scholarly journals Stimulation of gonad maturation in mullet fish Mugil dussumieri using MT, E2, hCG, and Ovaprim hormone

2019 ◽  
Vol 18 (1) ◽  
pp. 9-22
Author(s):  
Tatak Dwi Cahyono ◽  
Muhammad Zairin Junior ◽  
Odang Carman
Keyword(s):  
Body Length ◽  
Egg Size ◽  
Gonadosomatic Index ◽  
Physiological Solution ◽  
Gonad Maturation ◽  
Gonad Maturity ◽  
And Control ◽  
Egg Diameter ◽  
Estradiol 17Β ◽  
Stimulation Of

ABSTRACT The present study is a preliminary research for producing mullet fry to aquaculture. The research aimed to evaluate stimulation of gonad maturation in mullet (Mugil dussumieri) using hormones. The method used for research was completely randomized design consisting of three treatments and each individual replication was repeated three times. Two experiments were conducted separately with different treatments. First experiment used 9-14.7 cm body length of fish treated with different hormone injections i.e. 4 mg/kg 17α-methyltestosterone (MT), 0.07 mg/kg estradiol-17β (E2), and 0.5 ml/kg 0.9% physiological solution as control. Second experiment used 10-31 cm body length fish treated with 750 IU/kg chorionic gonadotropin (hCG), 0.5 ml/kg Ovaprim, and 0.9% physiological solution as control. Gonadosomatic index (GSI) value of the first experiment on day 60 showed that GSI of E2 treatment (1.31±0.94%) was higher than both MT treatment (1.00±0.51%) and control (0.54±0.20%). On the other hand, the second experiment on day 60 showed that GSI of hCG treatment (7.18±0.59%) was higher than both Ovaprim treatment (3.29±2.66%) and control (6.72±0.32%). Egg diameter frequency distribution for control in the first experiment on day 30 showed that egg size ranged from 9−144 µm. Egg diameter for E2 and MT treatments on day 60 showed that egg size ranged from 9−243 µm and were higher than control. In the second experiment, egg diameter on day 30 for control showed that egg size ranged from 9-144 µm, hCG treatment showed egg size ranged from 9−441 µm, while Ovaprim egg size ranged from 9-111 µm. Blood glucose, blood cholesterol, testosterone and estradiol hormone level in the first and second experiment showed no significant difference. The results showed that estradiol-17β and 17α-methyltestosterone induction in 9-14.7 cm body length mullet increase gonad maturity to stage II while hCG induction in 10-31 cm body length mullet increase gonad maturity to stage III. Keywords : estradiol-17β, hCG, 17α-methyltestosterone, Mugil dussumieri, Ovaprim ABSTRAK Penelitian merupakan rintisan untuk menghasilkan benih ikan belanak dalam wadah budidaya. Penelitian ini bertujuan untuk mengevaluasi pematangan gonad ikan belanak Mugil dussumieri menggunakan hormon. Penelitian dilakukan menggunakan rancangan acak lengkap yang terdiri dari tiga perlakuan dan tiga kali ulangan individu. Terdapat dua percobaan dengan perlakuan berbeda dan dilakukan secara terpisah. Percobaan pertama menggunakan ikan berukuran 9−14.7 cm dengan hormon 17α-metiltestosteron (MT) 4 mg/kg, estradiol-17β (E2) 0.07 mg/kg dan kontrol larutan fisiologis 0.9% 0.5 ml/kg. Percobaan kedua menggunakan ikan berukuran 10−31 cm dengan human chorionic gonadotropin (hCG) 750 IU/kg, Ovaprim 0.5 ml/kg dan kontrol larutan fisiologis 0.9 % 0.5 ml/kg. Nilai gonadosomatic index (GSI) percobaan pertama pada hari ke-60 menunjukkan bahwa pemberian estradiol-17β (1.31±0.94%) lebih tinggi dibandingkan 17α-metiltestosteron (1.00±0.51%) dan kontrol (0.54±0.20%). Hasil percobaan kedua pada hari ke-60 nilai GSI menunjukkan bahwa pemberian hCG (7.18±0.59%) lebih tinggi dibandingkan Ovaprim (3.29±2.66%) dan kontrol (6.72±0.32%). Sebaran frekuensi diameter telur pada percobaan pertama untuk kontrol hari ke-30 menunjukkan kisaran 9−144 µm. Sebaran frekuensi diameter telur untuk estradiol-17β dan 17α-metiltestosteron hari ke-60 menunjukkan kisaran 9−243 µm lebih banyak dibandingkan kontrol. Sebaran frekuensi diameter telur pada percobaan kedua untuk kontrol hari ke-30 menunjukkan kisaran 9−144 µm, hCG 9−441 µm sedangkan Ovaprim hanya 9−111 µm. Kadar glukosa darah, kolesterol darah, hormon testosteron dan estradiol pada percobaan pertama dan percobaan kedua menunjukkan tidak terdapat perbedaan yang nyata. Hasil penelitian menunjukkan bahwa induksi hormon estradiol-17β dan 17α-metiltestosteron pada ikan berukuran 9−14.7 cm dapat meningkatkan kematangan gonad mencapai TKG II sedangkan induksi hormon hCG pada ikan berukuran 10−31 cm dapat meningkatkan kematangan gonad mencapai TKG III. Kata kunci : estradiol-17β, hCG, 17α-metiltestosteron, Mugil dussumieri, Ovaprim

