盐藻粉、壳聚糖和VA对奶牛日粮中氮、钙与磷表观消化率的影响

试验主要通过研究壳聚糖、盐藻粉、VA对奶牛日粮中N、Ca及P表观消化率的影响,旨在为科学地确定奶牛日粮中壳聚糖、盐藻粉及VA的添加剂量提供理论依据。试验分两部分进行,试验一选用18头荷斯坦奶牛作为试验动物,随机分成壳聚糖组、盐藻粉组和对照组,每组6头,壳聚糖和盐藻粉在奶牛日粮中的添加剂量为15g/(d·头)、9mg/(d·头),对照组不添加。试验二选用24头荷斯坦奶牛作为试验动物,采用2×2随机试验设计分成4个处理组,各组在基础日粮中添加不同水平(110、165IU/kg·BW)及处理(未处理、过瘤胃保护)的VA。2个试验的试验期均为60d,其中预饲期10d,正试期50d。试验结果表明,奶牛日粮中添加壳聚糖可以显著地提高日粮N、P的表观消化率,降低Ca的表观消化率(P<0.05)。盐藻粉可以显著地提高日粮中N的表观消化率(P<0.05)。奶牛日粮中添加高剂量(165IU/kg·BW)的VA及过瘤胃保护的VA对日粮N、P、Ca的表观消化率无显著的影响,但N、P表观消化率有增加的趋势,Ca的表观消化率有降低的趋势。     

王不留行提取物对泌乳中期奶牛血清生化指标、泌乳相关激素及免疫功能的影响

试验旨在研究王不留行提取物对泌乳中期奶牛血清生化指标、泌乳相关激素及免疫功能的影响。选用胎次(2~4胎)、体重、产奶量均相近的泌乳中期中国荷斯坦奶牛32头,随机分为4组,每组8头,分别饲喂王不留行提取物添加水平为0(对照组)、5.7 g/(头·d)(低剂量组)、19 g/(头·d)(中剂量组)、38 g/(头·d)(高剂量组)的试验日粮。预试期7 d,正试期35 d。结果表明,与对照组相比,各剂量组血清中总蛋白、白蛋白含量均无明显变化(P>0.05),其中在第30天时,血糖含量呈升高趋势,甘油三酯、尿素氮含量呈下降趋势,但差异均不显著(P>0.05);与对照组相比,各剂量组血清中催乳素和生长激素水平有一定程度的提高,其中中、高剂量组在第30天时差异显著(P<0.05);与对照组相比,各剂量组血清中IgA、IgG含量呈升高趋势,而IgM含量呈下降趋势,但差异均不显著(P>0.05)。综上所述,日粮中添加王不留行提取物可改善奶牛机体的能量代谢水平及蛋白质的利用率,促进体内脂类代谢,提高产奶量,建议泌乳中期奶牛日粮中王不留行提取物添加量为19~38 g/(头·d)。     

