Replacement of Forage Fiber Sources with Dried Distillers Grains with Solubles and Corn Germ Meal in Holstein Calf Diets

This study was carried out to determine the effect of replacement of forage fiber sources from alfalfa and Leymus chinensis with nonforage fiber sources（NFFS） from dried distillers grains with solubles and corn germ meal on calves growth, rumen development and blood parameters. 48 female and 12 male calves（（110.55±15.36） kg of body weight and 12 wk of age） were assigned randomly to four dietary treatments（15 calves/treatment） in a completely randomized design. Experimental diets were： 0% NFFS（control）, 9% NFFS（group 1）, 18% NFFS（group 2）, 27% NFFS（group 3）, and contained equivalent neutral detergent fiber and total digestible nutrients, respectively. The dry matter intake was similar among diets, averaging 3.33 kg d-1, and no differences were detected for body weight, withers height, body length and heart girth. In addition, the development of rumen, reticulum, omasum and abomasum also were similar among diets. Dry matter, crude protein, and neutral detergent fiber digestibilities increased with the increasing levels of NFFS in the experimental diets, but had no significant effect. Blood urea nitrogen, total protein and glubulin were not affected by the dietary treatment, but group 3 resulted in the highest（P〈0.05） concentrations of glucose and the lowest（P〈0.05） concentrations of triglycerides and albumin. In conclusion, dried distillers grains with solubles（DDGS） and corn germ meal（CGM） were available and alternative fiber sources for Holstein calf diets.

Amino acid digestibility of heat damaged distillers dried grains with solubles fed to pigs

The primary objective of this experiment was to determine the effects of heat treatment on the standardized ileal digestibility （SID） of amino acids （AA） in corn distillers dried grains with solubles （DDGS） fed to growing pigs. The second objective was to develop regression equations that may be used to predict the concentration of SID AA in corn DDGS. A source of corn DDGS was divided into 4 batches that were either not autoclaved or autoclaved at 130℃ for 10, 20, or 30 min. Four diets containing DDGS from each of the 4 batches were formulated with DDGS being the only source of AA and CP in the diets. A N-free diet also was formulated and used to determine the basal endogenous losses of CP and AA. Ten growing pigs （initial BW： 53.5 ＋ 3.9 kg） were surgically equipped with a T-cannula in the distal ileum and allotted to a replicated 5 x4 Youden square design with 5 diets and 4 periods in each square. The SID of CP decreased linearly （P〈 0.05） from 77.9% in non-autoclaved DDGS to 72.1, 66.1, and 68.5% in the DDGS samples that were autoclaved for 10, 20, or 30 min, respectively. The SID of lysine was quadratically reduced （P〈 0.05） from 66.8% in the non-autoclaved DDGS to 54.9, 55.3, and 51.9% in the DDGS autoclaved for 10, 20, or 30 min, respectively. The concentrations of SID Arginine, Histidine, Leucine, Lysine, Methionine, Phenylalanine, or Threonine may be best predicted by equations that include the concentration of acid detergent insoluble N in the model （r2 = 0.76, 0.68, 0.67, 0.84, 0.76, 0.73, or 0.54, respectively）. The concentrations of SID Isoleucine and Valine were predicted （r2 = 0.58 and 0.54, respectively） by the Lysine：CP ratio, whereas the concentration of SID Tryptophan was predicted （r2 = 0.70） by the analyzed concentration of Tryptophan in DDGS. In conclusion, the SID of AA is decreased as a result of heat damage and the concentration of SID AA in heat-damaged DDGS may be predicted by regression equations developed in this experiment.

Use of a post-production fractionation process improves the nutritional value of wheat distillers grains with solubles for young broiler chicks

Background： Post-production fractionation of wheat distillers grains with solubles（DDGS） increases their crude protein content and reduces their fiber content.This experiment was conducted to determine the effects of fractionation of wheat DDGS on apparent total tract digestibility（ATTD） and performance when fed to broiler chicks（0–21 d）.Methods： A total of 150,day-old,male broiler chicks（Ross-308 line;Lilydale Hatchery,Wynyard,Saskatchewan） weighing an average of 49.6 ± 0.8 g were assigned to one of five dietary treatments in a completely randomized design.The control diet was based on wheat and soybean meal and contained 20% regular wheat DDGS.The experimental diets contained 5,10,15 or 20% fractionated wheat DDGS added at the expense of regular wheat DDGS.Results： The ATTD of dry matter and gross energy were linearly increased（P 0.01） as the level of fractionated wheat DDGS in the diet increased.Nitrogen retention was unaffected by level of fractionated wheat DDGS（P 0.05）.Weight gain increased linearly（P = 0.05） as the level of fractionated wheat DDGS in the diet increased.Feed intake,feed conversion and mortality were unaffected by level of fractionated wheat DDGS in the diet（P 0.05）.Conclusions： Post-production fractionation of wheat DDGS improves their nutritional value by lowering their fiber content and increasing their content of crude protein and energy.These changes in chemical composition supported increased weight gain of broilers fed wheat DDGS.

