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1.
采用体外细胞培养和放射免疫测定法（RIA）测定日粮能量对鸟鸡外周血清促性腺激素与垂体分泌促性腺激素的影响。日粮能量处理：低能Ⅱ组、低能I组、对照组、高能I组、高能Ⅱ组;体外培养垂体细胞组分：高能组、对照纽、低能组。结果显示,血清中FSH含量,对照组与高能Ⅱ组相比差异显著（P〈0．05）,与低能I、Ⅱ组相比差异极显著（P〈0．01）;血清中LH含量,对照组与高能I组、高能Ⅱ组组间差异显著（P〈0．05）;低能Ⅱ组与高能I组、低能Ⅱ组与高能Ⅱ组、低能I组与高能I组、低能I组与高能Ⅱ组组间差异极显著（P〈0．01）;单层垂体细胞中FSH含量,高能组和对照组与低能组比差异显著（P〈0．05）;单层垂体细胞中LH含量,高能组与低能组比较差异极显著（P〈0．01）,对照组与低能组比较差异不显著。结果表明,日粮能量对处理体外培养乌鸡垂体细胞分泌FSH、LH有促进作用。 相似文献
2.
《动物营养学报》2020,(8)
本试验旨在研究饲粮能量水平对围产期肉牛营养物质表观消化率和血清生化指标的影响。选取体重[(335.7±21.6) kg]相近的妊娠后期健康西门塔尔杂交牛(西门塔尔公牛×云南本地黄牛母牛)初产母牛21头,随机分为3组(每组7个重复,每个重复1头牛),饲粮能量水平分别为1.06×NRC(高能组)、1.00×NRC(中能组)和0.94×NRC(低能组)能量需要,等氮不等能。正式试验期为产前30 d至产后30 d,共计60 d。结果表明:1)低能组饲粮可显著提高母牛围产期平均干物质采食量(ADMI)(P0.05)。3组母牛的单位体重代谢能摄入量随着饲粮能量水平的提高而显著提高(P0.05)。产后30 d高能组母牛比中能组和低能组少失重12.9和13.9 kg(P0.05)。2)产前高能组母牛的中性洗涤纤维、酸性洗涤纤维、钙、磷表观消化率显著高于低能组(P0.05)。3)产后低能组和中能组母牛血清非酯化脂肪酸(NEFA)和β-羟基丁酸(BHBA)的含量显著高于高能组(P0.05)。综上所述,本试验中,高能饲粮(1.06×NRC)显著提高产前营养物质消化率和能量摄入量,减少肉牛产后30 d的失重;降低母牛产后血清NEFA和BHBA含量。因此,提高围产期饲粮能量水平(1.06×NRC)缓解了肉牛产后能量负平衡,有利于初产母牛的产后体重增加和体况恢复。 相似文献
3.
文章旨在研究紫花苜蓿提取物（Alfalfa Extract,AE）对肉牛生长性能、免疫功能及屠宰性能的影响。试验将60头初始体重[（416.47±27.40）kg]无显著差异且健康无病的肉牛随机分为4组，每组3个重复，每个重复5头。各组肉牛的基础日粮参考NRC(2002)配制，且分别在基础日粮中添加0、1、2、3 kg/t的紫花苜蓿提取物，记为AE0组、AE1组、AE2组、AE3组。试验为期180 d。结果表明：（1）AE2组肉牛末重显著高于AE0组（P<0.05）,AE2组肉牛平均日增重显著高于其他3组（P<0.05）,AE1、AE2组肉牛平均日采食量显著高于AE0组、AE3组（P<0.05）,AE2组、AE3组料重比显著低于AE0组（P<0.05）。（2）AE2组、AE3组肉牛血清中IgA含量显著高于AE0组、AE1组（P<0.05）,AE0组肉牛血清中IgM、白细胞介素-2含量显著低于其他3组（P<0.05）。（3）AE2组肉牛宰前活重、胴体重量、净肉重量显著高于AE0组（P<0.05）,AE2组肉牛肉骨比显著高于AE0、AE1组（P&l... 相似文献
4.