饲粮添加包被蛋氨酸和包被叶酸对杜寒杂交二代公羔生长性能、养分消化代谢和瘤胃微生物蛋白质合成的影响

本试验旨在研究饲粮添加包被蛋氨酸（coated methionine,CM）和包被叶酸（coated folic acid,CFA）对杜寒杂交二代公羔生长性能、养分消化代谢及瘤胃微生物蛋白质合成的影响。采用2×2完全随机试验设计,试验因素为按照试验动物体重添加CFA（0 mg,CFA-或4 mg·（kg·d）^-1,CFA+）和CM（0 g,CM-或0.1 g·（kg·d）^-1,CM+）。将40只体重相近（（30.08±1.34）kg）的4月龄杜寒杂交二代公羔随机分为4组,分别饲喂基础日粮（CM-&CFA-）、基础日粮+CFA 4 mg·（kg·d）^-1（CM-&CFA+）、基础日粮+CM 0.1 g·（kg·d）^-1（CM+&CFA-）、基础日粮+CFA 4 mg·（kg·d）^-1+CM 0.1 g·（kg·d）^-1（CM+&CFA+）。试验期85 d,其中预试期15 d,正试期70 d,在试验期结束前10 d开展消化代谢试验。试验结果表明：1）饲粮添加CFA显著提高了1~30 d平均日增重和饲料转化率（P<0.05）,而添加CM仅显著提高了1~30 d饲料转化率（P=0.036）,对1~30 d平均日增重无显著影响（P>0.05）;饲粮中添加CFA、CM显著提高了杜寒杂交二代公羔31~60 d和1~60 d平均日增重及相应阶段饲料转化率（P<0.05）,二者对1~60 d饲料转化率具有显著互作效应（P=0.007）;2）饲粮添加CFA显著提高了干物质、有机物、中性洗涤纤维和酸性洗涤纤维的表观消化率（P<0.05）,饲粮添加CM有提高有机物表观消化率的趋势（P=0.066）及增加干物质消化率的趋势（P=0.095）,二者对养分消化率无显著互作效应（P>0.05）;3）饲粮添加CFA、CM显著降低了尿能排出量,显著提高了能量消化率和代谢率（P<0.05）;通过显著降低粪氮、尿氮及总排泄氮（P<0.05）,从而显著提高了氮的表观消化率和沉积氮水平（P<0.05）,且二者同时添加对减少氮排泄、提高氮消化率有显著互作效应（P<0.05）;4）饲粮添加CM、CFA显著提高嘌呤衍生物的尿排泄量,提高瘤胃微生物蛋白质合成量（P<0.05）。饲粮添加CM、CFA提高干物质和有机物表观消化率,改善总能消化率和代谢率,增加氮表观消化率和氮沉积量,促进杜寒杂交二代公羔的生长。     

过瘤胃赖氨酸和过瘤胃蛋氨酸对泌乳早期奶牛生产性能影响的研究

试验选用荷斯坦泌乳早期奶牛100头,随机分为对照组和试验组。两组基础日粮相同,但试验组奶牛在试验前期60d添加过瘤胃赖氨酸(RPLys)24g/头·d、过瘤胃蛋氨酸(RPMet)15g/头·d,试验后期60d添加RPLys48g/头·d、RPMet30g/头·d。结果表明,试验组产奶量平均提高1.25kg,试验前期增幅达2kg(P<0.05),试验中后期差异不显著(P>0.05),试验组和对照组的乳脂率和乳蛋白率差异不显著(P>0.05)。     

猪源发酵乳酸杆菌对保育猪生长性能、养分表观消化率、粪便微生物数量及血清免疫指标的影响

本试验研究了日粮中添加不同浓度的猪源发酵乳酸杆菌(Lactobacillus fermentum)对保育猪生长性能、养分表观消化率、粪便微生物数量和血清免疫指标的影响。选择160头保育猪,日龄为(30±2)d,体重为(7.85±0.68)kg,随机分成4组,每组4个重复,每个重复10头猪。对照组饲喂基础日粮,试验组在基础日粮中分别添加0.1%、0.2%和0.3%的猪源发酵乳酸杆菌制剂,试验期35d。结果显示,添加不同浓度猪源发酵乳酸杆菌对保育猪的各项指标均有改善效果,其中,0.2%发酵乳酸杆菌组的效果最好,与对照组相比,其平均日增重提高8.70%(P<0.05),料重比降低4.62%(P<0.05),日粮中粗蛋白质、钙和总磷的表观消化率显著提高(P<0.05),粪便中大肠杆菌数量显著下降(P<0.05),血清中IgG含量提高了8.39%(P<0.05)。因此,在保育猪饲料中添加猪源发酵乳酸杆菌能够提高机体免疫力和生长性能,提高日粮中粗蛋白质、钙和总磷的表观消化率,降低粪便中的大肠杆菌数量。     

