冷季蒙古系绵羊羔羊育肥效果研究

进行了冷季羔羊育肥效果的研究。选用蒙古系绵羊羔羊60只,随机分为3组,试验1组只均饲喂配合饲料1000 g/d,试验2组只均补饲整粒玉米Zea mays 300 g/d,3组(纯放牧组)不补饲。结果表明,试验1组比纯放牧组和试验2组日增重分别提高276.14g(P0.01)和129.36 g(P0.01),头均收入分别比纯放牧组和试验2组增加82.88元和24.24元。     

尿素糖蜜多营养舔砖补饲牦牛效果的研究

分别在天祝县和碌曲县选用９０头天祝白牦牛和６０头甘南牦牛进行了冷季放牧牦牛尿素糖蜜多营养舔砖的补饲试验，尿素糖蜜多营养舔砖含尿素１０％，糖蜜１０％，采食量为０．５ｋｇ／（ｄ·头）。经５个月补饲后，天祝白牦牛和甘南牦牛的活重损失分别减少８０．３％和４６．８％，产奶量分别提高２０％和１３．６％，怀孕率分别提高１７．４和２０．０个百分点，投入产出比分别达到１∶３．５０和１∶２．１１。处理组与对照组之间存在极显著差异（Ｐ＜０．０１），证明尿素糖蜜多营养舔砖是实施高寒牧区放牧牦牛冷季补饲的一条新的有效途径     

山羊尿素舔砖不同添加水平的效果试验

本试验选取21头10月龄、体重26kg左右的湘东黑山羊,随机分成3组,其中A组为对照组,饲喂基础日粮,B组和C组为试验组,分别在饲喂基础日粮的基础上,补饲尿素含量为7%和10%的尿素糖蜜舔砖,以研究尿素糖蜜舔砖对山羊增重效果的影响。结果表明:补饲尿素糖蜜舔砖后,湘东黑山羊营养状况大大改善,增重速度得到不同程度的提高。补饲舔砖的B、C试验组日增重分别为0.12kg和0.15kg,比对照组分别高50%和87.5%,试验C组比试验B组高2 5%,经方差分析差异及显著(P<0.01)。试验B、C组中每只羊比对照组分别多收入8.34元和17.13元。从而也得出10%尿素添加比7%尿素添加的舔砖补饲山羊的效果要好。     

山羊尿素舔砖不同添加水平的效果试验

本试验选取21头10月龄、体重26kg左右的湘东黑山羊,随机分成3组,其中A组为对照组,饲喂基础日粮,B组和C组为试验组,分别在饲喂基础日粮的基础上,补饲尿素含量为7%和10%的尿素糖蜜舔砖,以研究尿素糖蜜舔砖对山羊增重效果的影响.结果表明:补饲尿素糖蜜舔砖后,湘东黑山羊营养状况大大改善,增重速度得到不同程度的提高.补饲舔砖的B、C试验组日增重分别为0.12kg和0.15kg,比对照组分别高50%和87.5%,试验C组比试验B组高2 5%,经方差分析差异及显著(P<0.01).试验B、C组中每只羊比对照组分别多收入8.34元和17.13元.从而也得出10%尿素添加比7%尿素添加的舔砖补饲山羊的效果要好.     

冷季补饲对藏羊消化道消化酶活性及表观消化率的影响

本试验旨在研究冷季补饲尿素-糖蜜型舔砖或精料2种营养补充方式对藏羊生长性能、消化道消化酶活性及表观消化率的影响。选择1.5岁藏系绵羊母羊18只,随机分为3组,每组6只羊。其中对照(CON)组自由采食燕麦干草,尿素-糖蜜型舔砖补饲(BS)组在CON组基础上自由舔食尿素-糖蜜型舔砖,精料补饲(CS)组在CON组基础上补饲精料200 g/(只·d)。60 d饲养试验结束后,进行4 d消化试验,最后进行屠宰试验。结果表明:1)消化能和粗蛋白质平均日采食量CS组和BS组分别比CON组多29.68%、40.00%和11.37%、20.00%(P0.05);2)CS组和BS组平均日增重(ADG)分别是CON组的3.22和1.98倍(P0.05);3)与CON组相比,补饲显著提高了血清葡萄糖(GLU)、总胆固醇(CHO)、甘油三酯(TG)、总蛋白(TP)、球蛋白(GLB)和白蛋白(ALB)浓度(P0.05);4)与CON组相比,补饲显著提高了干物质(DM)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)表观消化率(P0.05),且CS组高于BS组(P0.05);5)与CON组相比,补饲精料和尿素-糖蜜型舔砖均显著提高了瘤胃液中木聚糖酶、蛋白水解酶和氨基肽酶活性(P0.05),且CS组显著高于BS组(P0.05),补饲精料还显著提高了小肠各段黏膜中α淀粉酶、胰蛋白酶活性(P0.05)。结果提示,在冷季通过补饲尿素-糖蜜型舔砖或精料,均可显著增加藏羊对能量、蛋白质及微量元素的采食量,显著增加消化道消化酶活性,从而提高营养物质表观消化率和藏羊的生长性能;在本试验条件下,冷季对能量和蛋白质的补充摄入水平越高,藏羊的日增重越高。     