试验旨在研究日粮能量水平对红河黄牛公牛育肥前、中、后期育肥性能及血清生化指标的影响。选用体况良好、体重约150 kg的红河黄牛公牛15头,随机分为3组,每头为1个重复。试验分前（150～190 kg）、中（190～240 kg）、后（240～280 kg）3个时期进行,每期分别饲喂低（低能组）、中（中能组）、高（高能组）3种不同能量水平日粮,前期肉牛综合净能分别为4.53、4.83、5.13 MJ/kg,中期分别为4.99、5.29、5.59MJ/kg,后期分别为5.30、5.60、5.90MJ/kg。每期试验预试期5d,正试期70d。记录采食量,测量各个时期牛的体重和体尺,每期结束采集血液进行生化指标检测。结果表明：3个时期,中能组红河黄牛的平均日增重高于低能组和高能组（P<0.05）;育肥中期,中能组红河黄牛的耗料增重比低于高能组和低能组（P<0.05）,中能组红河黄牛的体长、体躯和肢长指数高于低能组（P<0.05或P<0.01）,中能组红河黄牛体躯和肢长指数高于高能组（P<0.01）;育肥后期,中能组红河黄牛的体长和肢长指数高于低能组（P<0.... 相似文献
5.
本试验旨在研究不同能量水平对道寒杂交羔羊生长性能、能量和氮表观消化率的影响,为肉用羔羊配制适宜营养水平的日粮提供依据。选用体重20 kg左右的道寒杂交断奶公羔48只,随机分为3组,每组4个重复,每个重复4只。以NRC(2007)营养需要量参数为依据,配制不同代谢能水平(10.12、11.11、12.05 MJ/kg)日粮,可消化蛋白(11%)、钙和磷水平一致。试验预试期15 d,正试期50 d。当其中1组平均体重达到30 kg时,每组取6只,采用全收粪法收集粪样,测定能量和氮表观消化率。结果表明:羔羊体重、日增重、采食量均随能量水平的增加而提高,其中高能组极显著高于低能组(P0.01),显著高于中能组(P0.05),中能组显著高于低能组(P0.05);高能组日粮能量表观消化率显著高于低能组和中能组(P0.05),低能组与中能组间差异不显著(P0.05);高能组和中能组的日粮氮表观消化率极显著高于低能组(P0.01),高能组与中组间差异不显著(P0.05)。综上所述,日粮能量水平影响羔羊能量和蛋白的消化利用及生长发育,当20~30 kg羔羊日粮含11%可消化蛋白,代谢能为12 MJ/kg时羔羊生长性能、能量和蛋白利用率最佳。 相似文献
6.
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
7.
饲粮能量水平对舍饲育肥牦牛生长性能、体尺增长及血清生化和内分泌激素指标的影响 总被引：1，自引：0，他引：1
《动物营养学报》2021,33(8)
本试验旨在研究饲粮能量水平对舍饲育肥牦牛生长性能、体尺增长及血清生化和内分泌激素指标的影响。试验采用单因子完全随机设计,选取24头体况良好、体重(126.6±10.5) kg、3周岁左右的林周县本地公牦牛,随机分为3组,每组4个重复,每个重复2头牛。各组分别饲喂能量水平为3.72(低能组)、4.45(中能组)和5.31 MJ/kg(高能组)的试验饲粮。预试期10 d,正试期90 d。结果表明:1)高能组末重和综合净能摄入量极显著高于中、低能组(P0.01)。高能组平均日增重极显著高于中、低能组(P0.01),中能组极显著高于低能组(P 0.01)。高能组料重比极显著低于中、低能组(P0.01),中能组极显著低于低能组(P0.01)。各组之间平均日采食量差异不显著(P0.05)。2)高能组体高和胸围增长极显著高于中、低能组(P0.01)。各组之间体斜长和管围增长差异不显著(P0.05)。3)高能组血清甘油三酯和非酯化脂肪酸含量极显著高于中、低能组(P0.01),中能组显著高于低能组(P0.05)。高能组血清胆固醇含量和乳酸脱氢酶活性极显著高于中、低能组(P0.01)。各组之间血清葡萄糖、尿素氮、白蛋白、球蛋白、总蛋白含量和碱性磷酸酶活性及白球比差异不显著(P0.05)。4)高能组血清胰岛素、胰岛素样生长因子-1和瘦素含量极显著高于中、低能组(P0.01)。由此可见,饲粮能量水平从3.72 MJ/kg提高到5.31 MJ/kg显著提高了舍饲育肥牦牛的平均日增重,同时促进育肥牦牛糖、脂肪、氮代谢。因此,对短期舍饲育肥牦牛,可通过提高饲粮能量水平有效发挥其育肥潜力。 相似文献
8.
