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四川白鹅、皖西白鹅、朗德鹅、豁眼鹅及其杂种肉用性能的研究 总被引:3,自引:0,他引:3
本试验以四川白鹅(S)为母本,分别与皖西白鹅(K)、朗德鹅(L)、豁眼鹅(H)杂交,组成KS、LS、HS三个杂交组合和SS、KK、LL、HH四个条本组合。测定在放牧补词条件下,肉鹅0-12周龄的增重速度;舍饲鹅60、70日龄及放牧70、84日龄的屠宰性能。结果表明:相同组合的生长速度放牧补饲优于全舍饲.屠宰结果:60日龄的屠宰率明显低于70日龄,而84日龄与70日龄相比,增加不多;70日龄同组合不同饲养方式的屠宰率虽然有差异,但不显著(P>0.05)。体重杂交优势最明显的为放牧HS组,其次LS,KS未表现出体重杂种优势。本试验表明,参试各组9-10周龄为最佳上市期,以四川白鹅为母本的名杂交组同亲本SS比较提高了胸腿肌率。本试验结果还讨论了有关肉鹅育种和营养问题。 相似文献
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近年来,养鹅业蓬勃发展,为培育出生长快、产肉性能好的肉鹅品种,本试验引进大型鹅种朗德鹅与昌图豁鹅进行杂交,通过饲养试验测定其后代的生长性能,结果表明杂交鹅可以显著提高生长性能,增加经济效益,此项技术可以在生产中推广应用。 相似文献
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张超 《农村实用科技信息》2009,(8):30-30
一、选择适应当地环境条件的品种。鹅的品种较多,若以产肉为主应选用饲料消耗少、生长迅速、产肉率高的中型鹅种,如浙东白鹅、太湖鹅等;若以产肥肝为主,应选择从法国引进的朗德鹅(肥肝平均重1000~1300克),广东的狮头鹅(肥肝平均重960.2克)和黑龙江的雅鲁肝鹅(肥肝平均重750克);若以产蛋为主,应选用原产山东莱阳地区的“豁眼鹅”(年产蛋量可达120130枚)及江西的上饶白鹅等;若以产羽绒为主应选择白色产羽绒量多的鹅种,如太湖鹅、雅鲁肝鹅、皖西白鹅等。 相似文献
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1、品种选择
品种是影响肥肝生产的重要因素之一.不同鹅品种肥肝性能差异很大,不是所有鹅都能生产肥肝.比如我国的小型鹅种以产蛋为主而生产肥肝性能很差,不宜选用.可用于肥肝生产的有大型鹅种如狮头鹅,平均肥肝重600克,最大达1.4千克;中型鹅溆浦鹅,平均肥肝重600克,最大达1.33千克;世界著名的肥肝专用种法国朗德鹅,平均肥肝重836克,最大1.78千克;法国的图卢兹鹅又叫茜蒙鹅平均肥肝重1~1.2千克,最大1.8千克. 相似文献
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利用杂种优势生产鹅肥肝 总被引:1,自引:0,他引:1
本文用狮头鹅一代杂种和湖南溆浦灰鹅、白鹅作父本与吉林省本地鹅杂交筛选肥肝鹅的最优杂交组合。4个杂交组合试验结果表明:(狮头鹅一代杂种)F_1×(狮头鹅一代杂种)F_2,溆浦灰鹅×本地鹅的2个杂交组合,肥肝水平显著高于对照组(本地×本地)(P<0.01);F_1×F_1组合显著高于溆浦白鹅×本地;(P<0.05);F_1×本地与本地×本地间差异不显著。 相似文献
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本试验以四川白鹅为母本,分别与皖西白鹅、朗德鹅、豁眼鹅杂交,组成KS、LS、HS三个杂交组合和SS、KK、LL、HH四个亲本组合。测定在放牧补饲条件下,肉鹅0-12周龄的增重速度;舍饲鹅60、70日龄及放牧70、84日龄的屠宰性能。 相似文献
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Effects of Immunization Against Inhibin on Egg-Laying Performance in Magang and Landaise Geese 总被引:1,自引:0,他引:1
HUANG Yun-mao LI Min-yi SHI Zhen-dan BAN Jin QIN Yi-ping 《中国农业科学(英文版)》2007,6(3):355-360
This study aimed to improve egg-laying performance in incubating Magang geese of Guangdong origin and Landaise geese of French origin. In experiment 1, 50 adults, egg-laying Magang geese were inoculated intramuscularly (i.m.) on days 0, 22, and 45 with 1 mL of immunogen containing 1 mg of recombinant chicken inhibin fusion protein. Immunization significantly increased blood antibody titers against inhibin fusion protein, but did not affect the egg-laying performance within 10 days after the first inoculation. From day 15, the egg-laying rate in inhibin-immunized group increased and was significantly higher than the values of control geese from day 40 to 55. However, the reverse was true from day 55 to 75 when more immunized geese developed incubation. In the entire 