Nutritive Value of the 1992 Corn Crop

Leeson, S.; Yersin, A. G.; Völker, Ludwig

doi:10.1093/japr/2.3.208

Cited by 41 publications

(27 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Iji et al 3 Units/min, in relation to porcine lipase standard. 4 Specific activity (µmole p-nitroaniline/mg protein/min). ab Mean values on the same column not sharing a superscript are significantly different (P < 0.05) for the factor shown.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Intestinal function and body growth of broiler chickens on diets based on maize dried at different temperatures and supplemented with a microbial enzyme

Iji

Slippers

et al. 2003

Reprod. Nutr. Dev.

View full text Add to dashboard Cite

-A study was conducted to evaluate the effects of varying drying temperature (Fresh, 85, 95 or 105 o C) on the nutritive value of maize and response of broiler chickens to diets based on such grain, and supplemented with a microbial enzyme (Avizyme 1500). The chemical composition of the grain was affected by drying temperature. Starch and amylopectin contents were increased while there was a reduction in amylose content. These changes were expected to underlie the response of chicks to the diets. Total feed intake over 28 days was increased (P < 0.05) as a result of heat-treating the maize up to 95 o C. The final body weight of chicks on the diet based on fresh maize was improved (P < 0.05) by the microbial enzyme supplement (MES). There was no effect of the enzyme supplement on body weight when assessed at earlier ages. Over the entire feeding period, feed conversion efficiency (FCE) declined (P < 0.001) with increasing oven temperature, regardless of the supplementation with the microbial enzyme. Body weight was influenced (P < 0.05) by the microbial enzyme only when assessed over the entire trial period. The weight of visceral organs, protein content and activities of pancreatic and jejunal digestive enzymes were unaffected by grain heat treatment or MES. The ileal digestibility of calcium was reduced (P < 0.001) on diets based on fresh maize and maize that was oven-dried at 105 o C. Heat-treatment also improved (P < 0.05) the ileal digestibility of phosphorus in chicks on the diets without MES. There were no effects of grain heat treatment or MES on the ileal digestibility of energy, protein, Ca and amino acids. The results indicate some variations in grain quality as a result of heat treatment but the differences were not significant enough to stimulate major responses to the MES. Further studies should examine samples from commercial drying processes or samples obtained from a closer simulation of commercial conditions, to arrive at more practical conclusions.body growth / broiler chicks / digestibility / digestive enzymes / drying temperature / grain quality / maize Reprod. Nutr. Dev. 43 (2003) 77-90 77

show abstract

Section: Resultsmentioning

confidence: 99%

“…It is relatively devoid of viscous non-starch polysaccharides, the principal antinutritive factors present in most temperate cereals [1][2][3]. In spite of this advantage, the nutritive value of maize is known to vary widely, as a result of climatic conditions during growth and harvest as well as post-harvest processing and storage [4][5].…”

Section: Introductionmentioning

confidence: 99%

Intestinal function and body growth of broiler chickens on diets based on maize dried at different temperatures and supplemented with a microbial enzyme

Iji

Slippers

et al. 2003

Reprod. Nutr. Dev.

View full text Add to dashboard Cite

show abstract

“…dos com base na matéria seca não foi detectada diferença significativa (P>0,05), embora em valores absolutos o Tratamento 10, sem secagem, apresentou menos 95 kcal/kg quando comparado ao Tratamento 9 em que se aplicou 40ºC na secagem dos grãos colhidos com 18% de umidade. Leeson et al (1993) sugeriram reduzir os valores de energia metabolizável do milho em, aproximadamente, 12 kcal/kg para cada 1% de aumento no teor de umidade do grão, considerando como valor base na colheita 30% de umidade. No presente estudo entretanto, essa relação não foi evidenciada.…”

