Lipid digestibility and energy content of distillers' corn oil in swine and poultry1

Abstract

Two experiments were conducted to determine the DE and ME and apparent total tract digestibility of ether extract of 3 distillers' corn oil (DCO; 4.9, 12.8, or 13.9% free fatty acids [FFA]) samplescompared with a sample of refined corn oil (CO; 0.04% FFA) and an industrially hydrolyzed high-FFA DCO (93.8% FFA) in young pigs and growing broilers. In Exp. 1, 54 barrows (initial age = 28 d) were fed a common diet for 7 d and then fed their allotted dietary treatment (either 100% basal diet or 1 of 5 test diets consisting of 90% basal diet plus 10% test lipid) for the next 7 d in group pens (9 pigs/pen). For the next 10 d, pigs were moved to individual metabolism crates for continued diet and crate adaptation and to a twice-daily feeding regimen. Pigs remained on their respective diets for a 4-d total fecal and urine collection period. For Exp. 2, 567 male broilers were obtained from a commercial hatchery (1 d of age) and reared in grower battery cages that contained 9 chicks per cage. Broilers were fed a common corn-soybean meal starter diet from placement until the beginning of the trial (19 d of age). Birds were then randomly assigned to 1 of 6 dietary treatments (94% basal diet plus 6% dextrose or 94% basal diet plus 6% test lipid substituted for dextrose) on d 19 and were allowed an 8-d dietary acclimation period followed by a 48-h energy balance assay. In Exp. 1, the DCO sample with 12.8% FFA contained the lowest ( < 0.05) DE (8,036 kcal/kg) content compared with the 0.04% refined CO sample and the 4.9 or 93.8% FFA DCO samples (8,814, 8,828, and 8,921 kcal/kg, respectively), with the DCO source containing 13.9% FFA having intermediate DE (8,465 kcal/kg) content. The ME content of these lipid sources also differed among treatments ( < 0.01), following trends similar to their DE values, with no differences noted for ME as a percentage of DE ( > 0.35) content among the lipids evaluated. In Exp. 2, lipids containing 0.04, 4.9, 12.8, and 13.9% FFA had similar nitrogen corrected apparent ME (AME) values (8,072, 7,936, 8,036, and 7,694 respectively), except for the industrially hydrolyzed DCO sample containing 93.8% FFA, which contained 6,276 kcal/kg ( < 0.01). Using published prediction equations, the predicted DE of these lipids for swine was 3.5% greater than the values determined in Exp. 1 for all lipid sources, except for the DCO sample containing 93.8% FFA, which the predicted DE was underestimated. Likewise, the predicted AME of these lipids for broilers was 7.4% greater than the determined AMEn (Exp. 2) for all lipid sources.

Impacts of feeding peroxidized oils on growth and oxidative status in swine and poultry

“…The FA profile of CWG, SO, and PO sources evaluated in this study were similar to published values (O'Brien, 2009;NRC, 2012) as shown in Table 1. The 2 DCO samples had FA profiles that resembled refined corn oil (NRC, 2012), and similar to those from recently published data evaluating DCO (Moreau et al, 2011;Winkler-Moser and Breyer, 2011;Kerr et al, 2016). As expected, the FFA content of the 2 refined oils (PO and SO) were low compared to that for CWG and the 2 DCO samples, with the 2 DCO samples having a similar FFA content to those reported previously (Moreau et al, 2010;Kerr et al, 2016).…”

“…The 2 DCO samples had FA profiles that resembled refined corn oil (NRC, 2012), and similar to those from recently published data evaluating DCO (Moreau et al, 2011;Winkler-Moser and Breyer, 2011;Kerr et al, 2016). As expected, the FFA content of the 2 refined oils (PO and SO) were low compared to that for CWG and the 2 DCO samples, with the 2 DCO samples having a similar FFA content to those reported previously (Moreau et al, 2010;Kerr et al, 2016). Each lipid source was also analyzed for moisture (M), insoluble (I), and unsaponifiables (U) because of research suggesting that MIU should be considered for improving the accuracy of predicting DE and ME from various lipid sources (Wiseman et al, 1992;Blanch et al, 1996;Vila and Garcia, 1996a,b;Rosero et al, 2015a).…”

“…Similarly, DE as a percentage of GE, was greatest for SO (P < 0.05), but was not different among the other lipid sources. Metabolizable energy content as a percentage of DE did not differ between lipid sources (average of 99.7%), resulting in a similar trend in responses for ME as observed for DE, where ME content of DCO-1, CWG,PO,and SO was 7,921,7,955,8,535,8,350, and 9,408 kcal/kg experiment (Kerr et al, 2016). Given the differences in BW and ADFI, however, pigs fed the basal diet had similar DE, ME, and ATTD of EE between the 2 experiments.…”

Consequences of using rations with oxidised fats in poultry feeding

“…Tłuszcze (lipidy) w organizmach zwierząt pełnią funkcję zarówno energetyczną, jak i budulcową (strukturalną) (11,12,29,39,42,47,60,66). Tłuszcz jest komponentem wysokoenergetycznym, zawierającym około 35 MJ/kg mieszanki paszowej (19).…”

Energia metabolizável e digestibilidade de aminoácidos de coprodutos do etanol de milho para frangos de corte

“…Esse fator depende se o grão de milho destinado para a produção de etanol estiver contaminado por esses metabólitos, já que as micotoxinas não são destruídas durante o processamento. Deve-se cuidar com o armazenamento deste coproduto e do grão, pois DDGS tem seu teor de extrato etéreo alterado, acarretando na redução da energia do mesmo e criando uma nova fonte de gordura para se utilizar nas dietas(Dozier et al, 2017;Kerr et al, 2016). Essas melhorias realizadas em relação ao processamento trouxeram novos coprodutos, os quais podem ter altas quantidades de proteína (DDG High Protein -DDG HP), fibra e com níveis de 5, 8, 10 a 15% de gordura (DDGS Low Oil e DDGS High Oil) (NRC.…”