120 days of the experiment, the immunized geese laid 17.3 eggs in contrast to 16.4 eggs laid by the control geese. From day 30 till the end of the experiment, weight of eggs in the control geese was significantly greater than that in inhibin-immunized birds. In experiment 2, 40 Landaise geese were immunized against inhibin, as described in experiment 1. These geese laid 9.0 eggs on average in contrast to 7.3 eggs laid by nonimmunized control geese over 90 days of egg laying. The above results demonstrated that immunization against recombinant chicken inhibin fusion protein improved egg-laying performance in geese, and the increment was higher in nonincubating geese. 相似文献
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LIU Xiang-you HE Rui-guo HUANG Chou-shen LI Xiang ZHOU Qi-an WANG Cheng ZHAO Na ZHOU Shi-xia 《中国农业科学(英文版)》2006,5(5):390-396
This experiment studied hepatic lipogenesis associated with biochemical changes in overfed Landaise Geese and China Xupu geese. Twenty healthy male Landaise geese and 20 healthy male Xupu geese, hatched on the same day under the same feeding conditions, were selected as experimental animals. The animals were divided into two groups and each breed served as an experimental group. Per goose of per experimental group served for a repeat. Brown rice was selected as test diet. After overfeeding for 21 d and then slaughtering, the biochemical changes of hepatic lipogenesis in the genetic susceptibility to fatty liver were evaluated. These results showed that (1) the weight of fatty liver of the two breeds of geese were 801 and 375 g (P〈0.05), respectively. There were no differences on the abdominal fat pat, filet total and filet pectoralis major in the two breeds experimental of the geese group (P〈0.05) and no difference on body and filet skin plus subcutaneous adipose tissue (P〉0.05) was found; (2) in these two breeds of geese, there were no differences on very-lowdensity lipoprotein (VLDL), cholesteryl esters (CE) (P〈0.05), free cholesterol (FC), triglycerides (TG), phospholipids (PL) and protein (P 〈 0.05); (3) there were no differences on activities of malic enzyme (ME), glucose-6-phosphatedehydrogenase (G6PDH), acetyl-CoA-carboxylas (ACX), fatty acid synthase (FAS), and mRNA level of ME in the two experimental breeds of geese groups (P 〈0.05); (4) test in Landaise geese group showed that there was no significant correlation with the specific enzymatic activities, while in Xupu geese group, the liver weight was negatively correlated to the specific activity of ACX and positively to that of ME; (5) in these overfed geese, ME activity appeared to be a major factor involved in the genetic susceptibility to hepatic steatosis and it determined the hepatic lipogenesis capacity. 相似文献