scholarly journals Profile of Catfish (Clarias sp) Oocyte Exposed by Laserpuncture

2014 ◽  
Vol 5 (2) ◽  
pp. 188
Author(s):  
Dyah Hariani ◽  
Marhendra A. P. W ◽  
Aulanni Am ◽  
Suprayitno E
Keyword(s):  
Oocyte Maturation ◽  
Gonadosomatic Index ◽  
Gonad Maturation ◽  
Maturity Stage ◽  
Oocyte Diameter ◽  
Brood Stock ◽  
Gonad Maturity ◽  
Post Exposure ◽  
Egg Diameter

Anexposure of low-powered laserpuncture at reproductive acupoint of catfish brood stock is known stimulate oocyte maturation. However, the profile of oocyte resulted from laserpuncture exposure has not been known. The present study aimed to identify the profile of catfish (Clarias sp.) oocyte in post-exposure laserpuncture. A total of 48 catfishes with ages of 8-9 months was grouped into two, i.e. fishes were exposed with laserpuncture and without exposure to laserpuncture (control) with 3 replications. Laserpuncture exposure was conducted once a week until the brood stock matured. Profile of oocyte such as, the GSI value, egg diameter, total of oocytes and the gonad maturity stage were examined. The results showed that laserpuncture exposure at the catfish reproductive acupoint could trigger the oocyte development without reducing quality of the oocyte indicated by the increase of gonadosomatic index (GSI), oocyte diameter, total of oocytes and gonad maturity stage similar to control. Moreover, laserpuncture exposure accelerated the gonad maturation, three weeks faster than control.

Studies on fecundity and spawning of blue crab (Callinectes Amnicola) in Cross River Estuary

2021 ◽  
Vol 36 (1) ◽  
pp. 75-82
Author(s):  
J. Otoyo ◽  
S.M. Ameh ◽  
O.K. Achema
Keyword(s):  
Blue Crab ◽  
Egg Size ◽  
Gonadosomatic Index ◽  
Carapace Width ◽  
River Estuary ◽  
Hepatosomatic Index ◽  
Cross River ◽  
The Cross ◽  
Cross River Estuary ◽  
Egg Diameter

