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1.
油橄榄饼饲喂肉仔鸡效果的研究 总被引：1，自引：0，他引：1
本试验选用300只1日龄AA肉仔鸡分对照、5％油橄榄饼组、10％油橄榄饼组，每组100只鸡。以检测油橄榄饼在等蛋白质等能量基础上替代日粮中部分玉米对肉仔鸡生产性能的影响。结果表明：从各生长阶段和全期来看，日增重和饲料增重比3个试验组之间差异不显著（P＞O.05），但10％油橄榄饼组的采食量显著增加（P＜0.05）。随着油橄榄饼添加量的增加，胸肌的干物质、粗脂肪和粗蛋白质克数线性降低。用5％、10％油橄榄饼替代肉仔鸡料中的玉米后，肉仔鸡的生产性能未受影响，且经济效益有所提高。 相似文献
2.
本试验旨在研究饲粮添加低聚木糖水平对1~21日龄和22~42日龄爱拔益加(AA)肉仔鸡生长性能、血液生理和血浆生化指标、器官发育和组织病理学变化的影响,从而评价低聚木糖对肉仔鸡饲用的生物安全性。试验采用单因子完全随机设计。选用240只1日龄AA肉仔鸡,随机分为4个组(每个组6个重复,每个重复10只鸡,公、母各5只),分别饲喂低聚木糖添加量为0、160、800和1 600 mg/kg的试验饲粮。试验期为42 d。结果表明,饲粮添加1 600 mg/kg低聚木糖显著提高21日龄肉仔鸡血浆球蛋白浓度和42日龄肉仔鸡血浆葡萄糖浓度(P0.05),显著降低21日龄肉仔鸡血浆磷酸肌酸激酶和谷丙转氨酶活性以及42日龄肉仔鸡血浆甘油三酯浓度(P0.05);800 mg/kg添加组42日龄肉仔鸡肾脏相对重量显著高于对照组和1 600 mg/kg添加组(P0.05)。以上结果表明,肉仔鸡玉米-豆粕型饲粮中低聚木糖的最高添加限量定为160 mg/kg,具有10倍的安全系数,对肉仔鸡饲用是安全的。 相似文献
3.
益微制剂对肉仔鸡生长和某些生理指标影响的研究 总被引：3，自引：0，他引：3
用加有0.2％益微制剂(以一种蜡质芽孢杆菌为主的复合微生态制剂)的日粮饲喂肉仔鸡,分3组处理(对照、0～28天和0～49天加益微),定期称体重和取血,观察对鸡生长和部分生理、生化指标的影响。初步获得以下结果:添加益微的两组鸡增重较好,而两组间差异不明显;全部鸡红细胞比容和数量、血红蛋白及血浆蛋白等值均在正常范围,无组间差异:饲喂益微的鸡血浆β-脂蛋白显著升高,7周龄血中葡萄糖明显高于对照鸡;并且血浆T_4含量显著升高,T_3/T_4比值下降;7周龄胰岛素水平比对照鸡略低;饲喂益微的鸡的血浆IgG含量显著高于对照鸡。而盲肠内容物沙门氏杆菌阳性检出率显著低于对照鸡。 相似文献
4.
本试验旨在研究饲粮中添加不同水平吡咯喹啉醌二钠(PQQ·Na_2)对爱拔益加(AA)肉仔鸡生长性能、血液生理和血浆生化指标、器官发育和组织学结构的影响,从而评价PQQ·Na_2对肉仔鸡的生物安全性。试验采用单因子完全随机设计,选用240只1日龄AA肉仔鸡,随机分为4个组,每个组6个重复,每个重复10只鸡(公、母各5只)。各组分别饲喂PQQ·Na_2添加水平为0、0.3、1.5和3.0 mg/kg的试验饲粮。试验期为49 d。结果表明:饲粮PQQ·Na_2添加水平对21和49日龄肉仔鸡生长性能、血液生理和血浆生化指标及49日龄脏器指数均无显著影响(P>0.05),且并未引起主要器官的组织学结构变化。因此,肉仔鸡玉米-豆粕型饲粮中PQQ·Na_2的最高有效添加水平为0.3 mg/kg时,具有10倍的安全系数,对肉仔鸡饲喂是安全的。 相似文献
5.