不同尿素水平的糖蜜舔砖对黑山羊增重的影响

选用生长发育良好、健康无病的湘东黑山羊21只,随机分成3组,其中A组为对照组,饲喂基础日粮;B组和C组是试验组,分别在饲喂基础日粮的基础上,补饲尿素含量为7%和10%的尿素糖蜜舔砖,做尿素糖蜜舔砖对山羊增重效果的试验。结果表明,在为期1个月的试验中,补饲舔砖对山羊增重效果显著(P<0.05),试验B、C组分别每只羊比A组平均多增重1.2和2.1kg,净收益高8.34和17.13元。此外,补饲尿素糖蜜舔砖的羊只较对照组被毛光泽、食欲旺盛、精神好和异嗜现象明显减少。     

复合营养舔砖对山羊的应用效果

选用24只武雪山羊,随机分成3组,在放牧条件下,一组补饲精饲料,一组补饲复合营养舔砖,另一组为对照组,进行为期33天的对比试验,试验结果表明:舔砖组山羊平均日增重达91.67g,分别比精料组和对照组的68.18g、65.53g提高了34.45%(P<0.05)和39.89%(P<0.05).舔砖组比精料组和对照组平均每只山羊每日净增纯利0.18元和0.16元.表明复合营养舔砖在山羊生产中颇具推广价值.     

不同补饲方式对云南半细毛羊育肥效果的影响

将60只、117日龄云南48－50支半细毛羊公羔公成3组；在人工草地上实行昼夜放牧，分别补饲食盐、混合料、糖蜜尿素舔砖，研究不同补饲方式对半细毛羊育肥效果的影响。结果：育肥公羔6月龄日增重分别为147．208、188g，胴体重分别为17．8、19．9、18．8kg，屠宰率分别为48．1％、50．2％、49．1％；到8月龄时，日增重分别为42、95、37g，胴体重分别为17．7、21．7、19．3kg，屠宰率分别为48．6％、50．2％、49．6％。在本试验条件下，昼夜放牧加补加饲糖蜜尿素舔砖育肥、半细毛羊公羔体重达40kg，出栏较好。6月龄时半细毛羊只均净收入比补饲食盐、混合精料分别多收入5．29元、32．99元。     

补饲糖蜜尿素舔砖对水牛增重性能的影响

在冬春季节 ,饲养状况差的情况下 ,利用 14头育成水牛进行了为期 6 0天的补饲糖蜜尿素舔砖对比饲养试验。结果表明 :补饲舔砖的水牛平均日增重为 30 8± 5 6g ,比对照组 113± 6 3g的日增重提高 195g,差异显著 (P <0 .0 1) ;试验组干物质采食量比对照组提高 13 6 % ;试验期间补饲舔砖的试验组平均每头水牛比对照组增加毛利收入 2 1 6元 ,日头均增加毛利收入 0 36元。说明补饲糖蜜尿素舔砖能明显提高水牛的增重性能 ,经济效益显著     

补饲舔砖对甘肃高山细毛羊生产性能的影响

在甘肃肃南典型家庭牧场,随机选择体况相近的甘肃高山细毛羊2周岁后备母羊、怀孕母羊各60只,各分两组进行试验。试验羊随大群自由放牧,归牧后对试验羊分圈饲养,试验组自由舔食舔砖,对照组无舔砖,试验期为165d。结果表明,补饲舔砖后备母羊平均舔食量31.1g·d-1,摄入糖蜜2.5g·d-1,怀孕母羊组舔食量为43.2g·d-1,摄入糖蜜3.5g·d-1;各组矿物质元素摄入量满足营养需要量,蛋氨酸和赖氨酸亦有一定程度的补充;补饲舔砖后备母羊平均日增重40d,与对照差异显著(P0.05);补饲怀孕母羊组羔羊初生重显著高于对照,断奶成活率亦有提高的趋势。     

