ผลของการเสริมวัสดุเพาะเห็ดถั่งเช่าสีทองต่อสมรรถภาพการเจริญเติบโตค่าเมแทบอไลท์ในกระแลลือด และคุณภาพชากของไก่เนื้อ

Abstract

This research aimed to examine the effect of supplementing spent mushroom (Cordyceps militaris) substrate (SMCM) for 5 feeding levels classified into feeding level 1: basic diet (0.0), feeding level 2: basic diet 0.1% supplemented with chlortetracycline antibiotic (CTC 0.1), and feeding levels 3-5: basic diet supplemented with SMCM at amounts 0.1%, 0.25%, and 0.5% on growth performance, blood metabolites, and carcass quality of broiler chickens. The study was carried out in 500 males of Ross 308 broiler breed aged 1 day with 5 feeding levels of SMCM. Each feeding level would be repeated 4 times. Each repetition would be for 25 broiler chickens. The study was a 36-day trial period. A randomized trial plan was used throughout the study. The results of this study indicated that feed-intake amounts, feeding efficiency, and increased weights/1 kg of the feed intake at all ages of all feeding levels of broiler chickens had no statistical difference (P>0.05). Body weights of broiler chickens at ages 0-21 days, feeding level 2, and feeding level 4 (CTC 0.1 and 0.25) had statistical significance higher than those of broiler chickens classified underfeeding levels 1, 3, and 5 (P<0.01). However, the growth rate/body/day of broiler chickens underfeeding level 5 (0.5) had the lowest value but had no statistical difference from those underfeeding level 1. The broiler chickens underfeeding level 2 (CTC 0.1) had the highest growth ratio gains/day. Also, the broiler chickens at ages 21 days and 36 days which had been supplemented with SMCM had lower blood cholesterol values with statistical significance (P<0.05) than those of broiler chickens that did not supplement with SMCM. The study also found that broiler chickens aged 36 days supplemented with SMCM had values of LDL cholesterol in blood with statistical significance (P<0.05) lower than those without supplemented SMCM. For carcass traits and carcass composition of broiler chickens under 5 feeding levels, the study found no statistical difference (P>0.05).