Studies on identification of species, fecundity and development stages of blue crab, (Callinectes amnicola) were investigated at the Cross River Estuary between the months of December, 2018 and May, 2019. The parameters used for the study were gonadosomatic and hepatosomatic indices, egg diameter and counts. All measurements followed standard procedures. Gonadosomatic index was at its peak in December (88.9) and April (83.3). This coincided with the peak in egg size suggesting that spawning occurred twice within the period.The low values of hepatosomatic index around December (1.20) and April (0.45) added to confirm the spawning in these months. The species spawns at a mean egg size of 17.55mm. The dimension of crabs examined were in the following range: carapace length 40.0 to 70.0mm, carapace width, 5.0 to 60mm and body weight 40.0 to 140.0g. The relationship between fecundity and weight of crab was  significant (r = 0.295: p<0.05), indicating positive correlation. Absolute fecundity of the species ranged between 1,375 and 225,132 eggs. The smallest crab with egg had a carapace width of 39.5mm and weight of 46.9g. Spawning at this size seems to be a strategy adopted by the species to cope with exploitation pressure. The result of this study revealed that C. amnicola had a high reproductive potentials. Hence, adequate regulation is required to enhance sustainability of the species in the Cross River Estuary.

scholarly journals The Effect of Vitamin E Supplement in the Diet on Gonad Maturation of Nilem (Osteochilus hasselti, CV)

2017 ◽  
Vol 19 (1) ◽  
pp. 1
Author(s):  
Nurbety Tarigan ◽  
Iman Supriatna ◽  
M. Agus Setiadi ◽  
Ridwan Affandi
Keyword(s):  
Vitamin E ◽  
Gonadosomatic Index ◽  
Critical Role ◽  
Gonad Development ◽  
Feed Additives ◽  
Hepatosomatic Index ◽  
Gonad Maturation ◽  
Fish Reproduction ◽  
Gonad Maturity

The aim of this study was to examine the effect of vitamin E on gonad maturation and determining the best doses in improving gonad maturation in nilem fish. In this study used a flockof fishbrood which is never experienced spawning. There are 4 doses of vitamin E which used in this research following by 0, 125, 250, and 375 mg/kg. The results showed that fortifiedof vitamin E which were in feed significantly affected to the percentage of gonad development, gonadosomatic index (GSI), hepatosomatic index (IHS), fecundity, the diameter of eggs, and the percentage of egg maturity at P<0.05. The result showed that the best dose of vitamin E to reach gonad maturity was 375 mg kg-1 with six weeks maintenance. The percentage of gonad maturity was 100%, IGS was 11.50%, IHS was 0.34%, fecundity was 23.484 eggs/individual, the diameters of the eggs were 0.31 mm, and the percentage of mature eggs was 64.44%. These results supported the potential of feed additives such as vitamin E plays a critical role in enhancing gonad maturation in nilem fish thereby providing methods to improve fish reproduction

scholarly journals Kematangan gonad dan tipe pemijahan ikan lais, Ompok miostoma (Vaillant, 1902) di Daerah Aliran Sungai Mahakam Kalimantan Timur

2018 ◽  
Vol 17 (2) ◽  
pp. 201
Author(s):  
Jusmaldi Jusmaldi ◽  
Dedy Duryadi Solihin ◽  
Ridwan Affandi ◽  
M F Rahardjo ◽  
Rudhy Gustiano
Keyword(s):  
Endemic Species ◽  
Egg Size ◽  
Histologic Examination ◽  
Gonad Maturation ◽  
Gonad Maturity ◽  
Maturity Stages ◽  
East Kalimantan ◽  
Maturation Stages ◽  
Examination Methods ◽  
Males And Females

