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1.
低蛋白日粮选育对鹌鹑氮代谢和血清尿酸浓度的影响 总被引：2，自引：0，他引：2
试验选用日本鹌鹑N(Normal)、B(Brown)品系和杂种群(BN),共进行8个世代(6～20周龄)的选育试验,在粗蛋白(CP)18%日粮条件下分选育组、非选育组以及对照组(CP24%),N、B基础群中选留15种家系,以采食量为主选性状,以产蛋率和排泄氮量为辅选性状作为选育指标进行试验。结果表明:各世代间采食量无显著差异,同世代各品系间选育组采食量均高于非选育组,但显著低于对照组(P0.05);世代间产蛋率有增高的倾向,选育组平均累积产蛋率与非选育组比较显著升高(P0.05),选育组各世代遗传改良极为显著(P0.01);选育组排泄氮量和血清中尿酸含量在改良2世代后明显低于非选育组和对照组(P0.05),排泄氮量分别降低9%～17%左右,BN与N、B比较其排泄氮量有明显降低,但各世代遗传改进量不明显。通过选育N、B新品系,能够显著降低排泄氮量,在BN杂种群中效果更明显。 相似文献
2.
日粮不同精粗比例对中产奶牛生产性能的影响 总被引：2，自引：2，他引：0
本课题应用随机分组试验设计,将40头中等产奶量的荷斯坦奶牛随机分为4组,Ⅰ组为对照组,Ⅱ、Ⅲ和Ⅳ组为试验组,日粮精、粗比例依次为50％：50％、40％：60％、35％：65％和30％：70％,研究不同精、粗比例对奶牛TMR日粮采食量、产奶量、乳脂率以及其他乳成分的影响。结果表明,随着粗饲料比例的增加,试验各组采食量和粗饲料采食量都显著（P〈0．05）高于对照组,产奶量也显著（P〈0．05）高于对照组,并且日产奶量（Y,kg）与日采食量（X,kg）之间存在着显著（P〈0．05）的线性相关关系：y=0．66x-17．73,（r^2=0．76）;试验组乳脂率显著高于对照组,其中试验Ⅲ组和Ⅳ组与对照组相比,差异极显著（P〈0．01）,并且乳脂率（Y,％）与粗饲料采食量（X,kg）之间存在显著（P〈0．05）的线性相关关系：y=0．046x＋1．78,r^2=0．56;试验组其他乳成分含量与对照组均差异不显著（P〉0．05）。统计分析表明,试验Ⅱ组的4％校正乳产量最高,日粮采食量与校正乳产量比值最低,即综合经济效益最好。 相似文献
3.
试验旨在研究大麦酶在高产蛋鸡大麦型日粮中的应用效果。选择486只33周龄海兰褐蛋鸡，随机分为正、负对照组及添加大麦型复合酶的试验组，每组6个重复，每重复27只鸡。试验结果表明，大麦型日粮中添加复合酶，相对负对照组（大麦基础日粮）产蛋率显著提高1．3％（P〈0．05），同时平均日采食量显著下降6．5％（P〈0．05），料蛋比降低7．6％（P〈0．05），蛋质量相当（P〉0．05）；与正对照组（玉米-豆粕型日粮）相比，产蛋率、采食量、料蛋比和平均蛋质量等指标都差异不显著，表明在大麦日粮中添加大麦复合酶可达到与常规日粮相同的饲养效果。 相似文献
4.