试验旨在探讨在饲粮中添加不同比例的辣木叶多糖对三黄鸡生长性能、血清生化指标和免疫功能的影响。选取1日龄三黄鸡600羽,随机分成5组,每组8个重复,每个重复15羽三黄鸡。对照组（CON组）饲喂基础饲粮,T1组、T2组、T3组、T4组分别在基础饲粮添加0.08%、0.12%、0.16%、0.20%的辣木叶多糖。试验期42 d。结果显示,与对照组相比,1～21日龄,T1组、T2组、T3组三黄鸡的料重比显著降低（P<0.05）,T3组42日龄三黄鸡的体重显著升高（P<0.05）;1～42日龄,各试验组三黄鸡的料重比均显著降低（P<0.05）。与对照组相比,T2组血清白蛋白含量显著升高（P<0.05）,T3组血清尿素氮含量显著降低（P<0.05）;T1组、T2组、T3组血清葡萄糖含量显著增加（P<0.05）;T3组胸腺指数显著升高（P<0.05）,T1组、T3组、T4组血清白细胞介素-4 (IL-4)含量显著升高（P<0.05）,T2组、T3组血清白细胞介素-6 (IL-6)含量显著降低（P<0.05）,各试验组血清白细胞介素-1β (IL-... 相似文献
9.
试验旨在研究育肥期波本杂肉羊能量和蛋白质营养需要量参数,筛选出一个最佳能量和蛋白质搭配的饲料配方,为科学饲养提供理论依据和生产指导。试验选择16只3月龄断奶波隆杂交F1代公羔,采用4×4拉丁方设计,以NRC（1981）营养需要推荐量为参考设计了低能低氮、高能低氮、低能高氮和高能高氮（NRC）4种能氮比日粮,分别为日粮1、2、3和日粮4。试验结果表明,舍饲波隆杂交羔羊育肥期对象草-玉米型日粮干物质采食量与代谢体重和日增重的关系为：DMI（g/d）=181.3W^0.75-0.61ΔW-886.2（r=0.9287）;舍饲波隆杂羔羊育肥期粗蛋白质（CP）、总能（GE）、消化能（DE）需要量的估测模型分别为：CP（g/d）=19.56 W^0.75＋0.25ΔW-128.6（r=0.7836）,GE（MJ/d）=2.98 W^0.75＋0.023ΔW-18.69（r=0.8257）,DE（MJ/d）=1.26 W0.75-0.006ΔW-3.56（r=0.6236）;3~6月龄舍饲育肥期波隆杂羔羊,日粮总能代谢率平均为0.49%,粗蛋白质的消化率平均为0.63%,每增重1 g体沉积蛋白质需要量为0.32 g。 相似文献
10.
文章旨在研究不同饲养水平对瑶山鸡生产性能和胴体特征的影响。试验将400只平均体重一致的1日龄瑶山鸡随机分为2组,每组4个重复,每个重复50只。2组分别饲喂代谢能水平为3155 Kcal/kg、粗蛋白质水平为225 g/kg的高能高蛋白日粮和代谢能水平为2965 Kcal/kg、粗蛋白质水平为195 g/kg的低能低蛋白日粮。试验共开展10 w。同时将240只产蛋高峰期瑶山鸡随机分为2组,每组4个重复,每个重复30只,饲喂上述日粮4 w,试验结束后收集受精蛋进行孵化。结果:高能高蛋白组种鸡在8和10 w的体重和采食量均显著高于低能低蛋白组(P<0.05),而料重比显著降低(P<0.05)。高能高蛋白组种鸡受精率和孵化率显著高于低能低蛋白组(P<0.05),而残次率、胚胎死亡率和出壳前死亡率显著降低(P<0.05)。1~10 w时高能高蛋白组种鸡体重均显著高于低能低蛋白组(P<0.05),与低能低蛋白组相比,高能高蛋白组屠体重、可食用部分显著升高(P<0.05),腿肌占比显著降低(P<0.05)。结论:中等生长速度的瑶山肉种鸡可以更有效地利用高能量高蛋白(代谢能:3155 Kcal/kg,粗蛋白质:225 g/kg)饲料。 相似文献
11.