Effects of dietary replacement of soybean meal with dried distillers grains with solubles on the microbiota occupying different ecological niches in the rumen of growing Hu lambs

Background:Diet has a profound impact on the rumen microbiota,and the impact can vary among the different rumen ecological niches(REN).This study investigated the effects of dietary replacement of soybean meal(SBM)with dried distillers grains with solubles(DDGS)on the rumen microbiota occupying different REN of growing Hu lambs.After a 9-week feeding trial,6 lambs from each dietary treatment(SBM vs.DDGS-based diets)were slaughtered for sample collection.The microbiota of the rumen solid,liquid,and epithelium fractions was examined using amplicon sequencing analysis of bacterial 16S rRNA gene,functional prediction,and qPCR.Results:No interaction of dietary protein source(PS)and REN were detected for virtually all the measurements made in this study.The DDGS substitution resulted in very limited influence on bacterial community structure.However,the metabolic pathways predicted from 16S rRNA gene sequences varied greatly between SBM-and DDGS-based diets.The populations of rumen total bacteria,fungi,sulfate-reducing bacteria(SRB),and methanogens were not influenced by DDGS substitution,but the population of protozoa was reduced.The bacterial communities in rumen solid(RS)and liquid(RL)were similar in taxonomic composition but were different in relative abundance of some taxa.In contrast,the bacterial composition and relative abundance of rumen epithelium(RE)were greatly distinct from those of the RS and the RL.In alignment with the bacterial relative abundance,the metabolic pathways predicted from 16S rRNA genes also varied greatly among the different REN.The populations of total bacteria,protozoa,and methanogens attached to the RE were smaller than those in the RS and RL,and the fungal population on the rumen epitheliumwas smaller than that in the RS but similar to that in the RL.On the contrary,the SRB population on the RE was greater than that in the RS and RL.Conclusions:Substitution of SBM with DDGS had greater impact to the protozoa than to the other microbes,and the microbial community structure and functions at different REN are distinct and niche-adapted.

Effects of Organic Fertilizers Made from Distiller＇s Grains on the Growth and Development of Flue-cured Tobacco

Pot experiments were conducted to study the effects of different organic fertilizers made from distiller＇s grains on the physiological characteristics and growth of flue-cured tobacco. The results showed that the agronomic traits and biomass of flue-cured tobacco in the three treatments were higher than that of the control group,and the mixed application of different organic fertilizers made from distiller＇s grains and compound fertilizer could promote the growth and development of flue-cured tobacco significantly.

Amino acid digestibility in low-fat distillers dried grains with solubles fed to growing pigs

The objective of this experiment was to determine the standardized ileal digestibility（SID） of amino acids（AA） in 3sources of distillers dried grains with solubles（DDGS） with different concentrations of fat.Twelve growing barrows（initial body weight：76.1 ± 6.2 kg） were randomly allotted to a replicated 6×4 Youden square design with 6 diets and 4 periods.The fat content of the 3 sources of DDGS were 11.5,7.5,and 6.9%respectively.Diets contained 60%DDGS and fat concentration of the diets were 7.5,52,and 5.2%,respectively.Two additional diets containing the 2sources of DDGS with 75 and 6.9%fat were also formulated,and corn oil was added to these diets to increase the concentration of fat in the diets to levels that were calculated to be similar to the diet containing conventional DDGS with 11.5%fat.A N-free diet was also formulated to calculate endogenous losses of crude protein（CP） and AA from the pigs.Pigs were fed experimental diets during four 7-d periods.The first 5 d of each period were an adaptation period and ileal digesta were collected on d 6 and 7 of each period.The apparent ileal digestibililty（AID） and SID of CP and all indispensable AA,except AID Pro and SID of Trp,were greater（P 〈 0.01） in conventional DDGS than in the 2 sources of DDGS with reduced fat.Adding oil to the diets containing the 2 sources of DDGS with reduced fat did not consistently increase SID of AA.In conclusion,conventional DDGS has greater SID values for most AA compared with DDGS that contains less fat and inclusion of additional oil to diets containing low-fat DDGS does not increase AID or SID of AA.The lower AA digestibility in low-fat DDGS could not be overcome by the inclusion of additional fat to the diets.

