CN112806320A - 改善断奶仔猪健康水平的饲养方法 - Google Patents
改善断奶仔猪健康水平的饲养方法 Download PDFInfo
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- A—HUMAN NECESSITIES
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Abstract
改善断奶仔猪健康水平的饲养方法,它涉及一种饲养方法。本发明是为了解决断奶仔猪饲养过程中各种应激条件下,机体免疫力下降,健康水平降低导致疾病频发的技术问题。本方法如下:将断奶仔猪按饲养密度为0.67m2/头的猪栏中饲养30天,然后再分群。饲养断奶仔猪的饲料参照NRC(2012)猪营养需要量表配制。本发明通过合理调整仔猪的饲养密度,增强仔猪抗氧化能力,改善了生产性能。本发明具有简单实用,便于推广的特点,可大幅度提高生猪养殖场整体经济效益。本发明属于断奶仔猪饲养领域。
Description
技术领域
本发明涉及一种饲养方法。
背景技术
生产中猪的生产性能发挥受到诸多因素影响,其中品种因素占约20%,饲料及日常管理占约50%,生长环境则占约30%,饲养环境对猪生产性能发挥有很大的影响,饲养密度则是饲养畜禽的众多环境条件之一。集约化的生产模式侧重于降低养殖成本,提高养殖利润。集约化饲养条件下的猪常处于亚健康状态,并未发挥其最佳的生产性能,在该生产模式中饲养密度过低会大大增加养殖成本,常为降低土地成本而提高饲养密度,高饲养密度虽可以节约土地成本,但也会对猪的生产性能和机体健康产生不利影响,饲养密度直接影响猪舍内环境条件,例如温湿度、通风状况、有毒有害气体及尘埃微生物的含量等,进而影响猪的采食、饮水、排粪、活动等行为,导致发病率及死亡率上升,猪生产性能和养殖效益下降等诸多问题。因此,适宜的饲养密度是国内外科研人员研究的主要方向。
高饲养密度条件下,由于个体活动空间受限,动物无法及时规避应激源,导致机体应激反应增加。肝脏、脾脏和肾脏等内脏器官具有某些特定功能,是机体重要的组成部分。器官指数可以在一定程度上反应各器官生长和功能是否正常,从而反映机体的健康状况。肝脏是哺乳动物最重要的代谢器官,具有复杂的生理功能,参与糖、脂、蛋白、核苷酸等多种代谢反应。血清生化指标是监测动物健康和生理状况的重要依据。血清中的ALP主要存在肝细胞中,ALP的水平在一定程度上反映了肝脏是否健康。TP由ALB和球蛋白(GLB)组成,主要由肝脏合成,血液中TP和ALB水平的高低反映了机体蛋白质吸收和代谢的状况,也是动物应激反应的标志之一。
发明内容
本发明的目的是为了解决断奶仔猪饲养过程中各种应激条件下,机体免疫力下降,健康水平降低导致疾病频发的技术问题,提供了一种改善断奶仔猪健康水平的饲养方法。
改善断奶仔猪健康水平的饲养方法如下:将断奶仔猪按饲养密度为0.67m2/头的猪栏中饲养30天,然后再分群。
饲养断奶仔猪的饲料参照NRC(2012)猪营养需要量表配制。
所述饲养断奶仔猪的饲料按照重量百分含量由50.30%玉米、15%干酒糟、11.63%黄豆、14.21%次粉、3.67%麸糠、2.00%预混料、1.02%细粉、1.00%豆油、0.67%赖氨酸和0.50%磷酸二钙组成。
本发明通过合理调整仔猪的饲养密度,增强仔猪抗氧化能力,改善了生产性能。本发明具有简单实用,便于推广的特点,可大幅度提高生猪养殖场整体经济效益。
具体实施方式
本发明技术方案不局限于以下所列举具体实施方式,还包括各具体实施方式间的任意组合。
具体实施方式一:本实施方式改善断奶仔猪健康水平的饲养方法如下:将断奶仔猪按饲养密度为0.67m2/头的猪栏中饲养30天,然后再分群。
具体实施方式二:本实施方式与具体实施方式一不同的是饲养断奶仔猪的饲料参照NRC(2012)猪营养需要量表配制。其他与具体实施方式一相同。
具体实施方式三:本实施方式与具体实施方式一或二不同的是所述饲养断奶仔猪的饲料按照重量百分含量由50.30%玉米、15%干酒糟、11.63%黄豆、14.21%次粉、3.67%麸糠、2.00%预混料、1.02%细粉、1.00%豆油、0.67%赖氨酸和0.50%磷酸二钙组成。其他与具体实施方式一或二相同。
采用下述实验验证本发明效果:
1.试验设计
