scholarly journals PERTUMBUHAN IKAN BANDENG (Chanos chanos) ANTARA BENIH HATCHERY SKALA RUMAH TANGGA DAN GENERASI KEDUA (G-2) TERSELEKSI

2018 ◽  
Vol 17 (1) ◽  
pp. 9
Author(s):  
Daniar Kusumawati ◽  
Zafran Jamaris ◽  
Titiek Aslianti
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
High Growth ◽  
Small Scale ◽  
Quality Level ◽  
Chanos Chanos ◽  
Main Producer ◽  
Rate Research ◽  
Better Than

Currently, there is a national concern regarding to the decrease of milkfish production from ponds in North Java due to a low quality of milkfish seed produced by small scale hatcheries in Bali, which is the main producer of milkfish seed. The quality of seed is strongly related to the quality of eggs (fertility), while quality of eggs produced depends on the management of brood stocks carried out by the hatcheries. Growth rate and growth hormone profiles are some of the biological aspects that could be used as a basis/benchmark to evaluate quality level of milkfish seed reared in ponds. The aim of this experiment was to evaluate growth rate and growth hormone profile performance between selected G-2 seed and small scale hatcheries seed as control population the growth rate. Research on grow-out of milkfish seed was conducted at the IMRAD ponds facility in Pejarakan, using milkfish seed produced by small scale hatcheries as well as selected second-generation (G-2) seed, each with the density of 5000 seed/pond (1 pond=0.5 ha). The seeds were fed with dry pellet and reared for 5 – 6 months. The results showed that the seed produced with standard operational procedure (SOP) by small scale hatcheries were having longer (F hit. = 13.68 > F tabel 1%) and heavier body washt (F hit. = 18.98 > F tabel 1%) better than selected G-2 seed and small scale hatcheries seed without SOP with high growth hormone concentration (F hit. = 4.95 > F tabel 5%).

scholarly journals PROFIL PERTUMBUHAN, ENZIMATIS, DAN NUTRISI IKAN BANDENG (Chanos chanos) GENERASI KEDUA (G-2) TERSELEKSI DENGAN MENERAPKAN STANDAR OPERASIONAL PROSEDUR (SOP) PEMELIHARAAN LARVA

2017 ◽  
Vol 12 (2) ◽  
pp. 55
Author(s):  
Daniar Kusumawati ◽  
Zafran Jamaris ◽  
Titiek Aslianti
Keyword(s):  
Enzymatic Activity ◽  
Seed Quality ◽  
Small Scale ◽  
Morphological Aspect ◽  
Feed Conversion ◽  
Biological Aspect ◽  
Chanos Chanos ◽  
Weight Growth ◽  
Main Producer

