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1.
低磷日粮对育成鸡生产性能及脏器磷含量的影响 总被引：3，自引：0，他引：3
本试验选择48羽健康的罗曼商品蛋鸡,随机分成4个组,分别饲喂含0.1%、0.2%、0.3%和0.4%有效磷的日粮.试验60d.结果表明低磷日粮显著降低增重(P＜0.05);对耗料量、蛋重、蛋壳厚度均无明显的影响;低磷日粮使开产时间早,初产期产蛋率高(P＜0.05).但更换成产蛋鸡日粮后,常磷组产蛋率显著高于低磷组(P＜0.05);蛋壳质量明显好转,日粮钙水平是影响蛋壳质量的主要因素.低磷日粮(0.1%)可导致育成鸡呈现磷缺乏症,以胸骨弯曲和胸部囊肿为早期的临床指征;X线检查可见骨质密度降低、骨皮质变薄.低磷日粮对血浆ALP和ACP无显著的影响(P＜0.05).低磷日粮显著降低血浆、全血、羽毛、胫骨和肾脏磷含量(P＜0.05),上述脏器组织磷含量可作为育成鸡磷缺乏症的实验室诊断指标. 相似文献
2.
日粮不同有效磷水平对蛋雏鸡生长及组织钙磷含量的影响 总被引：3，自引：0，他引：3
选择 96只 1日龄健康的罗曼商品蛋鸡 ,随机分成 4个组 ,分别饲喂含有效磷为 0 1 1 %、0 2 %、0 4 %和 0 6 %的日粮。试验 30天。结果表明 ,低磷、高磷日粮显著降低增重和耗料量 (P <0 0 5) ;低磷日粮 ( 0 1 1 % )可导致雏鸡磷缺乏症及高死亡率 ,以生长迟缓、胸骨弯曲为早期的临床指征 ;试验至 1 0天 ,2、3组ACP活性显著高于 1、4组 (P <0 0 5)。试验至 30天 ,低磷日粮显著降低血浆磷含量(P <0 0 5)。试验至 1 0、2 0天 ,低磷日粮显著降低胫骨磷含量 (P <0 0 5)。血浆、胫骨磷水平可作为雏鸡磷缺乏症的早期实验室诊断指标。低磷日粮显著降低肾脏和胫骨钙含量 (P <0 0 5) ,表明低磷日粮对钙的代谢有不利的影响 相似文献
3.
低磷日粮对产蛋鸡生产性能及脏器组织磷含量的影响 总被引：7，自引：0，他引：7
选择48只178日龄健康罗曼商品蛋鸡,随机分成4个组,分别饲喂含有效磷0．08％,0．12％,0．15％和0．25％的日粮。试验期60d。结果表明,低磷日粮显著降低产蛋率、饲料消耗和蛋重(P＜0．05);日粮磷为0．12％～0．15％时,显著提高蛋壳厚度(P＜0．05)。饲喂含磷0．08％的日粮至45天,鸡呈现胸骨弯曲;至50天表现以瘫痪为主要特征的产蛋疲劳综合症。产蛋下降是产蛋鸡磷缺乏症的最早症状,胸骨弯曲、轻瘫为早期的临床指征;X线检查可见骨质密度降低、骨皮质变薄。低磷日粮显著降低血浆ACP(酸性磷酸酶)活性(P＜0．05)。低磷日粮显著降低血浆、全血、胫骨、肝脏、心脏、肾脏和蛋黄磷含量(P＜0．05)。上述脏器组织磷含量可作为产蛋鸡磷缺乏症的实验室诊断指标;血浆、蛋黄磷可作为磷缺乏症的早期诊断指标,其临界值分别为0．4mg／mL和1．0％。 相似文献
4.
