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Articles by Widya Paramita Lokapirnasari
Total Records ( 2 ) for Widya Paramita Lokapirnasari
  Sri Hidanah , Sunaryo Hadi Warsito , Tri Nurhajati , Widya Paramita Lokapirnasari and Abdul Malik
  Objective: The objective of the present study was to determine the effects of mangosteen peel and ginger rhizome on the performance and cholesterol levels of heat-stressed broiler chickens. Materials and Methods: One hundred unsexed day-old commercial broiler chicks were fed one of four experimental diets. Diet T1, the control treatment, contained neither mangosteen peel nor ginger rhizome, diets T2 and T3 contained 5% mangosteen peel and 5% ginger rhizome, respectively and diet T4 contained 2.5% of both mangosteen peel and ginger rhizome. Results: The results indicated that the consumption of diet T4 was significantly higher than that of the other three diets (p<0.05). The mean live weight of broilers fed diets T2 and T4 was significantly greater (p<0.05) than that of broilers fed the control diet. The abdominal fat ratios and cholesterol levels of broilers fed diets T3 and T4 were significantly higher (p<0.05) than that of broilers fed the control diet. Conclusion: The performance of broiler chickens can be enhanced by the addition of mangosteen peel or a combination of mangosteen peel and ginger rhizome to feed formulations.
  Gunanti Mahasri , Widya Paramita Lokapirnasari , Muhammad Nur Syamsi and Muhamad Amin
  Objective: This study aimed at investigating the effect of immunostimulant administered at different times on the growth performance of whiteleg shrimp reared at different stocking densities. Materials and Methods: This study used a randomized complete block design (RCBD) with two factors. Factor A was administration times (7th, 14th, 21st and 28th days) and factor B was stocking densities (10 larvae/15 L, 15 larvae/15 L and 20 larvae/15 L). Data in terms of specific growth rate (SGR), feed efficiency (FE) and feed conversion ratio (FCR) were calculated and compared among treatments using Analysis of Variance (ANOVA), followed by Duncan's Multiple Range Test to find a significant difference among treatments. Results: The results showed that SGR, FE and FCR were significantly affected by stocking density and administration time, p<0.05. The highest specific growth rate was obtained from shrimp with a stocking density of 20 shrimps/15 L at the administration of the 7th day. While the best FE is in a stocking density of 15 shrimps/15 L given on the 21st day, then the best FCR was in a stocking density of 20 shrimps/15 L given on the 28th day. Conclusion: SGR, FE and FCR of white shrimp were significantly influenced by the administration time of immunostimulant (whole protein of Zoothamnium penaei ) and stocking densities.
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