Isu nasional menurunnya produksi budidaya ikan bandeng di tambak pantai utara Pulau Jawa didugasebagai akibat rendahnya kualitas benih produk Hatchery Skala Rumah Tangga (HSRT) di Bali, yang secara kontinu merupakan sumber utama pasok benih. Banyak faktor yang mempengaruhi kualitas benih, antara lain kualitas telur dan induk, serta manajemen pemeliharaan induk dan larva. Tujuan penelitian ini adalah untuk mengevaluasi performa pertumbuhan,aktivitas enzim pencernaan dan nutrisi benih ikan bandeng dari HSRT dan generasi kedua (G2) terseleksi yang dipelihara berdasarkan standar operasional prosedur. Penelitian dilakukan di tambak Pejarakan, dengan hewan uji benih produk HSRT dan benih generasi ke-2 (G-2) terseleksi dengan panjang total rata-rata 11,79 ± 1,64 mm, masing-masing dengan padat tebar 5.000 ekor/petak dengan luasan 0,5 Ha/petak, diberi pakan jenis pelet kering berkadar protein 25 % dan dipelihara selama 6 bulan. Hasil penelitian menunjukkan performa benih ikan bandeng dipengaruhi oleh sumber induk dan manajemen pemeliharaan saat larva. Pertumbuhan benih ikan bandeng asal HSRT dengan SOP pemeliharaan larva menunjukkan peningkatan laju pertumbuhan panjang dan bobot sebesar 10,11% dan 47,18% lebih tinggi dibandingkan benih G2-terseleksi, dan 13,82% dan 50,55% lebih tinggi dibandingkan benih HSRT tanpa SOP. Aktivitas enzimatis pada benih HSRT dengan SOP lebih efisien dibandingkan benih G2-terseleksi. Aktivitas enzimatis pada benih HSRT tanpa SOP adalah yang paling rendah dimana hal ini terlihat dari laju pertumbuhannya yang juga paling rendah. Benih HSRT yang dipelihara dengan SOP mampu menekan rasio konversi pakan sebesar 28,29% lebih rendah dibandingkan benih G2-terseleksi, dan 22,64% dibandingkan benih HSRT yang dipelihara tanpa SOP. Currently, there is a national concern regarding the decreasing of milkfish production from ponds in North Java allegedly due to a low quality of milkfish seed produced by small-scale hatcheries in Bali, which is the main producer of milkfish seed. Some factors can influence seed quality, such as quality of egg and broodstock also rearing management of broodstock and larvae. The aim of this experiment was to evaluate morphological aspect (growth rate) and biological aspect (digestive enzymes activities) of seed from backyard hatchery and selected G2 milkfish. Research on grow-out of milkfish seed was conducted at the IMRAD ponds facility in Pejarakan, using milkfish seed produced by small-scale hatcheries as well as selected second-generation (G-2) seed, each with the density of 5,000 seed/pond (1 pond=0.5 ha). The seeds were fed with dry pellet and reared for 6 months.The result showed performance of seed in terms of morphological and biological influenced by broodstock itself and larvae rearing management.The growth of seed of HSRT origin with larvae rearing SOP had increased the length of and weight growth rates of 10.11% and 47.18%, respectively compared to seed G2 selected and 13.82% and 50.55% from seed HSRT without SOP. Enzymatic activity in HSRT seed with SOP was more efficient than that of selected G2 seed. Enzymatic activity in HSRT seed without SOP was the lowest in which correlated to the lowest growth. Seed from HSRT origin with SOP had better feed conversion ratio which was 28.29% lower than that of selected G2 seed and 22.64% lower than that of HSRT seed without SOP.

The evaluation of economically optimal rations for bacon pigs formulated by curve fitting and linear programming techniques

1966 ◽  
Vol 8 (2) ◽  
pp. 213-220 ◽  
Author(s):  
J. B. Dent ◽  
P. R. English
Keyword(s):  
Growth Rate ◽  
Live Weight ◽  
High Growth ◽  
High Growth Rate ◽  
Food Conversion ◽  
Growing Period ◽  
Programming Techniques ◽  
Rates Of Growth ◽  
Food Conversion Efficiency ◽  
Better Than

Least cost rations for specific rates of growth in the growing and finishing periods were given to pigs slaughtered at 200 lb. live-weight. During the growing period pigs grew very close to the planned rates in spite of the fact that some food was rejected. Pigs given rations for a low growth rate in the growing period grew slightly faster than planned in the finishing period. In the finishing period pigs given rations for the high growth rate grew on average very near to this rate. The pigs given the ration for the low growth rate grew slightly faster than planned. Food conversion efficiency was for all pigs very near to, or slightly better than, that planned. The rations had no adverse effect on carcass quality.

Influence of Growth Pressure and Addition of HCl Gas on Growth Rate of 4H-SiC Epitaxy

2015 ◽  
Vol 821-823 ◽  
pp. 133-136 ◽  
Author(s):  
Takanori Tanaka ◽  
Naoyuki Kawabata ◽  
Yoichiro Mitani ◽  
Masashi Sakai ◽  
Nobuyuki Tomita ◽  
...  
Keyword(s):  
Growth Rate ◽  
High Throughput ◽  
Defect Density ◽  
High Growth ◽  
High Growth Rate ◽  
Pressure Condition ◽  
High Quality ◽  
Growth Pressure ◽  
Hcl Gas

The reduction of the growth pressure was demonstrated to have the same effect as the addition of chloride-containing gas on preventing the Si nucleation and the epitaxy with high growth rate (>50 μm/h) was achieved by using the decreasing pressure condition in a horizontal CVD reactor without chloride-containing gas. The quality of a 30-μm-thick epilayer grown with 40 μm/h was also investigated. Downfall and triangle defect density in the layer was as low as 0.16 /cm2, indicating that a high quality epitaxial wafer can be easily obtained under the condition with high throughput in the sinple CVD system.

scholarly journals Implanting Melatonin at Lambing Enhances Lamb Growth and Maintains High Fat Content in Milk

2021 ◽  
Author(s):  
José Alfonso Abecia ◽  
Silvia Luis ◽  
Francisco Canto
Keyword(s):  
Growth Rate ◽  
Average Daily Gain ◽  
Survival Rates ◽  
High Growth ◽  
Fat Content ◽  
High Growth Rate ◽  
High Survival ◽  
Melatonin Treatment ◽  
Quality Of Milk