小麦日粮添加非淀粉多糖酶制剂对雏鸡生长及血液中血糖、尿酸和某些激素水平的影响 总被引：1，自引：0，他引：1
2个系列试验研究小麦日粮添加非淀粉多糖酶制剂对雏鸡生长及血液中血糖、尿酸和某些激素水平的影响。试验1将7日龄雏鸡72羽随机分为3组,即小麦基础日粮组、小麦日粮加0.15%浙江酶-1组和小麦日粮加0.15%赤峰酶组。试验2将7日龄雏鸡248羽,随机分为8组,即玉米基础日粮组、小麦基础日粮组、小麦日粮加0.1‰、0.2%、0.5%浙江酶-2组和小麦日粮加0.1%、0.2%、0.5%芬兰酶组。试验1结果表明,和小麦组相比,添加0.15%浙江酶-1组雏鸡增重显著提高(P<0.05),料重比下降但不显著(P>0.05);而添加0.15%赤峰酶组增重提高,料重比下降,但均未达到显著(P>0.05)。试验2结果表明,和小麦日粮组相比,添加浙江酶-2各组雏鸡增重提高9.3%-15.7%(P<0.01),料重比降低6.3%-10.8%(P>0.05);添加芬兰酶各组雏鸡增重提高6.2%-9.7%(P<0.05),料重比降低4.2%-13.3%(P<0.05);添加酶各组和玉米组相比,雏鸡增重无明显差异。试验1和试验2血液指标测定结果表明,小麦日粮添加酶制剂可使雏鸡T4、IGF-1水平显著提高(P<0.05),对T3、胰岛素、血糖和尿酸含量未发现明显影响(P>0.05),提示酶制剂可以通过影响机体的代谢激素促进雏鸡生长。 相似文献
5.
《黑龙江畜牧兽医》2014,(2)
选取320羽1日龄健康无病的蛋用雏鸡,随机分成4组,每组4个重复,每个重复20羽。试验1组为对照组,饲喂基础饲粮,试验2,3,4组分别在基础饲粮中添加100,150,200 mg/kg大蒜素。结果表明:日粮中添加不同剂量大蒜素对蛋雏鸡日采食量有不同程度的改善作用,但差异不显著(P0.05),试验3和4组的平均日增重和成活率均较对照组显著增加(P0.05),平均日增重分别比对照组提高8.26%和10.00%,成活率分别提高6.44%和6.65%;与对照组相比,各试验组的料重比均有所下降,分别降低3.10%、6.98%和7.75%。结论为添加适量的大蒜素具有促进蛋雏鸡生长性能的作用。 相似文献
6.
试验旨在研究日粮中酪氨酸对豫粉1号H系蛋鸡蛋品质和体尺性状的影响。将160只21周龄豫粉1号H系蛋鸡随机分为4组,每组4个重复,每个重复10只,对照组饲喂基础日粮,试验组分别在基础日粮中饲喂添加0.4%、0.6%、0.8%酪氨酸的饲料。试验期40d,结果表明：日粮中添加0.6%的酪氨酸可以显著提高蛋重（P＜0.05）|日粮中添加0.4%、0.6%酪氨酸显著提高哈氏单位（P＜0.05）|日粮中添加0.4%、0.6%酪氨酸显著提高蛋白高度（P＜0.05）。日粮中添加0.4%、0.6%、0.8%酪氨酸显著降低蛋壳厚度（P＜0.05）,且0.4%酪氨酸组和0.8%酪氨酸组差异显著（P＜0.05）|日粮中添加0.4%、0.6%、0.8%酪氨酸显著降低蛋壳强度（P＜0.05）|日粮中添加0.4%、0.6%、0.8%酪氨酸显著降低蛋黄颜色（P＜0.05）。0.4%酪氨酸添加组与对照组蛋壳颜色L*值差异显著（P＜0.05）,颜色偏向暗色。0.4%、0.6%酪氨酸添加组与对照组蛋壳颜色a*值差异显著（P＜0.05）,颜色偏向红色。日粮中添加0.4%酪氨酸即可使骨盆宽度显著增大|日粮中酪氨酸添加至0.8%时可使胫围变小（P＜0.05）。试验表明,日粮中添加酪氨酸,可以影响鸡蛋品质和体尺性状。
[关键词]豫粉1号H系蛋鸡|酪氨酸|体尺性状|蛋品质 相似文献
7.