Silurid catfishes O. miostoma (Vaillant, 1902) is an endemic species in Mahakam Watershed East Kalimantan. Biology reproduction aspect of this species is not yet known. The purpose of this study was to determine the stages of gonad maturation characteristics, egg size, and spawning type. Fish sampling conducted monthly from November 2013 to Oc-tober 2014, using many gears at four locations in Mahakam Watershed, i.e: Semayang Lake, Belayan River, Siran River and Tering River. To determine the stages of gonad maturation in silurid catfishes were carried out by morphologic and histologic examination methods. Spawning fish type was determined based on the distribution of eggs diameter. The results of this research showed that there are five gonad maturation stages of males and females of silurid catfishes. Dis-tribution of eggs diameter in gonad maturity stages ranges from 0.54 – 1.30 mm with simultaneous spawning type.AbstrakIkan lais O. miostoma (Vaillant 1902) adalah spesies ikan endemik di Daerah Aliran Sungai (DAS) Mahakam Kaliman-tan Timur. Aspek biologi reproduksi ikan ini belum pernah diketahui. Penelitian ini bertujuan untuk menentukan karak-teristik tahap kematangan gonad, ukuran telur, dan tipe pemijahan. Pengambilan contoh ikan dilakukan setiap bulan, dari bulan November 2013 sampai Oktober 2014 menggunakan berbagai jenis alat tangkap pada empat lokasi penelitian di DAS Mahakam yang meliputi: Danau Semayang, Sungai Belayan, Sungai Siran, dan Sungai Tering. Penentuan ting-kat kematangan gonad ikan lais dilakukan dengan metode pemeriksaan morfologis dan histologis. Tipe pemijahan ikan lais ditentukan berdasarkan sebaran diameter telur. Hasil penelitian menunjukkan ada lima tahap kematangan gonad jantan dan betina ikan lais. Sebaran diameter telur pada tahap matang gonad berkisar dari 0,54 - 1,30 mm dengan tipe pemijahan serempak.

ESTRUS AND PREGNANCY IN PRIMIPAROUS SOWS TREATED WITH PREGNANT MARE’S SERUM GONADOTROPIN OR ESTRADIOL-17β AND PROGESTERONE

1976 ◽  
Vol 56 (4) ◽  
pp. 693-698 ◽  
Author(s):  
G. W. DYCK
Keyword(s):  
Pregnancy Rates ◽  
History Of ◽  
Serum Gonadotropin ◽  
The Mean ◽  
And Control ◽  
Mean Time ◽  
Estradiol 17Β ◽  
Stimulation Of

Over a 3-yr period, the effectiveness of pregnant mare’s serum gonadotropin (PMSG-1,500 IU) or estradiol-17β (1 mg) plus progesterone (2 mg) for the stimulation of post-weaning estrus and conception in primiparous sows from a herd with a history of post-weaning anestrus was evaluated. On the day after weaning, an intramuscular (i.m.) injection of PMSG or steroids was given to 49 and 51 sows, respectively. Fifty untreated sows served as controls. Treated sows in estrus by day 8 and control sows in estrus by day 40 were bred on the 2nd day of estrus. Serviced sows were killed at day 25 of pregnancy or on the day after return to estrus. The remaining sows were killed when in estrus or between days 41 and 45 after weaning. By day 8, more (P < 0.01) PMSG-treated (98.0%) sows were in estrus than either the steroid-treated (64.7%) or control (66.0%) sows. By day 14, fewer (P < 0.05) steroid-treated than control sows were in estrus (64.7 vs. 82.0%). The mean interval between weaning and estrus for sows in estrus by day 8 was less for the PMSG (P < 0.01) - and steroid (P < 0.05) - treated sows than for the control sows (3.83 ± 0.11 and 4.36 ± 0.28 vs. 5.12 ± 0.23 days). For the steroid-treated and control sows in estrus after day 8, the mean time to estrus was 34.6 ± 3.5 and 21.2 ± 2.8 days, respectively (P < 0.01). Pregnancy rates were similar for the PMSG and steroid treatments (57.1 and 47.0%), and lower than for the control sows (84.0%). The PMSG-treated animals had larger litters (16.4 ± 1.0 embryos) than either the steroid-treated (12.8 ± 1.1 embryos) or control (11.3 ± 0.8 embryos) animals.

scholarly journals BIOREPRODUKSI DAN HUBUNGAN PANJANG-BOBOT TERHADAP FEKUNDITAS PADA IKAN LALAWAK (Barbonymus balleroides)

