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1.
许腾 《畜牧与兽医》2006,38(11):23-24
选用5~8月龄,体重35~40 kg,健康无病的小尾寒羊30只(公羊15只,母羊15只),随机分成3个处理,每个处理10只。根据青贮处理方法不同,试验分3组,添加尿素青贮玉米秸秆为试验1组;青贮玉米秸秆为试验2组;自然玉米秸秆为对照组。研究结果说明:尿素青贮玉米秸秆饲喂小尾寒羊平均日增重比一般青贮秸秆提高了33.33%,比自然玉米秸秆提高了101.03%;日获利则分别提高了0.32元和0.60元。增重效果和经济效益最好(P<0.01)。秸秆青贮后改善了饲料的适口性,添加尿素提高了饲料中非蛋白氮的含量。两种青贮均可提高饲料转化效率,但以尿素青贮处理秸秆后饲料报酬最好,经济效益最佳。  相似文献   

2.
本试验旨在探究不同外源纤维素酶(EFE)添加水平对舍饲牦牛生产性能、养分表观消化率和瘤胃发酵参数的影响,找出适宜的添加量。采用单因素试验设计,试验因素为EFE的添加水平(0、0.2、0.4 g/kg日粮干物质),选取24头年龄为4周岁左右的麦洼公牦牛,根据体重按照随机区组试验设计分为3个处理组,分别为对照、0.2、0.4 g/kg EFE添加组,每个处理8个重复,每个重复1头牛。结果表明:0.2、0.4组牦牛的日增重(ADG)分别比对照组提高了11.91%和21.42%(P=0.014),同样,2个试验组牦牛的干物质采食量(DMI)显著高于对照组(P=0.036),此外,试验组的饲料增重比(F/G)有低于对照组的趋势(P=0.069),其中以0.4 g/kg添加组最低;试验组牦牛对日粮GE、ADF和NDF的表观消化率均显著高于对照组(P0.05),其中以0.4组最高,而对CP(P=0.235)和OM(P=0.191)的表观消化率没有显著影响;试验组牦牛的瘤胃NH3-N浓度显著低于对照组(P0.05),TVFA浓度则以0.4组最高(P=0.005),而乙/丙值最低(P=0.024)。因此,本试验条件下,牦牛日粮中EFE的适宜添加水平为0.4 g/kg日粮干物质。  相似文献   

3.
试验旨在研究日粮中添加不同比例青贮香蕉茎秆对海南黑山羊生长性能、养分表观消化率及血液指标的影响。试验选择16只体重接近的海南黑山羊,随机分为4个处理,每个处理4只(公母各半),单栏饲养,正试期30d。所有试验羊饲喂相同精料,粗料中分别用青贮香蕉茎秆替代0、25%、50%、75%新鲜王草。结果表明:各组黑山羊平均日增重、精料干物质采食量、料重比差异不显著(P0.05)。替代50%王草组黑山羊血清有较高的TP、GLB和TC,以及较低的ALT浓度,其余的血液生理生化指标差异不显著(P0.05)。随着日粮中青贮香蕉茎秆比例的增加,黑山羊日均养分采食量随之减少(P0.05),并且养分表观消化率随之增加(P0.05)。考虑到青贮香蕉茎秆的干物质含量较低,在本试验条件下,青贮香蕉茎秆替代25%新鲜王草为较合适的替代比例。  相似文献   

4.
本试验旨在为合理利用花生秧及提高氮素利用率提供理论依据。选择产奶量一致、处于泌乳中期、体重相近、胎次相同的12头中产荷斯坦奶牛,分为3组,每组4个重复。根据3×3拉丁方试验设计,试验分3期进行,每期预饲15d,采样期6d。分别饲喂含有不同花生秧与玉米青贮配比的全混合日粮(TMR),3种TMR中花生秧与玉米青贮的干物质(DM)配比分别为1.0∶3.9(A组)、1.0∶1.2(B组)、1.0∶0.4(C组)。结果表明,1)花生秧与玉米青贮配比对中产荷斯坦奶牛的干物质采食量、生产性能及血液指标没有显著影响(P0.05);2)奶牛的各乳成分组成均没有显著性差异(P0.05),但随着花生秧比例的增加,牛奶体细胞数有降低的趋势,B组较A组的体细胞数下降了35.4%;3)随着日粮中花生秧添加比例的增加,经济效益有所提高;4)日粮B显著降低了粪氮占摄入氮的比例(P0.05)。花生秧与玉米青贮配比在1.0∶1.2时,奶牛氮素利用及经济效益效果最佳。  相似文献   