Production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller's grains

Daqu distiller's grains were co-fermented as raw materials by Trichoderma.koningii and Trichosporon cutaneum to produce microbial oils,which can provide raw materials for bio-diesel development.The single factor tests were used to investigate the effects of ratio of strains,inoculum size,culture temperature and culture time on the production of microbial oils.The best processing conditions were obtained by orthogonal test through measuring the content of microbial oils in product.The result shows that the microbial oils content of the co-fermented product under the ratio of Trichoderma.koningii to Trichosporon cutaneum of 1:1,the inoculum size of strains of 11% at 28 °C for 6 d is 7.15 g/L.It is shown that the production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller's grains is possible.The research provides a new idea for the reuse of Daqu distiller's grains and also provides a new way for the development of microbial oils.

Effect of Graded Levels of Wheat Distillers Grains with Solubles on Nutrient Digestibility,Performance and Carcass Traits of Growing-Finishing Pigs Fed Diets Based on Wheat and Field Peas

This trial was conducted to determine the effects of graded levels of wheat distillers dried grains with solubles （DDGS） on nutrient digestibility, performance and carcass characteristics of pigs （21.8 to 112.3 kg） fed diets based on wheat and field peas. Forty crossbred pigs were assigned on the basis of sex and weight to one of five dietary treatments in a 5 x 2 （treatment x sex） factorial arrangement. The experimental diets were based on wheat and field peas and were formulated to contain 0, 4.86%, 9.71%, 14.57% or 19.42% wheat DDGS during the growing period and 0, 4.01%, 8.05%, 12.10% and 16.14% wheat DDGS during the finishing period. At the highest levels, ~vheat DDGS supplied 100% of the supplementary protein. The digestibility coefficient for gross energy showed a tendency towards a linear decline （P 〈 0.08 ） as the level of wheat DDGS in the diet increased while digestibility coefficients for dry matter and crude protein were unaffected （P 〉 0. 05 ） by inclusion level of wheat DDGS. During the growing period （21.8 to 60.8 kg）, weight gain of pigs fed wheat DDGS declined （P〈0.01） linearly. The impairment in growth appeared to be associated with a decrease in feed in- take which also declined linearly （P 〈 0.01 ） with increasing inclusion level of wheat DDGS. Feed conversion was unaffected by level of wheat DDGS. During the finishing period （60.8 to 112.3 kg）, and over the entire experimental period （21.8 to 112.3 kg ）, weight gain and feed conversion declined linearly as the dietary inclusion level of wheat DDGS increased. Carcass traits were generally unaffected by the inclusion of wheat DDGS with the exception of a trend towards a linear （P = 0.10） reduction in lean yield and a linear increase （ P = 0.09） in loin fat as the level of wheat DDGS in the diet increased. Overall, these results suggest that wheat DDGS are inferior to field peas as a supplementary protein source for use in swine rations.

Optimization of C/N ratio preparation of protein-rich and multi-enzymes feed thallus through synergic fermentation of mixed distillers'grains

A new procedure of determining optimal C/N (the rate of carbon source to nitrogen source) of mixed distillers' grains for combined bacteria synergic fermentation is established. At the same time an improved method evaluating bacteria growth, called method of dry cell weighing by filtering is developed. For each combination of C and N, their initial and residual contents before and after fermentation respectively are determined. Then followed the calculation of utilization of C and N sources by the compound bacteria. The optimal C/N is finally located from among the utilization of C and N of several combinations and the weight of produced mass of oven dried thallus. The conditions of fermentation are: inoculum size 10%, temperature 30 0℃, rotational speed 170 r/min, shake culture time 48h. The best results obtained from orthogonal experiments are: maximum mass of oven dried thallus is 14 693g in a liter liquid medium, maximum utilization rate of carbon source is 98 13% and maximum utilization rate of nitrogen is 78 14%. Optimal C/N is 5 1.

Effects of Distiller's Grain Substrate with Acid Regulation on the Growth of Tobacco Seedlings in Floating Breeding System

In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller s grain substrate. The results showed that when 60% of humic acid was added to the distiller s grain substrate made from coarse distiller s grains, fine distiller s grains, perlite and vermiculite, both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover, the emergence rate of tobacco seedlings, the rate of strong tobacco seedlings, leaf number, stem height, root growth and quality of tobacco seedlings were good.