为了确定仔猪适应饲养密度,开展如下研究:选取体重相近(10.32±0.07kg)的断奶仔猪(长白×大约克郡)66头,随机分为3组,每组6个重复,每个重复为统一规格的2m2猪栏(长2.0m×宽1.0m):
A组,每个猪栏内饲养2头仔猪,饲养密度为1m2/头,简单标注为A(2m2,2头,1m2/头);
B组,每个猪栏内饲养3头仔猪,饲养密度为0.67m2/头,简单标注为B(2m2,3头,0.67m2/头);
C组,每个猪栏内饲养6头仔猪,饲养密度为0.33m2/头,简单标注为C(2m2,6头,0.33m2/头)
2.饲养管理
仔猪的饲粮组成参照NRC(2012),符合该阶段仔猪的营养水平需求,试验持续30d。基础日粮组成及营养水平见表1。猪舍环境由人工维持,舍内温度、湿度、光照和卫生学指标均符合国家标准(GB/T 17824.3-2008)。消毒、免疫等其他管理按照常规进行。出现重度腹泻或者疾病及时治疗或淘汰。
表1基础日粮组成及营养水平
注:每千克日粮提供:维生素A,1300IU;维生素D3,150IU;维生素E,11IU;维生素K3,0.5mg;维生素B1,1.2mg;维生素B2,2mg;维生素B6,1.3mg;维生素B12,5μg;叶酸,0.3mg;泛酸,7mg;铁,40mg;铜,3.3mg;锌,50mg;锰,2mg;碘,0.14mg;硒,0.15mg。
3.测定指标及方法
3.1样本采集
试验30天后,各组仔猪禁食12小时,每个重复随机取1头迅速采集血液,采集肝脏、肺脏、肾脏、脾脏称重,迅速采集胰腺和肝脏样品置于液氮速冻后,-80℃保存。血液样本室温静置2小时后,4℃条件下,3000r/min离心10min,分离上层血清,-80℃保存。
3.2血清抗氧化指标
采用东芝全自动生化分析仪(TBA-120FR,Toshiba Japan)检测血清总蛋白(TP)、白蛋白(ALB)、谷丙转氨酶(ALT)、谷草转氨酶(AST)、碱性磷酸酶(ALP)、尿素氮(UREA)、葡萄糖(GLU)、甘油三酯(TG)、胆固醇(CHOL)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)。
4.统计分析
试验数据用EXCEL2003初步整理后,用SPSS13.0统计软件进行单因素方差分析和Duncan多重比较,统计显著性水平为P<0.05。
5.结果
由表2可知,与A组、B组比较,C组断奶仔猪肝脏的器官指数显著升高(P<0.05)。而各组间肺脏、肾脏和脾脏指数没有显著影响(P>0.05),表明高饲养密度可能导致肝脏氧化损伤,引起肝脏肿大,进而对各种代谢反应产生影响。
表2不同饲养密度对仔猪器官指数的影响
由表3可知,与A组、B组比较,C组断奶仔猪血清中碱性磷酸酶(ALP)、胆固醇(CHOL)、总蛋白(TP)、白蛋白(ALB)水平均显著下调(P<0.05),A组、B组间无显著差异(P>0.05),同时各组之间其余指标均无显著差异(P>0.05)。血清中的ALP主要存在肝细胞中,ALP的水平在一定程度上反映了肝脏是否健康,血液中TP和ALB水平的高低反映了机体蛋白质吸收和代谢的状况,也是动物应激反应的标志之一。CHOL水平均显著降低,说明高饲养密度可能抑制了肝脏中胆固醇的生物合成。
表3不同饲养密度对仔猪血清生化指标的影响
仔猪的肝脏指数和血清生化指标是监测动物健康和生理状况的重要依据。综合以上各项指标及集约化养殖实际条件,建议仔猪饲养密度为0.67m2/头,具体猪栏面积可以根据猪场实际情况,参照中华人民共和国农业部行业标准《标准化规模养猪场建设规范》(NY/T1568-2007)灵活调整。
Claims (3)
1.改善断奶仔猪健康水平的饲养方法,其特征在于改善断奶仔猪健康水平的饲养方法如下:将断奶仔猪按饲养密度为0.67m2/头的猪栏中饲养30天,然后再分群。
2.根据权利要求1所述改善断奶仔猪健康水平的饲养方法,其特征在于饲养断奶仔猪的饲料参照NRC(2012)猪营养需要量表配制。
3.根据权利要求2所述改善断奶仔猪健康水平的饲养方法,其特征在于所述饲养断奶仔猪的饲料按照重量百分含量由50.30%玉米、15%干酒糟、11.63%黄豆、14.21%次粉、3.67%麸糠、2.00%预混料、1.02%细粉、1.00%豆油、0.67%赖氨酸和0.50%磷酸二钙组成。
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