本试验旨在研究饲粮中添加不同水平吡咯喹啉醌二钠(PQQ·Na_2)对爱拔益加(AA)肉仔鸡生长性能、血液生理和血浆生化指标、器官发育和组织学结构的影响,从而评价PQQ·Na_2对肉仔鸡的生物安全性。试验采用单因子完全随机设计,选用240只1日龄AA肉仔鸡,随机分为4个组,每个组6个重复,每个重复10只鸡(公、母各5只)。各组分别饲喂PQQ·Na_2添加水平为0、0.3、1.5和3.0 mg/kg的试验饲粮。试验期为49 d。结果表明:饲粮PQQ·Na_2添加水平对21和49日龄肉仔鸡生长性能、血液生理和血浆生化指标及49日龄脏器指数均无显著影响(P0.05),且并未引起主要器官的组织学结构变化。因此,肉仔鸡玉米-豆粕型饲粮中PQQ·Na_2的最高有效添加水平为0.3 mg/kg时,具有10倍的安全系数,对肉仔鸡饲喂是安全的。 相似文献
6.
用明星肉仔鸡420只研究了脱毒菜籽饼-玉米型饲粮的应用问题。试验设置8种饲粮,高能和低能各4种,脱毒菜籽饼代替豆饼的比例为:0,20,50,75和100%。试验结果表明:(1)脱毒菜籽饼对肉用仔鸡无毒害作用,适口性好,在保持饲粮营养水平一致时,能以任何比例替代饲粮中的豆饼,(2)肉仔鸡饲粮中赖氨酸:精氨酸的比值对饲粮的利用率有较大的影响,脱毒菜籽饼-玉米型肉仔鸡饲粮尤应重视精氨酸的不足;(3)在低能无鱼粉饲粮中,脱毒菜籽饼与豆饼配伍,可以取得较好的效果。 相似文献
7.
试验旨在研究转植酸酶基因玉米饲粮对肉仔鸡器官发育及其病理变化的影响。试验采用单因子完全随机设计,将160只1日龄AA肉仔公鸡分成2个处理组,每个处理10个重复笼,每个重复笼8只鸡。对照组鸡饲喂非转植酸酶基因的亲本玉米饲粮,试验组鸡饲喂转植酸酶基因玉米饲粮。2个处理组饲粮中可利用磷等所有养分含量均相等或相近。试验期42 d。结果表明:试验组与对照组肉仔鸡内脏器官指数、小肠各段长度和重量指数及十二指肠绒毛高度、隐窝深度均无显著差异(P>0.05),试验组肉仔鸡的肝脏、肾脏、脾脏和十二指肠也未发现病理变化。以上结果表明,在本试验期内,转植酸酶基因玉米饲粮对肉仔鸡的器官发育未产生不良影响,主要脏器未发现病理变化。 相似文献
8.
滇池凤眼莲饲喂肉仔鸡试验的研究 总被引：5，自引：0，他引：5
在肉仔鸡玉米－豆粕－鱼粉型饲粮中添加３％、５％、７％凤眼莲干粉替代部分饼粕和麸皮,用艾维茵肉仔鸡经过４０ｄ饲喂试验,结果平均每只增重,对照组２．０ｋｇ,３％凤眼莲组１．９９３ｋｇ,５％凤眼莲组１．９３４ｋｇ,７％凤眼莲组１．９０２ｋｇ,各组间增重差异不显著（Ｐ＞０．０５）。研究结果表明,在肉仔鸡饲粮中添加７％以内的凤眼莲是安全可行的。 相似文献
9.
本试验旨在研究玉米型饲粮和小麦型饲粮对肉仔鸡生长性能、肉品质、血浆生化指标和脂质代谢的影响。选取健康的1日龄爱拔益加肉仔鸡公雏180只,随机分成2个组,分别采食玉米型饲粮和小麦型饲粮,每组6个重复,每个重复15只鸡。试验期42 d。结果表明:与玉米型饲粮相比,饲喂小麦型饲粮的肉仔鸡,1)生长前期(1~21日龄)和全期(1~42日龄)平均日增重(ADG)显著增加(P0.05),生长前期死亡率显著降低(P0.05);2)42日龄的腹脂率显著降低(P0.05);3)42日龄胸肌肌肉的红度(a*)45 m in和a*24 h值显著降低(P0.05),亮度(L*)45 m in值增加(P=0.096);4)21和42日龄血浆总胆红素含量显著降低(P0.05);21日龄血浆总蛋白和白蛋白含量显著增加(P0.05),21日龄血浆谷氨酸氨基转移酶活性显著降低(P0.05);42日龄血浆尿酸含量显著增加(P0.05);5)21和42日龄血浆甘油三酯含量显著降低(P0.05);42日龄血浆总胆固醇含量显著降低(P0.05)。由此可见,本试验条件下,与玉米型饲粮相比,小麦型饲粮改善了肉仔鸡的生长性能、脂质代谢和健康状态,降低了腹脂率。 相似文献
10.
