A meta-analysis was performed to evaluate the effects of supplementary n-3 polyunsaturated fatty acids ( PUFA ) sources in the diet on the formation of some important n-3 PUFA contents in eggs and to assess factors contributing to the conversion efficiency of omega-3 in laying hens. A dataset was constructed from 34 studies examining the impact of dietary inclusion with ingredients rich in n-3 PUFA on fatty acids profile and production performance of laying hens. The eligibility criteria were developed to obtain studies reporting required information with sufficient quality. The mixed model methodology was employed where the “study” was set as random effects and fatty acid ( FA ) supplements as fixed effects. Several factors were included in the models as covariates. Discrete analysis for sources of FA was also performed to compare their effects on FA formation in eggs. Significant linear positive associations were observed between the concentration of α-linolenic acid ( ALA ), total n-3 PUFA, and the ratio of linoleic acid ( LA ) to ALA (LA/ALA) in diets with the formation of eicosapentaenoic acid ( EPA ), docosahexaenoic acid ( DHA ), total n-3 PUFA, and n6/n3 ratio in egg ( P < 0.05) with different magnitudes. ALA and total n-3 PUFAs concentration had no relationship with cholesterol concentration, feed intake, and egg weight. Prediction models for DHA formation was higher for ALA as predictor variables (slope = 0.482; R 2 = 0.684) than n-3 PUFAs (slopes = 0.998, R 2 = 0.628). Significant interactions were found on the level of ALA × FA sources and n-3 PUFA × FA sources. Fish oil ( P = 0.0148, R 2 = 0.732) improved the prediction equation to estimate DHA formation. To conclude, levels of ALA, n-3 PUFA, and the ratio of LA/ALA can be used as predictor variables to estimate the formation of n-3 fatty acids in eggs. It was confirmed that although all n-3 FA sources had a positive correlation on DHA and n-3 PUFA deposition, however, fish oil showed the highest prediction model for DHA formation across all FA sources included in the dataset.

This study aimed to see the effect of fermented Turbinaria murayana seaweed using Local Microorganisms (LMo) made from fruit waste in rations on the quality of quail eggs. This study used a completely randomized design of 5 treatments with four replications. The treatment gave Turbinaria murayana seaweed fermented products with different levels, namely 0, 5, 10.15, and 20% in the ration. Research data were analyzed using analysis of variance (ANOVA), and differences between treatments were tested using the Duncans Multiple Range Test (DMRT). The study's results were that the administration of Turbinaria murayana seaweed fermentation products with different levels showed a very significant effect (P≤ 0.01) on the cholesterol content of egg yolks. However, no significant effect (P≥0.05) on egg weight, shell thickness, shell percentage, yolk percentage, white percentage and egg fat content. This study concludes that Turbinaria murayana seaweed fermentation products can be used in laying quail rations up to 20% by producing low-cholesterol eggs.

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INTISARIPenelitian ini bertujuan untuk mengkaji pengaruh penambahan jangka panjang herbal alami: tepung kulit manggis (TKM) dan non-herbal: vitamin E (VE) di dalam ransum terhadap organ pencernaan, aksesori, reproduksi dan karkas ayam petelur. Ayam yang digunakan adalah 160 ekor ayam petelur strain Lohman (umur 24 minggu) yang dipelihara selama 11 minggu. Rancangan yang digunakan adalah rancangan acak lengkap dengan 4 kelompok perlakuan dan 4 ulangan (setiap ulangan terdiri dari 10 ekor ayam). Perlakuan terdiri dari: R0 (pakan kontrol), R1 (R0 + 1 g TKM/kg pakan) dan R2 (R0 + 2 g TKM/kg pakan), R3 (R0 + 200 mg VE/kg pakan). Variabel yang diamati adalah: organ pencernaan (persentase tembolok, gizzard, usus halus, dan sekum), organ aksesori (persentase jantung, limfa, ginjal, hati dan empedu), organ reproduksi, bobot hidup, dan karkas ayam petelur. Hasil penelitian menunjukkan bahwa semua perlakuan (R0, R1, R2 dan R3) tidak mempengaruhi organ pencernaan (persentase tembolok, gizzard, usus halus, dan sekum), organ aksesori (persentase jantung, limfa, ginjal, hati, dan empedu), organ reproduksi, bobot hidup dan karkas ayam petelur. Dapat disimpulkan bahwa penambahan jangka panjang tepung kulit manggis 1-2 g/kg pakan dan vitamin E 200 mg/kg di dalam pakan tidak memberikan pengaruh terhadap organ pencernaan, organ aksesori, organ reproduksi, bobot hidup dan karkas ayam petelur.(Kata kunci: Ayam petelur, Karkas, Organ pencernaan, Tepung kulit manggis, Vitamin E) (percentage of crop, gizzard, small intestine and ceca), accesory organs (percentage of heart, spleen, kidney, liver and bile) ABSTRACT This research aimed to study long-term addition natural herbal: Mangosteen pericarp meal (MPM) and non-herbal: vitamin E (VE) in the diet on digestive organs, accessory organs, reproductive organs, and carcass of laying hens. A total of 160 laying hens of Lohman strains (24-wk-old) were used, the observation was conducted for 11 weeks. Designs were a completely randomized design with four treatments and four replications (10 birds each). The treatments consisted of R0 (control diet), R1 (R0 + 1 g MPM/kg diet), R2 (R0 + 2 g MPM/kg diet) and R3 (R0 + 200 mg VE/kg diet). The variabel observation was digestive organs

This research aimed to study the supplementation effects of mangosteen pericarp meal (MPM) and vitamin E (VE) in the diets on the egg quality and blood profile of laying hens. This research used 160 laying hens of Lohman strains 24 weeks of age. The observation was conducted for 11 weeks. A completely randomized design with four treatments and four replications (10 birds each) was used in this experiment. The treatments consisted of R0 (control diet), R1 (R0 + 1 g MPM/kg ration), R2 (R0 + 2 g MPM/kg ration) and R3 (R0 + 200 mg VE/kg ration). Variables measured were egg quality, yolk cholesterol, and blood profiles. The data were analyzed by using analysis of variance (ANOVA) and any significant difference between the treatment means were further tested by Duncan's Multiple Range Test. The results showed that supplementation of 1 g MPM/kg ration in the diet significantly (P<0.05) decreased blood triglycerides compared with the control, laying hens fed with diet suplemented with of 2 g MPM/kg ration, and laying hens with diet suplemented with 200 mg VE/kg ration. Supplementation of MPM and VE did not affect (P>0.05) egg quality (except shell thickness), blood cholesterol, and HDL, respectively. In conclusion, supplementation of 1 g MPM/kg in the diet of laying hens could decrease blood triglycerides.