不同水平粗纤维饲粮对妊娠母猪行为规癖影响的研究

试验对在群养单饲生产条件下 ,不同粗纤维水平饲粮对妊娠母猪行为规癖的影响进行了研究。选择长白经产 (均为五产 )妊娠母猪 9头 ,将其随机分为 3组 ,每组的 3头母猪饲养在同一圈舍中 ,每头每日分别饲喂粗纤维含量为 5 .6 7% ,11.5 8% ,16 .5 3%的饲粮 2 .5 0 kg,3.0 0 kg,3.5 kg。每日饲喂 3次 ,每次等量饲喂。采用瞬时记录法 ,每次观察间隔 2 m in。试验从母猪妊娠 2 2日至妊娠 78日进行为期 5 6 d的行为观察。结果表明 ,通过饲喂妊娠母猪高纤维饲粮 ,减少了其行为规癖 ,即无食咀嚼、与地面有关的行为、与饲槽有关的行为及与围栏有关的行为的发生 ,并增加了趴卧时间 ,这表明饲喂妊娠母猪高纤维饲粮对其福利有益 ,特别是在缺乏采食替代物的环境贫乏的畜舍系统中。

Effect of different-fibre diets on behaviour stereotypies of pregnant sows

This experiment was carried out to study the effect of different-fiber diets on behaviour stereotypies of pregnant sows which were kept in the group-breeding and individual-feeding pens.In this experiment,9 multiparous (the fifth parity) landrace sows were observed.3 sows were kept in the same pen with concrete floor.The total daily intake of major nutrients except the level of fibre was calculated to be the same in the three regiments.Daily allowances were,respectively,2.50 kg,3.00 kg and 3.50 kg.The sows were served three times.The quantity of each time was equal.Behaviour was rtecorded by direct observation.During observation scan sampling was adopted and the time interval for each observation is 2 minutes.These results indicate that feeding sows diets which are high in dietary fibre may reduce behaviour stereotypies which include vacuum chewing;trough-related activity;floor-related activity and bar-related activity and increase the time of lying down behaviour of pregnant sows.Bulky feed may have beneficial effects on the welfare of sows,especially when pregnant sows weren't provided a foraging substrate and were kept in barren housing.