发酵酒糟在养牛产业中的应用研究进展

酒糟作为酿酒产业的副产物,近年在动物饲料中被广泛应用,其可替代日粮中的部分精料用于畜禽养殖,在一定程度上可缓解畜禽养殖业的饲料短缺问题。酒糟经过微生物发酵后能延长储存时间,而且能提高饲料中粗蛋白质含量及优化氨基酸组成,同时降低粗纤维含量,营养价值较高,提升了酒糟的饲用价值。本文主要对几种发酵酒糟特点、利用方式及发酵酒糟在养牛产业中的应用效果的研究进展进行综述,以期为发酵酒糟饲料化的研发与应用奠定基础。

超声辅助低温碱提木聚糖及制备低聚木糖

以酒糟为原料,研究超声波辅助碱法对提取木聚糖影响,并考察提取工艺对木聚糖酶制备低聚木糖的影响。响应面实验优化超声波辅助碱提木聚糖,结果表明:在NaOH浓度8%、料液比1∶20、提取温度58℃、超声波功率955W和提取时间20 min条件下,木聚糖提取率为72.31%。通过液相色谱、凝胶色谱和红外光谱分析表明:提取木聚糖样品主要成分为木聚糖,超声处理降低相对分子量和聚合度。酶解制备低聚木糖(XOS),在酶用量为100U/g底物、pH 8.0、50℃时,酶解6 h得率达80%以上,XOS中木二糖-木四糖的含量总和(XOS2-4)占64.5%。XOS为2 mg/mL时,对DPPH自由基清除率为87.3%。本研究通过超声辅助碱溶液降低木聚糖提取能耗和木聚糖相对分子量,有效提高XOS酶解得率。该工艺将有助于提高酿酒副产物酒糟的附加值。

酒糟蛋白替代豆粕对九斤黄鸡生长性能、血清生化和免疫指标的影响

[目的]研究不同比例的湿磨预处理去壳酱香型酒糟蛋白(wet milling pretreated and dehulled-moutai distiller's grains, WDMDG)替代豆粕对九斤黄鸡生长性能、血清生化和免疫指标的影响,为WDMDG替代豆粕提供科学依据。[方法]选取1日龄健康九斤黄公雏450只,随机分为3组,每组设3个重复,每个重复50只鸡,对照组饲喂基础日粮,试验Ⅰ和试验Ⅱ组分别在基础日粮中添加5%、8%WDMDG等营养替代豆粕,试验为期26 d,分别测定九斤黄鸡平均日增质量、平均日采食量、料重比和死淘率,并对九斤黄鸡血清中总蛋白、白蛋白、尿素氮含量、谷丙转氨酶和谷草转氨酶活力和IgG、IgA、lgM水平进行测定。[结果]与对照组相比,试验Ⅰ和试验Ⅱ组九斤黄鸡的各项生产性能均没有显著差异,试验Ⅰ和试验Ⅱ组鸡血清中尿素氮含量分别提高了4.88%(P>0.05)和19.51%(P<0.05),各组鸡血清中总蛋白、白蛋白含量、谷草转氨酶和谷丙转氨酶活力及IgG、IgA和IgM水平差异均不显著。[结论]在九斤黄鸡日粮中采用5%WDMDG等营养替代基础日粮中部分豆粕,对其日增质量、料重比、死淘率、血清生化指标和免疫指标均无显著负面影响。

酒糟锅炉周期性冒黑烟的原因分析及控制研究

针对酒糟锅炉在调试过程中出现的烟囱周期性冒黑烟问题,首先对锅炉燃料成分、酒糟燃烧特性、锅炉结构、锅炉燃烧方式及烟气流程进行了介绍;然后分析了黑烟的产生及危害;紧接着分析了锅炉烟囱周期性冒黑烟的原因,并在此基础上对螺旋给料机进行了改造,对湿式除尘器进行了更换;最后经过效果检查,锅炉烟囱周期性冒黑烟的问题得到了有效解决,这为类似锅炉技术改造提供了参考。