试验选用64头25日龄杜×（大×长）三元杂交断奶仔猪。随机分为4组：A、B、C为试验组,分别用猪肠膜蛋白粉（DPS）、大豆浓缩蛋白（SPC）、喷雾干燥猪血浆蛋白粉（SDPP）部分取代基础饲粮的鱼粉;D为对照组,饲喂基础饲粮（玉米-豆粕-鱼粉）。试验从仔猪25日龄断奶开始,70日龄结束。结果显示：试验组日增重均显著高于对照组,其中B组比对照组高13．18％（P〈0．05）;A组、C组分别比对照组高11．53％（P〈0．05）、4．43％（P〈0．05）;B组和A组日增重差异不显著（P〉0．05）,但均显著高于C组,分别高8．38％（P〈0．05）、6．80％（P〈0．05）。B组日采食量比对照组高4．82％（P〈0．05）,A组、C组与对照组相比,日采食量有提高的趋势,但差异不显著（P〉0．05）。A组、B组与对照组相比,料肉比有降低的趋势（P〉0．05）。由此可见,本试验条件下,大豆浓缩蛋白、猪肠膜蛋白粉、猪血浆蛋白粉对早期（25日龄）断奶仔猪的饲喂效果均优于鱼粉,且大豆浓缩蛋白、猪肠膜蛋白粉对仔猪日增重的改善幅度大于喷雾干燥猪血浆蛋白粉（P〈0．05）。 相似文献
5.
本试验旨在研究不同剂型的酸化剂对40日龄以前乳猪采食量、蛋白质消化能力和生产性能的影响。选择母猪体况、胎次和仔猪初生重相近．出生10日龄左右仔猪12窝（DLY、约120头），随机分为3组、每组4个重复、每个重复1窝（约10头），分别饲喂添加了脂埋型酸化剂（2k鲈）、混合型酸化剂（2k矾）和不添加酸化剂的日粮，统计哺乳期间的采食量。所有试验猪均在25日龄断奶、称重，并按性别、体重大小进行调整以确保各试验组猪之间性别和体重保持一致，进入第二个试验期。试验结果表明：哺乳期间脂埋型酸化剂组猪的采食量比混合型酸化剂组猪的采食量提高32．0％（P〈0．01），比对照组提高23．6％（P〈0．05）；混合型酸化剂组猪采食量比对照组猪采食量降低12．4％（P〈0．05）。保育前期（26～40日龄）脂埋型酸化剂组采食量、增重和蛋白质表观消化率分别比混合型酸化剂组提高提高16．4％（P〈0．05）、19．5％（P〈0．01）和6．3％（P〈0．05），而混合型酸化剂组猪采食量、增重和蛋白质表观消化率与对照组猪采食量、增重和蛋白质表观消化率基本一致。由此可见．加工工艺所形成的不同剂型可以显著地影响复合型酸化剂的使用效果，其中以脂埋型酸化剂的使用效果最佳． 相似文献
6.
日粮中添加部分苜蓿草粉对籽鹅产蛋性能的影响 总被引：1，自引：0，他引：1
为研究苜蓿草粉对粉鹅产蛋性能的影响,选择240日龄成年产蛋籽鹅150只,随机分成5组,分另q在4个试验组饲粮中添加5％、10％、15％、20％的苜蓿草粉进行试验,试验期为56d。结果表明：试验组日采食量、料蛋比均低于对照组,其中苜蓿添加量为20％的试验4组日采食量、料蛋比分别比对照组降低19．1％和20．0％,与对照组相比差异显著（P〈0．05）。试验组与对照组的饲养日产蛋率、饲养日产蛋量、每枚蛋重差异不显著（P〉0．05）,但试验组蛋重较对照组有提高的趋势;试验1组和试验2组的受精率、孵化率比对照组分别低7．97％、11．17％和11．87％、8．10％;试验3组和试验4组的受精率、孵化率比对照组分别高14．41％、10．90和11．30％、2．66％。整个试验期间日粮中添加20％苜蓿的试验4组产蛋性能最好,其中日采食量、料蛋比与对照组差异显著（P〈0．05）;其他指标差异不显著（P〉0．05）,但是有明显的提高趋势。整个试验期间试验1,3,4组的经济效益分别比对照组提高13．96％、13．68％、22．01％,其中添加20％苜蓿的试验组取得的经济效益最高。 相似文献
7.
