The Importance Of Early Feed For Chicks

monica

         Early feed intake：Moran (1996)

           Immediate 立即采食        24 h Post-hatch出壳后24小时
21 d

BW 体重            674a                       598 b

FCR 饲料转化率   1.64                         1.65  
42 d
BW                  1479                        1442

FCR                  1.94                        1.94
Mortality % 死亡率      3.8a                  7.0b

Advice:
Stimulate feed and water intake of
ASAP尽快诱食及饮水

The facts事实
Chicks at hatch are not yet mature and are still in a late embryonic phase
刚出壳的雏鸡并没有完全成熟,仍处于胚胎后期

Chicks undergo a transition stage of 24 to 48h before having access to feed
在采食饲料前,雏鸡仍需要24-48小时的过渡阶段

It is common the chicks are stressed and dehydrated 1st week mortality can be as high as 3 to 4%.
在出壳后的第一周,应激或脱水会造成3%-4%的死亡率.

Early feeding of chicks not only has a permanent effect on body weight and carcass development, but also is critical for a good development of the immune system.
早期饲喂,不仅对体重和胴体质量有长远影响,而且对良好免疫系统的发育也很关键.

The effect of feed restriction on the immune response (Afzal e.a., 1999)
        Restricted 限饲        Ad lib自由采食

Aleolair macrophages (%)
         27.1 - 42.9            75.5 - 84.9
Fagocytose-activity
         16.2 - 19.2            68.5 - 82.5
Bactericidal capacity(E.Coli)
          16.4 - 18.3           25.8 - 41.9




[ 本帖最后由 monica 于 2007-5-30 22:35 编辑 ]

矮子

楼主的翻译水平越来越好。

学习

nety

刚从德国回来应该德语进步更大！:hehes:

monica

呵呵,德语就学会了 goten morgen,还不知道写的对不对呢!:4d:

朱良

我也要学习楼主啊！
尽快把英文水平提高一点！