Abstract Background: Recent studies have shown that melatonin implants administered during pregnancy reduced neonatal lamb mortality and produced high survival rates at weaning. This study was designed to quantify the effects of melatonin implantation of ewes and lambs immediately after lambing on the growth of lambs and the quality of milk throughout lactation.Results: In experiment 1, treatment with melatonin the lambs did not have a significant effect on liveweight (LW) (±S.E.M.) at weaning or average daily gain (ADG) until weaning. These results were similar in experiment 2, although lambs reared by melatonin-implanted ewes presented significantly (P<0.05) higher LW at weaning and ADG than did lambs from control ewes. The effect of melatonin implantation of the mothers was particularly evident in male lambs, so that male lambs reared by treated ewes presented significantly higher LW at week 2, 3, and 4 than did male lambs reared by control ewes. The fat content of milk was significantly (P<0.05) higher in implanted ewes than it was in control ewes at day 45 of lactation. Protein and lactose content of milk did not differ significantly between groups. In experiment 3, using artificially-reared lambs, melatonin treatment of the lambs at birth did not have a significant effect on LW at weaning, or ADG. Conclusions: Melatonin treatment of ewes at lambing induced a high growth rate of their lambs and increased the fat content of the milk; however, the direct treatment with melatonin of the lambs at birth did not have an effect in their growth rate.

scholarly journals Craniopharyngioma in children: accelerated growth phenomenon after surgery for somatotropic hormone insufficiency

1996 ◽  
Vol 42 (2) ◽  
pp. 20-25
Author(s):  
N. A. Mazerkina ◽  
A. N. Tyulpakov ◽  
S. K. Gorelyshev ◽  
V. A. Peterkova ◽  
A. A. Bulatov ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Growth Rate ◽  
Insulin Secretion ◽  
Area Under The Curve ◽  
High Growth ◽  
Serum Prolactin ◽  
Growth Phenomenon ◽  
Group 2 ◽  
Growth Hormone Insufficiency ◽  
Group 1

Thirty-two children with craniopharyngiomas aged 3.6 to 18.9 were examined. The patients were divided into 2 groups. Group 1 consisted of 16 children treated conservatively and group 2 of 16 children subjected to radical surgery. No release of growth hormone in response to clonidine stimulation (no more than 4,5 ng/ml) was observed in both groups; growth hormone release in response to administration of growth hormone releasing factor was reliably (p=0.003) higher in group 1 than in group 2 (7.5 3.9 and 2,5 5.1 ng/ml, respectively). At the same time, growth SDS was closer to the norm in group 2 than in group 1 (-1.27 1.3 and - 2.04 1.4, respectively), and growth rate in 8 out of 12 children in group 2, despite growth hormone insufficiency, was 6-12 cm/year. Comparison of the levels of serum prolactin in both groups showed no reliable differences, and the standard glucose tolerance test showed a high basal and stimulated level of insulin secretion in 8 children in group 2 and in 1 girl in group 1. The total, area under the curve representing insulin secretion (ACins) was 3016.0 4288.8 IU/l - min in group 1 and 5378.8 + 4511.2 IU/ 1 min in group 2, the correlation between ACins and growth SDS being 0.58 and between ACins and body weight index 0.61. Normal or high growth rate was observed in all the children with hyperinsulinism (ACins over 6000 IU/l min) and in 2 with normal insulin release after surgery, this permitting a conclusion on the principal role of insulin in growth stimulation in the presence of growth hormone insufficiency in these children.

scholarly journals EVALUASIKEBERHASILANPENEBARANIKANBANDENG(Chanos chanos) DIWADUK IR. H. DJUANDA

2017 ◽  
Vol 3 (4) ◽  
pp. 231
Author(s):  
Didik Wahju Hendro Tjahjo ◽  
Sri Endah Purnamaningtyas ◽  
Endi Setiadi Kartamihardja
Keyword(s):  
High Growth ◽  
High Growth Rate ◽  
Fish Culture ◽  
High Potency ◽  
Fish Stocking ◽  
Chanos Chanos ◽  
Stratification Method ◽  
Plankton Bloom ◽  
Local Fisherman