添加剂和制粒对多浪羊棉花秸秆日粮消化利用的影响 总被引：1，自引：0，他引：1
在粉碎棉花秸秆占87％的基础日粮（日粮1）中，添入1．75％营养添加剂（日粮2），并将日粮2制成颗粒（日粮3），分别饲喂给3组1～2岁多浪绵羊（n=6），以研究添加剂和日粮制粒对多浪羊棉花秸秆日粮消化利用的影响。试验结果表明，添喂添加剂可显著提高绵羊对粗蛋白质、钙、磷的采食量和消化率，使保留量分别增加69％（P〈0．05）、268％（P〈0．01）和216％（P〈0．01），但对于物质、有机物、纤维素和半纤维素的消化率无显著影响。将秸秆日粮制粒可使绵羊的采食量增加37％（P〈0．05），但使消化率降低约10％（P〈0．05），结果提高绵羊氮、钙的保留量和日增重。根据推算，多浪羊对粉碎棉花秸秆的消化能为6．57～7．66MJ／kgDM，并且随B粮的营养成分与采食量有所变化。 相似文献
8.
试验选取胎次相近（2～3胎）和分娩日龄相差7d左右的长×大二元母猪24头．随机分为4个处理组．各处理组哺乳仔猪从5日龄开始补料,分别饲喂A、B、C和D4种教槽料。结果表明：母猪从分娩到断奶期间总采食量个体间没有显著差异（P〉0．05）。1～4d和4～21d．仔猪日增重和采食量无显著差异（P〉0．05）;4～28d和全程（1＋28d）仔猪日增重差异不显著（P〉0．05）。21～28d生长阶段,B组仔猪采食量和日增重均显著高于A、C和D组（P〈0．05）：B组公猪日增重显著高于A组（P〈0．05）;B组母猪日增重显著高于A、C和D组（P〈0．05）;负增重比例,B组较其他3组最低。仔猪在各阶段腹泻率差异均不显著（P〉0．05）：断奶后7d．B和C组腹泻仔猪与D和A组差异显著（P〈0．05）。B和C组的仔猪皮毛光滑程度高于A和D组。以上结果表明B组教槽料对仔猪生产性能和减少腹泻情况的效果最好． 相似文献
9.
为了研究复合型抗应激添加剂对夏季蛋鸡产蛋性能、蛋品质及血清生化指标的影响,试验选用120只42周龄伊莎褐蛋鸡,随机分为2组,每组设6个重复,每个重复lO只;对照组饲喂基础日粮,试验组饲喂基础日粮＋80mg／kg复合型抗应激添加剂——禽专用添佳安肽,试验期为60d。结果表明：与对照组相比,试验组产蛋率显著提高5．56％（P〈0．05）,料蛋比显著降低4．74％（P〈0．05）,但对采食量和平均蛋重无显著影响（P〉0．05）;试验组蛋壳强度显著提高15．27％（P〈O．05）,但对蛋壳厚度、蛋白高度、哈夫单位无显著影响（P〉0．05）;试验组血清皮质醇水平显著下降53．91％（P〈0．05）,T_3、T_4水平分别显著下降20．12％、23．57％（P〈0．05）,尿素氮水平显著下降35．35％（P〈0．05）,但对血糖水平无显著影响（P〉0．05）。说明蛋鸡日粮中添加复合型抗应激添加剂——禽专用添佳安肽,具有显著抗热应激效应和增加蛋鸡采食量的作用。 相似文献
10.
本试验研究添加甜味剂和一种新型诱食剂（商品名：美食佳）对断奶仔猪和生长肥育猪生产性能的影响。试验结果表明：在仔猪阶段,与对照组相比,甜味剂组和美食佳组日采食量分别提高7．04％和10．54％,但差异不显著（P〉0．05）;与对照组相比,甜味剂组和美食佳组均显著提高日增重（P〈0．05）,降低料肉比（P〈0．05）;但在提高仔猪生产性能方面。甜味剂组和美食佳组之间差异均不显著（P〉0．05）。甜味剂和美食佳都有提高生长肥育猪日采食量、日增重和饲料转化率的趋势,但效果不显著。 相似文献
11.
12.
