的生长性能，car体特性，腹部坚挺度和肉感官性状的影响。方法：共有256头猪被性别和初始体重限制（13.5±2.5 kg），将猪的猪圈（8头/笔）随机分配到4种饮食疗法中的1种（8笔/疗法）：1）以玉米豆粕为基础的日粮作为对照，2）25％CWS + 5％CCDS，3） 1阶段（28 d），2（38 d）和3（60 d）阶段分别为19.5％CWS + 10.5％CCDS和4）19.5,26和32.5％CWS + 10.5,14和17.5％CCDS在实验的所有三个阶段中，处理1,2和3的CCDS和CWS的包含水平是固定的。以88％干物质为基础。液体饲喂系统将饲料从混合罐通过高压空气输送到饲料槽，在饲料槽内装有传感器，并根据参考饲料摄入曲线记录每日的饲料摄入量。结果：对照猪平均日增重（0.91 vs.0.84,0.85,0.85 kg / d）较大（P ＜0.05），日增重比（0.37vs。在整个时期内，其他三组治疗的猪均比对照组高0.33、0.34、0.34。与对照组相比，其他三组的to体重量和后脂肪深度降低（P <0.05）或倾向于降低（P <0.10）四种处理的屠宰体重较轻（P ＜0.05），但屠宰率，腰肌深度和瘦肉率相似（P＞ 0.10）。CWS和CCDS的夹杂物减少（P ＜0.05）或趋于减少（P ＜0.05）。 P ＜0.10）腹部紧实，但不影响（P ＜0.10）l的整体风味，嫩度和多汁性结论：结论是，我们的结果表明，在生长肥育的日粮中包含30-50％的全釜馏物和浓缩蒸馏酒可溶物的混合物可能会降低生长性能，car体重量和腹部紧实度，但不会影响猪肉的感官特性。

Effects of liquid feeding of corn condensed distiller's solubles and whole stillage on growth performance, carcass characteristics, and sensory traits of pigs

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