微生物复合菌剂添加对白酒酒糟堆肥腐熟速度的影响

为提高白酒酒糟堆肥的腐熟速度,以酱香型白酒酒糟为主要原料,添加曲草和钙镁磷肥调节通气性和pH值,采用高温好氧堆肥工艺进行36 d的堆肥试验,通过测定堆肥过程中的温度、pH值、电导率值、氮含量和种子发芽指数,探究由枯草芽孢杆菌(Bacillus subtilis)、解淀粉芽孢杆菌(Bacillus amyloliquefaciens)和酿酒酵母(Saccharomyces cerevisiae)组成的复合菌剂的添加对堆肥过程及腐熟速度的影响。结果表明,未接种菌剂的对照组和复合菌剂组各自经历30 d的高温期后进入降温期,达到了高温堆肥的无害化要求。与对照组相比,添加复合菌剂使堆肥1~19 d的堆体升温速度增加0.16℃/d,1~9 d的pH值增速提高0.04/d,18~24、30~36 d的电导率值降低0.15~0.30 mS/cm,同时12~36 d铵态氮的积累减少20.81%~33.23%。添加复合菌剂后,种子发芽指数于第30天升高至70.85%,达到有机肥腐熟标准,而对照组仅为47.21%。综上,复合菌剂通过加快有机物降解、快速改善酸性环境、降低盐含量和铵态氮含量,促进种子发芽指数快速提高,加快了白酒酒糟堆肥进程,提高了堆肥腐熟速度。

挤压物料水分对白酒糟醇溶蛋白性质的影响

本文通过单螺杆挤压机改性白酒糟(Distiller's grains,DGs),研究了挤压物料水分(21%、24%、27%、30%、33%)对白酒糟醇溶蛋白(Prolamins from distiller's grains,PDGs)理化(溶解度、表面疏水性、巯基和二硫键含量)、功能(持水、持油能力)和二、三级结构等性质的影响。结果表明,不同挤压物料水分对PDGs改性效果具有显著影响,随物料水分增加,挤压对PDGs天然结构的破坏程度逐渐增大,分子构象的改变促进内部亲水基团的暴露和二硫键的生成,物料水分为27%时,溶解度提高了1.56倍,达到34.75%,表面疏水性降低了56.11%,增强了持水能力,热变性温度由96.79℃增大到102.53℃,热稳定性更强,PDGs经变性重排后,蛋白聚集体有序程度增加。而物料水分过高时(高于27%),挤压造成PDGs过度变性,稳定聚集态的破坏反而会弱化其亲水、热特性、有序程度等,说明挤压物料水分对PDGs性质的改变具有十分重要的调控作用。

发酵酒糟对西威牛血液、分泌型免疫球蛋白A和肠道黏膜相关菌群的影响

为研究发酵酒糟对西威牛免疫指标、炎症指标以及十二指肠细菌群落的影响,试验将18头西威公牛随机分为3组,对照组饲喂基础饲粮,试验1、2组分别添加15%、30%发酵酒糟,预试期15 d,正试期90 d。结果表明:与对照组相比,试验1组免疫球蛋白G(IgG)、分泌型免疫球蛋白A(SIgA)、Muribaculaceae分别显著提高了18.83%、27.99%、25.77%(P<0.05),试验1组疣微菌科UCG-010极显著降低了10.43%(P<0.01),试验2组白介素2、白介素4、白介素6、CD8、免疫球蛋白A、变形菌门、放线菌门、纤维杆菌门、疣微菌门和Muribaculaceae分别显著提高了22.22%、17.43%、19.31%、11.91%、18.91%、31.64%、41.5%、50%、42.86%和25.41%(P<0.05),试验2组瘤胃菌科显著降低了27.17%(P<0.05),试验2组CD4分子、IgG、SIgA和毛螺菌科分别极显著提高了14.53%、24.89%、38.52%和50%(P<0.01),试验2组疣微菌科UCG-010极显著降低24.51%(P<0.01)。与试验1组相比,试验2组CD4分子、毛螺菌科分别显著提高了6.01%、21.36%(P<0.05),试验2组普雷沃氏菌科显著降低了29.20%(P<0.05),试验2组疣微菌科UCG-010极显著降低了12.75%(P<0.01)。由此可见,饲粮添加30%发酵酒糟可提高西威牛的免疫力、降低炎症反应、改善十二指肠菌群,效果优于添加15%发酵酒糟。

干白酒糟在反刍动物生产中的应用研究进展

随着畜牧业的发展,我国畜禽养殖数量逐渐增加,因此带来动物饲料资源短缺的问题。为解决这一问题,开发非常规饲料成为发展畜牧生产的关键。我国是白酒酿造大国,每年产出大量白酒糟残余物。干白酒糟作为一种白酒酿造残余物,具有较高的消化率,含有丰富的可溶性糖、蛋白质等物质,这些营养物质有助于提高饲料的适口性,促进消化液的分泌,易被动物机体吸收,从而有助于动物机体的生长发育。干白酒糟能够调节肠道菌群结构,改变反刍动物瘤胃的内环境。因干白酒糟来源广泛、价格低廉,可以替代部分饲料原料,有利于降低饲养成本。文章在分析干白酒糟营养价值的基础上,进一步对干白酒糟饲料化加工技术、饲喂方式、在反刍动物生产中的应用及干白酒糟饲料化利用的限制因素进行综述,以期为干白酒糟在饲料生产中的应用提供参考。