试验以不同品质稻谷替代40%玉米饲喂肉仔鸡,探讨对其生长情况、内脏器官及血液指标的影响。将200只1日龄AA肉仔鸡随机分成4组,每组50只,公母各半,采用单因素有重复试验设计,对照组饲喂玉米-豆粕型基础日粮,Ⅰ、Ⅱ、Ⅲ组分别用普通稻谷、新高赖氨酸转基因稻谷组、陈高赖氨酸转基因稻谷组替代40%玉米配制日粮。试验分2个阶段,前期1～21日龄,后期22～42日龄。试验结果表明:①3种品质稻谷替代40%玉米对肉仔鸡前期促生长作用明显,其中新、陈高赖氨酸含量转基因稻谷组料肉比均比对照组显著降低(P<0.05);后期普通稻谷组料肉比最低,新高赖氨酸含量转基因稻谷组肉仔鸡平均体重最高。②3种品质稻谷能促进前期肉仔鸡肝脏生长,其中高赖氨酸转基因稻谷组提高最为显著(P<0.05);后期肾脏指数3个稻谷组均比对照组显著提高(P<0.05)。③3种品质稻谷对早期血液生化指标存在一定影响;后期葡萄糖浓度3个稻谷组均比对照组显著提高(P<0.05),其它各项指标差异不显著。3种品质稻谷替代40%玉米配制日粮饲喂肉仔鸡是可行的。 相似文献
11.
Y A Attia 《Archives of Animal Nutrition》2003,57(1):39-48
This experiment was conducted to study growth performance, carcass characteristics, meat quality and plasma constituents of Campbell drakes fed diets containing different levels of lysine with or without a microbial phytase. Basal vegetable duck all-mash diets were fed during the growing (1-35 d of age), and finishing period (36-56 d of age) and were formulated to contain 0.90% and 0.73% lysine (negative control), respectively. These diets were supplemented or not with L-lysine HCl, which resulted in a dietary lysine level of 0.90, 0.95, 1.01 and 1.06% and 0.73, 0.80, 0.87 and 0.94%, during the growing and finishing period, respectively. Furthermore, the diets were fed with or without 600 FTU phytase (Natuphos) except for those containing 1.06 and 0.94% lysine during the growing and finishing period, respectively (positive control). A lysine level of 1.01/0.87% in the growing/finishing diet significantly increased BWG and improved FCR of drakes by 2.1 and 1.8%, respectively. Phytase significantly increased BWG by 2.1% and 3.5% after feeding the basal diet and 1.01/0.87% lysine, respectively. Also, FCR was significantly improved by 2.2 and 1.8% of groups fed 0.95/0.80, and 1.01/0.87% lysine, respectively. Phytase as an independent variable increased BWG by 1.8, and improved FCR by 1.0%. Lysine and/or phytase did not affect carcass yield, and meat quality treats as well as plasma constituents of drakes. However, lysine level at 0.95/0.80% and 1.01/0.87% significantly decreased abdominal fat deposition compared to either the negative or the positive control. In conclusion, a lysine level of 1.01/0.87% in the growing/finishing diets for drakes is adequate. After phytase supplementation of the basal diet the BWG at a lysine level of 0.90/0.73% were similar to the positive control (1.06/0.94% lysine). However, the best FCR was obtained after feeding diets containing 1.01/0.87% lysine supplemented with phytase. 相似文献
12.
Sixteen groups, each of about 30 male or female Ross 1 chicks, were given pelleted diets containing 0, 5, 10 or 20% yeast in place of herring meal. The diets were given from 1 d of age for 4 weeks; from 4 to 8 weeks the birds were given a common broiler finisher diet. Replacing up to 10% herring meal by yeast did not significantly affect live‐weight at 4 weeks of age but food conversion efficiency was poorer with the diet containing 10% yeast. Birds given the diet containing 5% yeast to 4 weeks of age were significantly heavier at 8 weeks. The diet with 20% yeast significantly depressed growth at 4 and 8 weeks of age.