2017 ◽  
Vol 11 (4) ◽  
pp. 339 ◽  
Author(s):  
Irin Iriana Kusmini ◽  
Fera Permata Putri ◽  
Vitas Atmadi Prakoso
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Gonadosomatic Index ◽  
Natural Habitat ◽  
The Body ◽  
Gonad Weight ◽  
Length Relationship ◽  
Negative Impacts ◽  
Egg Diameter ◽  
The Relationship

Eksploitasi ikan lalawak (Barbonymus balleroides) yang berlebihan dari alam mengakibatkan langkanya jenis ikan ini di beberapa perairan aslinya. Sebelum ikan ini diperkenalkan sebagai komoditas budidaya, masih diperlukan lebih banyak lagi informasi mengenai aspek bioreproduksi ikan lalawak yang telah dipelihara pada lingkungan budidaya. Tujuan dari kegiatan ini adalah untuk mengevaluasi produktivitas ikan lalawak yang dipelihara pada lingkungan budidaya melalui pengamatan bioreproduksi dan hubungan panjang-bobot terhadap fekunditas. Sampel induk ikan lalawak betina yang diambil sebanyak 15 ekor, kemudian dipilih lima ekor induk betina yang telah matang gonad dengan ciri-ciri seluruh badannya terasa kasar apabila diraba, perut membesar ke arah posterior dan terasa lunak, genital mengembang, serta berwarna kemerahan. Data yang dikoleksi berupa panjang total, bobot badan, bobot gonad, fekunditas, diameter telur, dan indeks kematangan gonadnya. Hasil penelitian menunjukkan bahwa kisaran fekunditas ikan lalawak adalah 1.920-2.236 butir/g bobot gonad, dan 83-352 butir/g bobot badan induk dengan rata-rata diameter telur 0,87-1,10 mm. IKG berkisar 3,73%-18,36% dari kisaran bobot induk 85,32-264,8 g. Hubungan antara bobot badan dengan bobot gonad ikan lalawak digambarkan dengan persamaan linear y= 5,829ln (x) + 0,691 (r= 0,874); sedangkan hubungan panjang badan terhadap bobot gonad digambarkan dengan persamaan y= 28,52ln (x) - 38,10 (r= 0,7487). Pada ikan lalawak, hubungan bobot badan dengan fekunditas lebih erat dibandingkan dengan hubungan panjang badan terhadap fekunditas. Hasil pengamatan juga menyimpulkan bahwa ikan lalawak tergolong ikan yang memijah secara parsial.Over-exploitation of lalawak (Barbonymus balleroides) from its natural habitat had significant negative impacts on its availability. Before it is introduced as aquaculture commodity, more information about its reproductive biology in aquaculture environment needs to be well observed. The aim of this study was to determine the productivity of lalawak reared in aquaculture environment through observation of bioreproductionand relationship between fecundity and body length-weight of lalawak. Samplewas randomly taken from fifteen individuals female. From those samples, gonads were taken from five mature females for reproduction observation, by which the mature females were selected following specific criteria such as : their body feels rough if touched;enlarged abdomen posteriorly and felt soft; fluffy and reddish genital. Data collection consisted of measurement of the total length, body weight, gonad weight, fecundity, egg diameter and gonadosomatic index (GSI). The results revealed that the fecundity of lalawak ranged from 1,920 to 2,236 eggs/gof gonad weight and 83 to 352 eggs/g of body weight with average diameters of eggs ranged from 0.869 to 1.10 mm. GSI values ranged from 3.73 to 18.36% of 85.32 to 264.8g of body weight. The relationship between body weight and gonad weight of lalawak was described by the linear equation of y= 5,829ln (x) + 0.691 (r= 0.874), while the body length relationship to the gonad weight was described by the equation of y= 28,52ln (x) - 38.10 (r= 0.7487). Fecundity relationship with body weight of lalawak was closer than the length. The observations also concluded that lalawak is classified as partial spawning.

scholarly journals Effects of GnRH and Anti-Dopamine on Gonad Maturation of Osteochilus melanopleurus (Bleeker, 1852)