低聚糖对蛋雏鸡生长性能及粪臭的影响 总被引：3，自引：0，他引：3
选择新出壳罗曼蛋鸡424羽，研究了日粮中分别添加0％、0.15%、0.25%、0.35%的低聚糖对蛋雏鸡生长性能及粪臭的影响。试验结果表明：0－6周龄日粮添加0.15-0.35%的低聚糖，可使蛋雏鸡的ADG、F／G显著高于对照组（P＜0.05)；添加低聚糖0.15%，氮的排泄率低于对照组（P＜0.05)，粪便H2S释放量极显著低于对照组（P＜0.01)；日粮添加0.15%－0.35%低聚糖，粪便氨释放量显著低于对照组（P＜0.05)。0－6周龄蛋雏鸡日粮中低聚糖适宜添加量为：0.15%-0.23%。 相似文献
8.
应用NSP复合酶调整蛋鸡日粮配方的研究 总被引：1，自引：1，他引：1
本研究旨在探讨应用NSP复合酶调整蛋鸡日粮配方的可能性.试验分3个组,对照组饲喂蛋鸡基础日粮;试验1组在基础蛋鸡料中减1%玉米、0.5%豆粕添加1.5%沸石粉和0.03%NSP复合酶;试验2组在基础蛋鸡料中减2%玉米、1%豆粕添加3%沸石粉和0.03%NSP复合酶.试验结果表明:与对照组相比,试验1组和试验2组分别提高产蛋率3.18%和5.28%(P＜0.05);试验1组与对照组在蛋壳厚度、哈夫单位间差异不显著(P＞0.05),与试验2组相比,差异显著(P＜0.05).在蛋鸡日粮中添加NSP复合酶后并调整配方,在一定程度上能降低饲料生产成本,提高养殖经济效益. 相似文献
9.
不同植酸酶对饲喂低磷日粮肉鸡生长性能及粪N、P排泄的影响 总被引：1，自引：0，他引：1
采用306只艾维茵肉鸡研究低磷日粮中添加两种不同植酸酶对肉鸡生产性能、养分利用率及氮、磷排泄的影响。试验共分3个处理组,即对照组、试验Ⅰ组和试验Ⅱ组,每个处理组3个重复,每个重复34只鸡。对照组饲喂正常磷水平的日粮;试验Ⅰ组饲喂低磷＋植酸酶Ⅰ的日粮;试验Ⅱ组饲喂低磷＋植酸酶Ⅱ的日粮。试验结果表明,添加植酸酶替代日粮中部分无机磷,肉鸡的日增重和日采食量与对照组相比降低,但差异不显著（P＞0.05）;提高了肉鸡的存活率（P＜0.05）和钙、磷利用率（P＜0.05）;同时氮利用率有一定程度改善（P＞0.05）,显著减少了氮、磷的排泄量（P＜0.05）。添加植酸酶Ⅰ与添加植酸酶Ⅱ相比,肉鸡的日增重与日采食量提高（P＜0.05）,氮的排泄量显著降低（P＜0.05）,磷的排泄量没有差异。 相似文献
10.
11.
选择240只7日龄肉仔鸡按照体重相近原则随机分为5组,每组6个重复,每个重复8只,分别饲喂添加0%、0.01%、0.055%、0.1%、0.145% β-羟基-β-甲基丁酸(HMB)的试验日粮.采用三层笼养,试验期35 d.试验结果表明:(1)不同水平HMB对肉仔鸡生产性能的总体影响不显著.7～21日龄时,与对照组相比,0.145% HMB组内仔鸡料重比降低6.06%(P＞0.05);0.1%和O.145%HMB肥组肉仔鸡死亡率低于对照组水平.22～42日龄时,0.145%HMB组肉仔鸡采食量与对照组相比降低9.94%,各处理组体增重和料重比差异不显著(P＞0.05);7～42日龄时.0.145%HMB组肉仔鸡采食量与对照组相比降低9.03%(P＜0.05),各处理问体增重和料重比无显著差异,但0.145%HMB组肉鸡料重比最小.0.1%和0.145%HMB组肉仔鸡死亡率低于对照组和其他处理组.(2)肉仔鸡的屠宰性能包括屠宰率、半净膛、全净膛率、胸肌率、腿肌率和腹脂率在各处理问无显著差异(P＞0.05),0.145%HMB组肉仔鸡腿肌率较对照组提高3.74%(P＝0.075).可见,在7～42日龄内仔鸡日粮中添加适量的HMB可显著降低肉仔鸡采食量.而体增重和饲料效率无显著变化,并有促进肉仔鸡腿部肌肉生长发育的趋势. 相似文献
12.
