A total of 216 Ross 308 broiler chicks were randomly allocated to a 3 × 2 factorial arrangement, consisting of three dietary treatments (palm oil [PO], canola oil [CO], and rice bran oil [RBO], each at 40 g/kg) and two sexes (male and female). Each dietary treatment was replicated 6 times per sex (six male and six female replicates), resulting in a total of 12 replicates per treatment, with 6 birds per replicate. Results showed that different oil sources had no significant effect (P > 0.05) on body weight, weight gain (WG), feed intake, and feed conversion ratio (FCR). The effects of dietary oil sources on duodenal morphology in broiler chickens revealed several significant outcomes. In males, feeding CO tended to increase villus height, and significantly reduced crypt depth, resulting in a higher (P < 0.001) VH/CP ratio compared to PO and RBO. In females, feeding RBO produced the most favourable morphology, with the highest villus height, lowest crypt depth, and greatest VH/CP ratio among treatments (P < 0.001). While dietary oil sources did not significantly affect the relative weights of internal organs, a significant effect (P = 0.01) of sex was observed, with female broiler chickens having greater gizzard weights than males. Feeding RBO increased liver redness and crude protein content (P = 0.01 and P < 0.001, respectively). Females showed higher redness (P = 0.002), while males tended to have greater protein levels (P = 0.06). Serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) levels were not significantly affected (P > 0.05) by sex, oil source, or their interaction. In conclusion, dietary inclusion of PO, CO, or RBO resulted in comparable growth performance in broiler chickens, with no significant differences detected. However, the type of oil may still impact specific physiological aspects, especially duodenal morphology and liver composition and quality. Further studies are needed to confirm these findings across breeds and environments.
扫码关注我们
求助内容:
应助结果提醒方式:
