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首页> 外文期刊>Animal >Herd-level factors associated with piglet weight at weaning, kilograms of piglets weaned per sow per year and sow feed conversion
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Herd-level factors associated with piglet weight at weaning, kilograms of piglets weaned per sow per year and sow feed conversion

机译：与仔猪断奶仔猪重量相关的畜群因素，每年播种的猪肉千克仔猪和播种转换

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摘要

To understand the production factors that affect conclusive parameters of sow herd performance can improve the use of the resources and profitability of farm. The objective of this study was to identify associations and quantify the effects of a set of factors related to piglet weight at weaning (PWW), kilograms of piglets weaned per sow per year (kgPWSY) and sow feed conversion (SFC). Data from 150 farms were collected, for a total study population of 135 168 sows, including gilt replacement, breeding (mating), gestation and farrowing/lactation phases. A questionnaire focusing on reproductive performance, management, facilities, feeding, health and biosafety was administered. Multiple linear regression models were used to assess associations among factors with each of the three dependent variables. Increased duration of lactation was positively associated with PWW, kgPWSY and SFC. The increase in the number of live born pigs per litter was positively associated with kgPWSY and with SFC. Farms with higher PWW had farrowing room humidifiers, did not surgically castrate male piglets and used quaternary ammonia compounds for farrowing room disinfection. Farms with higher kgPWSY used lined ceilings in farrowing rooms and winter feeds with higher CP percentages in gestation; they also had more farrowings per sow per year. Sow feed conversion was worse in farms with partly slatted floors during gestation, in farms feeding lactating sows six times a day or ad libitum and farms with a higher sow-handler ratio. This study indicates that farms can increase PWW and kgPWSY and improve the SFC by changing one or more management, biosafety and feeding practices or facilities as well as by focusing on improving several performance parameters, particularly increasing the duration of lactation and the number of live born pigs per litter.
机译：要了解影响母猪畜群绩效的决定性参数的生产因素可以改善农场资源和盈利能力的利用。本研究的目的是识别协会并量化与断奶（PWW）的一组与仔猪重量相关的因素的影响，每年播种的猪疹（kgpwsy）和播种饲料转化（SFC）。收集了150个农场的数据，总研究人口为135 168母猪，包括镀金替代，繁殖（交配），妊娠和哺乳期/哺乳期/哺乳期。给管理着调查问卷，专注于生殖性能，管理，设施，喂养，健康和生物安全。多个线性回归模型用于评估与三个相关变量中的每一个的因子之间的关联。增加的泌乳持续时间与PWW，KGPWSY和SFC呈正相关。每垫子的活产猪数量的增加与KGPWSY和SFC相关。具有较高PWW的农场有盗用室加湿器，没有手术阉割雄性仔猪和使用季氨氨化合物用于盗用室消毒。 kgpwsy较高的农场使用衬里的天花板在击球房和冬季饲料中，妊娠中的较高百分比;他们每年也有更多的母猪。在妊娠期间，母猪饲料转换较差，在妊娠期间有部分换板，在农场喂养哺乳期播种六次或具有较高母猪处理比率的农场。本研究表明，农场可以通过改变一个或多个管理，生物安全和喂养实践或设施来增加PWW和KGPWSY，并通过重点关注改善几个性能参数，特别是提高哺乳期的持续时间和诞生的持续时间每个垃圾的猪。

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