我们都知道仔猪需要补充一些微量元素，比如铁。铁元素不足的仔猪容易出现缺铁性贫血症。但是部分给仔猪注射补铁的养猪户可能会发现效果不怎么好，出现这个问题，极有可能是以下原因引起的:
We all know that piglets need to add some trace elements, such as iron. Iron deficient anemia is prone to iron deficiency anemia. However, some pig farmers who have been given iron supplementation to piglets may find that the effect is not very good. This problem is most likely caused by the following reasons:
1、注射日龄和部位
1, day and site of injection
过早和过晚补铁都不行。过早注射与操作对出生小猪有强烈的刺激，会对身体系统造成冲击。过晚则不能与自身储备的衔接不上，易出现缺铁症状。所以建议在3日龄注射为宜，一般可以选择颈部或大腿内侧肌肉注射，个人认为大腿内侧较好。
It's not good to make up the iron too early and too late. Early injection and operation have strong stimulation to the born piglets, which will cause an impact on the body system. Too late can not be linked to their own reserves, easy to appear iron deficiency symptoms. Therefore, it is recommended that the injection should be done at 3 days of age. Generally, intramuscular injection of the neck or thigh can be done.
2、注射剂量
2. Injection dose
注射量应根据铁制剂含量和猪只大小来决定，且不可千篇一律，个头大的猪只多一点，弱小仔猪少一点。新生仔猪补铁剂量掌握在150～200mg，量小不能满足机体需求，量大则易产生较强的毒副作用。
The amount of injections should be determined according to the iron content and the size of pigs. The dosage of iron supplementation for newborn piglets is between 150 and 200mg, and the amount of iron can not meet the needs of the body.
3、泄漏问题
3. Leakage problem
一般颈部肌肉注射遗漏较多，为了防止泄漏，可用拇指拉紧注射部位的皮肤，方向为垂直于肌肉方向。在拔出针头后，放开皮肤。这样皮肤和肌肉上的小孔不在一条直线上，就会形成一个封闭。
Generally, there are more omissions in neck muscle injection. In order to prevent leakage, thumb can be used to tighten the skin of the injection site, and the direction is perpendicular to the muscle direction. After pulling out the needle, let go of the skin. So the pores in the skin and muscles are not in a straight line, and they form a closed.
4、注射次数
4. The number of injections
一般人都注射1次，建议注射2次为好。随着日龄的增长仔猪对铁需求越来越多，母乳中越来越少，仔猪在21日龄左右有一个生理上不可跨越的免疫空白期, 所以, 在15～21日龄仔猪缺铁高达200mg左右, 因此在17～18日龄需要及时有效地进行第2次补铁。
The average person is injected 1 times. It is suggested that the injection is 2 times. With the increasing demand for iron in piglets at the age of age, there is less and less in the breast milk, and there is a physiological gap in the piglets at about 21 days of age. So the iron deficiency of the piglets at the age of 15~21 days is up to 200mg, so second times of iron supplement should be done in time and effectively at the age of 17~18.
当然，如果能够根据猪的天性来补铁更好，如果没有精力条件，或是缺铁严重，那么注射时就要注意以上问题。
Of course, if it is better to supplement iron according to the nature of pig, if there is no energy condition or serious iron deficiency, we should pay attention to the above problems when injecting.
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