Influence of gestation length, body mass of piglets and a level of precolostral IgG on the quality of colostral immunity
2003
Milic, M.
By investigating the influence of gestation length, body mass of piglets at the birth and a concentration of precolostral IgG, on the concentration of IgG in a piglets blood sera 24 hours after the first suckling, we evaluated an influence of this three factors on quality of colostral immunity. This is the only type of piglets defense in the neonatal period. Our researches were done in the conditions of farm and a laboratory. Field investigations were done on the farm with the very low productivity parameters at the last five years. IgG concentration was determined by method of a radial immune diffusion. We used RID plates with the agar gel, with the monospecific immunosera for the IgG of pigs. The results show certain dependence between the concentration of IgG, 24 hours after the feeding with colostrum, and the body mass at the birth. Newborn piglets with the higher mass at birth are more able to occupy anterior teats and have a better position for suckling, so they can feed with higher quantity of colostrum. At the other side, differences between investigated groups we can't connect neither with the length of gestation nor with the level of precolostral IgG. This shows that it is necessity to raise a body mass of newborn piglets, but also it make an indecision is it useful to sinchronize parity, because the short duration of gestation period can cause an insufficient body mass of newborn piglets. The levels of precolostral IgG, can exceed onces in this investigation so we can't state that the higher level of IgG wouldn't be an inhibitory condition for the resorption of colostral immunoglobulins.
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