日粮中添加莫能菌素对泌乳期奶牛生产性能及养分消化率的影响

本试验旨在研究日粮中添加不同水平莫能菌素对泌乳期奶牛生产性能和养分消化率的影响。选取泌乳期荷斯坦奶牛12头,采用重复4×4拉丁方试验设计,随机分成4组,每组3个重复,对照组饲喂基础日粮(A组),试验组分别在基础日粮的基础上添加300 (B组)、400 (C组)、500 (D组)mg/(头·d)莫能菌素。试验分为4期,每期28 d (7 d预饲期,21 d正饲期)。结果表明,日粮中添加莫能菌素可以提高泌乳期奶牛产奶量和乳糖率,降低乳脂率,其中C组和D组的平均日产奶量分别较对照组提高4.08%和4.57%(P < 0.05),D组的乳糖率较对照组提高1.99% (P < 0.05),D组的乳脂率较对照组降低7.45% (P < 0.05),但对4%乳脂校正乳(FCM)、乳中非脂固型物(SNF)比例和乳蛋白率的影响不显著(P > 0.05)。莫能菌素会提高奶牛的体增重(BWG)及粗蛋白质(CP)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)的表观消化率,其中D组的BWG较对照组提高34.62% (P < 0.05),3个试验组的CP消化率分别较对照组提高3.73%、4.35%和5.35% (P < 0.01),D组的NDF和ADF消化率分别较对照组提高7.24%和9.08% (P < 0.05),另外,莫能菌素对泌乳期奶牛的粗脂肪(EE)、钙(Ca)和磷(P)的消化率及干物质采食量(DMI)影响不显著(P > 0.05)。综上所述,在泌乳期奶牛日粮中添加莫能菌素可以促进奶牛机体代谢,提高奶牛养分消化率和经济效益,其适宜添加量为400~500 mg/(头·d)。     

酵母培养物对泌乳奶牛生产性能、表观消化率及瘤胃发酵参数的影响

文章旨在探究日粮中添加酵母培养物(YC)对泌乳奶牛生产性能、表观消化率及瘤胃发酵参数的影响,试验以30头生产性能相似的泌乳中期奶牛为研究对象,分为对照组(15头)和试验组(15头).对照组饲喂基础日粮,试验组在基础日粮中添加YC100 g/d·头.结果表明:(1)试验组奶牛DM与NDF消化率显著高于对照组;(2)试验组...     

日粮不同钴水平对奶牛泌乳性能、营养物质消化率和血液生化指标的影响

本研究旨在确定日粮中添加不同水平碳酸钴对奶牛泌乳性能、营养物质消化率和血液生化参数的影响。试验选用30头泌乳中期荷斯坦奶牛,随机分为5组,分别饲喂基础日粮（对照组）和试验日粮（4个试验组）,试验日粮为在基础日粮中以碳酸钴（CoCO₃）的形式,分别添加钴0.15、0.30、0.75和1.50 mg·kg^-1 DM。试验期56 d,其中适应期14 d,正试期42 d。测定每日采食量和产奶量,并采集奶样测定乳成分含量,采集饲料和粪样测定营养物质表观消化率,采集血样测定血液生化指标。结果表明,与对照组相比,日粮中添加不同水平的碳酸钴后,奶牛干物质采食量（DMI）和乳成分含量均无显著差异（P>0.05）。但添加钴0.30和0.75 mg·kg^-1 DM提高了产奶量（P<0.05）;与对照组相比,添加钴0.75 mg·kg^-1 DM组显著提高了酸性洗涤剂纤维（ADF）和粗蛋白（CP）的消化率（P<0.05）。此外,添加钴1.50 mg·kg^-1 DM组的血浆葡萄糖含量和谷草转氨酶（AST）活性降低（P<0.05）,日粮添加钴0.75 mg·kg^-1 DM降低了谷丙转氨酶（ALT）和碱性磷酸酶（ALP）的活性（P<0.05）;红细胞（RBC）、血红蛋白（HGB）含量和红细胞压积（HCT）随日粮碳酸钴水平升高而升高且呈二次曲线变化（P<0.05）。综上,泌乳中期的荷斯坦奶牛日粮Co水平推荐在0.30~0.75 mg·kg^-1 DM,最适添加水平是0.73 mg·kg^-1 DM。     

