乌骨鸡蛋形指数对孵化率的影响研究

将乌骨鸡种蛋按蛋形指数分为Ａ（≤７２．０％）、Ｂ（７２．１％－７４．０％）、Ｃ（７４．１％－７６．０％）、Ｄ（７６．１％－７８．０％）、Ｅ（≥７８．１％）五组进行孵化,结果表明：五组包骨 受精蛋孵化率分别为８２．６％、８６．１％、９０．２％、８７．２％、８２．５％、Ｃ组显著高于Ａ、Ｂ、Ｄ、Ｅ各组（Ｐ〈０．０５）,并极显著地高于Ａ组和Ｅ组（Ｐ〈０．０１）,蛋形指数为７４．１％－７６．０％的乌骨鸡种蛋孵化效果最佳。     

乌骨鸡铜绿假单胞菌病的诊治

以一例乌骨鸡铜绿假单胞菌病病例为例,从发病情况、临床症状、剖检变化、实验室诊断、治疗等方面对铜绿假单胞菌病做了详尽阐述,并对该病进行了讨论.     

不同能量、蛋白水平日粮对育雏期塞北乌骨鸡生长发育规律、生化指标和肠道消化酶的影响

900只1日龄塞北乌骨鸡采用5(能量)×2(蛋白)两因素配方设计,试验期6周.结果:6周龄母鸡日粮代谢能(ME)为12.65 MJ/kg,体增重最高;公鸡日粮ME为12.00 MJ/kg,体增重最高.不同能量、蛋白水平日粮对21和42日龄塞北乌骨鸡血液生化指标存在不同程度的影响,高能量日粮可显著提高血清中血糖、总胆固醇和甘油三酯的含量(P＜0.05).在ME为12.65MJ/kg、蛋白为20％的日粮,3周龄母鸡的净体质量和肝质量极显著大于公鸡(P＜0.01),消化道质量公鸡极显著大于母鸡(P＜0.01).在ME为12.65 MJ/kg、蛋白为18％的日粮母鸡的净体质量板显著小于公鸡(P＜0.01);心质量显著小于公鸡(P＜0.05);消化道质量公鸡极显著大于母鸡(P＜0.01).0～6周龄消化道发育公鸡显著快于母鸡,但消化道总长变化不明显(P＞0.05).消化道总长与消化道各段长度的回归方程的决定系数(R2)均超过了0.807,总体效果公鸡略优于母鸡.21日龄时随着日粮能量水平的提高肠道胰蛋白酶活性除ME为10.85 MJ/kg与12.00MJ/kg组差异显著外(P＜0.05),公鸡其他各组间差异均不显著;母鸡在ME为12.65MJ/kg时最高.淀粉酶扣胰脂肪酶不同能量间差异均不显著(P＞0.05).42日龄公鸡脂肪酶活性和胰蛋白酶活性都不显著(P＞0.05);母鸡从总体来看,肠道消化酶活性随着日粮能量水平的提高而增加,日粮ME为12.65 MJ/kg达到最高.     

乌骨鸡传染性法氏囊病组织灭活苗的免疫效果

<正> 乌骨鸡是我国珍稀药禽,又名竹丝鸡,同时也是驰名中外的观赏珍禽。近二年来,江苏省某乌骨鸡场的乌骨鸡,在经用鸡传染性法氏囊病弱毒疫苗饮水免疫二次的鸡群中,暴发了鸡传染性法氏囊病。二万多只乌骨鸡雏鸡先后发病,死亡率高达42%以上,造成严     

两个药肉兼用型珍稀乌骨鸡良种

乌骨鸡是我国特有的鸡种。它具有乌皮肤、乌肌肉、乌骨等乌色性状特征．历史上将它作为保健药用或观赏之用。乌骨鸡肉质鲜美．营养丰富。具有较高的滋补作用。随着市场对乌骨鸡需求的增长．乌骨鸡养殖业发展迅速．已成为我国肉鸡养殖业的重要组成部分。     

Study on Technology of Black Silkies Chicken Semen Freezing by DMA Pellet

The aim was to explore the effects of different kinds of dilution and thawing devices on the N,N-dimethylformamide (DMA) pellet frozen semen of Black Silkies. Firstly,the motility and fertility of the frozen semen thawed by different dilutions were compared;Then,the motility of the frozen semen was compared when the pellets were thawed using different tube and different number.Finally,the motility and fertility of the sperm thawed by three kinds of thawing devices (thermostat water bath,hotfunnel and hotplate ) were tested. The results showed that:①There was similar order of the sperm motility and fertility in the different dilution groups (LR > F > B > L),and there was significant difference among those groups (P < 0.05).②The motility was the best when the frozen semen was thawed with large thin-wall glass tube at 60℃.③The best temperature range of the 3 devices was different. The highest motility for thermostat water bath was 50 to 60℃ (0.51 to 0.59),and thermostat hotfunnel was 40 to 45℃ (0.42 to 0.46),while thermostat hotplate was 50 to 55℃ (0.61 to 0.63).There was no significant difference of the motility in the optimum temperature range for each device (P > 0.05).④The fertility of the different devices in their best thawing temperature was 26.91% (55℃,thermostat hotplate),23.08% (60℃, thermostat water bath), 20.93% (40℃, thermostat funnel),respectively,and there was no significant differences among those groups (P > 0.05).Therefore,the efficiency thawing condition for the Black Silkies frozen semen was the LR diluent,DMA cryoprotectant,pellet freezing,thawed in the thermostat hotplate at 54.9℃.     

乌骨鸡及其饲养

乌骨鸡是我省药肉兼用型品种．有称白风鸡．属世界稀有珍禽。     

雏乌骨鸡眼型葡萄球菌病的诊治

1998年 9月，湖南某养殖专业户饲养的 1月龄雏乌骨鸡发生一起以传染性眼炎为主要特征的葡萄球菌病，现报道如下。 1发病情况 　　该户从长沙某养殖公司购入中国黑凤乌骨鸡 1 200只，放入经改造的养鸽笼内分三层饲养，笼周围以薄膜包围，灯泡加热。为避免应激反应，未及时清除笼内鸡粪，造成粪便堆积，相对湿度达 80％，氨气刺鼻，空气污染严重。鸡群从 28日龄发病，开始时有 10余只， 1～ 2周后疫情进一步扩大，病鸡数增加到 400余只，发病率达 36％，病死率约 18％。曾用 VA、青霉素、痢特灵等治疗无效。 2症状与病变 　　鸡群发病突然，…     

种用乌骨鸡强制换羽的效果

1　前　言试验用的乌骨鸡饲养在地下室,1996年7月份以后,连降大雨和暴雨,地下室连续被淹,由于潮湿和阴冷,致使种用乌骨鸡由原来接近30%的产蛋率一下子降至10%,在后继无鸡补救的情况下,为了尽快扭转产蛋率下降这种被动局面,决定采用强制换羽技术。换羽是鸡的一种自然生理现象,一