Judul: Rekayasa Hormonal pada Udang Vaname selama 28 Hari sebagai Pengganti Teknik Ablasi Mata dalam Usaha Percepatan Pematangan Gonad
Abstrak: Animal walfare issues to appropriate things to be considered in the application of eyestalk ablation on gonadal maturation of shrimp in the shrimp hatchery. The purpose of this study was to develop an alternative to eye stalk ablation technique with the hormonal induction of gonad maturation in shrimp vaname. Pregnant mare serum gonadotropin (PMSG) hormone, recombinant growth hormones from Epinephelus lanceolatus (rElGH), and antidopamin (AD) 3 is used to induce gonadal maturation of broodstock shrimp. Hormones administered via the feed for 28 days, with treatment: A. 40 IU PMSG/kg shrimp + 0,01 mg AD/kg shrimp, B. 80 IU PMSG/kg shrimp + 0,02 mg AD/kg shrimp, C. 40 IU PMSG/kg shrimp + 0,01 mg AD/kg + 0,1 mg rElGH/kg shrimp, D. 80 IU PMSG/kg shrimp + 0,02 mg AD/ kg + 0,1 mg rElGH/kg shrimp, E. Ablation, and F. Control. Each treatment consists of 15 individual shrimp with shrimp as replication. Results showed that the shrimp were induced with hormones have matured on day 14, while the shrimp were ablated started on day 7. Treatment hormone 40 IU PMSG + 0,01 mg AD + 0,1 mg rElGH showed the best results for the number of shrimp mature gonads (80%), the percentage of spawning shrimp (66,7%), fecundity (84.600±1.528), hatching rate (41%) compared to other hormone treatments. Performance of hormone treatment 40 IU PMSG + 0,01 mg AD + 0,1 mg rElGH when compared with the results of ablation showed that the number of shrimp mature gonad reached 86%, the percentage of spawning shrimp 93%, fecundity 87%, and hatching 73%. Recombinant growth hormone has no effect on the growth of shrimp weight (P>0,05), but significant effect on fecundity and hatching rate (P<0,05). PMSG hormone, rGH, and antidopamin can induce gonadal maturation in shrimp vaname. Induction hormonal ablation may be an alternative technique in gonadal maturation in shrimp vaname.
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Judul: Rekayasa Hormonal pada Udang Vaname Selama 14 Hari sebagai Pengganti Teknik Ablasi Mata dalam Usaha Percepatan Pematangan Gonad
Abstrak: Induction of gonadal maturation with eyestalk ablation was commonly technique used in the production of shrimp seed. unfortunately, eyestalk ablation technique opposed by animal lovers with issues of animal welfare. In this research, hormonal induction for gonadal maturation of white shrimp was done as an effort to replace the ablation technique. Hormonal induction performed using hormonal pregnant mare serum gonadotropin (PMSG), recombinant growth hormone (rGH), and antidopamin, which was given through the diet for 14 days. Shrimp got a treat: A. 40 IU PMSG/kg shrimp + 0.01 mg antidopamin/kg shrimp; B. 80 IU PMSG/kg + 0.02 mg antidopamin shrimp/kg shrimp; C. 40 IU PMSG/kg shrimp + 0.01 mg antidopamin/kg shrimp + 0.1 mg rGH/kg shrimp; D. 80 IU PMSG/kg shrimp + 0.02 mg antidopamin/kg shrimp + 0.1 mg rGH / kg shrimp; E. Ablation; and F. Control, where each treatment consisted of 15 shrimp. Results showed that shrimp fed treatment B gave the best results among hormone treatments where shrimp can mature gonads from day 14 to the total shrimp mature gonads by 47% up to day 28. On shrimp given treatment C and D tend to have weight fecundity and growth hormone treatment was higher than other woods. However, ablated shrimp begin to mature gonads at day 7 with total shrimp mature gonads was 93%. Recombinant growth hormone has effect on the growth of shrimp weight (P<0.05). Giving PMSG and antidopamin can stimulate gonadal maturation of shrimp. The addition of the combination hormone rGH and antidopamin PMSG can increase fecundity and weight of shrimp broodstock. PMSG and antidopamin can be substitute ablation technique in inducing gonadal maturation in shrimp.
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Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology