豫丰黄兔与新西兰白兔、哈尔滨大白兔增重比较

对豫丰黄兔与新西兰白兔、哈尔滨大白兔进行增重对比试验,结果表明：豫丰黄兔在增重、饲料转换率方面都略高于新西兰白兔,而稍低于哈尔滨大白兔（P〉0．05）。说明豫丰黄兔具有良好的生产能力和饲料转换能力。     

新西兰白兔选育研究

新西兰白兔原产于美国,由弗兰德兔、美国白兔和安哥拉兔杂交育成,是当代最著名的肉用品种之一,具有早期生长快、饲料报酬高、出栏早、繁殖性能好等优点。世界许多国家均有饲养,由于不同国家的选育目标不同,因而形成各自的特点。20世纪70年代该品种引入我国,目前许多省市均有饲养。近年来,各地外贸、畜牧部门多次从美国及其他国家引进该品种,每次引种数量从数百只到上千只不等,均     

不同形状,营养水平的饲料对新西兰幼生长的影响

研究结果表明：当日粮中含有消化能１１－１２ＫＪ／ｋｇ，蛋白质水平保持在１６％－２０％之间时，对新西兰兔生长显著影响。颗粒饲料可提高兔的抗病能力，减少疫病的发生，本试验在于研究颗粒料与粉料、不同营养水平颗粒料对新西兰幼兔生长的影响，探讨在本地区条件下，从兔适应生长的营养水平，为制定较理想的饲料配方提供依据。     

新西兰兔生长发育早期死亡规律分析

家兔生长发育早期,调节能力差,适应能力弱,容易死亡,是家兔饲养管理中的重点和难点阶段。为了给家兔早期饲养管理提供科学合理的参考信息,本研究收集了青岛康大公司新西兰种兔场同一日期出生仔兔的死亡记录,计算每天、每周和全期的死亡只数和死亡率,分析得出了新西兰兔生长发育早期两个死亡高峰期。针对这两个死亡高峰期,作者深入探讨了造成死亡高峰的原因,继而提出了一些合理的解决措施。本研究对于生产中提高新西兰兔成活率具有重要的指导意义。     

新西兰白兔在贵阳地区的繁殖力及生长速度研究

２０只母兔繁殖资料统计及１１５只仔兔体重测定表明：新西兰白兔在本地区的繁殖力强，平均胎产仔数７．９６只；仔兔早期增重快，１２０日龄平均体重２７２６ｇ，比文献记载推慢，相同体重约推迟２０天。     

豫丰黄兔与新西兰兔、哈尔滨大白兔屠宰对比测定

为检测豫丰黄兔产肉性能优劣,进行了豫丰黄兔与新西兰兔、哈尔滨大白兔的屠宰对比测定.结果表明,在相同的饲养管理条件下,豫丰黄兔的半净膛率比新西兰兔少0.2％,比哈尔滨大白兔多0.21％,但三者差异不显著(P＞0.05);全净膛率比新西兰兔少1.01％,比哈尔滨大白兔少0.51％,三者差异也不显著(P＞0.05).说明豫丰...     

新西兰白兔生长速度和净肉率的测定

新西兰白兔生长速度和净肉率的测定程园朱晓彤肖超能（贵州农学院，贵阳５５００２５）陈长飞（贵州省惠水县畜牧局）兔肉是高蛋白、低脂肪的肉食，营养丰富，有其特有的实用价值，国外称之为“美容肉”，冻兔肉是我国重要的出口商品之一。近年来兔肉的内销量也逐年上升。...     

封闭群新西兰实验兔生长及繁殖性能的研究

封闭群新西兰实验兔生长及繁殖性能的研究恽时锋（南京军区南京总医院动物实验科，南京２１０００２）新西兰兔具有生长繁殖迅速、体型适中、性情温驯、对皮肤刺激及热源等反应敏感、免疫反应性能优良等特点而被广泛应用于生物医学各领域的实验研究。１９８７年我院引进新...     

日粮添加硫酸铜对新西兰兔生产性能的影响

在日粮中添加１５０～２５０毫克／千克的铜,对猪有明显的促生长作用并改善饲料转化率。它对兔子的功效前人也有一些研究,但结论尚不一致。本课题通过探讨日粮中不同硫酸铜的添加水平对新西兰仔兔生长性能的影响,并确定饲料中硫酸铜的最适添加量。１试验材料与方法１．...     

豫丰黄兔与新西兰兔、哈白兔增重对比试验研究

豫丰黄兔与新西兰兔、哈白兔进行增重对比试验表明,豫丰黄兔在增重、饲料转换率方面都略高于新西兰兔,而稍低于哈白兔,经t检验差异不显著（P＞0.05）,说明豫丰黄兔作为一个新的培育品种,具有良好的生产能力和饲料转换能力。     

普那菊苣饲喂新西兰肉兔的效果研究

利用普那菊苣配合精料育肥新西兰肉兔,在5个精青料搭配组合中,精青料比为1:20时,只日均增重为 22.63 g,屠宰率为68.39％,经济效益为9.53元,与其他组合差异显著,是一个比较理想的搭配组合,可直接用于生产推广。     