本试验旨在研究不同水平月见草籽对育雏期鹌鹑屠宰性能的影响。选择150羽1日龄鹌鹑,随机分成5组,每组3个重复,每个重复10羽鹌鹑,第1组为对照组,饲喂基础日粮;第2~5组为试验组,在基础日粮上分别添加8%、10%、12%、15%的月见草籽(磨碎),进行为期35 d的饲养试验。结果表明,与对照组相比,添加不同水平的月见草籽对育雏期鹌鹑屠宰性能无不良影响(P＞0.05);添加月见草籽的试验组鹌鹑屠体重、全净膛率、胸肌率数值均比对照组高;添加月见草籽的试验组鹌鹑心脏、肝脏、脾脏、法氏囊指数与对照组相比无显著差异(P＞0.05)。因此,月见草籽可作为禽类早期饲料中一种安全型添加剂。 相似文献
13.
The aim of this study was to determine if the negative effects of high ambient temperature (34 degrees C) on egg production, egg quality, digestibility of nutrients, and mineral content of egg yolk could be alleviated by dietary vitamin E (dl-alpha-tocopheryl acetate) supplementation in laying Japanese quails (Coturnix coturnix japanica). Japanese quails (n=240; 7-week-old) were divided into eight groups, 30 birds per group. The quails were fed either a basal diet or the basal diet supplemented with either 125, 250 or 500 mg of dl-alpha-tocopheryl acetate/kg of diet. Birds were kept at 22 degrees C and 55% relative humidity (RH). At 14 weeks of age, the thermo-neutral (TN) group remained in the same temperature as at the beginning of the experiment, whereas the heat stress (HS) group was kept at an environment-controlled room at 34 degrees C and 44% RH for 3 weeks. Heat exposure decreased performance when basal diet was fed (P=0.001). With 250 and 500 mg/kg of diet, an increase in body weight (P=0.01), feed intake (P=0.01), egg production (P=0.001), and improvement in feed efficiency (P=0.01) was found with vitamin E supplementation in quails reared under heat stress conditions (HS). Similarly, egg weight (P=0.01), egg specific gravity (P=0.01), egg shell thickness (P=0.05) and Haugh unit (P=0.01) were positively influenced by vitamin E supplementation. Heat exposure decreased digestibility of dry matter (DM) (P=0.03), organic matter (OM) (P=0.05), crude protein (CP) (P=0.02), ether extract (EE) (P=0.05) and were elevated by supplemental vitamin E (P相似文献
14.
Laila A. Mohamed Mohamed M. El‐Hindawy Mahmoud Alagawany Ayman S. Salah Sabry A. A. El‐Sayed 《Journal of animal physiology and animal nutrition》2019,103(5):1380-1387
This study was to investigate the effect of dietary protein levels and supplementation with two cold‐pressed oils on the performance, immunity and antioxidant indices of growing Japanese quails. A 3 × 4 factorial experiment, using 3 dietary crude protein (CP) levels (22%, 24% and 26%) and 4 supplemental herbal oils levels: control without additives, 250 mg marjoram (Mar), 250 mg thyme (Thy) and 125 mg Mar + 125 mg Thy per kg diet. A total of 720 unsexed, 7‐day‐old quail chicks were randomly distributed into twelve treatment groups (4 replicates per group of 15 chicks in each). The live body weight (LBW) on 42 days and body weight gain (BWG) from 7 to 42 days were significantly improved (p < 0.01 and 0.05) in chicks fed 24% or 26% CP compared with those of the 22% CP group. The groups fed diets supplemented with Mar or in combination with Thy oil exhibited significantly better LBW, BWG and feed conversion ratio (FCR) than the control at all periods except BWG from 21 to 42 days and FCR from 7 to 21 days were not significant. Feed intake was gradually decreased with increasing dietary CP level or adding herbal oils during the periods 21–42 and 7–42 days of age. Plasma triglycerides, cholesterol, total lipids and malondialdehyde were decreased by cold‐pressed oils supplementation, but the activity of reduced glutathione and superoxide dismutase was increased (p < 0.01) compared with the control. In conclusion, quails fed a diet containing 24% or 26% CP or diets supplemented with Mar or Thy oils or both exhibited improvement in the performance, lipid profile, immunity and antioxidant capacity without any detrimental impacts on the other studied parameters. 相似文献
15.