Section: Methodsunclassified

Composição química e energética do milho com diversos níveis de umidade na colheita e diferentes temperaturas de secagem para frangos de corte

et al. 2002

View full text Add to dashboard Cite

RESUMO -O experimento foi conduzido com o objetivo de avaliar os efeitos dos níveis de umidade na colheita e da temperatura de secagem do milho sobre sua composição química e valores de energia metabolizável aparente corrigida para retenção de nitrogênio (EMAn) para frangos de corte. O milho foi colhido com 35; 25; 18; 15,3 e 14,3% de umidade e submetido à secagem a 100ºC; 70ºC e 40ºC de temperatura. Os valores de 15,3 e 14,3% de umidade de colheita do grão não foram submetidos à secagem, sendo o último valor referente ao tratamento que permaneceu na lavoura por 60 dias (milho pós-colheita). A composição química foi determinada segundo AOAC (1995) e a EMAn pelo método de coleta total de excretas, conforme descrito por Hill e Anderson (1958) e fórmulas de Matterson et al. (1965). Quando considerados os valores de EMAn expressos na matéria natural, verificaram-se diferenças significativas entre o milho sem secagem (15,3% de umidade) e os demais tratamentos. A diferença com o valor mais alto obtido de EMAn, nesse caso, foi de 11,8% (2864 vs 3247 kcal/kg). Isso se deve ao fato de o grão colhido com 15,3% de umidade ter atingido valores próximos a 24%, possivelmente devido a um processo de reidratação. Quando considerados os valores de EMAn com base na matéria seca, não houve diferenças entre os tratamentos. O valor nutritivo do milho colhido sob distintos níveis de umidade e submetido à secagem sob diferentes temperaturas permaneceu dentro dos valores padrão tabelados.Palavras-chave: composição química, energia metabolizável aparente corrigida, frangos de corte, milho, secagem, umidade Chemical and Energy Composition of Corn Harvested with Various Moisture Levels and Different Drying Temperatures to Broiler ChickensABSTRACT -The experiment was conducted to evaluate the effects of moisture levels at harvest and drying temperatures of corn on its chemical composition and apparent metabolizable energy corrected to zero nitrogen retention (AMEn) to broiler chickens. The corn was harvested with 35%, 25%, 18%, 15.3% and 14.3% of moisture and submitted to drying temperatures of 100, 70 and 40 ºC. The moisture levels of 15.3% and 14.3% of corn were not submitted to drying and the last value represented the treatment post-harvesting (60 days after the first harvest). The chemical composition was determined by AOAC (1995) and AMEn assay was carried out by total collection procedure as described by Hill and Anderson (1958) and methodology of Matterson et al. (1965). When the AMEn values were considered on as fed basis, significant differences occured between the treatment of corn no drying and the others. The mean AMEn value was 11.8% less in energy (2864kcal/kg) relative to the highest value (3247kcal/kg). This is due to grain humidity having reached 24% on that treatment caused by natural grain natural re-hydration. When the energy values of corn were changed to dry-matter basis, there were no differences among the treatments. There were no major changes in nutritive value of corn harvested with different moisture levels and...

show abstract

“…Therefore, many efforts have been made to determine accurate energy values (i.e., digestible, metabolizable, and net energy) for corn (Adeola and Bajjalieh, 1997;Yin et al, 2002;Kil et al, 2013a). However, energy values for corn vary because of genotype, growing conditions, and handling and storage methods (Barrier-Guillot et al, 1993;Leeson et al, 1993;Cowieson, 2005). These variations in corn energy values have been reported to influence pig performance (Adeola and Bajjalieh, 1997;Song et al, 2003;Kil et al, 2013b).…”

Section: Introductionmentioning

confidence: 99%

Digestibility of crude protein and amino acids in corn grains from different origins for pigs

Kil

Park

Son

et al. 2014

Animal Feed Science and Technology

View full text Add to dashboard Cite

Nutritive Value of the 1992 Corn Crop

Cited by 41 publications

References 5 publications

Intestinal function and body growth of broiler chickens on diets based on maize dried at different temperatures and supplemented with a microbial enzyme

Intestinal function and body growth of broiler chickens on diets based on maize dried at different temperatures and supplemented with a microbial enzyme

Composição química e energética do milho com diversos níveis de umidade na colheita e diferentes temperaturas de secagem para frangos de corte

Digestibility of crude protein and amino acids in corn grains from different origins for pigs

Contact Info

Product

Resources

About