微生态制剂和发酵白酒糟对西门塔尔牛生长性能、血清生化和免疫指标以及粪便菌群的影响

本试验旨在探究饲粮中添加微生态制剂和发酵白酒糟对西门塔尔牛生长性能、血清生化和免疫指标以及粪便菌群的影响。试验采用单因素试验设计,选取12头6月龄左右健康的西门塔尔牛,体重(155±5)kg,随机分为2组,每组6头。对照组饲喂基础饲粮;试验组分别在第1~60天和第61~120天在基础饲粮中添加2.0%和2.5%发酵白酒糟,并添加60 g/t微生态制剂。预试期7 d,正试期120 d。结果表明:1)与对照组相比,试验组西门塔尔牛平均日增重(ADG)极显著提高(P<0.01),料重比(F/G)显著降低(P<0.05)。2)与对照组相比,试验组西门塔尔牛血清免疫球蛋白A(IgA)、免疫球蛋白G(IgG)和免疫球蛋白M(IgM)含量均显著提高(P<0.05)。3)与对照组相比,试验组西门塔尔牛粪便菌群Shannon指数显著提高(P<0.05);主坐标分析(PCoA)和相似性分析(ANOSIM)结果表明,对照组和试验组之间粪便菌群差异显著(R=0.327,P=0.007)。在门水平上,西门塔尔牛粪便菌群中的优势菌门为厚壁菌门(Firmicutes)和拟杆菌门(Bacteroidetes);在属水平上,粪便菌群中的优势菌属为瘤胃球菌科UCG-005(Ruminococcaceae_UCG-005)。综上所述,饲粮中添加微生态制剂和发酵白酒糟可以提高西门塔尔牛生长性能和免疫功能,并提高粪便菌群多样性,维持消化道内环境稳态。

白酒糟中添加花生秧与玉米粉对其混合发酵品质和体外瘤胃降解率的影响

本试验旨在通过研究添加不同比例的花生(Arachis hypogaea)秧和玉米(Zea mays)粉对浓香型白酒糟厌氧发酵品质和体外瘤胃降解率的影响,提高白酒糟的营养价值和延长安全储存期。采用2因素3水平试验设计,花生秧的添加量分别为白酒糟(鲜重)的0、5%、10%;玉米粉的添加量分别为白酒糟(鲜重)的0、2%、4%。厌氧发酵后评定发酵品质和体外瘤胃降解率。结果表明:1)厌氧发酵180 d时,添加花生秧显著提高了白酒糟的pH(P<0.05),对乳酸(LA)、乙酸(AA)含量无显著影响(P>0.05),添加玉米粉显著降低了白酒糟的AA含量(P<0.05),对pH和LA含量无显著影响(P>0.05)。同时添加5%花生秧和4%玉米粉显著降低了NH3-N/TN以及丙酸(PA)含量(P<0.05)。对照组的V-Score评分最低,为87.83,同时添加5%花生秧和4%玉米粉处理组的V-Score评分最高,为97.23。2)未经厌氧发酵时,添加花生秧显著提高了干物质(DM)、中性洗涤纤维(NDF)的体外瘤胃降解率(P<0.05),添加玉米粉对DM、NDF的体外瘤胃降解率无显著影响(P>0.05)。同时添加10%花生秧和4%玉米粉显著提高了粗蛋白(CP)、酸性洗涤纤维(ADF)的体外瘤胃降解率(P<0.05)。厌氧发酵180 d时,添加花生秧和玉米粉均显著提高了DM、ADF的体外瘤胃降解率(P<0.05)。同时添加10%花生秧和4%玉米粉显著提高了CP、NDF的体外瘤胃降解率。综上所述,添加花生秧、玉米粉可改善白酒糟厌氧发酵品质,提高发酵白酒糟的体外瘤胃降解率;同时添加5%花生秧和4%玉米粉改善厌氧发酵品质的效果最好,同时添加10%花生秧和4%玉米粉提高发酵白酒糟体外瘤胃降解率的效果最好。