Sakine Yalçın Fatma Oğuz Berrin Güçlü Suzan Yalçın 《Tropical animal health and production》2009,41(1):5-10
This study was conducted to investigate the effects of dietary dried baker’s yeast on laying performance, egg traits and some
blood parameters of quails. In the experiment a total of 342 Japanese quails (Coturnix coturnix japonica) aged ten weeks were equally divided into six groups of 57 (three replicates of 19 quails each). Six levels (0, 4, 8, 12,
16 and 20%) of dried baker’s yeast were included in isonitrogenous and isocaloric diets. The experimental period lasted 14
weeks. At the end of the experiment, there were no significant differences among the groups in body weight, feed intake, protein
intake, egg production, feed efficiency, egg yolk index and egg haugh unit. Blood serum levels of total protein, triglyceride
and cholesterol were not affected by dietary dried baker’s yeast. Diets containing 4 and 8% of dried baker’s yeast increased
the egg weight significantly (p < 0.01). The inclusion of dried baker’s yeast at the level of 20% to the diets reduced egg shell thickness and egg albumen
height. It is concluded that dried baker’s yeast can be used up to 16% in the diets of laying quails without adverse effects
on the measured parameters. 相似文献
16.
An experiment was conducted to determine if vitamin E (alpha-tocopherol-acetate) and chromium (chromium picolinate, Cr Pic) supplementation attenuate the negative effects of cold stress on egg production, egg quality, serum metabolites, and antioxidant status in Japanese quails (Corurnix coturnix japonica). One hundred and fifty laying Japanese quails (50-day-old) were divided into five groups, 30 birds per group. The laying quails kept at 6 degrees C for 12 h/d (08.00 p.m. to 08.00 a.m.) were fed either a basal diet (low temperature-basal diet, CS group) or the basal diet supplemented with either 400 microg of Cr/kg of diet (Cr group), 250 mg of alpha-tocopherol-acetate per kg of diet (Vit. E group) or 400 microg of Cr plus 250 mg of alpha-tocopherol-acetate per kg of diet (Vit. E + Cr group) while quails kept at 18 degrees C were fed a basal diet (thermo-neutral-basal diet, TN group). Performance and egg quality were significantly reduced in CS group compared with TN group. Supplemental chromium and vitamin E significantly increased live weight change, egg production, and improved feed efficiency in cold-stressed laying hens compared with the group fed the basal diet at 6 degrees C. Egg production and egg weight were also greater (P < 0.05) in each supplemental group compared with the CS group. However, a combination of vitamin E and chromium, rather than each separately, provided the greatest performance. Supplemental vitamin E and chromium also increased serum vitamin C and E but, decreased malondialdehyde (MDA) concentrations (P < 0.05); the combination of vitamin E and chromium resulted in the highest levels of serum vitamin C and E within the cold-stressed quails. Results of the present study indicate that combined antioxidant supplements increased performance, egg quality and serum antioxidant levels while lowering MDA in cold-stressed quails. 相似文献
17.
添加溢康素对肉用鹌鹑效果实验 总被引：1，自引：0，他引：1
选用1日龄肉用鹌鹑80羽,随机分为对照组(基础日粮)和试验组(基础日粮添加0.1％溢康素),研究日粮添加溢康素(寡聚糖)对肉用鹌鹑生产性能、抗腹泻、及血清胆固醇含量的影响。结果表明:试验组鹌鹑的日增重提高,料肉比降低(P<0.05),腹泻率降低(P<0.05),血清总胆固醇和肉中胆固醇含量分别降低了12.5(P<0.05)和1.9％。试验结果表明,寡聚糖对肉用鹌鹑的生产性能有促进作用,降低腹泻率,降低血清胆固醇含量和肉中胆固醇的含量。 相似文献
18.
