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Use of Cross-Fostering to Enhance Growth of Pigs That Are Predicted to Grow Poorly Based on Plasma α-1 Acid Glycoprotein Concentration
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作者 t. g. ramsay M. J. Stoll +1 位作者 L. L. Schreier A. E. Shannon 《Open Journal of Animal Sciences》 2018年第1期39-50,共12页
Porcine α-1 acid glycoprotein (AGP) in newborn pigs can be used to predict growth rate through weaning and is a marker for growth impairment. This study examined whether nutritional support can improve the growth rat... Porcine α-1 acid glycoprotein (AGP) in newborn pigs can be used to predict growth rate through weaning and is a marker for growth impairment. This study examined whether nutritional support can improve the growth rate of piglets identified as having poor growth potential. Cross-fostering (CF) and CF plus a milk supplement (CF + MS) were used to attempt to improve the growth performance of pigs. Blood was collected at d1 post-parturition for measurement of plasma AGP for all pigs in 28 litters contributing to the experiment. Piglets with the highest plasma AGP level were weight and sex matched to a littermate with a low plasma AGP concentration and four pairs of these weight and sex matched pigs were grouped into four foster litters per treatment (control, CF, CF + MS). The control group was assembled by pairing littermates remaining in donor litters. Pigs stayed on treatment until weaning at 21 days of age. At 35 days of age, dual energy X-ray absorptiometry (DXA) was performed on CF and CF + MS pigs to evaluate carcass composition. Control pairs differed in weaning weight, with pigs with higher plasma AGP at 1 day of age having smaller weaning weights than their littermates of similar birth weight (P < 0.05). However, CF eliminated the difference in weaning weight between the slow growing pigs and their birth weight matched littermates. CF + MS produced a similar effect as CF (P > 0.05). At 35 days of age, body weights were still similar between CF littermates and between CF + MS littermates (P > 0.05). DXA analysis demonstrated that body composition was similar between CF or CF + MS treated pigs and their littermates. These data demonstrate that CF can be used to correct the growth impairment in pigs predicted using plasma AGP as the marker. CF + MS can do the same, but at greater expense. 展开更多
关键词 NEONATAL Pig Alpha-1 ACID GLYCOPROTEIN CROSS-FOSTERING GROWTH Rate Body Composition
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促生长因子
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作者 t. g. ramsay 孙晓康 《国外畜牧学(猪与禽)》 1991年第4期33-35,共3页
引言在所有的动物,生长过程都是一种高度受调控的过程。每一头猪都是由一个单细胞的受精卵发育成含亿万个细胞的复杂机体的。原始的细胞在胚胎期、胎儿期和出生后的发育期中不断地增殖和分化。体内必然存在着一种精细的平衡机制以调控... 引言在所有的动物,生长过程都是一种高度受调控的过程。每一头猪都是由一个单细胞的受精卵发育成含亿万个细胞的复杂机体的。原始的细胞在胚胎期、胎儿期和出生后的发育期中不断地增殖和分化。体内必然存在着一种精细的平衡机制以调控细胞的增殖及其以后的发育过程,最后成功地形成由不同器官组织构成的猪体。 展开更多
关键词 生长因子 激素 应用
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