乳酸菌对饲喂黄曲霉毒素B1日粮的肉鸡生长性能、养分消化率和屠宰性能的影响

本试验旨在研究黄曲霉毒素B₁(AFB₁)日粮添加乳酸菌(LAB)对肉鸡的生长性能、养分消化率及屠宰性能的影响。试验选用1日龄AA肉鸡公鸡240只,随机分为4个处理组,每个处理6个重复,每个重复10只鸡。正对照组:无AFB₁日粮;负对照组:1~21d:正对照组日粮＋40μg/kgAFB₁,22~42d:正对照组日粮＋80μg/kgAFB₁;LAB组:负对照组日粮＋1.5×10¹¹CFU/kgLAB;HSCAS组:负对照组日粮＋3g/kgHSCAS。试验期42d。试验结果显示,负对照组日粮显著降低了肉鸡平均日采食量和体增重(P<0.05),显著提高了料重比(P<0.05),添加LAB和HSCAS均明显改善了生产性能,且LAB组的效果优于HSCAS组。1~21d时,与负对照组相比,添加LAB干物质、能量、粗脂肪、钙和磷的表观消化率分别提高9.6%(P<0.05)、9.5%(P<0.05)、10.1%(P<0.05)、15.2%(P<0.05)和18.9%(P<0.05),添加HSCAS能将干物质、能量、粗脂肪和磷的表观消化率提高9.7%(P<0.05)、6.6%(P<0.05)、6.3%(P<0.05)和17.4%(P<0.05),且LAB组能量和钙的表观消化率显著高于HSCAS组(P<0.05)。LAB组的全净膛率和胸肌率也显著高于HSCAS组(P<0.05)。综上所述,在AFB₁污染日粮中添加LAB制剂,对肉鸡的生产性能、养分表观消化率和屠宰性能均具有显著的改善作用,其作用效果显著优于HSCAS脱霉剂。     

复合酶制剂对泌乳奶牛瘤胃发酵、营养物质表观消化率及生产性能的影响

本试验旨在研究饲粮中添加不同剂量的复合酶制剂对泌乳奶牛瘤胃发酵、营养物质表观消化率、血清指标及生产性能的影响。选择体重、胎次[(2.30±0.06)胎]、产奶量[(37.00±0.03)kg/d]、泌乳天数[(90±0.15)d]相近的9头泌乳期荷斯坦奶牛,随机分成3组,每组3头。采用3×3拉丁方设计,对照组饲喂基础饲粮,试验组Ⅰ和试验组Ⅱ分别在基础饲粮基础上添加10和20 g/(头·d)的复合酶制剂,进行3期动物试验。每期21 d,其中14 d为预试期,7 d为采样期。结果表明:1)饲粮中添加10 g/(头·d)的复合酶制剂显著提高奶牛瘤胃液中丁酸的浓度(P0.05),而对总挥发性脂肪酸和其他挥发性脂肪酸的浓度无显著影响(P0.05);2)与对照组相比,饲粮中添加10 g/(头·d)的复合酶制剂显著提高奶牛对干物质、粗蛋白质和中性洗涤纤维的表观消化率(P0.05),对酸性洗涤纤维的表观消化率也有一定的提高作用(P=0.06);3)饲粮中添加10和20 g/(头·d)的复合酶制剂显著提高了奶牛的产奶量(P0.05),且10 g/(头·d)组的4%校正乳(4%FCM)产量、乳脂产量和乳糖产量分别较对照组提高4.85(P0.05)、0.49(P0.05)和0.32 kg/d(P0.05);4)复合酶制剂的添加未对奶牛血清指标产生显著影响(P0.05)。综上,饲粮中添加10 g/(头·d)复合酶制剂能够显著提高泌乳奶牛的产奶量、乳脂产量和瘤胃液丁酸浓度,且饲喂效果优于添加量为20 g/(头·d)时。综合考虑,泌乳奶牛饲粮中复合酶制剂的推荐添加量为10 g/(头·d)。     

Effects of Pasting Anionic Salt and RPC on Production Performance and Blood Biochemical Indexes of Perinatal Dairy Cows

This experiment was conducted to study the effects of pasting anionic salt and RPC on production performance and blood biochemical indexes of perinatal dairy cows.Using randomized trial design, 20 healthy Holstein cows which according to the tire time (2 to 4), age, last time lactation quantity and parturition date were chosen.They were divided into four groups, 5 cows per group.The control group was fed TMR diet, Ⅰ, Ⅱ, Ⅲ groups were fed the basal diet +200 g pasting anion salt and supplemented with 10, 20, 30 g/(head·d) RPC, respectively.There were 7 days to pilot test, formal test was from antenatal 21 d to parturition.The results showed that:①DMI of all experimental groups were significantly higher than that of control group during most of antenatal 21 days (P< 0.05);The nutrients apparent digestibility of all experimental groups were generally higher than that of control group;Add 20, 30 g/(head·d) RPC was significantly increased the apparent digestibility of CP, NDF, ADF (P< 0.05);The apparent digestibility of Ca of all experimental groups were significantly higher than that of control group (P< 0.05);Add 30 g/(head·d) RPC was significantly increased the apparent digestibility of EE (P< 0.05).②Among postpartal 90 days, the total milk yield of all experimental groups were significantly or extremely significantly higher than that of control group (P< 0.05;P< 0.01);Add 20, 30 g/(head·d) RPC was significantly enhanced the feed conversion rate (P< 0.05);Add 30 g/(head·d) RPC was improved the percentage of milk dry matter, milk protein and milk fat of colostrum (P< 0.05).③Serum Ca²⁺ concentration of all experimental groups were significantly higher than that of control group (P< 0.05);Add 20, 30 g/(head·d) RPC was significantly increased the part time plasma TG levels (P< 0.05), significantly reduced the part time plasma contents of TCHO, BHBA and NEFA (P< 0.05).In conclusion, among the perinatal period added pasting anionic salt and RPC could improve early prenatal DMI and part nutrients apparent digestibility, improve perinatal blood calcium and blood lipid metabolism, and enhance the production performance and feed conversion rate, based on adding 200 g pasting anion salt among early perinatal, the best add amount of RPC was 30 g/(head·d).     

