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ThesisItem Open Access Performance of large white yorkshire on feeding banana stem and mixed (banana stem and taro) silage fermented with probiotics(College of Veterinary Science, Assam Agricultural University, Khanapara Campus, 2022-03) Das, Biren Kumar; Saikia, B NA study was conducted on Large White Yorkshire (LWY) pigs to assess the effect of feeding banana pseudo-stem silage and mixed silage of banana pseudo-stem and Taro (Colocasia esculenta) fermented, anaerobically, with Lactobacillus acidophilus and Enterococcus faecium. Eighteen LWY piglets, average body weight 15.097 ± 0.71 kg, were randomly divided into three groups (T1, T2 and T3) in a completely randomised block design with 6 piglets in each group. Three experimental iso-nitrogenous and iso-caloric diets were prepared and fed in two phase feeding programme i.e. growing phase (up to 35 kg body weight) and finishing phase (above 35 kg body weight) as per BIS, 2001 where T1 (control) group was fed basal diet without silage while T2 and T3 group received diet with 25 % replacement of cereal (maize) grain of the basal diet with banana pseudo-stem silage and mixed silage of banana pseudo-stem and Taro. During 180 days of feeding trial, the body weight changes of the LWY pigs in growing phase as well as finishing phase varied significantly (P<0.01) among the treatment groups. There was significant difference (P<0.05) in fortnightly dry matter intake of the experimental pigs in the growing phase. ADG (g/h/d) and FCE of the growing-finishing pigs in the growing phase were also found to be significant (P<0.05) among the experimental pigs. Digestibility of dry matter and other nutrients were studied by conducting digestibility trial in growing and finishing phase of the experimental pigs. In the growing phase digestibility coefficient of DM, CP, CF & EE differed significantly (P<0.05 & P<0.01) among the treatment groups, but digestibility coefficient of OM and NFE did not differ (P>0.05) among the treatment groups. In the finishing phase digestibility coefficient of DM, OM, CP, CF, EE and NFE did not differ (P>0.05) among the experimental groups. There was no significant (P>0.05) difference in biochemical parameters of SGPT, SGOT, glucose, total protein, cholesterol, HDL and LDL among the groups. The carcass traits like dressing percentage, back fat thickness, loin eye area, per cent weight of whole sale cuts of pork, edible and inedible offal were not affected (P>0.05) by the partial replacement of cereal (maize) grain in the basal diet with silages. Drip loss (%), water holding capacity and pH of Longissimus dorsi muscle did not differ (P>0.05) among the treatment groups. Per cent moisture, protein, fat and ash of the Longissimus dorsi muscle were also not affected (P>0.05) by the partial replacement of cereal (maize) grain in the basal diet with silages. Analysis of variance of histomorphological measures of villus height, crypt depth, villus height:crypt depth and average villus surface area of duodenum and jejunum showed that 25% replacement of cereal (maize) grain of the basal diet with silages did not have adverse effect (P>0.05) in the experimental pigs. In economic analysis, the cost of feed per kg weight gain was found to be reduced (P<0.05) in T3 group pigs compared to T1 (control) and T2 group pigs. It was concluded that 25 % substitution of cereal (maize) grain from the basal diet by mixed silage of banana pseudo-stem and Taro in growing-finishing LWY pigs had no adverse effect on growth performance, serum biochemical profile and carcass characteristics, and had reduced the cost of pig production.
