Osfar Sjofjan

A study: nutrient content evaluation of dried poultry waste urea molasses block (dpw-umb) on proximate analysis

The research purpose was to determine the nutrient content of dried poultry waste molasses block (DPW-UMB). The use of dried poultry waste in the manufacture of the urea-molasses block was as a substitute of urea and could improve the value added in dry season. The treatments used for research were T 1 (15% manure layer chicken and 25% molasses), T 2 (10% manure layer chicken and 30% molasses), and T 3 (20% manure layer chicken and 30% molasses). Chemical analysis: the dried of poultry waste were analyzed for dry matter, crude protein, crude fiber, ash, fat, and gross energy. The statistical formulation diet composed of Microsoft Excel Ver. 2016. The results showed that the 20% manure layer chicken and 30% molasses (T 3 ) were better than T 2 and T 1 on nutrient content with 92.04% Dry Matter (DM), 13.34% Crude Protein (CP), 13.39% Crude Fiber (CF), 37.16% ash, 3.44% fat, but low in Gross Energy (GE) (2631.63 kcal/kg). It could be concluded that dpw-umb T3 were dried of poultry waste contained sufficient levels of gross energy, crude protein, crude fiber, ash, and fat it could be used as feedstuff for ruminants for supplementation with the required nutrients.

The Effect of Corn Substitution with Palm Kernel Meal Treated by Enzyme on Production Performance and Carcass Quality of Broiler

The research was aimed to evaluate the effects of substitution level of corn with palm kernel meal (PKM) untreated and palm kernel meal (PKM) treated by enzyme on production performance and carcass quality of broilers. The method used in this research was experiment using nested of completely randomized design with 2 factors, the main factor was type of palm kernel meal factors consisting of PKM without enzyme (B1) and PKM by mannanase enzyme (B2), and substitution corn level L0 (without substitution), L1 (12.5%), L2 (25%), L3 (37.5%) and L4 (50%). The different among the treatments were tested by Duncan’s multiple range test. The results showed that corn substitution with PKM untreated and PKM treated by enzymes was significantly effect (P<0.01) on feed conversion ratio (FCR), tenderness, meat cholesterol of broilers and income over feed cost (IOFC) and significant effect (P<0.05) on feed intake, but there is no significant difference on body weight, percentages of abdominal fat and water holding capacity (WHC). Furthermore, effect of level corn substitition with PKM nested to PKM untreated and PKM treated by enzyme was significantly effect (P<0.01) on feed intake, body weight, FCR, and tenderness and significant effect (P<0.05) on IOFC, but there is no effect on percentages of abdominal fat, WHC and meat cholesterol. It can be concluded that the corn substitution with PKM treated by enzymes was better than the PKM untreated on production performance and carcass quality of broilers. The optimal level of PKM untreated as corn substitution was 12.5%. While replacement with PKM treated by enzyme can be used up to 25%.

Effect of Supplementing Saccharomyces cerevisiae into Low Quality Local-Based Feeds on Performance and Nutrient Digestibility of Late Starter Local Pigs

The study aimed at evaluating the effect of supplementing Saccharomyces cerevisiae into low quality local-based feeds on performance and nutrient digestibility of late starter to grower stage local pigs. There were total 16 late starter local pigs fed with four treatment feeds based on block design with four pigs in each treatment. The four treatment feeds offered consisted of: commercial starter feeds Charoen Pokphand 552 (T0), basal feeds + yeast 2% of daily feeds requirement (T1), basal feeds + yeast 4% of daily feeds requirement (T2) and basal feeds + yeast 6% of daily feeds requirement (T3). Feed intake, daily weight gain, feed conversion efficiency, protein and crude fiber digestibility were evaluated in the study. The findings showed that supplementing S. cerevisiae into low quality local-based diet improved 0.9%-2.7% feeds’ crude protein, 10%-19% feeds intake, 1%-6% daily weight gain, 3%-4% crude protein digestibility and 4%-5% crude fiber digestibility, but reduced feeds conversion efficiency by 0.3-0.4. The conclusion drawn is that supplementing S. cerevisiae (yeast) up to 6% improved performances of starter local pigs fed low quality feeds and performed the similar result with feeding commercial starter feeds Charoen Pokphand 552. Further research by widening the range and increasing the level of yeast supplementation could be done.

Use of acidifiers and herb-acidifier combinations with encapsulated and non-encapsulated intestinal microflora, intestinal histological and serum characteristics in broiler

The objective of this experiment was to evaluate the use of acidifier and herb-acidifier combinations on intestinal microflora, intestinal histology and serum characteristics of broilers at 35 days of age when fed a diet supplemented with natural acidifier (lactic acid and citric acid), and herb-acidifier combinations (natural acidifier and herbs (garlic and Phyllanthus niruri L.) encapsulated and non-encapsulated. Here, 192 (Lohmann) broiler chicks were fed a negative control diet, positive control diet (tetracycline), 1.2% acidifier non-encapsulated (ANE), 1.2% acidifier encapsulated (AE), 1.2% herb-acidifier combination non-encapsulated (CNE), or 1.2% herb-acidifier combination encapsulated (CE). The variables measured were the total colony of lactic acid bacteria, Escherichia coli and Salmonella sp., intestinal histological characteristics (crypt depth, villi number, villi length, and viscosity) and serum (total protein, serum albumin, and serum globulin). Results showed that during the 35-d growth pe...