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All Journal Journal of the Indonesian Tropical Animal Agriculture Tropical Animal Science Journal
A. Darmawan
Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy

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Performance and Egg Quality of Laying Ducks Fed Diets Containing Cassava (Manihot esculenta Crantz) Leaf Meal and Golden Snail (Pomacea canaliculata) Sumiati Sumiati; A. Darmawan; W. Hermana
Tropical Animal Science Journal Vol. 43 No. 3 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2020.43.3.227

Abstract

The objective of this study was to evaluate the effect of feeding cassava leaf meal and golden snail on performances, chemical, and physical qualities of local duck egg. The experiment used 180 Pajajaran laying ducks of 20 weeks of age and was offered dietary treatments up to 26 weeks of age. The experiment was conducted in a completely randomized design with a 3 x 2 factorial arrangement. The first factor was the treatment of cassava leaf meal consisted of 3 levels, i.e., 0%, 5%, and 10%. The second factor was the treatment of golden snail consisted of 2 levels, i.e., 0% and 10%. Each experimental unit used three replicates and each replicate consisted of ten ducks. The results showed that there was no interaction effect of cassava leaf meal and golden snail treatments on laying duck performances and egg qualities. There were significant effects of cassava leaf meal and golden snail treatments (p<0.05) on egg production, feed intake, egg mass, egg index, and egg yolk color. However, egg weight, feed conversion ratio, yolk fat, yolk cholesterol, and yolk TBARS values, albumen weight, eggshell weight, shell thickness, and Haugh unit values were not affected (p>0.05) by treatments of cassava leave meal and golden snail. The utilization of 10% cassava leaf meal in the diet significantly improved egg production, feed intake, egg mass, and yolk color (p<0.05). The lowest egg index was found in the eggs produced by ducks fed diet containing 5% cassava leaf meal, but it is still within the normal range. Ducks fed a diet containing 5% golden snail significantly had higher feed intake, egg mass, percentage of albumen, and yolk color. It was concluded that there was no interaction effect of cassava leaf meal and golden snail treatments on laying duck performances and egg qualities. A diet containing 10% cassava leaf meal or a diet containing 5% golden snail had the greatest effects on the performance and physical quality of egg without affecting the chemical quality of the egg.
Effects of dietary Lactococcus lactis and Bacillus licheniformis on growth performance and gut health of broilers A. N. Sudrajat; S. Sumiati; I. K. G. Wiryawan; A. Darmawan
Journal of the Indonesian Tropical Animal Agriculture Vol 51, No 3 (2026): September
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.51.3.222-231

Abstract

In this study, the effects of dietary supplementation with Lactococcus lactis and Bacillus licheni-formis on broiler performance, metabolizable energy, intestinal morphology, and ileal microflora were evaluated. A total of 300 unsexed Cobb strain broiler chickens were divided into three treatments. Treatment T1 served as the control with a basal diet plus 0.1% CaCO₃ placebo, T2 received a basal diet supplemented with 0.1% Lactococcus lactis and Bacillus licheniformis at 10⁵ CFU g⁻¹, and T3 received the same probiotic combination at 10⁶ CFU g⁻¹.Probiotic supplementation improved growth performance, as indicated by increased body weight gain, improved feed efficiency (FCR), and higher metabolizable energy. Regarding intestinal microflo-ra, T2 reduced Escherichia coli populations, whereas T3 increased lactic acid bacteria; however, the increase in lactic acid bacteria in T3 was not accompanied by a reduction in Escherichia coli (P<0.05). Treatment T3 produced the lowest FCR value of 1.49 compared to the control (1.60) and the highest metabolizable energy of 3372 kcal kg⁻¹, indicating improved nutrient utilization efficiency.Histological evaluation showed a tendency to increase intestinal villus height, with the highest value observed in treatment T2 (1175.39 μm), suggesting improved intestinal absorptive capacity. It was concluded that Lactococcus lactis and Bacillus licheniformis supplementation has the potential to improve performance, intestinal health, and metabolizable energy in broiler chickens, although the ef-fects on microbial populations depend on the dosage.
Co-Authors A. N. Sudrajat I. K. G. Wiryawan S. Sumiati Sumiati W. Hermana