The use of yeast in broiler finisher diets was investigated in a second experiment. Birds similar to those used in the first experiment were given diets containing yeast at levels of 0, 5, 10 or 20% from 4 to 8 weeks of age. Live‐weight at 8 weeks was not significantly affected by level of yeast in the diet; food conversion efficiency was significantly better with the 20% yeast diet. Blood plasma uric acid levels were not affected by the level of yeast in the diet. 相似文献
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14.
采用单因素方差随机试验,选用14周龄育成柴鸡36只,随机的分成3个处理,每个处理3个重复,每个重复4只鸡,分别饲喂低能、对照、高能的日粮,试验期为28d。结果显示,育成柴鸡外周血浆FSH浓度,低能、对照与高能差异极限著（P〈0.01）,并且随着日龄增加FSH浓度逐渐增加。育成柴鸡外周血浆LH浓度第1周时低能组与对照、高能组差异极显著（P〈0.01）,对照与高能组差异不显著;第2、3周处理低能组、对照、高能组差异极显著（P〈0.01）,并且随着日龄增加浓度增加。育成柴鸡体外培养垂体细胞分泌FSH、LH高能组与低能、对照组差异极显著（P〈0.01）,而低能组与对照组差异不显著。结果表明,日粮能量通过下丘脑-垂体-性腺轴影响育成柴鸡生殖机能。 相似文献
15.
Khan SH Hasan S Sardar R Dil S 《Journal of animal physiology and animal nutrition》2011,95(4):523-532
A study was conducted to evaluate four different probiotic levels, using diets supplemented with 0 (control), 0.1%, 0.2%, 0.3% or 0.5% of organic-green culture-zs (probiotic). The cockerels of 6-weeks old were randomly divided into 15 separate floor pens each comprising 25 birds and three pens (replicates) per treatment group following completely randomized design. At 12 weeks of age BW and feed to gain ratio (FCR) were determined. At the end of 42 days of experiment, nine birds per treatment were sacrificed to evaluate carcass characteristics, abdominal fat contents and the internal organs. Blood haemato-biochemical parameters were also determined. Haemagglutination inhibition antibody titres against Newcastle disease virus and lymphoid organs weight/body weight ratio were also determined. The BW of birds fed 0.2-0.5% of probiotic was significantly greater than birds fed without probiotic diet. Similarly, better FCR was observed in birds those fed diets of high level of probiotic. There was no mortality recorded at higher levels of probiotics. Differences in carcass characteristics, organs weight, meat composition, haematological values and HDL and LDL concentrations among all the diets were non-significant. However, abdominal fat contents reduced significantly in supplemented groups in relation to control and cholesterol contents were reduced significantly in 0.3% or 0.5% supplemented groups in relation to control. Feeding levels of 0.2-0.5% of probiotic, did positively affect the immune system within the parameters measured. It may be concluded that performance, blood chemistry and immunity against disease in cockerels could be maintained when supplementing 0.3% or 0.5% level of probiotic incorporated in crossbred cockerel's diets. 相似文献
16.
试验旨在研究泌乳驴的日粮蛋白水平对驴驹生长发育的影响。选取健康、体况良好的5岁龄、胎次(1.9±0.4)胎、体重(240±30) kg、泌乳日期(29±5) d的带驹德州三粉驴24头,分为3个处理组(H、M、L组),饲喂蛋白水平分别为13.18%、12.22%和11.34%的日粮。每个处理组4个重复,每个重复2头驴。正式试验期8周,分为试验前期(1~4周)和试验后期(5~8周)。同时,将24头驴驹跟随母驴相应分为3个处理组,驴驹的公、母比例一致,日龄(29±5) d与体重(48±8) kg相近。所有驴驹除摄取母乳外,补饲数量相同的精补料与粗饲料。试验表明,试验前期泌乳驴的日粮蛋白水平对驴驹日增重无显著的影响(P>0.10);试验后期,随着泌乳驴日粮蛋白水平的增加,驴驹日增重显著增加(P<0.05),饲料转化效率呈一定增加趋势,但对体尺无显著影响(P>0.10)。饲喂泌乳驴高蛋白水平日粮对驴驹血浆中天冬氨酸(Asp)、苏氨酸(Thr)、丝氨酸(Ser)和组氨酸(His)的含量有明显的促进作用。提高泌乳驴的日粮CP水平,对驴驹日增重具有一定促进作用,以12.22%和13.18%的效果较好。 相似文献
17.