波尔山羊×隆林杂交羔羊育肥期能量和蛋白质营养需要的研究 总被引：6，自引：2，他引：4
试验旨在研究育肥期波本杂肉羊能量和蛋白质营养需要量参数,筛选出一个最佳能量和蛋白质搭配的饲料配方,为科学饲养提供理论依据和生产指导。试验选择16只3月龄断奶波隆杂交F1代公羔,采用4×4拉丁方设计,以NRC（1981）营养需要推荐量为参考设计了低能低氮、高能低氮、低能高氮和高能高氮（NRC）4种能氮比日粮,分别为日粮1、2、3和日粮4。试验结果表明,舍饲波隆杂交羔羊育肥期对象草 玉米型日粮干物质采食量与代谢体重和日增重的关系为：DMI（g/d）=181.3W0.75－0.61ΔW－886.2（r=0.9287）;舍饲波隆杂羔羊育肥期粗蛋白质（CP）、总能（GE）、消化能（DE）需要量的估测模型分别为：CP（g/d）=19.56 W0.75＋0.25ΔW－128.6（r=0.7836）,GE（MJ/d）=2.98 W0.75＋0.023ΔW－18.69（r=0.8257）,DE（MJ/d）=1.26 W0.75－.006ΔW－3.56（r=0.6236）;3~6月龄舍饲育肥期波隆杂羔羊,日粮总能代谢率平均为0.49%,粗蛋白质的消化率平均为0.63%,每增重1 g体沉积蛋白质需要量为0.32 g。 相似文献
12.
本试验旨在研究不同水平低蛋白饲粮补充过瘤胃氨基酸对育肥杜寒杂交肉用母羊增重、血清中蛋白与激素指标、肌肉中氨基酸含量和肉品质的影响,探索育肥肉羊饲粮低蛋白质含量的理论价值和应用效果。选用150只体重相近4月龄育肥杜寒杂交肉用母羊,随机分成5组,每组3个重复,每个重复10只羊。对照组饲喂粗蛋白质水平为16%的饲粮,试验组饲喂氨基酸平衡低蛋白饲粮,分为LP14组(饲粮CP=14%)、LP12组(饲粮CP=12%)、LP10组(饲粮CP=10%)和LP12+NPN组(饲粮CP=12%,添加1%尿素),各试验组饲粮中都添加过瘤胃赖氨酸、蛋氨酸、苏氨酸和精氨酸,使其和对照组饲粮中这4种氨基酸的含量保持一致,试验期90 d。结果表明:(1)不同水平的低蛋白饲粮在补充过瘤胃氨基酸后,对育肥杜寒杂交肉用母羊的试验末重、净增重和饲料转化比均无显著性影响(P>0.05),对照组干物质采食量高于各试验组(P<0.01),LP12+NPN组育肥羊干物质采食量高于其他低蛋白组(P<0.01)。(2)各组间试验羊血清总蛋白(TP)、球蛋白(GLB)、生长激素(GH)、类胰岛素样生长因子I(IGF-I)均无显著性差异(P>0.05),低蛋白组育肥羊血清尿素氮(BUN)显著低于对照组(P<0.01)。(3)各组肉羊背最长肌在肉色、滴水损失、pH0、pH24、熟肉率以及剪切力上均差异不显著(P>0.05)。(4)各组间试验羊的背最长肌中氨基酸的含量差异不显著(P>0.05)。在本试验条件下,降低育肥杜寒杂交肉羊饲粮粗蛋白质水平1~4个百分点并补充过瘤胃赖氨酸、蛋氨酸、苏氨酸、精氨酸和尿素,不会影响其增重情况、血清指标和肉品质,即低蛋白饲粮补充过瘤胃氨基酸可以满足肉羊育肥阶段的营养需要。 相似文献
13.