2021 ◽  
Vol 934 (1) ◽  
pp. 012014
Author(s):  
N Asiah ◽  
N Aryani ◽  
N Nuraini ◽  
I Lukistyowaty ◽  
Y Harjoyudanto
Keyword(s):  
Body Weight ◽  
Research Method ◽  
Economic Value ◽  
Gonad Maturation ◽  
Gonad Maturity ◽  
River Waters ◽  
Randomized Design ◽  
Injection Dose ◽  
Completely Randomized Design ◽  
Egg Diameter

Abstract The Osteochilus melanopleurus (Bleeker, 1852) is one of the endogenous fish in the Siak River waters of Riau province which has high economic value. However, the fulfillment of needs still depends on the catch in nature. Efforts to overcome these problems are the availability of mature gonads. Broadly to accelerate the maturation of gonads through hormone induction until the fish are ready to be spawned to produce fish fry continuously. The purpose of this study was to analyze the effect of gonadotropin and anti-dopamine hormone induction with the trademark “Oodev” on the final gonad maturity (TKG) of the prospective broodstock of O. melanopleurus. The research was conducted from April to August 2021 in the fish rearing column and the experimental pond, Faculty of Fisheries and Marine Science. The research method was a Completely Randomized Design with 4 treatment levels and 3 replications, while the treatments were P0 (without Oodev injection), P1 (Oodev dose 0.5 mL/kg), P2 (0.7 mL/kg), and P3 (0,9 mL/kg). Measured responses: percentage of broodstock that reached TKG and egg diameter. The results of the research that have been carried out, the measurement of the diameter of the eggs produced showed that the use of the Oodev hormone at a dose of 0.7 mL/kg body weight of O.melanopleurus given every week for twelve weeks was able to stimulate the development of the gonads of O.melanopleurus. Ovaprim injection of 0.7 mL/kg body weight produced 89,566 eggs with a latency of 4 hours. oodev injection dose of 0.7 ml/kg BW or P2 treatment has succeeded in achieving a TKG of 82%.

scholarly journals THE STIMULATION OF GONAD MATURITY OF ASIAN REDTAIL CATFISH Hemibagrus nemurus (Valenciennes, 1840) THROUGH INDUCTION OF OOCYTE DEVELOPER (Oodev) HORMONE

2019 ◽  
Vol 8 (1) ◽  
pp. 965
Author(s):  
Devika Kharisma Putri ◽  
Tarsim Tarsim ◽  
Deny Sapto Chondro Utomo ◽  
Indra Gumay Yudha
Keyword(s):  
Research Method ◽  
Spawning Season ◽  
Gonad Maturity ◽  
Gonadal Maturity ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Egg Diameter ◽  
Somatic Index ◽  
Stimulation Of

Oodev hormone application has been applied to stimulate gonadal maturity so that fish fry could be available outside the spawning season. This research aimed to study the effect of Oodev hormone on the gonadal maturity of asian redtail catfish Hemibagrus nemurus (Valenciennes, 1840). This research method used a completely randomized design (CRD) with 4 doses treatments, i.e 0, 0,25, 0,50, 1,00 ml/kg. A total of 8 fish were used as replications for each treatment. The parameters measured were the gonado somatic index (GSI) and egg diameter. The results showed that the effect of Oodev hormone on GSI and egg diameter was significantly different (P<0.05). A higher Oodev hormone dose caused an increase of GSI and egg diameter size. The recommended Oodev dose for application is 1 ml/kg.