5.
本试验是在小尾寒羊的饲料中分别添加0.5%、1.0%、1.5%和2.0%中草药组方"羊宝",结果表明:"羊宝"能够提高小尾寒羊的消化率,使增重速度加快.试验组平均日增重分别比对照组提高了31.23%、53.00%、61.57%和61.84%,其中添加量1.5%的组饲料干物质/增重与精料/增重比对照组分别降低了67.10%和47.65%."羊宝"添加量1.5%的组效果最佳.不同添加水平对小尾寒羊血清尿素氮含量影响显著(P<0.05),1.0%、1.5%、2.0% 处理组均显著低于对照组,分别比对照组降低了约26.58%、34.08%、37.19% ;血清葡萄糖、乳酸脱氢酶含量与对照组相比均有所降低,但差异均不显著(P＞0.05);血清碱性磷酸酶含量影响显著(P<0.05),2.0%处理组显著高于对照组,与对照组相比提高了约14.49% .其它试验组与对照组差异均不显著(P＞0.05).  相似文献   

6.
利用花生秧与玉米黄贮不同配比作为湖羊的粗饲料,观察其对湖羊生长性能及经济效益产生的影响。通过日均采食量、日均增重、料肉比检测,结果显示:添加100%的花生秧组(V组)增重、平均日增重最多,与其他各组存在显著性差异(P0.05);添加75%玉米黄贮+25%花生秧组(II组)增重、平均日增重最低;V组日均采食量最高,I组(添加100%玉米黄贮)日均采食量最低;V组料肉比在各试验组中最低,II组最高。各组随着花生秧的添加量逐渐增加,日粮成本逐渐降低,I组饲料成本最高,V组饲料成本最低;V组每天产生的经济效益最高,达到7.36元/只·天,其次为Ⅳ组、I组、Ⅲ组、II组。综合比较试验数据可知,日粮中添加100%花生秧能使湖羊养殖获得较高的经济效益。  相似文献   

7.
为了明确添加微生物菌剂对青贮饲料品质的影响,探明添加微生物制剂饲料对肉羊的育肥效果,本研究通过对36只白山羊分3个小组进行试验,每组分别饲喂玉米黄秸秆裹包料(CK)、全株玉米裹包青贮料(试验I组),添加壮乐美青贮发酵剂干玉米秸秆裹包料(试验II组)。试验结果表明:试验II组增重极显著高于试验I组和对照组(P0.01),试验I组增重极显著高于对照组(P0.01),但试验II组比对照组和试验I组更能节省饲料,从经济效益来看,更大程度的增加了收益。因此,添加了壮乐美青贮发酵剂的干玉米秸秆裹包料,不仅提高了肉羊的育肥效果,同时节省了生产成本,具有较大的推广应用价值。  相似文献   

8.
试验旨在通过探讨不同添加剂对花生秧青贮品质的影响,为提高花生秧单独青贮效果提供理论依据和技术支持。青贮试验包括4个处理组,即对照组(不添加任何添加剂)、甲酸处理组、纤维素酶处理组和绿汁发酵液处理组,每个处理组3个重复,贮存40 d后开包检测。结果显示,纤维素酶组感官评分最高,等级为良,其他3组均为一般;与对照组相比,绿汁发酵液组p H值极显著降低(P0.01),甲酸组和纤维素酶组氨氮/总氮显著降低(P0.05),甲酸组乳酸含量极显著提高(P0.01);各处理组青贮料的干物质、粗蛋白、中性洗涤纤维和酸性洗涤纤维含量均无显著差异(P0.05)。在试验条件下,综合感官评定及实验室测定结果,以纤维素酶组青贮花生秧品质最佳。  相似文献   

9.
为了研究青贮杂交构树替代蛋白饲料对肉羊粪污排放和表观消化率的影响,试验选取健康状况良好、体重相近的萨寒杂交肉羊48只,随机分成4个处理,其中A组为对照组,饲喂基础日粮,B、C、D组为试验组,分别饲喂添加不同比例的青贮杂交构树日粮,进行为期100 d的饲喂试验。结果表明:与对照组相比,3个试验组对肉羊单位增重粪污排放量以及DM、CP、NDF、ADF、EE和P消化率均无显著影响(P0.05),但随着青贮杂交构树添加量的增加,单位增重粪污排放量有增加趋势,DM、CP、NDF和EE的消化率有降低趋势。说明青贮杂交构树可以作为肉羊日粮中的蛋白饲料,但适宜添加量有待进一步研究。  相似文献   