Biohydrogenation of unsaturated fatty acids in continuous culture fermenters during digestion of orchardgrass or red clover with three levels of ground corn supplementation

Diet digestibility and outputs of biohydrogenation intermediates were assessed in a continuous culture of ruminal microorganisms. Orchardgrass or red clover harvested and frozen during spring or fall served as the primary substrates for fermentation. During 10-d incubations, fermenters were fed thawed forage (50 g of DM/d), forage (42 g/d) plus 8 g/d of corn, or forage (34 g/d) plus 16 g/d of corn. Effluents from the last 3 d of incubation were composited for analyses. Starch input increased from 5 to 27% of DM as corn input increased from 0 to 16 g/d. Corn input reduced (P < 0.01) pH, increased (P < 0.01) microbial DM yield, and increased (P = 0.01) digestibility of DM, NDF, CP, and nonstructural carbohydrates. Overall, apparent hydrogenation (percentage) of cis9-18:1, 18:2n-6, and 18:3n-3 was greater (P < 0.05) with orchardgrass than clover. Hydrogenation of cis9-18:1 and 18:2n-6 increased (P = 0.01), but hydrogenation of 18:3n-3 decreased (P = 0.01) linearly due to corn input, regardless of forage. As a result, output of trans11, cis15-18:2 also decreased (P = 0.01). Average output of cis9,trans11-18:2 was greater (P = 0.01) for clover (1.3 mg/d) compared with orchardgrass (0.6 mg/d), but corn input with either forage increased (P = 0.01) cis9,trans11-18:2 output by 205%. Output of trans11-18:1 was greater (P = 0.01) from orchardgrass compared with clover (174 vs. 90 mg/d), but corn increased (P = 0.01) trans11-18:1 output only from clover fermentations. Output of trans10-18:1 was greater (P = 0.01) in response to orchardgrass compared with clover (10 vs. 4 mg/d), but corn addition doubled the output regardless of forage type. Output of trans10,cis12-18:2, which did not differ due to forage type, increased (P = 0.01) twofold in response to corn. Cis9,cis11-18:2 was a primary conjugated isomer produced from forage fermentations, but its output decreased (P = 0.03) in response to corn input. When inputs of 18:2n-6 plus 18:3n-3 were less than 0.9% of total DM (clover), hydrogenation was low (87%). When 18:2n-6 plus 18:3n-3 inputs were from 1.2 to 1.5% of total DM (orchardgrass), hydrogenation averaged 96%. Despite greater hydrogenation, incremental additions of cis9-18:1 and 18:2n-6 from corn grain increased (P < 0.05) outputs of trans10-18:1, trans11-18:1, trans10,cis12-18:2, cis9,trans11-18:2, and trans,trans-18:2 in effluent. Results suggest that forage species alone or in combination with corn grain can alter hydrogenation and profiles of intermediates to varying degrees.     

EM发酵玉米秸秆饲喂陕北白绒山羊效果研究

为研究EM发酵玉米秸秆饲喂陕北白绒山羊效果,试验选择16只健康状况良好的1周岁空怀期陕北白绒山羊,将其随机分成A、B两组,每组8个重复,每个重复1只。试验基础日粮为苜蓿干草200g＋精料补充料200g。A组饲喂基础日粮＋常规玉米秸秆;B组饲喂基础日粮＋EM发酵玉米秸秆,试验中A、B两组自由采食秸秆。试验共40d,其中预饲期18d10结果显示：（1）B组平均干物质采食量显著高于A组（P〈0.05）,其中玉米秸秆采食量较A组高22.53%（P〈0.05）;（2）B组DMD、GED和CPD分别较A组高3.65%（P〈0.05）、4.18%（P〈0.05）和8.02%（P〈0.01）;（3）B组平均日增重和饲料转化效率分别为45.45g和74.19g/kg,极显著高于A组的22.27g和39.32g/kg（P〈0.01）。综上所述,EM发酵的玉米秸秆可以达到开发秸秆粗饲料、减少资源浪费、减少公害、降低生产成本的目的。     