Reproduction in Antarctic notothenioid fish

1991 ◽  
Vol 3 (2) ◽  
pp. 125-150 ◽  
Author(s):  
Karl-Hermann Kock ◽  
Adolf Kellermann
Keyword(s):  
Egg Size ◽  
Gonadosomatic Index ◽  
Gonad Maturation ◽  
Fish Length ◽  
Notothenioid Fish ◽  
Pack Ice ◽  
Latitudinal Shift ◽  
Spawning Time ◽  
Champsocephalus Gunnari ◽  
Ocean Sector

Gonad maturation in Antarctic notothenioid fish is a biennial process although spawning is likely to take place annually. However, part of the populations of Champsocephalus gunnari in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40% at spawning. Apart from a few nototheniid species of the GSI of males is much less and typically only 15–20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species it is not attained until 70–80% of the maximum length. The only exception is Champsocephalus gunnari at South Georgia which may begin spawning at about 40% of Lmax. Most species of the Seasonal Pack-ice Zone are autumn/winter spawners, whereas in the High-Antarctic Zone more species spawn in summer and autumn. Spawning time is remarkably constant among populations of some species, in others a latitudinal shift in spawning time is apparent. Fecundity is commonly positively correlated with fish length and weight. It exceeds 100 000 eggs only in a few nototheniid species and is commonly in the order of 1000 to 15–20 000 eggs. Ova diameter varies from 0.8 to 5.0 mm. Egg size distribution among fishes of the Seasonal Pack-ice Zone is bimodal. There is a general trend in nototheniids of increasing egg size and decreasing relative fecundity towards higher latitudes. Incubation time may be up to five months. Eggs of most species are probably left unattended for the long incubation period. Nest guarding has been observed in three species but may be more common in particular among the artedidraconids. A number of reproductive strategies associated with nest guarding, egg size and the duration of the pelagic phase have been identified.

scholarly journals Study of gonadotropin (GtH) stimulating hormone on gonad maturation of climbing perch Anabas testudineus Bloch

2010 ◽  
Vol 9 (1) ◽  
pp. 61
Author(s):  
. Suriansyah ◽  
M. Zairin Junior ◽  
Agus Oman Sudrajat
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Germinal Vesicle ◽  
Gonad Maturation ◽  
Anabas Testudineus ◽  
Germinal Vesicle Breakdown ◽  
Hormone Synthesis ◽  
Climbing Perch ◽  
Egg Diameter ◽  
Stimulation Of

<p>Gonadotropin can quicken the process of 17α-hidroxyprogesterone hormone synthesis becoming 17α, 20β-di hidroxyprogesterone as the maturation inducing steroids (MIS) and quicken the process of egg nucleus integration to germinal vesicle breakdown (GVBD) position. This research aimed to know the efficacy of gonadotropin hormone in the form of ovaprim on gonad maturation of climbing perch (<em>Anabas testudineus</em> Bloch). Stimulation of GtH with a dose of 0.5 ml/kg of fish body weight could improve the fish gonado somato index (GSI) to 2.72 %, improve the the final egg diameter to  0.70 mm (71.50 %), and shorten ovulation time which down to 4.30 hours.</p> <p>Key words: Gonadotropin hormone, gonad maturation, <em>Anabas testudineus</em></p> <p><em> </em></p> <p>ABSTRAK</p> <p>Hormon gonadotropin dapat mempercepat proses sintesa hormon 17α-hidroksiprogesteron menjadi 17α, 20β-dihidroksiprogesteron yang berfungsi sebagai steroid yang merangsang pematangan gonad dan mempercepat proses integrasi inti sel telur menuju posisi <em>germinal vesicle breakdowan</em> (GVBD). Penelitian ini bertujuan untuk mengetahui efektivitas hormon gonadotropin yang terdapat dalam ovaprim terhadap pematangan gonad ikan betook <em>Anabas testudineus</em> Bloch. Pemberian hormon GtH dalam bentuk ovaprim dengan dosis 0,5 ml/kg bobot ikan dapat memperbaiki perkembangan gonad yang ditunjukkan dengan peningkatan nilai gonado somatik indeks (GSI) sebanyak 2,72%, peningkatan diameter telur menjadi 0,77 mm (71,50%) dan mempercepat waktu ovulasi menjadi 4,3 jam.</p> <p>Kata-kata kunci: Hormon gonadotropin, pematangan gonad, ikan betok</p>

Sign in / Sign up

Export Citation Format

Share Document