Mohammed S Urge M Animut G Awigechew K Abebe G Goetsch AL 《Tropical animal health and production》2012,44(6):1181-1189
Eighteen Arsi-Bale (local) and 18 Boer?×?Arsi-Bale (crossbred) male goats, initially approximately 10 months of age, were used in a 12-week experiment to investigate potential interactions between genotype and nutritional plane in growth performance, carcass and skin characteristics, and mass of non-carcass components. Grass hay (6.7% crude protein and 71.9% neutral detergent fiber) was consumed ad libitum supplemented with 150, 300, or 450 g/day (dry matter; low, moderate, and high, respectively) of a concentrate mixture (50% wheat bran, 49% noug seed cake, and 1% salt). Initial body weight was 20.7 and 14.0 kg for crossbred and local goats, respectively (SE = 0.36). Hay dry matter intake was greater (P < 0.05) for crossbred vs. local goats (461 and 429 g/day) and similar among concentrate levels (438, 444, and 451 g/day for high, moderate, and low, respectively; SE = 4.7). Average daily gain was greater (P < 0.05) for crossbred than for local goats (36.6 and 20.8 g) and differed (P < 0.05) among each level of concentrate (43.7, 29.6, and 12.8 g for high, moderate, and low, respectively). Dressing percentage was similar between genotypes (41.1% and 41.1% live body weight for crossbred and local goats, respectively; SE = 0.59) and greater (P < 0.05) for high vs. low (43.5% vs. 38.7% live body weight). Carcass weight differed (P < 0.05) between genotypes (9.23 and 6.23 kg for crossbred and local goats, respectively) and high and low (8.80 and 6.66 kg, respectively). Carcass concentrations of physically dissectible lean and fat were similar between genotypes and high and low concentrate levels. There were few differences between genotypes or concentrate levels in other carcass characteristics such as color and skin properties. Relative to empty body weight, the mass of most non-carcass tissues and organs did not differ between genotypes. However, the low concentrate-level mass of omental-mesenteric fat was greater (P < 0.05) for local vs. crossbred goats (1.06% vs. 0.54% empty body weight, respectively). In conclusion, growth performance and carcass weight advantages from crossing Boer and Arsi-Bale goats were similar with a low-quality basal grass hay diet regardless of level of supplemental concentrate. 相似文献
14.
为了解葛藤草粉在山羊全混合日粮中等量替代紫花苜蓿草粉的效果,探索葛藤草粉在当地山羊生产中的应用价值,首先对葛藤草粉的常规营养成分进行测定, 然后选择体重［（18.20±1.65） kg］相近的5月龄波尔山羊×马头山羊阉公羔75只,随机分为5组,每组15只。对照组饲喂基础日粮,其余4个处理组分别以葛藤草粉等量替代紫花苜蓿草粉,即25%、50%、75%和100%。于正试期第50天开始,进行为期7 d的消化代谢试验,分析波杂山羊血清生化参数、日粮养分表观消化率、生长性能的变化。结果表明,葛藤草粉的粗蛋白质、钙、磷含量与苜蓿草粉相近,粗脂肪、中性洗涤纤维、酸性洗涤纤维含量高于苜蓿草粉。用葛藤草粉替代苜蓿草粉,75%替代组波杂山羊平均日增重、平均日采食量以及料重比最佳,其中平均日增重比对照组增加23.2%,而料重比下降15.49%（P<0.05）。随着替代比例的增加,波杂山羊粗蛋白表观消化率、中性洗涤纤维及干物质表观消化率显著提高（P<0.05）,但处理组间酸性洗涤纤维、粗脂肪、钙及总磷表观消化率差异不显著（P>0.05）。25%、50%、75%和100%组波杂山羊血清丙二醛水平较对照组分别降低11.3%、19.8%、25.4%和26.3%（P<0.05）,而血清超氧化物歧化酶、总抗氧化能力、过氧化氢酶和谷胱甘肽过氧化物酶较对照组显著升高（P<0.05）,其中100%替代组血清超氧化物歧化酶、总抗氧化能力、过氧化氢酶和谷胱甘肽过氧化物酶较对照组分别升高8.8%、20.7%、49.4%及34.4%（P<0.05）。25%、50%、75%和100%组血清免疫球蛋白IgA比对照组分别提高15.8%、21.0%、26.3%（P<0.05）和21.0%（P<0.05）,血清免疫球蛋白IgG分别提高6.8%、9.5%、12.2%、10.8%（P<0.05）,血清免疫球蛋白IgM分别提高9.1%,12.1%、15.2%和12.1%（P<0.05）。因此,葛藤草粉不仅能改善波杂山羊的生产性能,而且能提高波杂山羊的免疫功能;可替代紫花苜蓿,作为当地山羊的优质饲草饲料。 相似文献
15.