日粮中添加青贮饲料对东宝黑头羊增重、屠宰性能及经济效益的影响

为研究全株玉米青贮、全株玉米和饲料桑混合青贮对东宝黑头羊增重、屠宰性能以及育肥效益的影响,选取45只10月龄,体重(30.3±1.3)kg的东宝黑头羊,按照饲喂日粮的种类随机分为3组:对照组(玉米秸秆青贮+精料),试验Ⅰ组(全株玉米青贮+精料),试验Ⅱ组(全株玉米和饲料桑混合青贮+精料),预试验7 d,正式试验期90 d。结果显示:试验Ⅰ、Ⅱ组末重、平均日干物质采食量显著高于对照组(P<0.05);试验Ⅰ、Ⅱ组平均日增重极显著高于对照组(P<0.01);试验Ⅰ、Ⅱ组料重比显著低于对照组(P<0.05),而试验Ⅱ组显著低于Ⅰ组(P<0.05);试验Ⅰ、Ⅱ组胴体重、屠宰率显著高于对照组(P<0.05),而试验Ⅰ、Ⅱ组间无显著差异(P>0.05);试验Ⅱ组眼肌面积显著高于Ⅰ组和对照组(P<0.05),而Ⅰ组和对照组无显著差异(P>0.05);除试验Ⅰ、Ⅱ组瘤胃重量显著高于对照组(P<0.05),各组间器官重量差异均不显著(P>0.05);试验Ⅰ、Ⅱ组和对照组均盈利,按活羊出售分析,试验Ⅱ组净收益最高,按屠宰出售分析,试验Ⅰ组净收益最高。提示:日粮中添加全株玉米青贮、全株玉米和饲料桑青贮,可提高肉羊的增重性能和屠宰性能。     

日粮中添加青贮饲料对东宝黑头羊增重、屠宰性能及经济效益的影响

为研究全株玉米青贮、全株玉米和饲料桑混合青贮对东宝黑头羊增重、屠宰性能以及育肥效益的影响,选取45只10月龄,体重(30.3±1.3)kg的东宝黑头羊,按照饲喂日粮的种类随机分为3组:对照组(玉米秸秆青贮+精料),试验Ⅰ组(全株玉米青贮+精料),试验Ⅱ组(全株玉米和饲料桑混合青贮+精料),预试验7 d,正式试验期90 d。结果显示:试验Ⅰ、Ⅱ组末重、平均日干物质采食量显著高于对照组(P<0.05);试验Ⅰ、Ⅱ组平均日增重极显著高于对照组(P<0.01);试验Ⅰ、Ⅱ组料重比显著低于对照组(P<0.05),而试验Ⅱ组显著低于Ⅰ组(P<0.05);试验Ⅰ、Ⅱ组胴体重、屠宰率显著高于对照组(P<0.05),而试验Ⅰ、Ⅱ组间无显著差异(P>0.05);试验Ⅱ组眼肌面积显著高于Ⅰ组和对照组(P<0.05),而Ⅰ组和对照组无显著差异(P>0.05);除试验Ⅰ、Ⅱ组瘤胃重量显著高于对照组(P<0.05),各组间器官重量差异均不显著(P>0.05);试验Ⅰ、Ⅱ组和对照组均盈利,按活羊出售分析,试验Ⅱ组净收益最高,按屠宰出售分析,试验Ⅰ组净收益最高。提示:日粮中添加全株玉米青贮、全株玉米和饲料桑青贮,可提高肉羊的增重性能和屠宰性能。     

不同粗饲料组合效应对育肥公羊生产性能及经济效益的影响

为研究不同粗饲料组合效应对育肥公羊采食量、日增重、料肉比及经济效益的影响,试验采用单因素完全随机试验设计,将体重相近的40只小尾寒羊后备种公羊随机分为8组,每组5只。基于等能等氮原则配制日增重350 g试验饲粮,其中A组日粮中粗饲料添加苜蓿,B组添加玉米秸秆,C组添加棉花秸秆,D组添加苜蓿和棉花秸秆,E组添加苜蓿和玉米秸秆,F、G、H组添加不同比例苜蓿、棉花秸秆和玉米秸秆。试验期40 d,其中预试期10 d,正式试验期30 d。结果表明:(1)G组干物质采食量极显著高于C组和D组(P<0.01),显著高于F组(P<0.05);A、B、E、H组干物质采食量极显著高于C组和D组(P<0.01);F组干物质采食量显著高于C组(P<0.05)。(2)A组日增重极显著高于C组(P<0.01),显著高于D组(P<0.05);G组日增重显著高于C组和D组(P<0.05)。(3)A组饲粮单价最高,C组单价最低,饲料单价如下趋势:A组>E组>G组>H组>F组>D组>B组>C组,饲料总成本趋势与饲料单价趋势基本相同。(4)增重收益中A组最高,C组最低,前者比后者高35.76%;经济效益G组最高,D组最低,前者比后者高34.46%。综上,在本试验条件下,以苜蓿:玉米秸秆:棉杆为12:24:13调配日粮时,经济效益最优,为265.43元/只。     

