鸡卵球蛋白G_2和G_3位点对生产性能交互影响的研究

本试验利用新杨州鸡L、I品系,研究了鸡卵球蛋白G_2、G_3两位点在生产性能方面存在交互效应的可能性。结果表明:G_2、G_3两位点对300日龄产蛋量有显著的交互影响,基因G_2~D和基因G_3~A、G_3~B间存在正互作,基因G_2~C和基因G_3~A、G_3~B间存在负互作。G_2和G_3两位点对体重和蛋重无显著的交互影响。

鸡卵球蛋白G_2、G_3多态性与经济性状关系的研究

以新扬州鸡L和I系为材料,研究了卵球蛋白G_2、G_3基因型和经济性状—开产日龄、不同日龄体重、产蛋量及蛋重间可能存在的关系。结果表明:G_2位点基因型与体重、产蛋量和开产日龄相关,基因G_2~D优于G_2~C;G_2、G_3位点基因型间蛋重无显著差异;G_3位点对产蛋量和体重无影响。

鸡血型和卵球蛋白变异性的研究

本文分析了新扬州鸡2个品系的12个血型因子和4个卵球蛋白基因的分布频率,结果表明:两品系在群体遗传构成上存在差异;Ⅰ系的基因纯合系数较 L 系高.新扬州鸡群中具有中等频率(0.474)的抗马立克病因子(B^(21)和低频率的劣质基因 G^(?)_(2).这说明对血型和卵球蛋白变异性的检测可作为选种的辅助手段.

IgY抗体用于弓形虫感染小鼠病原学检测的研究

[目的 ]将抗弓形虫鸡卵黄抗体 (Ig Y)应用于免疫酶染色 ,探索弓形虫感染的病原学诊断途径。 [方法 ]取急性感染弓形虫小鼠的肝、脾和肾组织切片 ,用 Ig Y作为第 1抗体 ,间接酶免疫染色 ,检查细胞内弓形虫速殖子。 [结果 ]在细胞内可见呈弧形、半月形紫红色半透明的弓形虫速殖子 ,虫体完整 ,一般 1～ 4个虫体 /细胞 ,以 2～ 3个多见。 [结论 ]Ig Y抗体的间接酶免疫染色试验用于诊断急性感染弓形虫的小鼠 。

禽蛋几味

鸡蛋鸡蛋的营养成分全面而均衡,人体需要的营养素几乎都含有,是理想的天然食品。它含有蛋白质、脂肪、糖、钙、磷、铁及维生素等,所含蛋白质主要为卵蛋白和卵球蛋白,包括人体必需的八种氨基酸,有利于被吸收。其脂肪和维生素主要集中在蛋黄内,其中维生素 A、D 和维生素 B2含量很丰富。

Protection of Carassius auratus Gibelio against infection by Aeromonas hydrophila using specific immunoglobulins from hen egg yolk

Specific immunoglobulin (IgY) from egg yolk against Aeromonas hydrophila was produced by immunization of White Leghorn hens with formalin-killed whole cells of A. hydrophila. ELISA test using A. hydrophila as the coating antigen revealed that the specific antibody titer started to increase in the egg yolk at the 13th day post-immunization (P/N=2.18), reached the peak at the 56th day (P/N=13.82), and remained at high level until day 133 (P/N=7.03). The antibody was purified by saturated ammonium sulphate with a recovery rate of 63.5%. The specific IgY inhibited the growth of A. hydrophila at a concentration of 1.0 mg/ml during the 18 h incubation. Pre-treatment of polyploid gibel carps Carassius auratus Gibelio with specific IgY had a protection rate of 60% (6/10) against challenge with A. hydrophila, while none of the fishes in the control groups receiving sterile phosphate buffered saline (PBS) or non-specific IgY survived the challenge. Treatment of fishes with the specific IgY 4 h after the challenge also had lower mortality (70%, 7/10), a 30% reduction against the control PBS or non-specific IgY groups (10/10). These results indicate that specific IgY antibodies could be obtained easily from hens immunized with an inactivated A. hydrophila and could provide a novel alternative approach to control of diseases in fishes caused by this organism.

吃一个蛋

蛋,因为含有丰富的营养以及香浓的口感而备受人们欢迎。不少猫咪也喜欢吃蛋,蛋到底哪里好,又该怎么吃呢?蛋蛋好处多说起蛋,我们首先想到的营养就是蛋白质。以鸡蛋为例,每100克鸡蛋含蛋白质14.7克,主要为卵白蛋白和卵球蛋白。除此之外蛋还含有8种氨基酸,并且脂肪含量也很高,适当给猫咪吃鸡蛋,对身体是很有好处的。下面让我们来看看一个蛋到底哪部分适合猫咪,又应该如何烹饪才最好吃吧。