选用7日龄海兰褐蛋用公雏鸡180只,随机分成3组(对照组,试验Ⅰ组、试验Ⅱ组),每组设3个重复,每重复20只雏鸡。对照组饲喂基础日粮,试验Ⅰ、Ⅱ组在基础日粮中分别添加2.5%和5%的酵母培养物,试验期6周,研究酵母培养物对雏鸡生长性能、免疫器官发育和血清相关激素的影响。结果表明,①在日粮中添加酵母培养物可以提高蛋雏鸡的平均日增重(P＜0.05),降低料重比(P＜0.05),并提高成活率(P＞0.05);②酵母培养物能够促进蛋雏鸡免疫器官的发育,提高其器官指数(P＜0.05)。③血清激素含量测定结果表明,添加酵母培养物组鸡血清中三碘甲状腺原氨酸(T3)、甲状腺激素(T4)水平显著提高(P＜0.05),皮质醇(COR)含量显著降低(P＜0.05),生长激素(GH)含量有所升高(P＞0.05)。 相似文献
13.
An experiment was conducted to evaluate the effect of substituting different levels of hazelnut kernel oil meal (HKM) for soybean meal (SBM) in diets for broiler. A total of 450 one-day-old female Ross 308 broiler chicks were allocated randomly to three treatment groups of 150 birds each in a randomized design. Each treatment group consisted of five replicates each of 30 chicks. All diets (in mash form) were formulated to meet nutrient concentrations recommended for broilers. The experiment lasted for six weeks. In the experiment, an SBM control (SBM) diet was compared to two HKM diets, replacing 50 (50HKM) and 100% (HKM) of SBM protein, respectively. Body weight gain, feed intake and feed conversion ratio of broilers were adversely affected ( P < 0.05) by the HKM diets at 42 days of age. Broilers fed 50HKM and HKM had growth performances similar ( P > 0.05). The carcass yield and abdominal fat pads of birds fed diets with SBM were higher ( P < 0.05) than those of chicks fed the 50HKM and HKM diets. The edible inner organ weight of chicks fed diets with HKM was the heaviest ( P < 0.05). It is concluded that SBM cannot be replaced even up to 50% with HKM in commercial broiler diet. 相似文献
14.
1. The effects of maize particle size and steam pelleting on growth and nutrient utilisation were studied with broiler chicks. 2. The presence or absence of 10 microg/kg of 1,25 dihydroxycholecalciferol in diets adequate or deficient in phosphorus was also investigated. Food efficiency was superior with the fine maize diets but calcium retention and phytate phosphorus retention were greatest with the coarse maize diets. Pelleting improved food efficiency and growth in both experiments while phytate phosphorus utilisation was decreased. 3. Addition of 1,25-dihydroxycholecalciferol to the diet increased 16-d body weight, bone ash, plasma dialysable phosphorus and retentions of total phosphorus and phytate phosphorus while decreasing phosphorus deficiency rickets and tibial dyschondroplasia. 4. There were significant interactions between maize particle size and food form. The improvement in calcium retention observed with the coarse maize diets was reduced when the diets were pelleted. When fed as a mash, coarse maize diets resulted in increased plasma dialysable phosphorus levels but when the diet was pelleted this response was eliminated. 5. There was also a significant interaction between particle size and phosphorus concentration in that chicks given diets deficient in phosphorus had improved bone ash when fed coarse maize as compared to fine maize. However, this response was eliminated when the diets were adequate in phosphorus. 6. In one experiment, fine maize diets had higher metabolisable energy values and there was a significant interaction between maize particle size and food form as pelleting improved the metabolisable energy value of coarse maize diets but not fine maize diets. In another experiment only pelleting of the factors studied improved the metabolisable energy value of the diets. 相似文献
15.
