推荐回答(1个)
肉用型鸭有北京鸭、樱桃谷鸭、狄高鸭、丽佳鸭等,这些鸭体重大而丰满,具有生长快、饲料转化率高、繁殖率高、适应性强等优点。瘤头鸭也是肉用型鸭、肉质特别好。现将它们的外貌特征和生产性能分别简介如下:
(1)北京鸭 原产地在北京,是世界最优良的肉鸭品种,现已遍及世界各地。北京鸭头大,颈粗、中等长;体躯长方形,前胸突出,背宽平,胸骨长而直,两翅较小,紧附于体躯两侧;尾羽短而上翘,公鸭尾部有2~4根向背部弯曲的性指羽;腿粗短、蹼宽厚;母鸭腹部丰满。北京鸭全身羽毛白色并稍带乳黄色光泽,喙、胫、蹼桔黄或桔红色,眼的虹彩蓝灰色。北京鸭不仅产肉性能优良、而且产蛋量高,年产蛋量在200枚以上,管理细致的母本品系年产蛋量高达240枚,蛋重90克左右,蛋壳白色。性成熟期180日龄左右,在公母配种比例为1∶5的情况下种蛋受精率90%以上,受精蛋孵化率80%~90%。经过选育的Z1系初生雏鸭体重63~65克,3周龄1.05~1.10千克,7周龄2.9千克以上,每公斤增重耗混合饲料3.2千克。系间杂交鸭7周龄3千克以上,每公斤增重耗饲料3.0~3.1千克。北京鸭有较好的肥肝性能,填肥2~3周,肥肝重可达300~400克。
(2)樱桃谷鸭 是英国樱桃谷农场引进我国的北京鸭和埃里斯伯里鸭为亲本,杂交选育而成的配套系鸭种。我国先后从该场引进L2、SM、配套系种鸭。广东省于1980年引进L2商品代进行试养,次年引进L2父母代,1985年四川省引进该场培育的SM超级肉鸭父母代,1992年四川省绵阳市畜牧食品局又引进SM祖代种鸭,并与樱桃谷公司合资兴办“四川绵英种鸭有限公司,建立了樱桃谷SM超级肉鸭祖代种鸭场,向国内外提供父母代种鸭。
樱桃谷肉鸭的外型与北京鸭大致相同,相比之下体躯要稍宽一些。公鸭头较大,颈粗短,脚较短;成年公鸭全身羽毛白色,个别鸭有零星黑色杂羽;喙橙黄色,少数肉红色;胫蹼桔红色。
樱桃谷SM超级肉鸭父母代种鸭26周龄开产,开产时体重3.1千克,每只母鸭40周产蛋量220枚左右,蛋重80~85克,蛋壳大多为白色、少数淡蓝色,产蛋40周每只母鸭可孵鸭苗178只左右。商品代肉鸭49日龄活重3.3千克,全净膛屠宰率72.55%,料肉比2.6∶1。
(3)狄高鸭 是澳大利亚狄高公司引进北京鸭和北京鸭与爱斯勃雷鸭的杂交母鸭配种而得到的。外型与北京鸭相似。父母代鸭26周龄开产,母鸭开产体重2.85公斤,年产蛋230枚左右,平均蛋重88克,蛋壳白色。在公母配种比例为1∶5的情况下,受精率90%以上,受精蛋孵化率85%左右,每只母鸭年提供商品代鸭苗160只左右,商品代肉鸭49日龄活重3.0千克,全净膛屠宰率(连头脚)79.7%,料肉比2.9~3.0∶1。
(4)丽佳鸭 是丹麦培育的肉鸭品种,母鸭25周龄产蛋率达5%,产蛋高峰期可达87%。平均每只母鸭40周产蛋206枚,蛋重85克。商品代肉鸭7周龄体重2.91千克,料肉比2.95∶1。
(5)瘤头鸭 又称麝香鸭、中国俗称番鸭。原产于南美洲和中美洲热带地区,国外以法国养得最多,占养鸭总数的80%左右,此外匈牙利也养得不少。国内福建省有较长的饲养历史,此外东南沿海各省均有饲养。最近,四川省从法国克里莫公司引进克里莫瘤头鸭。
瘤头鸭的体型前宽后窄,体躯与地面呈水平状态,喙较短而窄,其基部和眼周围有红色或黑色皮瘤,公鸭比母鸭发达。头顶有一排纵向羽毛,受刺激时头部羽毛勃起。头较大、颈粗短,胸部宽而平,腹部不发达,尾较长;主翼羽长达尾部,有一定飞翔能力,腿短而粗壮。公鸭在繁殖季节散发出麝香气味,故又叫麝香鸭。瘤头鸭的羽色以黑白两种颜色为主。黑色瘤头鸭的羽毛具有墨绿色;喙肉红色有黑斑;皮瘤黑红色;眼的虹彩浅黄色;胫、蹼多为黑色。白羽瘤头鸭的喙粉红色,皮瘤鲜红色,眼的虹彩浅灰色;胫、蹼黄色。母鸭180~210天开产,年产蛋量80~120枚,高产的可达150~160枚,蛋重70~80克,蛋壳白色。公母配种比例1∶6~8时,受精率85~94%,受精蛋孵化率80%~85%,孵化期35天。公番鸭与母番鸭体重差异较大,8周龄时,前者体重3.0千克,后者仅2.0千克,相差50%,10周龄的平均体重2.86千克(公番鸭3.55千克、母番鸭2.17千克)料肉比3.09∶1。10周龄以后生长速度缓慢。
用公瘤头鸭与母家鸭杂交生产不同属间的远缘杂交鸭,称半番鸭或骡鸭。半番鸭生长迅速,饲料转化率高,肉质好、抗逆性强。用公瘤头鸭与母北京鸭杂交的半番鸭,8周龄平均体重2.16千克。瘤头鸭胸腿肌发达,占全净膛屠宰的30%左右,肌肉蛋白质含量高达33%~34%。瘤头鸭肥肝性能也好,10~12周龄的瘤头鸭填饲2~3周,肥肝重达300~353克。瘤头鸭较家鸭耐填饲,残鸭比例少,肥肝质量好。由于家鸭的繁殖能力比瘤头鸭强,与瘤头鸭杂交可获得比瘤头鸭多的后代,因此半番鸭已广泛应用于肥肝生产。
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