10.
为了研究莱芜黑山羊生长育成期能量蛋白质的营养需要量,试验采用饲养试验和消化试验设计,将48只体重为(12.00±2.15)kg的生长育成期莱芜黑山羔羊平均分为3组,每组2个重复(公、母各为1个重复),每个重复8只,参考中国肉羊(2004)饲养标准饲喂不同的试验日粮,使山羊目标日增重分别为150 g/d、100 g/d、50 g/d。结果表明:在本试验条件下,随着进食日粮营养成分的增加,生长期的莱芜黑山羔羊对日粮干物质(DM)、粗蛋白(CP)、总能(GE)的表观消化率呈现降低趋势(P0.05),羔羊体增重呈现增加趋势(P0.05),饲料转化效率相差不明显(P0.05),但都能够很好地利用日粮中的蛋白质和能量。公羊表现的一些特征优于母羊,包括日粮营养成分的消化率、饲料转化率、体增重速度、蛋白质利用性、能氮平衡性等(P0.05)。生长期的莱芜黑山羔羊干物质进食量(DMI)、粗蛋白进食量(CPI)、总能进食量(GEI)、消化能进食量(DEI)与羊的代谢体重(W0.75)、日增重(ADG)的回归关系模型分别为DMI=76.784W0.75+3.212ADG-139.191(r2=0.965),CPI=15.112W0.75+0.653ADG-85.359(r2=0.896),GEI=1.412W0.75+0.047ADG-2.606(r2=0.875),DEI=0.119W0.75+0.095ADG-1.759(r2=0.912)。说明公母应尽早合理分群,生长育成期莱芜黑山羊的日增重可能达不到150 g/d。  相似文献   

11.
In many regions, optimum dry matter (DM) content of corn crop pre-ensilage cannot be ensured for management, agronomical and climatic reasons. Under such conditions, corn crops are harvested at low DM, and are easily exposed to unfavourable fermentation pathways and plant spoilage and wastage. Thus, it is a major question for dairy agriculturists whether certain microbial inoculants application to low-DM corn crop pre-ensilage affects silage quality and cow performance. The objective was to determine effects of adding microbial inoculants to low-DM corn crop at ensiling on silage quality, rumen fermentation and milk production of eight Holstein cows fed the treated silages. Whole corn plant was harvested at milk stage of maturity with 204 g DM/kg of fresh crop, cut to a theoretical particle length of 2 cm, filled in 60 t bunker silos, and treated layer by layer with either no inoculant (control), inoculant 'E' (100 000 cfu/g of fresh crop) containing mainly Lactobacillus plantarum, inoculant 'B' (100 000 cfu) containing mainly Pediococcus pentosanus, Lactobacillus plantarum and Propionibacter freudenreichii or a mixture of inoculants 'E' and 'B' (200,000 cfu). Inoculants were mixed with water and sprayed on thin layers of corn chops layer by layer followed by rolling to ensure proper oxygen outage and even microbial distribution throughout the plants. Eight multiparous lactating Holstein cows at 100 ± 20.5 days in milk were used in a replicated 4 × 4 Latin square design with four 20-day periods including 14 days of adaptation and 6 days of sampling. Dietary treatments were mixed rations containing corn silages with or without the inoculants. The basal diet contained 32.9% corn silage, 14.3% alfalfa hay and 52.8% concentrate on a DM basis. Inoculants did not affect silage pH or content of DM, CP, lactate, acetate, ash and total volatile fatty acids (VFA). Applying 'B' to corn crop resulted in higher water soluble carbohydrates (47.7 g/kg vs 29.8 g/kg) and lower neutral detergent fibre (494.1 g/kg vs 464.0 g/kg) compared with control. The combined inoculants increased silage butyrate relative to other treatments. The mixture of 'E + B' and 'B' moderately decreased rumen pH, when compared to 'E'. The 'E + B' increased rumen VFA concentrations relative to 'E' and control silage. Dry matter intake increased when corn crop was ensiled with 'E' than with control and 'E + B', but this had little impact on milk production or its energy concentrations. Milk energy yield tended to decrease when 'B' but not 'E' was applied alone, compared with control and 'E + B'. The estimated proportion of the consumed energy secreted in milk increased when inoculants were applied together compared with when they were used separately. Results suggest positive effects of Lactobacillus plantarum containing inoculant on feed intake, some effects on corn silage water soluble carbohydrates, fibre and butyrate contents, rumen pH and VFA concentrations; but no significant effects on total tract nutrient digestibility or productivity of Holstein cows fed diets with 329 g corn silage/kg of diet DM.  相似文献   