【目的】 探讨在霉变饲料中添加葡甘露聚糖改性蒙脱石和壳聚糖改性蒙脱石对蛋雏鸡生长性能和免疫功能的影响。【方法】 将252只8日龄雌性蛋雏鸡随机分为7组,每组6个重复,每个重复6只鸡。第1组饲喂基础饲粮,第2组饲喂霉变饲粮,第3~7组分别饲喂添加0.15%葡甘露聚糖改性蒙脱石、0.15%壳聚糖改性蒙脱石、0.15%高纯纳米蒙脱石、0.15%葡甘露聚糖和0.15%壳聚糖的霉变饲粮,试验期42 d。试验结束后检测各组蛋鸡的生长性能、免疫器官脏器指数、血浆中免疫球蛋白和免疫因子以及脾脏中免疫因子的含量。【结果】 与饲喂基础饲粮组相比,仅饲喂霉变饲粮的蛋雏鸡的平均日增重、血浆和脾脏中白细胞介素-2（IL-2）、白细胞介素-4（IL-4）、白细胞介素-6（IL-6）、干扰素-γ（IFN-γ）含量以及血浆中免疫球蛋白A （IgA）、免疫球蛋白G （IgG）、免疫球蛋白M （IgM）含量均显著降低（P<0.05）;与饲喂霉变饲粮的蛋雏鸡相比,在霉变饲粮中添加葡甘露聚糖改性蒙脱石和壳聚糖改性蒙脱石均显著提高了蛋雏鸡的平均日增重,降低了料重比（F/G）和免疫器官脏器指数（P<0.05）;显著提升了蛋雏鸡血浆和脾脏中IL-2、IL-4、IL-6、IFN-γ以及血浆中IgA、IgG、IgM含量（P<0.05）。【结论】 霉变饲料能导致蛋雏鸡免疫功能下降,而在霉变饲料中添加葡甘露聚糖改性蒙脱石或壳聚糖改性蒙脱石均能缓解霉菌毒素对家禽的毒性作用,提高蛋雏鸡生长性能和增强免疫功能。 相似文献
16.
《The Journal of Applied Poultry Research》2014,23(4):661-670
A total of 750 one-day-old male broiler chicks were randomly fed 5 dietary treatments with 5 replicate pens per treatment. The 5 dietary treatments fed for 42 d were a corn-soybean meal basal diet without antibiotic (control); a mixture of 10 ppm of avilamycin + 60 ppm of salinomycin as antibiotic growth promoters (AGP); 0.1% phenyllactic acid (PLA); 0.2% PLA; and 0.4% PLA. The BW gain and FE were significantly improved in AGP and PLA groups compared with control group. The white blood cells and heterophil counts were significantly higher in the PLA-supplemented groups compared with AGP and control groups, but the heterophil-to-lymphocyte ratio was lower in the control group than other groups. The plasma IgY concentration was significantly increased in birds fed PLA-supplemented diets, but the plasma IgA and IgM concentrations were not different among the treatment groups. In addition, the antibody titer against Newcastle disease virus was significantly higher in PLA-treated compared with control and AGP-treated groups. Neither PLA nor AGP treatments affected the cecal aerobes andSalmonella content; however, cecalLactobacillus population increased in chickens fed 0.1% PLA, and total coliform bacteria population significantly decreased in chickens fed various levels of PLA and AGP. Dietary supplementation of PLA did not affect the pH, lightness, and redness of breast meat, but the water-holding capacity and shear force value increased and the yellowness decreased significantly when birds were fed PLA. It was concluded that dietary supplementation of 0.1 and 0.2% PLA improves BW gain and FE of broiler chickens. In addition, PLA supplementation increases the immune characteristics and the number of lactic acid bacteria, decreases the number of coliform bacteria, and improves the meat quality attributes of broiler chickens. Thus, dietary PLA could be a viable alternative to antibiotics in broiler diets. 相似文献
17.
