Broiler litter supplementation improves storage and feed-nutritional value of sawdust-based spent mushroom substrate.
A study was conducted to determine the effect of broiler poultry litter (BL) supplementation to spent mushroom substrate (SMS) on its storage and feed-nutritional value improvement. In Exp. 1, the sawdust-based SMS from a king oyster mushroom (Pleurotus eryngii) farm was mixed with BL at 0%, 25%, 50%, 75% and 100% levels on a wet basis and deepstack stored for short-term (1-wk) and long-term (3-wk). At 1-wk of short-term deepstack storage, SMS with more than 50% BL levels showed favorable conservation. At 3-wk of long-term storage, all treatments except for BL 100% had a serious fungal problem. Based on chemical parameters, BL-blending to SMS practically improved the feed-nutritional value of the mixtures. Since the deepstacking method was not effective for long term storage, in Exp. 2 SMS ensiled with or without BL was attempted to improve long-term (3-wk) storage. All the ensiled treatments (SMS 100%, SMS 75%+BL 25% and SMS 50%+BL 50%) had desirable fermentation. As in deepstacking, BL-blending to SMS improved the nutritive value of the ensiled mixtures. The populations of total bacteria, lactic acid bacteria and yeast were highest (P<0.05) when 75% SMS was blended with 25% BL. In conclusion, blending 50% or more BL with SMS was effective for the short-term (1-wk) deepstack storage. For long-term (3-wk) storage of SMS, an ensiling method was effective with or without the addition of BL.
Kwak
W S
WS
Animal Science, School of Life Resource and Environmental Sciences, College of Natural Sciences, Konkuk University, Danwol-dong 322, Chung-Ju, Chung-Buk 380-701, Republic of Korea. wsk@kku.ac.kr <wsk@kku.ac.kr>
Jung
S H
SH
Kim
Y I
YI
D000363:Agaricales / Q000254:growth & development*; D000818:Animals; D002645:Chickens; D005243:Feces / Q000737:chemistry*; D005285:Fermentation; D006920:Hygiene; D008031:Lignin / Q000032:analysis; D009753:Nutritive Value; D011134:Polysaccharides / Q000032:analysis; D012820:Silage; D013696:Temperature; D018505:Waste Management / Q000379:methods*
D011134:Polysaccharides; C007916:hemicellulose; D008031:Lignin