Feed intake, digestion and digesta characteristics of cattle fed Bermudagrass or orchardgrass alone or with ground barley or corn

Feed intake, digestion and digesta characteristics of cattle fed bermudagrass (BG) or orchardgrass (OG) alone or with supplemental ground corn or barley were determined in two 6 x 6 latin squares with 2 x 3 factorial treatment arrangements. In Exp. 1, beef cows (Hereford, Angus and Hereford-Angus; 452 kg) cannulated in the rumen and duodenum were fed BG (7.9% CP, 79% NDF and 8.7% ADL) or OG (9.8% CP, 79% NDF and 7.2% ADL) hays at 1.2% of BW per day either alone or with added ground barley (.64% BW) or ground corn (.60% BW daily). The increase in microbial OM flow with corn was greater for OG than for BG; corn elevated microbial OM flow more than did barley with OG but less than with BG (forage type x grain source interaction; P less than .10). The increase in total tract OM digestion with grain was greater for BG than for OG (supplementation effect and forage type x supplementation interaction; P less than 05). In Exp. 2, Holstein steers (228 kg) were fed BG and OG hays ad libitum either alone or with addition of either 1.07% of BW per day of barley or 1.00% BW of corn. Total DM intake was 2.19, 3.03 and 2.82% BW for BG and 2.14, 2.80 and 2.52% BW for OG alone or with barley or corn supplements, respectively, being affected by forage type, grain supplementation, grain type and a forage type x grain supplementation interaction (P less than .05). Organic matter digested daily (g/d) was higher for OG than for BG, higher with than without grain and higher for barley than for corn (P less than .05).     

饲粮n-6/n-3多不饱和脂肪酸比值对冬毛期北极狐生长性能及肝脏脂肪酸代谢相关蛋白基因表达的影响

本试验旨在研究饲粮n-6/n-3多不饱和脂肪酸(PUFA)比值对冬毛期北极狐生长性能、肝脏脂肪酸组成及肝脏型脂肪酸结合蛋白(L-FABP)和脂肪酸转运蛋白(FATP)基因表达的影响。试验选取48只157日龄、平均体重为(5 658±47)g的健康雄性北极狐,随机分成4组,每组12个重复,每个重复1只。Ⅰ组饲粮中添加12.00%鱼油和2.00%豆油,n-6/n-3 PUFA比值为3.00;Ⅱ组饲粮中添加9.38%玉米油和4.62%豆油,n-6/n-3 PUFA比值为18.03;Ⅲ组饲粮中添加12.00%玉米油和2.00%豆油,n-6/n-3 PUFA比值为40.83;Ⅳ组饲粮中添加1.50%鱼油和12.50%玉米油,n-6/n-3 PUFA比值为136.36。各组饲粮除油脂组成和配比不同外,其他原料一致。预试期7 d,正试期40 d。结果表明:1)饲粮n-6/n-3 PUFA比值对冬毛期北极狐的平均日增重(ADG)、平均日采食量(ADFI)和料重比(F/G)有极显著影响(P0.01)。Ⅰ和Ⅳ组的ADG极显著高于Ⅱ和Ⅲ组(P0.01),Ⅰ、Ⅱ和Ⅳ组的ADFI极显著高于Ⅲ组(P0.01),Ⅳ组的F/G极显著低于Ⅱ和Ⅲ组(P0.01)。2)饲粮n-6/n-3 PUFA比值对冬毛期北极狐肝脏单不饱和脂肪酸(MUFA)、PUFA、n-3 PUFA和n-6 PUFA的含量有显著或极显著影响(P0.05或P0.01),对肝脏饱和脂肪酸(SFA)含量无显著影响(P0.05)。Ⅰ和Ⅳ组肝脏n-3 PUFA含量极显著高于Ⅱ和Ⅲ组(P0.01),Ⅱ和Ⅲ组肝脏n-6 PUFA含量极显著高于Ⅰ和Ⅳ组(P0.01)。3)饲粮n-6/n-3 PUFA比值对冬毛期北极狐肝脏L-FABP mRNA相对表达量无显著影响(P0.05),但极显著影响肝脏FATP mRNA相对表达量(P0.01)。Ⅰ和Ⅳ组肝脏FATP mRNA相对表达量极显著高于Ⅱ和Ⅲ组(P0.01)。由此可见,饲粮添加1.50%鱼油与12.50%玉米油的混合油脂,即饲粮n-6/n-3 PUFA比值为136.36时,上调了肝脏中FATP基因的表达,增加了肝脏长链脂肪酸的转运及利用效率,促进了冬毛期北极狐的生长。     