地顶孢霉培养物对保育仔猪生产性能及免疫水平的影响 总被引：3，自引：0，他引：3
试验选择28日龄杜×长×大三元杂交仔猪32头,随机分为2组,试验组在基础日粮中添加0.25%地顶孢霉培养物,对照组饲喂基础日粮,试验期30 d。结果表明,试验组仔猪日增重比对照组提高10.4%,差异显著（P<0.05）,饲料转化率提高2.6%,腹泻率降低57.7%;试验组平均猪瘟抗体效价极显著高于对照组（P<0.01）,PRRS免疫抗体阳性率也明显高于对照组。因此,地顶孢霉培养物具有促进仔猪生长和提高免疫力的功能。 相似文献
18.
Utilization of potato peels and sugar beet pulp with and without enzyme supplementation in broiler chicken diets: effects on performance,serum biochemical indices and carcass traits 
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下载免费PDF全文 H. M. Abdel‐Hafeez E. S. E. Saleh S. S. Tawfeek I. M. I. Youssef A. S. A. Abdel‐Daim 《Journal of animal physiology and animal nutrition》2018,102(1):56-66
This study was conducted to investigate the effects of including potato peels (PP) and sugar beet pulp (SBP), as unconventional feeds, with and without enzyme in broiler diets from 1 to 42 days of age by observing the growth performance, blood parameters and carcass characteristics. A total of 150, 1‐day old, chicks were randomly assigned into five groups, each with 30 chicks. Birds in group 1 were fed on the control diet. Chicks in groups 2 and 3 were offered diets containing PP and SBP at the rate of 15% and 7.5%, respectively, while those in groups 4 and 5 were fed the same diets but with adding an enzyme mixture. Using the unconventional feeds in the diets was found to decrease the body weight (BW). However, the feed intake, weight gain and feed conversion did not differ from the control in PP at the grower period, but decreased in SBP throughout the experiment. Addition of enzyme greatly improved the BW in PP and SBP to a degree that it surpasses the control and also increased the feed intake and conversion. The total cholesterol and low‐density lipoprotein cholesterol serum levels were decreased in all tested groups. Carcass yield was not affected by treatments, but the carcass fat content was reduced using the unconventional feeds with or without enzyme. In conclusion, PP can be used at a rate of 15% in the grower diets of broilers. Furthermore, 15% PP or 7.5% SBP can be included in starter and grower diets, but with the addition of enzymes. This can help in solving the problem of current shortage and rising costs of conventional feeds. 相似文献
19.
中草药添加剂对蛋雏鸡增重及血液生化指标的影响 《畜牧与饲料科学》2015,36(8):64-64
为了解不同中草药复方添加剂对蛋雏鸡增重及血液生化指标的影响,选取1日龄健康雄性海兰蛋鸡雏80只,随机分为4组（试验I～Ⅲ组,对照组）,每组20只。试验I～Ⅲ组分别饲喂具有增强机体免疫力、健脾消食及抗菌抗病毒作用的中草药复方饲料添加剂,测定并比较各组蛋雏鸡在试验期间的增重及血液生化指标。结果表明,试验I组蛋雏鸡的试验期增重及血清胆固醇含量显著高于对照组（P〈0．05）,其余指标差异均不显著（19〉0．05）;试验Ⅱ组蛋雏鸡的血液总蛋白、血清钙、血清无机磷均显著高于对照组（P〈0．05）,试验期增重及血清胆固醇含量极显著高于对照组（P〈0．01）：试验Ⅲ组蛋雏鸡的试验期增重及各项血液生化指标与对照组相比,差异均不显著（P〉0．05）。健脾消食类的中草药复方饲料添加剂能够显著促进蛋雏鸡生长,有效改善蛋雏鸡血液生化指标,有利于雏鸡健康、快速的生长。 相似文献