Abstract
Fungi is a microorganism that can live in gastrointestinal tract of chicken. One type of fungi is multicellular or filamentous fungi. C.crassa is a species of filamentous fungi that has been isolated in the earlier study and it showed the best probiotic potency in vitro. The obyective of this research was to study the effect of addition of dried culture of C.crassa in feed on intestinal & caecal morphology, bacterial & fungal number, and productivity of indigenous chicken (ayam kampung). Research used completely randomized design with four treatments. The treatments were the level of dried culture in basal diet (0%, 0.25 %, 0.50 % and 0.75 %). Each treatment was replicated 5 times and each replicate consists of 10 chickens. The parameters observed were : villi morphology, number of bacteria and fungi in the duodenum and cecum of chickens aged 1, 21 and 35 days and productivity i.e. feed intake, final body weight and feed conversion. The results showed that 0.50% dried culture of C.crassa could increase the duodenal villi width, decreased the number of bacterial and fungal colonies in duodenum and caecum, but it did not increase productivity. The conclusion : C.crassa could stimulate the duodenal villi development and decreased the number of the bacteria and fungi in the gastrointestinal tract, yet it has no positive impact on the chicken productivity.
Highlights
There are two types of fungi and they can be found in the gastrointestinal tract of chicken (Kompiang et al, 2006; Lumpkins et al, 2010, Yudiarti et al, 2012)
Probiotic has been used as feed additives as it can improve the microbial balance of the digestive tract, improve the development of the small intestine, and increase the productivity of chicken (Fuller, 1992, Daud et al, 2007, Samli et al, 2007, Slizewska et al, 2008, Awad et al, 2009)
Statistical analysis showed there was an effect of C.crassa addition on the number of bacteria and fungi in duodenum
Summary
There are two types of fungi and they can be found in the gastrointestinal tract of chicken (Kompiang et al, 2006; Lumpkins et al, 2010, Yudiarti et al, 2012). We previously have found fifty isolates of filamentous fungi from the gastrointestinal tract of indigenous chicken (Yudiarti et al (2012). In vitro test of this fungi as a probiotic has been done and C. crassa showed the most potential species to be a probiotic. Probiotic has been used as feed additives as it can improve the microbial balance of the digestive tract, improve the development of the small intestine, and increase the productivity of chicken (Fuller, 1992, Daud et al, 2007, Samli et al, 2007, Slizewska et al, 2008, Awad et al, 2009). There is still little studies on the use of filamentous fungi as probiotic in vivo.
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