不同氨基酸螯合铁及补铁方案对仔猪生长发育的调控效应

Regulatory effects of different ferrous amino acid chelates (FAAC)and ferrous supplement methods on performance of piglets

选用临产前一个月的第 2胎纯种杜洛克母猪 17头 ,研究赖氨酸铁和甘氨酸铁作为母、仔猪日粮铁源添加剂对仔猪生长发育的影响。结果表明 ,母、仔猪分别采食以赖氨酸铁和甘氨酸铁为铁源的日粮 ,仔猪出生后即使不注射铁补针也可获得与常规补铁同样的生长发育效果 ;若同时辅以铁补针 ,则仔猪的生长速度可显著提高 (P <0 .0 5 )。不同补铁方式对仔猪生长发育的效应分析显示 ,铁源和铁补针能显著影响仔猪的日增重 (P <0 .0 5 ) ,且对提高仔猪 0～ 35d日增重有显著的互作效应 (P <0 .0 5 )。就补铁方式而言 ,赖氨酸铁辅以注射铁补针是规模猪场较为理想的仔猪补铁方式。

The regulatory effects of different FAACs in sow and piglet rations were evaluated in this study with 17 pure Duroc sows, 1 month before the 2nd parturition. The results indicated that growth rate of piglets which were from FAACs fed sows and fed on diets containing FAACs was similar with that of piglets born from FeSO 4 fed sows, fed on diets containing FeSO 4 and injected with ferriporphyrin. Furthermore, growth rates during 0-35 d were significantly improved by the combination of FAACs with ferriporphyrin via intramuscular injection (FVII, P <0.05). Analysis of ferrous supplement method effects on growth performance showed that both ferrous additive and FVII affected growth rate ( P <0.05), and there existed positively interactive effect between FAAC and FVII on daily body gain ( P <0.05). As far as ferrous supplement methods were concerned, Fe Lys combined with FVII was the ideal ferrous provision.