12.
A study involving a 2 x 2 x 2 factorial arrangement of treatments was conducted to evaluate effects of hybrid (Pioneer 3335 and 3489), maturity (half milkline and blacklayer), and mechanical processing (field chopper with and without on-board rollers engaged) on intake and digestibility of corn silage. Forty Angus steers (322 +/- 5.2 kg BW) were assigned to the eight silage treatments (five steers per treatment) and individually fed using electronic gates. Diets consisted of 60% corn silage and 40% chopped alfalfa hay (DM basis). Following a 5-d adaptation period, intake was measured for 7 d and subsequently fecal samples were collected for 5 d. Chromic oxide (5 g/d) was fed beginning 7 d before fecal sample collection and digestibility was determined by the ratio of Cr in the feed and feces. Steers were reallocated to treatments and these procedures were repeated, providing 10 observations per treatment. In addition, all silages were ruminally incubated in six mature cows for 0, 8, 16, 24, 48, and 96 h to determine extent and rate of DM, starch, NDF, and ADF disappearance. Processing increased DMI of hybrid 3489 but did not affect DMI of hybrid 3335 (hybrid x processing; P < 0.06). Total tract digestibility of DM, starch, NDF, and ADF decreased (P < 0.01) as plant maturity increased. Maturity tended to decrease starch digestibility more for hybrid 3489 than for hybrid 3335 (hybrid x maturity; P < 0.10). Processing increased (P < 0.01) starch digestibility but decreased (P < 0.01) NDF and ADF digestibility, resulting in no processing effect on DM digestibility. There was a numerical trend for processing to increase starch digestibility more for latethan for early-maturity corn silage (maturity x processing; P = 0.11). Processing increased in situ rates of DM and starch disappearance and maturity decreased in situ disappearance rates of starch and fiber. These data indicate that hybrid, maturity, and processing all affect corn silage digestibility. Mechanical processing of corn silage increased starch digestibility, which may have been associated with the observed decreased fiber digestibility.  相似文献   

13.
The brown midrib-3 (bm3) gene mutation has been incorporated into corn plants to potentially improve fiber digestibility. The objectives of this study were to determine the effect of bm3 corn silage on digestion and performance of growing beef steers and to determine whether limiting intake would further enhance fiber digestibility of bm3 corn silage. A bm3 hybrid and its isogeneic normal counterpart were harvested at three-quarters kernel milk line. Neutral detergent fiber, ADF, and ADL were 4.5, 6.9, and 1.9 units lower, respectively, and DM was 5.4 units higher for bm3 than for normal silage. In Trial 1, eight ruminally fistulated Angus crossbred steers (224 +/- 24 kg) were randomly assigned to a 2 x 2 factorial arrangement of treatments in a replicated 4 x 4 Latin square design. Steers had ad libitum feed access or were restricted to 80% of ad libitum intake of diets containing 86% normal corn silage (Control) or bm3 corn silage (BMCS). The remainder of the diets consisted of soybean meal, urea, monensin, vitamins, and minerals. Dry matter intake was greater (P < 0.01) for steers offered ad libitum access to BMCS than for those with ad libitum access to the Control diet. The BMCS treatment resulted in improved (P < 0.05) apparent total-tract digestibility of DM, OM, NDF, and ADF. Mean concentration of total VFA and molar proportions of acetate were increased (P < 0.05) by feeding BMCS. There tended to be a DMI x hybrid interaction (P = 0.16) for apparent total-tract digestibility of NDF. When diets were offered ad libitum, BMCS increased NDF digestibility by 10.5 percentage units compared with Control, but, when DMI was limited, BMCS increased NDF digestibility by 15.8 percentage units. In Trial 2, 128 steer contemporaries of those used in Trial 1 (245 +/- 13 kg) were offered ad libitum access to BMCS or Control diets as used in Trial 1. After a 112-d treatment period, concentrate in the diet was increased, and all steers were fed a common finishing diet. During the 112-d treatment period, steers receiving BMCS consumed 0.45 kg more DM/d (P < 0.05) and had similar ADG (P > 0.10), compared with those steers receiving the Control silage. This resulted in poorer (P < 0.01) feed efficiency for steers receiving BMCS. Finishing phase and overall performance of the steers was not different (P > 0.10) due to treatment. Although feeding BMCS in growth-phase diets resulted in increased daily DMI and improved digestibility of DM and fiber, it did not result in improved steer feedlot ADG compared with Control silage.  相似文献   

