欧美成人免费观看bbb,五月婷婷丁香在线,18女人毛片

News title：The influence of temperature on pig raising

In modern pig industry, even if all kinds of cold and heatstroke prevention designs are adopted in pig house design and construction, it is still not enough to obtain the appropriate temperature of pi...

2017-10-20

News title：How to improve the utilization efficiency of animal feed

The first task of pig farm is to improve the economic efficiency and production efficiency. It is an important measure to select the advanced and economic pig raising equipment which is suitable for t...

2017-10-17

News title：How to nurse sow delivery room in pig farm

The application of modern technology and modern management measures in pig raising equipment can make pig industry produce in an industrial way, provide suitable conditions for the growth and developm...

2017-10-16

News title：Advantages and automatic control of temperature regulating equipment of pig raising equipment

With the development of the pig industry, the traditional single circle, individual feeding has not been able to adapt to the development of society, can not drive the improvement of productivity, peo...

2017-10-15

News title：There is a reason for the rapid development of pig raising equipment

Pig raising equipment plays an important role in large-scale pig raising. The reasonable application of the equipment can create a comfortable and safe growth environment for pigs, reduce external adv...

2017-10-13

News title：It is necessary to keep the pig equipment clean

In the past, the traditional family pig breeding equipment used to raise whatever kind of pig it had, but it didn't pay much attention to the breeding of excellent breeding pigs. However, in order to ...

2017-10-12

News title：Safety tips for prevention of swine disease

豬病的種類很多，有時候發(fā)病率和死亡率很高，甚至涉波及全群，嚴(yán)重影響?zhàn)B豬業(yè)的發(fā)展，給養(yǎng)殖戶造成巨大的經(jīng)濟(jì)損失。為了預(yù)防和消滅豬的疫病，保護(hù)豬群正常生產(chǎn)，促進(jìn)養(yǎng)豬業(yè)的發(fā)展，保證人民的健康，必須堅持預(yù)防為主的方針，配置合理使用養(yǎng)豬設(shè)備 2017-10-11

News title：What should be paid attention to when raising pigs in autumn

At present, it has entered the autumn. The management of pig raising in autumn is mainly for preparing for winter production, reducing the incidence rate of pigs, and improving the economic benefits o...
2017-10-10

All 28 Pages Current24/28Pages [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28]

国产女人18毛片水,成人免费淫片免费观看,日韩精品久久不卡中文字幕,美女一级毛片直播,欧美综合色区,国产精品久久久久aaaa,亚洲日韩精品欧美一区二区