兔生产系统中氮素转化效率的研究

研究由两个独立的分试验组成。试验1:肉兔生产中N素的流动及分配;试验2:兔毛生产系统中的N素转化效率。结果表明:兔摄入饲料N后,经消化,约占食入N 25.5％的N由粪中排出,经吸收代谢,有27.1％的N由尿排出体外,约占食入N 47.1％的N沉积在体内成为器官修补、组织增长和繁衍后代的贮备;日粮营养水平影响兔毛的生产效益,当兔采食消化能10 493.47KJ/kg,17.4％粗蛋白质日粮时,产毛效率为94.13,日均沉积在兔毛中的N占食入N的6.1％,占食入消化N 9.1％,产毛需耗料是增重耗料的10倍。可见,兔毛生产比兔肉生产更多地依赖于植物生产系统。     

苜蓿草粉对新西兰白兔生长的影响

选取28日龄断奶新西兰白兔88只,随机分为4组,对照组饲喂含花生秧粉35%的日粮,试验Ⅰ、Ⅱ、Ⅲ组分别添加15%、25%和35%的苜蓿草粉替代花生秧粉,测定28～70日龄阶段的增重、日增重,分析其经济效益。结果显示:对照组和试验Ⅰ、Ⅱ、Ⅲ组兔28～70日龄日增重分别为31.82g、33.71g、38.23g和29.26g,试验Ⅰ、Ⅱ、Ⅲ组只均增重和日增重均与对照组存在显著或极显著的差异(P<0.05或P<0.01);试验Ⅰ、Ⅱ和Ⅲ组的料重比分别比对照组下降6.14%、7.31%、11.40%;试验Ⅰ、Ⅱ和Ⅲ组的死亡率较对照组分别降低4.54%、9.09%、18.18%;试验Ⅰ、Ⅱ和Ⅲ组只均获利分别比对照组提高9.41%、14.48%、31.85%。     

新西兰白兔屠宰率的通径分析

选用代表循环、呼吸、消化、免疫等生理系统的内脏器官，以各内脏器官与胴体重的比率作为代表指标，对它们与屠宰率进行了通径分析。结果表明，心重率和脾重率是影响屠宰率的主要内脏器官性状，其他各器官主要是通过心脏来对屠宰率产生影响的。     

Glaucoma in a New Zealand White Rabbit Fed High-cholesterol Diet

Goniodysgenesis, malformation of the filtration angle, was observed in a New Zealand white rabbit supplied with 100 g/day rabbit chow containing 0.2% cholesterol for 10 months. Histopathology revealed cupping of the optic disc, atrophy of the retina and hyalinization of the ciliary body in the bilateral eyeballs. These findings corresponded with histopathological features caused by glaucoma. On the basis of these findings, we diagnosed this lesion as glaucoma, and classified it as primary glaucoma because of the presence of developmental defects of the filtration angle. In this case, hypercholesterolemia-induced changes, such as aggregation of lipid-laden macrophages and cholesterin clefts in the sclera or choroid, might cause deterioration of the lesions in glaucoma.     

Postnatal Osteological Development of the Cervical Vertebrae in the New Zealand White Rabbit

This study used the New Zealand White rabbit to reveal the normal ossification development of the cervical component of the spine. Preserved cervical vertebrae representing five different age periods, each period including five individuals and the total number of animals being 25, were fixed in 3.5% formaldehyde solution and 95% ethanol, followed by a pure acetone bath. The materials were then stained with an alcian blue–alizarin red combination. The ossification centres were identical over time, and the pattern of fusion among them was homogenous and constant in appearance. There were three different primary ossification centres in all the cervical vertebrae except the axis, which showed four primary ossification centres. The dorsally located primary ossification centres later formed the pedicles of the neural arches, while the ventral centres constituted the body of each vertebra. The study was terminated at 10 weeks of age because the ossification centres observed in the cervical vertebrae completed their fusion and no further ossification centres were observed.     

Postnatal Osteological Development of the Hyoid Bone in the New Zealand White Rabbit

This study augments knowledge of bone growth by observing the development of the hyoid bone in the New Zealand White rabbit. Preserved hyoid bones representing five different age periods, each period including five individuals and the total number of animals being 25, were fixed in 3.5% formaldehyde solution and 95% ethanol, followed by a pure acetone bath. They were then stained with an alcian blue–alizarin red combination. The mode of bone formation was intracartilaginous type ossification. While the basihyoideum and thyrohyoideum were observed to start ossifying first at prenatal stage, indicating that they are the main skeletal structures of the hyoid apparatus, the ceratohyoideum and lingual process began to ossify in the second and third periods. The separately occurring primary ossification centres fused completely among themselves in the fifth period. Because no further ossification centers were observed and the ossified parts continued the development and growth, the research was terminated after 10 weeks of age.     

不同营养水平对肉兔生产性能的影响

采用U6 (63 ×3)均匀设计方案,选择35日龄断奶新西兰白兔144只,进行为期6 周的饲养试验,主要探讨了消化能、粗蛋白、粗纤维等3 个因素及3 个水平对肉兔增重、饲料消耗、料肉比等指标的影响。结果表明,最优组合为消化能9.62MJ/kg、粗蛋白13.5% 、粗纤维17% ,能量是肉兔采食和生长的限制性因素。     

品种,性别和日龄对肉兔饲料转化率的影响

试验选用大耳白，加里福尼亚兔和比利时兔，通过对试验兔７５－１５０日龄生长阶段饲料转化率的测定，结果表明：日龄是影响试兔饲料转化率的主要限制性因素（Ｐ＜０．０１）。由此得出：要提高商品兔的生产效率，必须注重兔的早期饲养管理，使之在较短的时间同进入生长高峰，加快周转，而饲养“长寿兔”将使商品兔生产的经济效益显著降低。