14.
Two-hundred sixty-four English-type crossbred cattle (mean initial BW 282 ± 6 kg) were used in a completely randomized design to evaluate the effects of restricted feeding and roughage source in finishing beef cattle diets. Treatments consisted of diets with 7.5% corn silage (DM basis), fed either ad libitum or restricted, and 7.5% (DM basis) corn stalks or millet hay fed ad libitum. Total DM intake was reduced by 4, 11, and 9% by restricting corn silage, corn stalks, and millet hay treatments, respectively. Average daily gain was not affected (P>0.05) by treatment, whereas feed efficiency was improved (P<0.05) for all treatments compared with corn silage diets fed ad libitum. Total feed cost of gain was highest (P<0.05) for the corn silage treatment fed ad libitum. Hot carcass weight, quality grade, and yield grade were not affected by treatment, and cattle fed restricted corn silage had a lower (P<0.05) dressing percentage. Fecal analysis of Cr concentrations indicated no difference (P>0.05) in OM, DM, or N digestibilities. However, restricted corn silage-fed cattle and cattle fed millet hay ad libitum tended to exhibit increased (P>0.05) OM, DM, and N digestibilities compared with the cattle fed corn silage ad libitum. The cattle fed corn stalks ad libitum tended to have decreased (P>0.05) OM, DM, and N digestibilities compared with the steers fed corn silage ad libitum. Fecal output was not different (P>0.05) between treatments. Restricted corn silage rations, corn stalk rations fed ad libitum, and millet hay rations fed ad libitum tended to decrease (P>0.05) fecal output by cattle compared with cattle fed the corn silage ration ad libitum.  相似文献   

15.
The effects of length of cut and mechanical processing on corn silage utilization by dairy cows were evaluated. Corn silage treatments were harvested at the black line stage of maturity and chopped at a theoretical length (TLC) of 9.5 mm without processing (Control) or at a TLC of 19 mm with processing at roller clearances of 1, 3, or 5 mm. Eight multiparous Holstein cows were assigned in a replicated 4 × 4 Latin square design with 21‐day periods. Corn silage treatments were fed in diets containing 78.3% corn silage and 21.7% soybean meal (DM basis). Treatments had no significant effects on DMI, milk and 4% FCM production. The efficiency of converting DMI to FCM tended to be greater with processing at a roller clearance of 1 and 3 mm than at other clearances. Apparent total tract digestibility of starch tended to be lowest for cows fed control silage, and increased as roller clearance decreased. Ruminal ammonia concentrations in cows fed control silage were numerically higher than in cows fed proccesed silages. These results suggest that when corn silage is harvested at the black line of maturity, roller clearance should be 3 mm or less with a TLC of 19 mm.  相似文献   

16.
为明确燕麦干草与青贮玉米不同组合对绵羊生产性能和消化代谢的影响,选用9只体重和体况相似并已安装永久性瘤胃瘘管的杂种(美利奴♂×蒙古羊♀)公羊为试验动物,按燕麦干草占粗饲料百分比配制3组饲粮,A1组(100%青贮玉米),A2组(50%青贮玉米+50%燕麦干草)和A3组(100%燕麦干草)。试验采用3×3拉丁方设计,饲粮精粗比为35∶65,研究不同燕麦干草和青贮玉米组合对饲料转化率、消化代谢、表观消化率及氮存留率的影响。结果表明:(1)饲粮中添加燕麦干草对绵羊干物质采食量无显著影响(P0.05),但添加燕麦干草后绵羊日增重显著提高(P0.05),绵羊采食添加50%燕麦干草的饲粮其饲料转化率得到显著提高(P0.05);(2)饲粮中添加燕麦干草对绵羊消化代谢影响显著,添加50%燕麦干草后绵羊的DM、OM、NDF、ADF和N的表观消化率以及N存留率均显著提高(P0.05),添加100%燕麦干草组与100%青贮玉米组各指标之间差异不显著(P0.05)。3个处理组中,以A2组效果最佳,显著提高了绵羊的生产性能,改善了其消化代谢。  相似文献   

