D. A. Astuti
Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University

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Journal : Tropical Animal Science Journal

Immune Responses and Egg Productions of Quails Fed Rations Supplemented with Larvae Meal of Black Soldier Fly (Hermetia illucens) Harlystiarini Harlystiarini; R. Mutia; I. W. T. Wibawan; D. A. Astuti
Tropical Animal Science Journal Vol. 43 No. 1 (2020): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.681 KB) | DOI: 10.5398/tasj.2020.43.1.43

Abstract

The larvae of black soldier fly/BSF (Hermetia illucens) seems to be a considerable material as an alternative to antibiotic growth promoters (AGPs) since they are rich in antimicrobial peptides (AMPs) and lauric acid that can improve the health and immune response. This study aimed to evaluate the effect of BSF larvae meal as a replacement of fish meal on production performances, health status, and immune response of quails. The experimental design using completely randomized design consisted of 3 treatments of dose of BSF larvae meal i.e., R0: ration without supplementation of BSF larvae meal; R1: ration supplemented with 6.57% BSF larvae meal to substitute 50% fish meal, and R2: ration supplemented with 13.15% BSF larvae meal to substitute 100% fish meal. The parameters observed were production performances, hematological profile, macrophage phagocytic activity and capacity, and antibody titer against the avian influenza virus. A completely randomized design was arranged with 3 treatments and 5 replications and data collected were analyzed by using one-way analysis of variance (ANOVA). The results showed that ration supplemented with 13.15% BSF larvae meal demonstrated significant effects on the enhancement of egg production and egg mass (p<0.05). Based on hematological profile, the health status of experimental quails was unaltered by the treatments, but immune response of quails fed ration supplemented with 13.15% BSF larvae meal was found to be significantly increased as revealed by the increased average macrophage phagocytic activity and capacity, as well as a higher antibody titer against avian influenza virus (p<0.05). It is concluded that black soldier fly (BSF) larvae meal can be used as an alternative substitution to fish meal up to 13.15%, based on the improvement of immune response and the increase in egg production of quails.
Colostrum Quality of Ewe Fed Flushing Diet Containing EPA and DHA Associated with Lamb Performance A. Nurlatifah; L. Khotijah; R. I. Arifiantini; M. S. Maidin; D. A. Astuti
Tropical Animal Science Journal Vol. 45 No. 3 (2022): 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.2022.45.3.348

Abstract

This study evaluated the effect of a flushing diet containing docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) from lemuru fish oil in ewe ration on colostrum quality and lamb performance. Twenty Garut ewes were divided into four treatments of flushing concentrate: control concentrate (P1), flushing concentrate containing 6% palm oil (P2), flushing concentrate containing 3% lemuru oil and 3% palm oil (P3), flushing concentrate containing 6% lemuru oil (P4). The animal consumed Napier grass and concentrate with a diet ratio of 30%:70% based on dry matter. The experimental ewes were fed flushing rations two weeks before and two weeks after mating continued with 2 weeks before and two weeks after lambing. The ewes and their lambs were put together until weaning time with around two months. The parameters observed in ewes were nutrient consumption and their colostrum qualities. Meanwhile, the lamb parameters measured were nutrient consumption, lamb blood metabolites at birth, and lamb performance. The experimental design used a randomized blocked design (RBD). Analysis of variance (ANOVA) followed by Duncan test was used to analyze data. The results showed that treatment did not significantly affect dry matter consumption in ewe and lamb, ewe’s colostrum quality, and lamb’s blood metabolites. However, the treatment significantly improved (p<0.05) average daily gain and weaning weights of lambs. In conclusion, the flushing ration did not affect the quality of colostrum produced. Feeding of experimental ewes 2 weeks before and 2 weeks after mating continued with 2 weeks before and 2 weeks after parturition with flushing rations of 6% lemuru oil containing EPA and DHA can produce twin lambs with good growth performances such as daily gain and weaning weight similar to the control, which has single litter size.