R. L. de Oliveira G. G. P. de Carvalho R. L. Oliveira M. S. L. Tosto E. M. Santos R. D. X. Ribeiro T. M. Silva B. R. Correia L. M. A. de Rufino 《Tropical animal health and production》2017,49(7):1401-1407
The objective of this study was to evaluate the effects of the inclusion of palm kernel (Elaeis guineensis) cake in diets for goats on feeding behaviors, rectal temperature, and cardiac and respiratory frequencies. Forty crossbred Boer male, non-castrated goats (ten animals per treatment), with an average age of 90 days and an initial body weight of 15.01 ± 1.76 kg, were used. The goats were fed Tifton 85 (Cynodon spp.) hay and palm kernel supplemented at the rates of 0, 7, 14, and 21% of dry matter (DM). The feeding behaviors (rumination, feeding, and idling times) were observed for three 24-h periods. DM and neutral detergent fiber (NDF) intake values were estimated as the difference between the total DM and NDF contents of the feed offered and the total DM and NDF contents of the orts. There was no effect of palm kernel cake inclusion in goat diets on DM intake (P > 0.05). However, palm kernel cake promoted a linear increase (P < 0.05) in NDF intake and time spent feeding and ruminating (min/day; %; period) and a linear decrease in time spent idling. Palm kernel cakes had no effects (P > 0.05) on the chewing, feeding, and rumination efficiency (DM and NDF) or on physiological variables. The use up to 21% palm kernel cake in the diet of crossbred Boer goats maintained the feeding behaviors and did not change the physiological parameters of goats; therefore, its use is recommended in the diet of these animals. 相似文献
16.
M R Cameron J Luo T Sahlu S P Hart S W Coleman A L Goetsch 《Journal of animal science》2001,79(6):1423-1430
The number of Boer crossbred meat goats has been increasing rapidly, although how their growth and slaughter traits compare with those of Spanish goats and influences of maternal genotype have not been thoroughly evaluated. This information would be useful to achieve optimal meat goat production systems and yield of goat products desired by consumers. Therefore, postweaning growth (9 to 24 wk of age) and slaughter traits (212 +/- 5.0 d of age) of Boer x Spanish, Spanish, and Boer x Angora wethers (n = 16, 18, and 18 for growth measures, respectively, and n = 6 per genotype for slaughter traits) consuming a concentrate-based diet were compared. Over the 16-wk performance period, ADG, DMI, and ADG:DMI were greater (P < 0.05) for Boer crossbreds than for Spanish goats (ADG: 154, 117, and 161 g; DMI: 646, 522, and 683 g/d; ADG:DMI: 263, 235, and 261 g/kg for Boer x Spanish, Spanish, and Boer x Angora, respectively). Dressing percentage (46.3, 47.3, and 47.0% of BW; SE = 1.21) and quality grade score (11.17, 9.67, and 11.17 for Boer x Spanish, Spanish, and Boer x Angora, respectively; SE = 0.66 [12 = Choice+; 11 = Choice; 10 = Choice-; 9 = Good+]) were similar among genotypes. Weights of some noncarcass components were greater for Boer crossbreds than for Spanish goats, but relative to empty BW, noncarcass component weights were similar among genotypes. Concentrations of moisture, ash, fat, and protein in carcass and noncarcass components did not differ among genotypes. Contributions to the carcass of different primal cuts were similar among genotypes, and there were few differences in concentrations of separated lean, bone, and fat in primal cuts. In conclusion, when consuming a concentrate-based diet, early postweaning growth rate was similar between Boer x Spanish and Boer x Angora wethers and greater for Boer crossbreds than for Spanish wethers. Slaughter traits were primarily related to differences in final BW. 相似文献
17.
18.
Djuricic D Dobranic T Grizelj J Gracner D Harapin I Stanin D Folnozic I Getz I Cvitkovic D Samardzija M 《Reproduction in domestic animals》2011,46(4):674-677
The metabolism of proteins in the blood serum in Boer and Saanen goats was investigated during puerperium. Twenty Boer goats (10 primiparous and 10 pluriparous) and 10 Saanen goats (five primiparous and five pluriparous) between 2 and 5 years of age were used in this research. Blood for analysis was taken every fourth day from day 3 until day 40 post-partum. Blood samples were collected by jugular puncture. In the obtained blood serum, the concentration of total proteins (PT) and albumin (ALB), and the activity of enzymes aspartate aminotransferase (AST) [the Enzyme Commission number (EC number) 2. 6. 1. 1.], gamma-glutamyltransferase (GGT) (EC 2. 3. 2. 2.), creatine kinase (CK) (EC 2. 7. 3. 2.) and alkaline phosphatase (AP) (EC 3. 1. 3. 1.) were determined by spectrophotometry. These parameters were in physiological ranges in Boer goats and in Saanen goats, without significant differences according to number of kids per doe. According to the research results of the blood serum in goats during puerperium, there were no significant differences in the concentration of ALB. Boer goats had significant higher (p < 0.05) concentration of PT and enzyme activity of AP, CK and GGT. Saanen goats had only enzyme activity of AST significantly higher (p < 0.05). Enzyme activity of alkaline phosphatase was significant higher (p < 0.05) in pluriparous goats in both breeds than in primiparous. The obtained results may represent a contribution to a better understanding of protein metabolism during puerperium in dairy and meat goats and for diagnostic purposes. 相似文献
19.