Effect of Amino Acid Balance Diet on Production Performance,Serum Biochemical Indexes and Economic Benefits in Dairy Cows

This experiment was conducted to study the effect of amino acid balance diet on production performance,serum biochemical indexes and economic benefits in dariy cows.36 healthy Holstein cows in the early lactation period were selected,the average number of lactation (DIM) was (39.69±12.48) d,the average parity was 3.02±0.64.Principle of experiments using single factor randomized experimental design accroding to age,milk yield,parity identical same or similar,the 36 Holstein cows were assigned by random block design to 3 groups,and each group were 12 cows.The control group cows were fed with TMR diets only adding rumen-protected methionine (HMBi);Diets of group 1 and 2 were on the basis of control group,respectively adding two kinds of rumen-protected lysine levels in order to balance the amino acid in diet.The results showed as follows:① Compared with control group,the feeding conversion ratio in groups 1 and 2 were increased by 10.60% and 11.26% (P>0.05),respectively,while the dry matter intake had no significantly changed (P>0.05),the 4% average daily milk yield in groups 1 and 2 were significantly increased by 8.65% and 10.58% (P<0.05),respectively,and the milk fat and milk protein yield in groups 1 and 2 were significantly or extremely significantly increased (P<0.05;P<0.01),respectively.Adding amino acid balance diet had no significantly effects on reproductive performance and health conditions in dariy cows (P>0.05).② When feeding the amino acid balance diets for 60 days,the contents of GLU and TAA in serum of dairy cows were significantly increased (P<0.05),while the BUN content was significantly decreased (P<0.05).③ Compared with control group,the economic benefits of groups 1 and 2 were increased by 15.09 and 16.36 yuan/(head·d).The results indicated that feeding the amino acid balance diets could significantly improve production performance of dairy cows,and there was a tendency to improve metabolic conditions.     

氨基酸平衡日粮对奶牛生产性能、血清生化指标及经济效益的影响

试验旨在研究氨基酸平衡日粮对奶牛生产性能、血清生化指标及经济效益的影响。选择36头体况良好的泌乳初期的健康荷斯坦奶牛,平均泌乳天数(DIM)为(39.69±12.48) d、平均胎次为(3.02±0.64)胎。采用单因素随机试验设计,按年龄、产奶量、胎次相同或相近的原则,将36头荷斯坦奶牛区组配对后随机分为3组,每组12头奶牛,其中对照组奶牛饲喂仅添加有瘤胃保护性蛋氨酸(HMBi)的TMR日粮;试验1、2组日粮在对照组的基础上分别添加2种水平的瘤胃保护性赖氨酸,以平衡日粮中的氨基酸。结果表明,①与对照组相比,试验1、2组奶牛饲料转化率分别提高10.60%和11.26%(P>0.05),而干物质采食量没有显著变化(P>0.05),平均每日4%校正乳产量分别显著提高了8.65%和10.58%(P<0.05),并可显著或极显著增加乳脂和乳蛋白产量(P<0.05;P<0.01);饲喂氨基酸平衡日粮对奶牛繁殖性能、健康状况无显著影响(P>0.05)。②饲喂氨基酸平衡日粮60 d时,奶牛血清中葡萄糖、总氨基酸含量显著升高(P<0.05),尿素氮含量显著降低(P<0.05)。③与对照组相比,试验1、2组奶牛经济效益分别增加了15.09和16.36元/(头·d)。综上所述,饲喂氨基酸平衡日粮能显著提高奶牛的生产性能,具有改善奶牛代谢状况的趋势。     

