SciELO - Scientific Electronic Library Online

 
vol.41 número6Metabolismo fotossintético e enzimático das mudas de Schinus terebinthifolius Raddi sob déficit hídricoInfluência do pH na eficácia da água ozonizada no controle de microrganismos e efeito na qualidade de morango (Fragaria x ananassa Duch.) armazenado índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Ciência e Agrotecnologia

versão impressa ISSN 1413-7054versão On-line ISSN 1981-1829

Resumo

ESTEVES, Lucas Antonio Costa et al. Predicting the metabolizable energy of first and second corn harvests for piglets. Ciênc. agrotec. [online]. 2017, vol.41, n.6, pp.683-691. ISSN 1413-7054.  https://doi.org/10.1590/1413-70542017416015217.

Corn is one of the primary ingredients in swine diets, but there is a variation in its chemical composition and metabolizable energy (ME) content. Therefore, faster methods are required that can determine more accurate ME values to improve piglet diets. This study determined and predicted the ME of corn from first and second harvests for piglets. Two experiments were conducted to determine the ME values for 18 corn batches, evaluating corn from first and second harvests. The corn batches were analysed to determine the concentration of dry matter (DM), starch (ST), neutral detergent fiber (NDF), acid detergent fiber (ADF), crude protein (CP), ether extract (EE), ash, calcium (Ca), phosphorus (P) and gross energy (GE). To determine the ME values, 40 piglets were used in each experiment, grouped into a randomized block design with four replicates. The ME of the corn from the first and second crops ranged from 3281 to 3509 and from 3143 to 3652 kcal/kg on an as-fed basis, respectively, and the fitted equations to predict the ME presented a low R2. The best fit equation for predicting the ME of corn for piglets was determined to be ME= - 6306.15 + 400.652ADF + 117.286ST + 24924.7Ca + 2489.66P - 148.41CP (R2=0.44) for the first harvest; ME= -7560.08 + 2.66895GE - 120.69ADF (R2=0.48) for the second harvest; and ME= 2848.95 + 68.5714NDF + 161.938EE - 5563.5Ca - 1454.2P (R2=0.41) for the joint harvest.

Palavras-chave : Metabolizability coefficients; prediction equations; swine.

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )