干湿料饲喂方式下商品猪生产和健康指标模型构建与比较

Modelling and comparison of production and health indicators of commercial pigs under dry and wet feeding

【目的】精准饲养是当前生猪养殖产业的大趋势,但在实际应用中存在缺乏前期基础数据、各阶段湿料饲喂的采食量不明确等问题。本研究旨在探究干湿料饲喂猪只的生长发育规律、采食量动态模型和健康情况。【方法】选取132头平均初始体质量为(10.56±1.21)kg的商品猪,随机分为2组,每组11次重复,每次重复6头猪,2组分别饲喂干料和湿料,试验周期为120 d。通过Logistic、Gompertz和Von Bertalanffy 3种模型分析拟合干湿料饲喂猪只的生长曲线和采食量动态模型,并对干湿料饲喂猪只的健康情况进行研究。【结果】Von Bertalanffy模型拟合干料饲喂猪只生长曲线的效果最好,拟合度为0.999;Gomperz模型能更好地拟合湿料饲喂猪只的生长曲线,拟合度为0.999。Gomperz模型拟合干料饲喂猪只采食量模型的效果最好,拟合度为0.851;Von Bertalanffy模型能更好地拟合湿料饲喂猪只的采食量模型,拟合度为0.988。湿料饲喂保育仔猪的腹泻率和腹泻指数显著低于干料饲喂(P<0.05)。【结论】本研究构建了干湿料饲喂猪只的生长曲线和采食量模型,拟合效果较好;探明了干湿饲喂猪只的健康情况,为猪只的精准饲养提供了数据支撑。

【Objective】Precision feeding was a major trend in the current pig breeding industry,but there were problems such as the lack of pre-basic data and the unclear feed intake at each stage of wet feed feeding in practical application.This study was aimed to explore the growth and development pattern,dynamic model of feed intake and health of pigs under dry and wet feeding.【Method】A total of 132 commercial pigs with an average initial body weight of(10.56±1.21)kg were randomly divided into two groups with 11 replicates of six pigs each,and were fed with dry and wet diets,respectively,for 120 d.The growth curves and feed intake dynamics of the pigs fed with dry and wet diets were analysed and fitted by three models of Logistic,Gompertz,and Von Bertalanffy.Health of pigs fed with wet and dry diets was investigated.【Result】Von Bertalanffy model fitted the growth curve of dry-fed pigs best,with a fitting degree of 0.999.Gomperz model fitted the growth curve of wet-fed pigs better,with a fitting degree of 0.999.Gomperz model fitted the model of feed intake of dry-fed pigs best,with a fitting degree of 0.851.Von Bertalanffy model fitted the feed intake model of wet-fed pigs better,with a fitting degree of 0.988.The diarrhoea rate and diarrhoea index of wet-fed piglets were significantly lower than those of dry-fed piglets(P<0.05).【Conclusion】The growth curves and feed intake models of pigs fed with wet and dry materials are constructed and fitted well,and the health conditions of pigs fed with wet and dry materials are investigated,which can provide a data support for the accurate feeding of pigs.