日粮添加谷氨酰胺对早期断奶仔猪抗氧化能力的影响 总被引：40，自引：1，他引：39
本试验选用大长北母猪产仔猪45头,21日龄断奶并宰杀5头公仔猪作为哺乳对照,其余40头随机分为试验组和对照组,每组20头公母各半。试验组日粮添加1.2％的谷氨酰胺,以研究添加GLN对早期断奶仔猪血浆GLN浓度以及血浆、肝脏、肠粘膜、肠系膜淋巴结和脾脏中GSH和SOD水平的影响。结果表明:试验组仔猪28日龄和35日龄血浆GLN水平极显著高于对照组（P<0.01）;试验组仔猪,血浆还原型谷胱甘肽水平35日龄和49日龄时高于对照组（P<0.01）;肝脏和肠系膜淋巴结中还原型谷胱甘肽35日龄时高于对照组（P<0.01,P<0.05）,49日龄时有增加但差异不显著;肠道和脾脏中还原型谷胱甘肽含量与对照组相比有增加,但差异不显著。添加谷氨酰胺后,仔猪35日龄时肝脏和49日龄脾脏中SOD均极显著低于未添加组（P<0.01）。由此可见,日粮中添加GLN可以缓解由于早期断奶引起的血浆GLN水平降低,并对维持体内还原型谷胱甘肽起重要作用。 相似文献
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植物蛋白小肽对哺乳仔猪血液生化指标和肠道微生物区系影响的研究 总被引：4，自引：1，他引：3
本文旨在研究植物蛋白小肽对哺乳仔猪血液生化指标和肠道微生物区系的影响。试验选用(7±2)日龄的PIC五元杂交系哺乳仔猪400头,随机分为Ⅰ、Ⅱ、Ⅲ、Ⅳ4个组,每组10个重复,每个重复10头猪。各组日粮为在玉米-豆粕型基础日粮的基础上分别添加2%鱼粉、2%血浆蛋白粉、2%植物蛋白小肽和4%植物蛋白小肽。试验自7日龄补饲开始至21日龄断奶结束。试验结束时,每组选取体格中等的3头仔猪,进行前腔静脉采血和屠宰试验。研究结果表明:(1)日粮中添加4%的植物蛋白小肽可以显著提高哺乳仔猪血糖浓度、血清总蛋白浓度(P<0.05),降低血清尿素氮的含量(P<0.05);(2)日粮中添加4%的植物蛋白小肽或2%的血浆蛋白粉可以显著提高血清中IgG的水平;(3)哺乳仔猪日粮中添加4%的植物蛋白小肽可以显著降低大肠杆菌和沙门氏菌的数量,同时显著提高盲肠中乳酸杆菌的数量(P<0.05)。 相似文献
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Ogunji JO Kloas W Wirth M Neumann N Pietsch C 《Journal of animal physiology and animal nutrition》2008,92(4):511-518
A 56-day feeding trial was conducted to access the effect of housefly maggot meal (magmeal) diets on the performance, concentration of plasma glucose, cortisol and blood characteristics of Oreochromis niloticus fingerlings. Seven feeds formulated to contain 36% protein and 20 kJ g−1 gross energy (dry matter basis), were prepared by replacing fish meal with magmeal. Fifteen fingerlings (initial average weight 2.0 ± 0.1 g) stocked per experimental tank were fed in triplicates at 5% body weight in two portions per day (a level previously established). Growth and food conversion ratio were adequate and comparable without any significant differences (p < 0.5) between feeding groups. Mean values for haematocrit and plasma glucose were not significantly different (p < 0.05) among the feeding groups. Fish group fed control diet (containing highest inclusion level of fish meal and without magmeal) gave the lowest haemoglobin concentration (5.96 ± 0.22 g dl−1 ). This value was significantly different from other feeding groups. Stressful conditions in fish and in mammals are associated with decreased growth, haematocrit (packed cell volume) and haemoglobin values, increased whole blood glucose (hyperglycaemia) and plasma cortisol concentrations. No such physiological changes were observed in this study. Results suggest that feeding O. niloticus fingerling with magmeal diets did not cause any form of physiological stress. Magmeal can be used as a good alternative protein source in tilapia diets. 相似文献