旨在研究不同产圈对母猪繁殖性能及应激水平的影响,以期探究一种能在实际生产中推广应用的福利友好型哺乳母猪饲养模式。选取胎次相同,妊娠期、体况相近的24头二元杂交母猪（大白×长白）,随机分为3个处理组,即限位栏产圈＋高床组（...旨在研究不同产圈对母猪繁殖性能及应激水平的影响,以期探究一种能在实际生产中推广应用的福利友好型哺乳母猪饲养模式。选取胎次相同,妊娠期、体况相近的24头二元杂交母猪（大白×长白）,随机分为3个处理组,即限位栏产圈＋高床组（Farrowing crate＋high bed group,FCB,n=8）、自由产圈＋高床组（Freedom farrowing pen＋high bed group,FFPB,n=8）、自由产圈＋部分发酵床地面组（Freedom farrowing pen＋partially fermented bed surface group,FFPF,n=8）。在母猪预产期的前7d将其转入不同的产圈,分娩后第21天仔猪断奶。结果显示：1）FFPB、FFPF母猪分娩时长显著低于FCB（P〈0.05）,FFPB母猪分娩间隔显著低于FCB（P〈0.05）;FFPB母猪血液催产素（Oxytocin,OT）及催乳素（Prolactin,PRL）含量有升高的趋势（P〈0.10）。2）在母猪转入产房后第2天,FFPB和FFPF母猪腰部体表温度显著低于FCB（P〈0.05）。在分娩后第7天,FFPB与FFPF母猪唾液α-淀粉酶（α-amylase,AMY）含量显著低于FCB（P〈0.05）。在分娩后第14天,FFPF母猪唾液AMY含量显著低于FCB（P〈0.05）,FCB母猪唾液皮质醇（Cortisol,COR）有明显升高的趋势。结果表明：在分娩当天,自由产圈母猪血液繁殖激素含量升高,产程及分娩间隔时间减少;分娩后的1~2周内,自由产圈母猪应激水平明显降低,更接近福利友好型哺乳母猪饲养模式。展开更多
[ Objective ] To study the influence of sows farrowing performance on the growth of 21-day-old weaned piglets and their correlation. [ Methods ] A total of 1 350 Duroc x Landrace Yorkshire piglets produced by 2-6 fet...[ Objective ] To study the influence of sows farrowing performance on the growth of 21-day-old weaned piglets and their correlation. [ Methods ] A total of 1 350 Duroc x Landrace Yorkshire piglets produced by 2-6 fetal Landrace x Yorkshire sows from 118 litters within a month were selected to be the test objects. All the newborn piglets were lactated by their parent sows. The test groups were divided according to different numbers （6 - 17） of live birth. The variance analysis were conducted on birth weight, litter weight at birth, number of 21-day-old weaning piglets, weaning weight, weaninl2g weight of litter, weaning survival rate and relative individual weight gain among different weeks. [ Results] Sows farrowing performance had significant influence on the growth performance of 21- day-old piglets. However, the influences among different traits varied, some were even on the contrary. With the increase of the number of live birth, the birth weight, weaning weight of litter and weaning survival rate showed a decline trend. And when the number of live birth was equal or more than 14, the weaning sur- vival rate dropped to below 90% （P 〈 0.01 ） ; when the number of live birth was 13, the litter weight at birth and weaning weight of litter reached the peak. What- ever the number of live birth increased or decreased, the weaning weight showed a regular decline trend. [ Conclusions] When the number of live birth changed from 11 to 13, the maximum values of the economic indicator （weaning weight of litter） and the technical specifications （weaning survival rate） were achieved.展开更多
文摘旨在研究不同产圈对母猪繁殖性能及应激水平的影响,以期探究一种能在实际生产中推广应用的福利友好型哺乳母猪饲养模式。选取胎次相同,妊娠期、体况相近的24头二元杂交母猪（大白×长白）,随机分为3个处理组,即限位栏产圈＋高床组（Farrowing crate＋high bed group,FCB,n=8）、自由产圈＋高床组（Freedom farrowing pen＋high bed group,FFPB,n=8）、自由产圈＋部分发酵床地面组（Freedom farrowing pen＋partially fermented bed surface group,FFPF,n=8）。在母猪预产期的前7d将其转入不同的产圈,分娩后第21天仔猪断奶。结果显示：1）FFPB、FFPF母猪分娩时长显著低于FCB（P〈0.05）,FFPB母猪分娩间隔显著低于FCB（P〈0.05）;FFPB母猪血液催产素（Oxytocin,OT）及催乳素（Prolactin,PRL）含量有升高的趋势（P〈0.10）。2）在母猪转入产房后第2天,FFPB和FFPF母猪腰部体表温度显著低于FCB（P〈0.05）。在分娩后第7天,FFPB与FFPF母猪唾液α-淀粉酶（α-amylase,AMY）含量显著低于FCB（P〈0.05）。在分娩后第14天,FFPF母猪唾液AMY含量显著低于FCB（P〈0.05）,FCB母猪唾液皮质醇（Cortisol,COR）有明显升高的趋势。结果表明：在分娩当天,自由产圈母猪血液繁殖激素含量升高,产程及分娩间隔时间减少;分娩后的1~2周内,自由产圈母猪应激水平明显降低,更接近福利友好型哺乳母猪饲养模式。
文摘[ Objective ] To study the influence of sows farrowing performance on the growth of 21-day-old weaned piglets and their correlation. [ Methods ] A total of 1 350 Duroc x Landrace Yorkshire piglets produced by 2-6 fetal Landrace x Yorkshire sows from 118 litters within a month were selected to be the test objects. All the newborn piglets were lactated by their parent sows. The test groups were divided according to different numbers （6 - 17） of live birth. The variance analysis were conducted on birth weight, litter weight at birth, number of 21-day-old weaning piglets, weaning weight, weaninl2g weight of litter, weaning survival rate and relative individual weight gain among different weeks. [ Results] Sows farrowing performance had significant influence on the growth performance of 21- day-old piglets. However, the influences among different traits varied, some were even on the contrary. With the increase of the number of live birth, the birth weight, weaning weight of litter and weaning survival rate showed a decline trend. And when the number of live birth was equal or more than 14, the weaning sur- vival rate dropped to below 90% （P 〈 0.01 ） ; when the number of live birth was 13, the litter weight at birth and weaning weight of litter reached the peak. What- ever the number of live birth increased or decreased, the weaning weight showed a regular decline trend. [ Conclusions] When the number of live birth changed from 11 to 13, the maximum values of the economic indicator （weaning weight of litter） and the technical specifications （weaning survival rate） were achieved.
