Effects of Feeding and Housing Systems for Gestating Sows and Gilts
In the study a group containing 160 seven month old gilts was used to determine the effect of crated versus penned and drop-fed versus trickle-fed systems for gestating sows. The drop-fed systems allow the sow to obtain all of the nutrients needed for that day at a single moment, whereas the trickle-fed system forces the animal to feed over a 30 minute period. These 160 gilts were recorded for two parities. In the first parity, 117 farrowed, and in the second parity, 72 farrowed. All of the gilts came from the same farm and were bred through artificial insemination when standing estrus was shown. If the animal did not become pregnant, she was removed from the study, and therefore was not included for farrowing rate purposes.
A summary of "Evaluation of drop versus trickle-feeding systems for crated or group-penned gestating sows." by L. E. Hubert and J. J. McGlone, published in the Journal of Animal Sciences, volume 84, pg. 1004-1014. 作者: eliteman 時(shí)間: 2011-9-21 14:29 本帖最后由 eliteman 于 2011-9-21 21:51 編輯
國(guó)外當(dāng)前養(yǎng)豬業(yè)中，這種飼喂技術(shù)一般是用在母豬上。對(duì)于群飼的母豬，為了避免或減少喂料時(shí)其相互攻擊、搶食，常采用此法，但使用此方法還需要配備專門的設(shè)備，這就是trickle feeding system。
在trickle feeding system中常依據(jù)母豬群中采食最慢的母豬的采食速度，來(lái)調(diào)整自動(dòng)喂料設(shè)備的給料速度，即保證吃的慢的母豬的料槽中不至于積累飼料太多，又要保證吃得快的母豬的料槽中有料吃。另外，在母豬的各個(gè)采食位之間都有小短隔欄將其隔開(kāi)。這些措施都可在一定程度上大大降低母豬間的相互攻擊、搶食。
下面是國(guó)外某兩種trickle feeding system的介紹。
1、 DozitA trickle feeding system for group housed sows.
Each sow has an individual feeding space where feed is slowly trickled into the trough at a rate to match her eating speed, releasing the feed this way reduces aggression between the sows.
Special Features
· Low cost durable non corrosive components are supplied for easy assembly
· Variable capacity up to 7litres of pellets can be easily and accurately dispensed to suit different animals
· Easy to use, the sows find feed from the first day without training
· Low investment as only 1 dispenser is required per 2 sows
· Clear Feed Scale marked to 100ml increments for accurate feed allocation
· Excellent feed flow resulting from conical shape smooth inner walls and asymmetrical discharge
· Pear shaped dump ball ensures all feed is easily dispensed from the feeder
· Transparent housing for quick inspection from all sides
· Easy access is gained via a large window for easy cleaning or to add individual medication
· Easy cleaning: The simple ‘click’ system makes removal for thorough cleaning quick and easy
· Personnel not associated with feeding time therefore able to move more freely amongst the animals
· Minimal maintenance: the polypropylene dispenser will give years of trouble free operation
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2、The Big Dutchman SIMULTAN trickle feeding system
The Big Dutchman SIMULTAN trickle feeding system enables sows housed in groups to eat quietly and at the same time.
This is achieved by means of a constant trickle of feed into the trough. A sow dispenser above each feeding place is emptied by means of a second auger placed underneath and slightly offset. This auger runs very slowly so that a predermined amount of feed (90 to 110 grams per minute) trickles into the troughs.
The aim of trickle feeding is to keep all the sows at the trough and interested in their own feed. It is then no longer neccesary to keep them in seperate stalls at feeding. (, 下載次數(shù): 35)
