80周龄蛋鸡产蛋数与蛋品质性状的相关性分析

为了给蛋鸡产蛋数和蛋品质性状选育改良提供依据,根据80周龄产蛋数量将668只褐壳纯系蛋鸡分为4组,分析了80周龄产蛋数量与36周龄、72周龄和80周龄蛋品质性状间的相关性以及不同组之间蛋品质性状的差异。结果表明:80周龄产蛋数量与72周龄、80周龄蛋壳厚度呈极显著负相关(P<0.01),与72周龄哈氏单位呈极显著正相关(P<0.01),与其余周龄蛋壳颜色、蛋壳强度和哈氏单位相关性均不显著(P>0.05);个别组间72周龄和80周龄蛋壳厚度差异显著(P<0.05),但是4组蛋鸡各周龄蛋壳强度、蛋壳颜色和哈氏单位均差异不显著(P>0.05)。说明蛋鸡的产蛋数量与蛋品质相关性较低,对蛋鸡进行提高产蛋数量的持续选育不会影响鸡蛋品质。

瑶鸡产蛋规律的研究与分析

为了解瑶鸡个体产蛋规律,本试验选择3024只24周龄瑶鸡为研究对象,对其连续61天的产蛋情况进行了统计分析,从就巢性、产蛋间隔、连产天数、抱窝性等几个影响因素进行了研究。结果显示,在统计期间,母鸡平均个体产蛋量为39.25±13.36个,最高个体产蛋数为61个,最低个体产蛋数为0个,平均产蛋率为64.34%,产蛋率大于67.21%的个体占59.49%;相关性分析表明,瑶鸡产蛋量与就巢性呈现极显著负相关(p<0.01),与连续产蛋天数呈现极显著正相关(p<0.01),与产蛋间隔呈现极显著负相关(p<0.01),瑶鸡产蛋数与抱窝天数呈现极显著负相关(p<0.01),而与抱窝次数差异不显著(p>0.05)。

蛋鸡在产蛋高峰期的营养需求

蛋鸡在产蛋的不同时期对营养的需求不相同,在产蛋高峰期的营养供给水平会直接影响蛋鸡当期以及全期的产蛋数量,因此必须要对蛋鸡产蛋高峰期的营养需求进行分析,及时为其提供充足的营养,确保蛋鸡的产蛋数量。

蛋鸡第二期产蛋的利用技术

蛋鸡第二期的产蛋率和产蛋数量均较前期稍低一些,但可节省大量购买雏鸡、育雏的费用开支和减少麻烦。且第二期蛋鸡抗病力较强,死亡率较低.喂养好了,料、蛋比差不多少。综合统算,经济效益还是较可观的。现将蛋鸡第二产蛋期的利用技术介绍如下:1.强制换羽早产蛋强制换羽比自然换羽可提前3～4周产蛋。方法有两种:一是饥饿法:鸡的产蛋率下降到30%左右时,停止人工补充光照,停料7天左右,但不停水;以后9～10天内每只鸡每天给料30～40克;然后自由采食蛋鸡饲料。此法换羽掌握鸡体失重20%～30%为宜。二是化学法:鸡群中有20%～30%的鸡脱毛时,在鸡饲料内加入2%～3%的氧化锌(每只鸡3.0～4.5克),连续喂10天,不停料,不停水,光照正常。以上两法换羽效果都较好。2.增加蛋置多卖钱第二产蛋期鸡的体重越大,产的蛋个也就越大。因此。

强制换羽提高蛋鸡产蛋量

强制换羽提高蛋鸡产蛋量黄永爵，裴万赢，杜耀辉（洛阳市农牧局４７１０００）强制换羽就是通过人工采取措施，强制母鸡迅速换羽，而长出新羽，再刺激其产蛋的过程。通过强制换羽，可使产蛋鸡延长产蛋期，提高单位母鸡产蛋数量，降低饲养成本。特别是饲料价格和雏鸡价格都...

蛋鸡强制换羽后的饲养管理

蛋鸡强制换羽比自然换羽不仅能减少换羽时间,提高整齐度,而且还节省饲料。换羽后的蛋鸡第二产蛋期的产蛋率和产蛋数量虽比前个产蛋期较低一些,但可节省购买鸡苗开支和育雏育成鸡的费用,以降低养鸡成本。1.精心管理蛋鸡强制换羽前夕,应将低产。

鸵鸟养殖及市场

鸵鸟是世界上现存的最大的鸟。该鸟全长1.8m,头高2.6m,体重达130kg以上,年产蛋数量60～80枚,蛋重1350～1600g。成鸟24～26月龄性成熟,有效生产年限可达50年。近年来,我国引进鸵鸟试养成功。且具有较好的前景,这是因为: 1

鸡贫血病毒灭活苗的免疫试验

西班牙学者用20周龄的110只母鸡和110只公鸡平均分成A、B两组,其中A组皮下注射0.5ml鸡贫血病毒灭活苗,B组对照,从而检测该疫苗的保护效果。结果两组的发病。

Assimilating efficiency of soil nutrition of Phalaris arundinacea L.

Phalaris arundinacea L. is fine perennial herbage of Gramineae. Eight treatments including N, P, K, NP, NK, NPK, PK and controls were done for studying its absorbing efficiency of soil nutrition. At tillering stage, the coefficient of absorbing and utilizing of N, P, and K from soil and fertilizer were analyzed according to M.K. Kaeomobk抯 formula and the contents of crude protein and fat were also measured. The yields of fresh crop, hay and seed were measured at ripening stage. For N absorbing coefficient of Ph. arundinacea from soil (Kn%), the composition PK treatment is best (12.36%) and K treatment is worse, while for N absorbing coefficient from fertilizer (Ky%), all the treatments are higher than control but the composition NPK treatment presented the highest (14.78%). For the absorbing coefficient of P from soil (Kn%), composition NK treatment is highest (19.30%), but K treatment was lower than control, while for that of P from fertilizer (Ky%), all the treatment were higher than control but the composition NP treatment showed the highest (19.52%). As to K absorbing coefficient from soil (Kn%), NP treatment is the best (19.2%) and single P treatment is worst, while for that (Ky%) of K from fertilizer the composition NPK treatment was best (28.44%). As concerns treatments for the outputs of fresh and dry crop, the composition NP treatment was best and all the treatment were higher than control. The composition NK treatment produced highest yield of seed and highest content of crude protein as compared to other treatments. For content of crude fat, the compositions NK and N treatments are best. The experiment indicates that application of fertilizer at proper proportions could increase the yield of Ph. Arundinacea and raise the utilizing efficiency of nourishment element from soil and fertilizer.

笔者诊察病鸡的体会

经多年千百次的反复实践验证,笔者的看、摸、听、嗅诊察病鸡是行之有效的,但是如何做到更快捷、更准确、效果更好,这除善于把看、摸、听、嗅诊察到病态反应进行深入细致,综合分析,判断,找出病的因果外。笔者认为光从这些病态反应去诊察是不够的,要更科学更准确做好防病,治病那就要做到以下几点: 1.要坚持一日不断长久对鸡的饲养相关一切情况做好记录,如鸡的日龄,体重,采食,产蛋数量,产蛋率,蛋重,蛋的质量,死淘,舍温等; 饲料的变化,接种疫苗等等;