17.
We evaluated the effects of replacement of heading stage harvested timothy silage with early‐harvested orchardgrass–perennial ryegrass mixed (OP) silage while maintaining or reducing concentrate input on dry matter intake (DMI), milk production, nutrient digestibility, and N balance in dairy cows. Nine multiparous Holstein cows were used in a replicated 3 × 3 Latin square design with three dietary treatments: TYL, a diet containing timothy silage where forage‐to‐concentrate ratio (FC) was 50:50; OPL, a diet containing OP silage where FC ratio was 50:50; and OPH, a diet containing OP silage where FC ratio was 60:40. We observed that an equal replacement of timothy with OP silage increased DMI, milk yield, milk protein production, and nutrient digestibility but decreased milk fat content (TYL versus OPL). We observed that replacing timothy with OP silage while reducing concentrate input increased milk fat and protein yield, nutrient digestibility, and feed efficiency and reduced urinary N loss with no effect on DMI or milk fat content (TYL versus OPH). These results show that replacing timothy with OP silage can be a good approach to improve milk production, feed efficiency, and N utilization and reduce concentrate input. However, milk fat depression should be considered when an equal substitution is performed.  相似文献   

18.
通过瘤胃尼龙袋消化试验 (试验 1)和生长性能试验 (试验 2 )评价大豆皮替代羔羊饲粮中玉米或纤维饲料(玉米秸 )对瘤胃消化和生长性能的影响。饲粮处理为大豆皮替代饲粮中全部玉米 (SH C)、饲粮中 5 0 %纤维饲料(SH F)和对照饲粮 (CK)。试验 1结果表明 ,以大豆皮替代羔羊饲粮中全部玉米对于 2 4h和 4 8h干物质消化率(DMD)没有显著影响 (P >0 .0 5 ) ,但极显著降低了 2 4h和 4 8h细胞壁消化率 (NDFD) (P <0 .0 1) ;以大豆皮替代饲粮中 5 0 %纤维饲料显著提高了羔羊饲粮 2 4h和 4 8hDMD(P <0 .0 1)以及 4 8hNDFD(P <0 .0 5 )。试验 2结果表明 ,与对照组相比 ,SH C处理不影响羔羊日粮干物质采食量 (P >0 .0 5 )、日增重 (P >0 .0 5 )和饲料转化效率 (P >0 .0 5 ) ,但可以降低单位增重的饲料成本 ;SH F处理可以显著提高羔羊日粮干物质采食量 (P <0 .0 5 )、增重速度 (P <0 .0 1)和饲料转化效率 (P <0 .0 5 )。  相似文献   

19.
本试验旨在用套算法和插值法测定与估测肉用绵羊花生秧有效能值,确定替代法中饲粮中适宜花生秧替代比例,为单一秸秆饲料有效能值的测定与估测提供方法学上的参考。选用体重为(45.00±1.96)kg的体况良好的杜泊×小尾寒羊F1肉用成年羯羊54只,采用随机区组设计,分为9组,饲粮分别为基础饲粮、全花生秧饲粮和分别以10%、20%、30%、40%、50%、60%、70%花生秧替代基础饲粮的试验饲粮,每组6个重复,每个重复1只羊。预试期10 d,正试期9 d,其中气体代谢试验3 d,消化代谢试验6 d。结果表明:1)全花生秧饲粮组花生秧干物质(DM)表观消化率与20%、30%、40%组间差异不显著(P0.05),显著高于其他各组(P0.05)。全花生秧饲粮组花生秧有机物(OM)表观消化率与20%组差异不显著(P0.05),但显著高于其他各组(P0.05)。全花生秧饲粮组花生秧总能(GE)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、粗脂肪(EE)表观消化率显著高于10%组(P0.05),粗蛋白质(CP)表观消化率显著低于10%组(P0.05),与其他各组间差异不显著(P0.05)。2)花生秧消化能(DE)、代谢能(ME)均具有相同的规律,即全花生秧饲粮组DE、ME(8.57、6.69 MJ/kg DM)与20%(8.22、6.58 M J/kg DM)、30%(8.02、6.50 M J/kg DM)、40%组(8.10、6.52 M J/kg DM)差异不显著(P0.05),但显著高于其他组(P0.05)。3)插值法求得花生秧M E"真值"为6.62 M J/kg DM,接近于套算法得到的花生秧ME。综合得出,套算法可以用于肉用绵羊估测花生秧(单一粗饲料)的DE和M E;用套算法测定花生秧秸秆类粗饲料有效能值,其在饲粮中的适宜替代比例为20%~40%。  相似文献   

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