Produção e avaliação de plasma bovino desidratado como ingrediente de rações de leitões desmamados precocemente. / Production and evaluation of plasma dehydrated as an ingredient in cattle rations of early weaners.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The objective of this work was to obtain spray dried bovine plasma (SDBP) and to compare it with a commercial one (CSDBP) as feed ingredients of weanling pigs (weaned at 21 days of age) based on performance, blood and plasma components, liver and spleen glutathione levels, small intestine morphology and diarrhea score. Blood of healthy bovines was collected at a slaughterhouse using sodium citrate as anticoagulant. Blood plasma was obtained by centrifugation and then spray dried. A complete block design with six replications per treatment and four pigs per experimental unit (pen) was used. The treatments consisted on a basal diet and two test diets containing either 7% SDBP or 7% CSDBP in phase I (0-14 day-postweaning period) and 2% SDBP or 2% CSDBP in phase II (15-35 day-postweaning period). In phase I, pigs fed diets containing plasma (either SDBP or CSDBP) had higher (P £ .05) average daily feed intake (ADF) and average daily gain (ADG) than the control pigs. Feed conversion (FC) of pigs fed SDBP was better (P £ .05) then those fed control or CSDBP diets. In phase II, pigs fed SDBP had better ADG and FC (P £ .05) than those fed basal diet. No treatment effects (P >.05) were found on ADF. Although there were no treatment effects (P >.05) on ADF considering the whole experimental period, pigs fed diets containing plasma had greater (P £ .05) ADG and better (P £ .05) FC than those fed basal diet. The liver glutathione levels were higher (P £ .05) for pigs fed plasma diets than for those fed control diet. The animals fed basal diets showed shorter (P £ .05) jejunal mucosa and villus length in phase I, as well as shorter villus length in phase II . The plasma inclusion on the diets also contributed for the reduction on the postweaning diarrhea incidence. Therefore, it can be concluded that bovine plasma provide benefical effects on weanling pig performance and health.

ASSUNTO(S)

nutrição animal desempenho performance blood sangue - proteinas leitão (suino) pigs animal nutrition

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