Rosalina M. LAPITAN Arnel N. DEL BARRIO Osamu KATSUBE Tomomi BAN-TOKUDA Edgar A. ORDEN Alberto Y. ROBLES Libertado C. CRUZ Yukio KANAI Tsutomu FUJIHARA 《Animal Science Journal》2008,79(1):76-82
The objective of this study was to compare the fattening performance in Brahman grade cattle (crossbred cattle) and crossbred water buffalo at the same young age and fed with high roughage based fattening rations in the Philippines. Ten crossbred cattle and 10 crossbred water buffalo, aged between 18 and 24 months old were used in this experiment. The animals were fed diets consisting of 85% Napier or Para grass and 15% concentrate mixture (CM) on a dry matter (DM) basis. The grass, total DM intake and bodyweight gain were significantly (P < 0.01) higher for the crossbred water buffalo than for the cattle. There was no species significant difference in the digestion coefficient and feed conversion rate between the crossbred cattle and water buffalo. The return over feed cost for fattening was significantly (P < 0.05) higher in the crossbred water buffalo than in the cattle. These results clearly indicate that under high roughage‐based fattening rations, young crossbred water buffalo are better able to utilize the roughage and they perform better in terms of feed intake and live weight gains than the crossbred cattle in the Philippines. 相似文献
20.
低海拔异地育肥牦牛与本地杂交肉牛(秦川×西门塔尔)在不同非蛋白氮水平饲粮条件下血液生理生化指标及生长性能的差异 总被引：1，自引：0，他引：1
为探究异地育肥牦牛模式,本试验对比了低海拔异地育肥耗牛与本地杂交肉牛(秦川×西门塔尔)在同等条件下血液生理生化指标和生长性能的差异。将体重相近的8头1岁本地杂交肉牛(秦川×西门塔尔)和8头4岁青海牦牛各分为2组,每组4头,同一品种的2组试验牛分别饲喂低非蛋白氮饲粮[LNPN,饲粮中缓释尿素添加量为1.0%(干物质基础)]和高非蛋白氮饲粮[HNPN,饲粮中缓释尿素添加量为1.5%(干物质基础)]。预试期10 d,正试期50 d。结果发现:牦牛与肉牛均在LNPN条件下表现出最高的平均日采食量和最小的料重比。饲粮非蛋白氮水平未对牦牛与肉牛的血常规指标造成显著影响(P0.05),但是牦牛在各饲粮条件下中性粒细胞数目(Gran#)、平均红细胞体积(MCV)、平均红细胞血红蛋白含量(MCH)、红细胞分布宽度标准差(RDW-SD)、平均血小板体积(MPV)和血小板分布宽度(PDW)显著高于肉牛(P0.05),而平均红细胞血红蛋白浓度(M CHC)和血小板数目(PLT)显著低于肉牛(P0.05)。饲粮非蛋白氮水平未对肉牛和牦牛各项血清生化指标产生显著影响(P0.05)。牦牛在各饲粮条件下血清总蛋白(TP)、尿素氮(UN)、肌酐(GREA)、免疫球蛋白A(Ig A)、免疫球蛋白M(Ig M)和免疫球蛋白G(Ig G)水平均显著高于肉牛(P0.05)。牦牛在HNPN条件下的血清白蛋白(ALB)水平显著低于LNPN条件下(P0.05)。本试验结果表明,在肉牛和牦牛育肥饲粮中添加1.0%的缓释尿素替代饲粮蛋白质是可行的;低海拔异地育肥牦牛不会对牦牛健康产生不利影响。 相似文献