摘要
【目的】探讨理想氨基酸模式下,日粮不同赖氨酸水平对妊娠后期母猪繁殖性能、血清生化指标和粪氮排泄量的影响。【方法】选用3~7胎次、体况相似、预产期相近的64头长大二元杂交母猪,随机分成4个组,每处理组16个重复,每个重复1头母猪,分别饲喂可消化赖氨酸水平为0.58%、0.63%、0.68%、0.73%的日粮,试验期始于配种后80 d,终于产仔结束。【结果】0.63%组的仔猪初生窝重分别比0.58%组和0.73%组显著增加8.26%、7.87%(P<0.05),仔猪初生重比0.58%组显著增加5.84%(P<0.05),血清尿素氮浓度比0.58%、0.68%、0.73%组显著降低(P<0.05),血清胰岛素浓度显著高于0.58%组和0.73%组(P<0.05),血清赖氨酸、苏氨酸浓度显著低于0.58%组和0.73%组(P<0.05),血清亮氨酸、异亮氨酸浓度显著低于0.73%组(P<0.05),妊娠后期母猪氮表观消化率比0.73%组显著提高(P<0.05),粪氮排泄量比0.68%组和0.73%组显著减少(P<0.05)。【结论】可消化赖氨酸水平为0.63%时,妊娠后期母猪能获得较好的繁殖性能。
【Objective】 Effects of lysine content in diet on the reproductive performance, serum biochemistry, and excretion nitrogen of sows in late gestation stage were determined.【Method】 A total of 64 healthy, pregnant, crossbred sows(Large White×Landrace) with 3–7 parities and a similar parturition date was randomly divided into 4 groups. Each group consisting of 16 replicates and one reference sow were fed with forage containing a digestible lysine level at 0.58%, 0.63%, 0.68% or 0.73%.Feeding the experimental diet on the sows started at the 80th day after artificial insemination and finished after farrowing.【Result】 The weight of newly born litters in the 0.63% lysine group was significantly higher than that in the 0.58% group by8.26%, and that in the 0.73% group by 7.87%(P<0.05). The piglets at birth weighed significantly higher in the 0.63% group than the 0.58% group by 5.84%(P<0.05). In the 0.63% group, the serum urea nitrogen was significantly lower than either the0.58%, 0.68% or 0.73% group;the insulin significantly higher than the 0.58% or the 0.73% group;the serum lysine and threonine significantly lower than the 0.58% or the 0.73% group;the leucine and isoleucine significantly lower than the 0.73%group;the crude protein digestibility significantly higher than the 0.73% group;and, the excretion nitrogen significantly lower than the 0.68% or the 0.73% group.【Conclusion】 When the sows were fed at late gestation stage with a diet that contained0.63% digestible lysine, an improved reproductive performance in them could be expected.
作者
方桂友
刘景
邱华玲
董志岩
FANG Gui-you;LIU Jing;QIU Hua-ling;DONG Zhi-yan(Institute of Animal Husbandry and Veterinary Medicine,Fujian Academy of Agriculture Sciences,Fuzhou,Fujian 350013,China)
出处
《福建农业学报》
CAS
CSCD
北大核心
2020年第3期260-265,共6页
Fujian Journal of Agricultural Sciences
基金
福建省科技计划公益类专项(2017R1023-2)。
关键词
妊娠母猪
赖氨酸
繁殖性能
血清生化指标
氮排泄量
sow in late gestation stage
lysine
reproductive performance
serum biochemistry
excretion nitrogen