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测定了10只安本一代,10只安中一代,8只本地羯羊的生长发育和产肉性能。结果:安木一代和安中一代的12月龄体重分别为30.40±2.89kg和28.70±2.93kg,比本地羯羊的23.00±2.59kg高出32.17%和24.78%;屠宰率测定结果:安本一代和安中一代的平均胴体重为12.47±1.54kg和11.93±1.48kg,比本地山羊的8.43±1.29kg分别高出47.92%和41.52%;净肉重分别为9.80±1.07kg和9.42±1.19kg,比本地山羊的6.38±1.25kg分别高53.61%和47.65%。 相似文献
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在16只杂交(川白×太湖)成年鹅上安装长久性胰—十二指肠返流式瘘管,于自然状态下,收集纯净的胰液并分析其中酶的活性.鹅在试验期夜间(20:00至翌日8:00)禁食,自由饮水,连续收集其胰液.结果表明:鹅的胰液呈不规则连续性分泌,白天速率为(93.59±15.57)μL·h-1,夜间为(42.93±4.50)μL·h-1,平均68.15μL·h-1;分泌量白天占68.55%,夜间占31.45%.夜间胰液中蛋白酶、脂肪酶和淀粉酶活性分别较白天低44.46%(P<0.05)、22.48%(P<0.05)和11.67%(P>0.05);同样,胰蛋白酶、脂肪酶和淀粉酶夜间的总活性也显著低于白天,分别低33.74%(P<0.01)、43.69%(P<0.01)和59.44%(P<0.01).表明鹅胰液的分泌与其消化功能相适应,白天机体受到多种的神经和体液因素调节,消化活动相对较强,因此其分泌和消化酶的产生量均较大. 相似文献
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用5个粳型光敏核不育系和5个恢复系配制24个组合(缺失一个组合),单行种植,重复3,,按NCⅡ设计,估算配合力和有关方差,并按逐步剔除法作通径分析.结果表明,对单株产量贡献大的性状依次为每穗实粒数、单株有效穗、千粒重和结实率.就一般配合力而言,_(7001)S、_(6085)S、轮回422的单株谷重,每穗实粒数的一般配合力效应最高,所配组合的产量及实粒数也高.M_(105)S、皖恢9号的有效穗一般配合力及特殊配合力方差均高,所配组合易获多穗._(5088)S、M_(105)S、4859所配组合的千粒重高.就特殊配合力来说,单株产量特殊配合力效应最高的组合为5047×皖恢9号,其次是M_(105)S×培C_(115),结实率的特殊配合效应最高的为_(6085)S×轮回422和_(7001)S×皖恢9号.从组合产量优势看,有22个组合超过鄂宜105,5个组合超过当优C堡,其中2个是_(7001)S配组,3个是轮回422配组的组合. 相似文献
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各国棉花育种工作都在开展野生二倍体棉种的利用问题。试验用二倍体亚洲棉G。arboreum 2n(2x)=26,染色体组A_2,与野生比克氏棉G. bickii, 2n(2x)=26,染色体组G杂交,获得异源二倍体杂种。因二者亲缘关系最远,杂种高度不育。对A_2×GF_1PMC减数分裂观察,M_2染色体大都不配对,二价体变幅1—6对,并出现三价体,染色体构型为1.64Ⅰ+4.0Ⅱ+0.4Ⅲ。平均交叉频率为1.07个。由于四分体发育不正常,形成畸形败育花粉,导致杂种F_1高度不育。对A_2×G F_1进行染色体加倍,合成异源四倍体,观察F_2PMC减数分裂时,染色体数为52条。MI,大都配对,交叉频率为1.83,大多数为环状二价体。染色体构型为:2.75Ⅰ+24.5Ⅱ+0.25Ⅲ。其中完全配对成26个二价体的细胞数占30%。后期Ⅰ,染色体平均分配,两级各有26条,形成正常的四分体,花粉生活力达89%杂种植株育性恢复,每株结铃平均为33个,每铃种子平均9.1粒,为人工合成异源四倍体新种质 相似文献
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杂交水稻育性基因型初探 总被引:6,自引:2,他引:4
本试验通过对两组不完全双列杂交(6×5和4×3)组合的F_2、F_3及B_1等群体的育性分离情况的观察和分析,初步认为杂交水稻育性茎因型因组合不同而不尽一致。有些组合只具有隐性不育基因,另一些组合则既具有隐性不育基因,也具有显性不育基因,显性可育基因对显性不育基因表现出遮盖作用。隐性不育基因数在组合问的变异主要决定于不育系,而显性不育基因数的变异则主要决定于恢复系。作用育性基因数和显性不育基因数与F_1结实率呈显著负相关。本文还提出了根据已知育性基因型求F_2、B_1和F_3等群体的理论不育株率的公式,以及根据各群体的不育株数和样本容量估算其育性基因型的方法。 相似文献
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吉林省本地鹅和杂交鹅的产肉性能及胴体分割的研究 总被引:1,自引:0,他引:1
:随机选择刚出生的本地鹅雏和杂交鹅雏各 130只 ,采用放牧加补饲的方式育肥至 6 3日龄 ,进行屠宰测定。结果本地鹅平均活重 32 87 50g ,胴体重 2 854 10g ,半净膛率 80 18% ,全净膛率 73 76 % ,头重 12 9 3g ,颈重 2 4 3 2g ,翅重 157 6g ;杂交鹅平均活重 3482 6 9g ,胴体重 2 96 1 92g ,半净膛率 78 6 3% ,全净膛率 72 6 % ,头重 136 2g ,颈重 2 57 5g ,翅重 16 6 2g。表明该方式育肥效果显著 ,且杂交鹅优于本地鹅。通过与全放牧方式育肥的同龄本地鹅对比 ,说明品种、性别、育肥方式对育肥效果均有影响 相似文献