Effects of Dietary Supplemental Different Levels of Sugar Beet Pulp on the Digestion and Metabolism of Nutrients of Yanqi Horse

This experiment was conducted to study the effects of supplemental different levels of sugar beet pulp on the nutrients of digestion and metabolism in Yanqi horse.12 Yanqi horses were randomly divided into three groups according to performance,body weight,body measurement and age.The groups were referred to as the control group,group Ⅰ and group Ⅱ,each group with 4 Yanqi horses.Yanqi horses in the control group,group Ⅰ and group Ⅱ were supplied with 0,0.6,1.2 kg/d of sugar beet pulp on the condition of feeding the same basal diet and roughage (oat straw).The total duration of the experiment was 20 days,the first 15 days of the experiment was the preliminary period,and the formal experiment lasted for 5 days.The results showed that compared with the control group,the apparent digestibility of OM,NDF,ADF and digestibility amount of NDF,ADF in group Ⅱ was extremely significantly improved (P<0.01),the digestibility amount of crude protein,calcium and the apparent digestibility of OM in group Ⅱ was significant difference (P<0.05);The digestibility amount of NDF,ADF of group Ⅰ was increased by 8.19% (P<0.05) and 9.43% (P<0.05),respectively,and the apparent digestibility (amount) of OM,crude protein,calcium were no significant difference (P>0.05).Compared with group Ⅰ,the apparent digestibility (amount) of OM,NDF,ADF of group Ⅱ were significantly or extremely significant difference (P<0.05;P<0.01),but the apparent digestibility (amount) of crude protein,calcium were no significant difference (P>0.05).Compared with the control group and group Ⅰ,the digestible engergy of group Ⅱ was increased by 14.92% (P<0.01) and 11.23% (P<0.01),but no significant difference was observed between group Ⅰ and control group (P>0.05);The metabolic engergy of group Ⅱ was increased by 11.73% (P<0.05) and 14.83% (P<0.05),respectively.Therefore,the digestion amount of OM,CP of Yanqi horse and the digestion amount and the apparent digestibility of NDF,ADF could be significantly or extremely significantly improved by the supplementation of 1.2 kg/d of sugar beet pulp,and the ability to use the nutrients were obviously improved for Yanqi horse.     

日粮添加不同水平甜菜粕对焉耆马营养物质消化代谢的影响

试验旨在研究日粮中添加不同水平甜菜粕对焉耆马营养物质消化代谢的影响。选取运动成绩、体重、年龄和体尺相近的焉耆马12匹,随机分为3组,每组4匹。对照组、试验Ⅰ组和试验Ⅱ组在饲喂相同的基础日粮和粗饲料(燕麦秸)的条件下分别补饲0、0.6和1.2 kg/d甜菜粕。试验期20 d,其中预试期15 d,正试期5 d。结果表明,与对照组相比,试验Ⅱ组焉耆马对有机物、NDF、ADF的消化量和对日粮NDF、ADF的表观消化率均有极显著提高(P<0.01),对粗蛋白质、钙的消化量和对有机物的表观消化率影响差异显著(P<0.05);试验Ⅰ组焉耆马对NDF和ADF的消化量分别增加了8.19%、9.43%,均达到了显著水平(P<0.05),而对有机物、粗蛋白质、钙的消化量和表观消化率均差异不显著(P>0.05);试验Ⅱ组焉耆马对有机物、NDF和ADF的消化量和表观消化率与试验Ⅰ组相比,均达到了显著或极显著水平(P<0.05;P<0.01),但对粗蛋白质和钙的消化量和表观消化率影响差异不显著(P>0.05)。试验Ⅱ组焉耆马的消化能与对照组和试验Ⅰ组相比分别提高14.92%(P<0.01)和11.23%(P<0.01),而试验Ⅰ组与对照组相比差异不显著(P>0.05);对代谢能而言,试验Ⅱ组比对照组和试验Ⅰ组分别提高11.73%(P>0.05)和14.83%(P<0.05)。因此,日粮中添加1.2 kg/d的甜菜粕,可显著提高焉耆马对日粮有机物和粗蛋白质的消化量,极显著提高NDF和ADF的表观消化量(率)及消化能,可明显改善焉耆马对营养物质的利用率。