Waduk Ir. H. Djuanda mempunyai potensi pengembangan budi daya ikan yang tinggi, dan pertumbuhan budi daya tersebut berkembang sangat pesat. Perkembangan yang pesat tersebut sangat berdampak pada penurunan kualitas air dan mendorong peningkatan kelimpahan plankton yang sangat tinggi. Oleh karena itu, pemerintah melakukan penebaran ikan bandeng (Chanos chanos) pada bulan Juli sampai Agustus 2008 sebanyak 2.116.000 ekor benih dalam upaya menanggulangi kelimpahan plankton yang tinggi dan sekaligus meningkatkan produksi ikannya. Tujuan penelitian ini adalah untuk mengevaluasi keberhasilan penebaran ikan bandeng di Waduk Ir. H. Djuanda, Purwakarta, Jawa Barat. Penelitian ini dilakukan setiap bulan pada periode bulan Juli 2008 sampai Januari2009. Pengamatan dilakukan denganmetode teratifikasi dengan enamtitik stasiun pengamatan. Evaluasi keberhasilan penebaran ikan bandeng dievaluasi kemampuan memanfaatkan kelimpahan plankton, pertumbuhannya, dan dapat tertangkap kembali.Hasil analisis kebiasaanmakan, ikan bandeng mempunyai kemampuan yang tinggimemanfaatkan kelimpahan plankton di perairan tersebut, dan ikan ini mempunyai laju pertumbuhan yang sangat cepat (K=3.381 dengan L”=45 cm). Ikan bandeng ini dapat tertangkap kembali oleh nelayan setempat pada bulan September 2008 sampai Pebuari 2009 dan juga secara tidak langsung mampu memperbaiki kualitas perairanWaduk Ir. H. Djuanda. Oleh karena itu, dalam upaya peningkatan dampak penebaran ikan bandeng untuk memperbaiki kualitas perairan dan peningkatan kesejahteraan nelayan, maka perlu dilanjutkan penelitian strategi penebaran ikan bandeng dan penguatan kelembagaan nelayan yang ada. Ir. H. Djuanda Reservoir has high potency in developing of fish culture, that the growth has developed very fast. The fast growth of fish culture affected the degradation of water quality and push increasing of plankton abundance. Therefore, government conduct stocking of bandeng on July until August 2008 as much 2,116,000 individual as on effort of overcoming of plankton bloom and increasing of fish production. The aim of this study is to evaluate the successfulness of fish stocking of bandeng (Chanos chanos) in Ir. H. Djuanda Reservoir, Purwakarta, and West Java. The research was conducted every month at period of July 2008 until January 2009. Observation was done by sampling stratification method at 6 point of observation station. Evaluation of successfulness fish stocking base on the ability using of plankton, the growth and percentage of recaptured. The result should that bandeng have high ability inusing of plankton in waters as a feed (97.8%), and this fish had high growth rate (K=3.381 and L”=45 cm). This fish could be recaptured by local fisherman in September 2008 until February 2009. Beside, this bandeng stocking indirectly have been able to improve waters quality of Ir. H. Djuanda Reservoir. Therefore, the effort of increasing impact of bandeng stocking improved waters quality and improvement of fisherman prosperity, thus require to be continued of bandeng stocking and reinforcement institute of local fisherman.

Effects of the Growth Rate on the Quality of 4H Silicon Carbide Films for MOSFET Applications

2014 ◽  
Vol 778-780 ◽  
pp. 95-98 ◽  
Author(s):  
Massimo Camarda ◽  
Stefania Privitera ◽  
Ruggero Anzalone ◽  
Nicolò Piluso ◽  
Patrick Fiorenza ◽  
...  
Keyword(s):  
Growth Rate ◽  
Surface Roughness ◽  
Silicon Carbide ◽  
Surface Morphology ◽  
Growth Rates ◽  
Stacking Faults ◽  
High Growth ◽  
Mos Devices

In this paper we investigate the role of the growth rate (varied by changing the Si/H2ratio and using TCS to avoid Si droplet formation) on the surface roughness (Rq), the density of single Shockley stacking faults (SSSF) and 3C-inclusions (i.e. epi-stacking faults, ESF). We find that optimized processes with higher growth rates allow to improve the films inallthe considered aspects. This result, together with the reduced cost of growth processes, indicates that high growth rates should always be used to improve the overall quality of 4H-SiC homoepitaxial growths. Furthermore we analyze the connection between surface morphology and density of traps (Dit) at the SiO2/SiC interface in fabricated MOS devices finding consistent indications that higher surface roughness (step-bunched surfaces) can improve the quality of the interface by reducing theDitvalue.

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