Amr Abd El‐Wahab Rania E. Mahmoud Marwa F. E. Ahmed Mohamed F. Salama 《Journal of animal physiology and animal nutrition》2019,103(6):1768-1775
The objective of the present study was to evaluate the potential effect of dietary calcium butyrate on growth performance, carcass traits and gut health in Japanese quails. In total, 320 one‐day‐old Japanese quails were randomly assigned to 4 equal treatments, with 8 replicates of 10 Japanese quails, for 4 weeks. The Japanese quails in control treatment were fed control diet whereas in the other treatments the Japanese quails were fed diet supplemented with calcium butyrate at 0.3, 0.5 and 0.7 g/kg diet. Data concerning performance measurements were recorded weekly. In addition, eight Japanese quails (one/replicate) from each treatment were selected randomly for serum collection to measure pro‐ and anti‐inflammatory cytokines. Pooled faecal samples from each replicate of each treatment were also collected at three time points (0, 2 and 4 weeks) for count E. coli and C. perfringens. The results showed that after 7 days of the experimental period, Japanese quails fed calcium butyrate supplemented diet at 0.7 g/kg showed a greater (p < .05) body weight and a favourable (p < .05) feed conversion ratio than the other treatments. Moreover, serum superoxide dismutase and catalase activities were increased (p < .05) in Japanese quails fed calcium butyrate supplemented diet at 0.7 g/kg. Calcium butyrate supplementation at 0.7 g/kg was associated with reduction (p < .05) in TNF‐α, IL‐6 and IL1‐β, while IL‐10 was increased (p < .05). In addition, after 2 weeks of calcium butyrate supplementation, a reduction (p < .05) in E. coli and C. perfringens counts was observed in excreta of Japanese quails fed 0.5 and 0.7 g calcium butyrate/kg diets. It is concluded that calcium butyrate supplementation improves body weight gain, reduces E. coli and C. perfringens counts and has anti‐inflammatory/anti‐oxidant effect in Japanese quails. 相似文献
19.
不同水平枯草芽孢杆菌对鹌鹑内脏器官及小肠发育的影响 总被引：1，自引：0，他引：1
选用健康1日龄黄羽雏鹑80只,随机分成4组,每组设2个重复,每个重复10只。1组为对照组,饲喂基础日粮,2、3、4组为试验组,在基础日粮中分别添加0.05%、0.1%、0.2%的枯草芽孢杆菌制剂。结果表明:各处理组与对照组相比胰腺鲜重都有减小趋势,且0.1%组胰腺鲜重与对照组的相比差异显著(P<0.05);0.05%组脾脏干重与对照组的相比差异显著(P<0.05);0.1%组和0.2%组胰腺干重与对照组的相比显著降低(P<0.05);芽胞杆菌对空肠,回肠以及十二指肠未见明显影响(P>0.05)。 相似文献
20.
Moataz Fathi Bandar Aloyaydi Ibrahim Al-Homidan Osama Abou-Emera 《Animal Science Journal》2021,92(1):e13628
We investigated how the geometrical and mechanical properties of eggshell of Japanese quail are affected by strain and flock age. Two strains of quail (white and gray) were used in the current experiment. The results showed that there was no significant difference for all geometric measurements due to strain effect. Eggs produced from the older birds showed significantly higher (P < 0.01) values compared with younger age for all studied traits. Eggs produced from quails at 22 weeks had a significantly (P < 0.01) darker yolk color than that of the younger age. Superiority in shell thickness, shell weight, and breaking force was detected in eggs of gray quails compared with white quails. On the other hand, the eggs from white quails had significantly higher values for static stiffness and Young's modulus as compared with those of gray counterparts. A significant decrease (P < 0.01) was found for fracture toughness and Young's modulus in eggs of aged birds. A significant negative relationship was found between the breaking force and both static stiffness and Young's modulus. A significant positive relationship was observed between breaking force and both shell thickness and shell percentage. The phenotypic correlation between eggshell breaking force and toughness was relatively high. 相似文献