成人午夜性a一级毛片免费看_精品热视频国产色噜噜网_717午夜电影院韩国三级_久久综合九色综合狠狠97_被三个男人绑着躁我好爽_久草免费在线观看_国产SM主人调教女M视频_亚洲精品网站66_欧美牲交欧美牲交ⅴ另类_小南开襟乳液狂飙网站

At present, there are three kinds of feed types for sows: powder feed, liquid feed and pellet feed. Powder materials can be divided into two types: coarse powder (simple mixture) and commercial fine powder. Sows with powder or pellet feed, which cost-effective? In this paper, the problems of sow nutrition physiology and production practice are analyzed.

母豬用粉料還是顆粒料好，哪個性價比高？

Sows with powder or pellet feed, which cost-effective?

1、母豬對粉狀料的采食量比顆粒料的采食量大

1. The feed intake of sows on powdery feed was higher than that on pellet feed

這個事實背后的原因主要是母豬有著發(fā)達的牙齒、靈活的舌頭和碩大的口腔，粉狀料對其味覺、嗅覺的刺激使得頭期消化液的分泌較顆粒料量大。唾液淀粉酶對粉料的作用也較顆粒料更為迅速。

The main reason behind this fact is that sows have developed teeth, flexible tongue and large mouth. The stimulation of taste and smell by powdery materials makes the secretion of digestive juice in the first stage more than that of granular materials. The effect of salivary amylase on powder was more rapid than that of granular material.

因此母豬對粉狀料的食欲更強。在野生狀態(tài)下，母豬的食物范圍相當廣泛，包括塊根塊莖類、青綠飼料、谷物籽實、小動物等，成熟的谷物籽實很硬，所以顆粒狀的食物并不是母豬。并且，豬有搶食的習(xí)慣，一次大量進食顆粒料的后果很嚴重：未經(jīng)充分咀嚼的顆料在消化道存留的時間很長，頭期消化液分泌不足也導(dǎo)致消化道蠕動減緩。特別是在圍產(chǎn)期，母豬食欲下降和便秘的出現(xiàn)就成了必然。

Therefore, sows have a stronger appetite for powdery materials. In the wild, sows have a wide range of food, including tubers and tubers, green feed, grain seeds, small animals, etc. mature grain seeds are very hard, so granular food is not the first choice for sows. In addition, pigs have the habit of grabbing food, and the consequences of eating a large amount of granular materials at a time are very serious: the grains that are not fully chewed remain in the digestive tract for a long time, and the insufficient secretion of digestive juice in the first stage also leads to the slowing down of gastrointestinal peristalsis. Especially in the perinatal period, the loss of appetite and constipation of sows become inevitable.

2、粉狀料較顆粒更“新鮮”

2. Powder is more "fresh" than particles

眾所周知，粉狀料不易保存，在北方，夏季庫存時間也不能超過15天，因其開包后與空氣中的氧氣接觸面積更大，更易被氧化;而顆粒料則不同，經(jīng)過擠壓之后與空氣接觸面積減小，因而可放置更長時間。就現(xiàn)場應(yīng)用效果來說，3天以內(nèi)生產(chǎn)的粉狀料更有優(yōu)勢(中間環(huán)節(jié)越少，對母豬來說越好)。

As we all know, powdery materials are not easy to be preserved. In the north, the storage time in summer can not exceed 15 days, because the contact area between powder materials and oxygen in the air is larger after unpacking, and it is easier to be oxidized; but the granular materials are different. After extrusion, the contact area with air is reduced, so it can be stored for a longer time. In terms of field application effect, the powder produced within 3 days is more advantageous (the less intermediate links, the better for sows).

3、粉狀料較顆粒料適應(yīng)性更強

3. The adaptability of powder material is stronger than that of granular material

對于育肥豬，物料粉得越細，消化率越高，在保證其不得消化道潰瘍的前提下，2.0-3.0毫米的微粒。母豬則不同，尤其是3胎以內(nèi)的母豬，其飼料既然保證其一定的瘦肉生長速度，還要鍛煉其胃腸功能，使得其高產(chǎn)仔率的遺傳優(yōu)勢得以發(fā)揮。

For fattening pigs, the finer the material powder is, the higher the digestibility is. On the premise of no peptic ulcer, 2.0-3.0 mm particles are most popular. Sows are different, especially for sows within three fetuses. Since their feed can ensure the growth rate of lean meat and exercise their gastrointestinal function, the genetic advantage of high litter rate can be brought into play.