苜蓿黄酮对体外培养的奶牛乳腺上皮细胞增殖与抗氧化的影响

本试验旨在研究不同浓度苜蓿黄酮对体外培养奶牛乳腺上皮细胞增殖与抗氧化的影响。试验利用含不同浓度0 μg/mL(对照组)、25 μg/mL(试验Ⅰ)、50 μg/mL(试验Ⅱ)、75 μg/mL(试验Ⅲ)、100 μg/mL(试验Ⅳ)苜蓿黄酮的培养基进行细胞培养。结果表明,1)细胞培养第3天,各组细胞增殖无显著差异,但第5天试验Ⅱ~Ⅳ组细胞增殖能力极显著高于对照组和试验I组(P<0.01)。2)试验Ⅱ~Ⅳ组一氧化氮(NO)水平明显高于对照组与试验Ⅰ组,且差异极显著(P<0.01)。试验Ⅰ组、Ⅱ组、Ⅳ组的乳酸脱氢酶(LDH)活性显著低于对照组与试验Ⅲ组,且差异极显著(P<0.01),但对照组与试验Ⅲ组差异不显著。3)试验Ⅳ组细胞内过氧化氢酶(CAT)含量极显著高于其他各组(P<0.01),而试验Ⅲ组丙二醛(MDA)含量极显著低于其他各组(P<0.01);试验Ⅱ和Ⅲ组的谷胱甘肽过氧化物酶(GSH-PX)活性极显著高于其他各组(P<0.01),而各处理组细胞的超氧化物歧化酶(SOD)含量差异不显著。4)试验Ⅱ和Ⅲ组细胞p53、Caspase-3、SOCS3和STAT1基因的相对表达量极显著低于对照组(P<0.01)。因此,苜蓿黄酮能够促进体外培养奶牛乳腺上皮细胞的增殖,提高细胞抗氧化的能力,抑制细胞凋亡,其中添加浓度为75 μg/mL组效果最好。     

Dietary composition affects odour emissions from meat chickens

Abatement of odour emissions has become an important consideration to agricultural industries,including poultry production. The link between diet and odour emissions was studied in two experiments using Ross 308 male meat chickens reared in specially designed chambers in a climate controlled room. In the first experiment, two treatments were compared using three replicates of two birds per chamber. Two wheat-soy based treatment diets were formulated with or without canola seed, an ingredient rich in sulfur amino acids, Treatment 1(T1) had 13,39 MJ/kg ME(as fed) and used 60 g/kg canola seed without corn while Treatment 2(T2) contained 12.90 MJ/kg ME(as fed) and used 150 g/kg corn without canola seed. In the second experiment, birds were assigned to three dietary treatments of five replicates with five birds per replicate(chamber). The basal starter, grower and finisher diets in the control group(SBM group) contained soybean meal in the range of 227-291 g/kg(as fed) as the main protein source. The other treatments(CM and MBM groups) contained either high levels of canola meal(174-190 g/kg) or meat meal(74-110 g/kg) at the expense of soybean meal. In both experiments, diets were isocaloric, isonitrogenous and contained similar digestible amino acid contents as per 2007 Aviagen Ross 308 guidelines. Emissions of odour were measured using Fourier transform infrared(FTIR) spectroscopy. In both experiments, major odorous compounds detected included 2,3-butanedione(diacetyl),2-butanone, dimethyl disulfide, methyl mercaptan, ethyl mercaptan, 2-butanol, 3-methyl-butanal,phenol and m-cresol. In the first experiment, Tl(with canola seed) produced higher concentration of methyl mercaptan(P 0.05) and lower diacetyl(P 0.01) than T2. In the second experiment, methyl mercaptan emission was higher in SBM group(P = 0.01) and total elemental sulfur were higher in SBM and CM groups up to day 24(P 0.01). Results of these experiments indicated a direct link between diet and odour emissions from meat chickens.