Apparent Digestibilities And Performance Response Of Piglets Fed Diets Supplemented With Different Fats

This study was conducted to evaluate supplementation of diets with 6%soybean oil(SBO), palm oil(PO), encapsulation palm oil(EPO) or encapsulation coconut oil(ECO). Experiment?was conducted to investigate nutrient digestibility responses when piglet's diets were supplemented with soybean oil, palm oil, encapsulation palm oil,encapsulation coconut oil. Experiment?was conducted to investigate growth performance responses when piglet's diets were supplemented with four fats as listed in Exp.?.In Exp.?, eight weaning barrows at an average weight of 8±1kg were allotted to a4×4 Latin-square design to four treatments with two pigs per treatment and one pig per replicate. Four different fats, added at 6% to a corn-soybean meal-dried whey diet, were tested: soybean oil, palm oil, encapsulation palm oil, encapsulation coconut oil. In Exp. ?,a total of 640 pigs weaned at 11±1d of age at average 4.1 kg were allotted to a randomized complete block experiment on the basis of weight, litter, sex to four dietary treatments in for 22-d growth trial. The four treatments diets were same to Exp.?.The results were listed below:1. Digestible energy(GE) in PO group was greatly lower than that of other three fat sources(P<0.01), no significant difference exists between EPO and SBO groups(P>0.05),ECO group had a higher GE than SBO and EPO groups(P<0.05). Metabolic energy(ME),energy digestible rate(DE/GE), energy metabolic rate(ME/GE) in PO group were greatly lower than other three fats(P<0.01), except PO group, there were no significant differences among other three fats(P>0.05).2. The apparent fat digestibility(AFD) in pigs fed PO was extremely lower to the pigs fed three other fats(P<0.01); Compared with ECO group, EPO groups had a lower AFD(P<0.05), no difference was observed for SBO group(P>0.05); SBO group had a higher AFD than EPO group(P<0.05). Furthermore, AFD were 108.0% greater,3.9% and6.6% lower for EPO fed pigs compared respectively with PO, SBO and ECO fed pigs.Among four dietary treatments, there were no significant differences in digestibility of crude protein(P>0.05).3. Apparent calcium digestibility was inferior when pigs were provided the PO diet compared with pigs fed SBO, EPO or ECO diets(P<0.01), except PO group, there were no significant differences among other three fats(P>0.05). Meanwhile apparent phosphorus digestibility in PO group was lower to EPO group(P<0.01) and ECO group(P<0.05), except PO group, there were no significant differences among other three fats(P>0.05).4. During 11 d postweaning, compared with PO and SBO groups, pigs fed EPO and ECO diets consumed more average daily intake, but the difference was not significant(P=0.232). Average daily gain(ADG) was not effected by the treatments(P>0.05).There was no significant difference in F/G among four oil groups(P>0.05), but compared with PO, SBO and EPO decreased F/G by 9.62% and 3.85% respectively.5. No significant difference was observed in survival rate among four dietary treatments during 11 d postweaning(P>0.05). However, diarrhea rate in PO group was higher than EPO group(P<0.05) and extremely higher than ECO group(P<0.01), except PO group, there were no significant differences among other three fats(P>0.05).6. At 11 d postweaning, pigs fed different fats had no significant differences in serum triglyceride(TG) ? low-density lipoprotein cholesterol(LDL-C) and serum urea nitrogen(SUN)(P>0.05). However, serum total cholesterol(TC) in pigs fed PO diets was lower compared with ECO(P<0.05) and SBO(P<0.01), except PO group, there were no significant differences among other three fats(P>0.05). Serum high-density lipoprotein cholesterol(HDL-C) in PO group was lower than SBO and ECO groups(P<0.05), extremely lower than EPO group(P<0.01), except PO group, there were no significant differences among other three fats(P>0.05).In summary, the results indicate that: Compared with palm oil, the encapsulation palm oil improved the nutrients utilization in the weaning pigs. Especially, compared with palm oil, the encapsulation palm oil increased apparent fat digestibility by 108%, but lower to soybean oil and encapsulation coconut oil. Moreover, the encapsulation coconut oil and encapsulation palm oil decreased the piglet's diarrhea rate.