Saturday, August 28, 2010

BUDIDAYA PERIKANAN

BUDIDAYA PERIKANAN


Benih Sidat Tatelu

Posted: 27 Aug 2010 02:18 PM PDT


Benih Sidat Tatelu

Ikan sidat telah mulai dibudidayakan di negara-negara maju seiring dengan peningkatan permintaannya dari waktu ke waktu. Sebut saja Jepang dan Eropa yang mulai merintis usaha tersebut. Bahkan di China, budidaya ikan bernama latin Angguila sp.ini telah berlangsung lebih dari dua dasawarsa terakhir. Kendati demikian, upaya itu belum bisa memenuhi semua permintaan sidat.

Peluang inilah yang kini tengah diupayakan Indonesia, menjadi pemasok sidat di dunia. Ini bukan tanpa dasar karena potensi pengembangan budidaya sidat di tanah air sangat besar. Bayangkan saja, selain didukung dengan potensi lahan juga terdapat dua spesies sidat dengan ketersediaan benih alam yang melimpah. Kedua spesies tersebut adalah Agguilla bicolor dan Angguilla marmorata. Jenis pertama mempunyai karakteristik pertumbuhan lebih cepat dan berwarna putih kehitaman. Sedangkan Angguilla marmorata pertumbuhannya lambat tetapi berukuran besar dan disukai konsumen di China.


Namun, pengembangan sidat di bumi pertiwi terkendala penyediaan benih (fingerling) yang sudah siap tebar dalam jumlah besar. Sebab usaha tersebut memerlukan penanganan mulai dari adaptasi terhadap air tawar, pakan buatan dan pertumbuhan untuk mencapai stadia sidat muda atau fingerling. Kendala lain adalah prasarana budidaya, yaitu penyediaan sarana kolam yang harus menggunakan konstruksi permanen untuk mencegah sidat lolos dari kolam. Disamping itu juga membutuhkan sarana air mengalir dan aerator untuk menjaga agar kandungan oksigen bisa memenuhi syarat hidup dan pertumbuhan sidat.

Faktanya, sampai saat ini produksi benih sidat secara artifisial belum bisa dilakukan karena proses reproduksi ikan ini tergolong rumit dan unik. Ikan sidat yang berukuran besar di air tawar tidak bisa mengalami proses pematangan gonad atau produksi telur bila tidak bermigrasi ke laut. Secara alamiah, pemijahan sidat berlangsung di perairan laut dalam yang masih misterius hingga saatP ini. Sementara benih-benih (stadium glass eel) bermigrasi ke perairan tawar melalui muara-muara sungai pada saat bulan gelap.

Beberapa wilayah menunjukkan adanya migrasi benih tersebut. Misalnya Sulawesi Utara. Yaitu di Amorang Kab. Minahasa Selatan, Poigar di Kab. Bolmong dan Inobonto di Kab. Bolmong. Keberadaan benih-benih itu bisa dimanfaatkan sebagai sumber benih alam.

Untuk benih alam yang berukuran sangat kecil umumnya baru mencapai stadium glass eel maupun elver. Tahapan ini membutuhkan perkembangan lebih lanjut untuk mencapai stadium sidat muda. Sedangkan benih yang besar di perairan alami tidak banyak yang bisa hidup (survive) akibat ancaman pemangsa, perubahan kondisi perairan yang kian tercemar dan banyaknya kegiatan konstruksi di perairan yang mengurangi peluang keberlangsungan hidup benih.

Karena itu upaya yang dibutuhkan untuk menyelamatkan benih-benih tersebut adalah melakukan perawatan (nursery) secara khusus sehingga keberlangsungan hidupnya menjadi besar. Caranya antara lain melalui upaya penangkapan benih pada bulan gelap di muara sungai. Hal itu memungkinkan penyediaan benih dalam jumlah besar meski masih memerlukan upaya penanganan hingga mencapai stadium dan ukuran yang siap dibesarkan di kolam budidaya secara efisien. Sebagai kunci keberhasilan awal pengembangan budidaya sidat adalah kemampuan menyediakan benih siap tebar. Untuk itu harus bisa menjamin tingkat keberlangsungan hidup yang tinggi dari hasil pengumpulan benih alam yang berukuran sangat kecil.

Tahapan-tahapannya sebagai berikut. Pertama adaptasi untuk mendapatkan glass eel yang bisa hidup di air tawar dan responsif terhadap pakan formula. Kemudian penyesuaian air media dengan penurunan kualitas secara bertahap dan adaptasi pakan hidup (cacing diubah menjadi pakan buatan). Ke dua, penumbuhan elver agar menjadi sidat muda elver yang adaptif. Untuk itu dibutuhkan 3 hal yaitu manajemen kualitas air yang memungkinkan kondisi air cepat bersih dan kaya oksigen, memacu asupan pakan melalui penyediaan pakan dengan aktabilitas tinggi dan gizi berimbang serta ke tiga dengan grading ukuran (sortasi) antara individu yang berukuran besar dan kecil. Benih yang siap tebar di kolam harus memenuhi syarat. Yakni ukuran mencapai lebih dari 5 gr/ekor) serta memiliki rasio lebar badan dan berat panjang tidak kurang dari 1,4 cm x 9 gr x 17 cm. (Rd)

sumber : http://www.perikanan-budidaya.dkp.go.id

Strategi Lindungi Kesehatan Ikan dan Lingkungan

Posted: 27 Aug 2010 01:36 PM PDT


Peningkatan produksi hingga 353% selama lima tahun ke depan adalah syarat wajib untuk bisa
menjadi produsen perikanan utama dunia. Namun hal itu tak akan bisa terwujud jika kegiatan
budidaya perikanan masih saja dihantui penyakit. Secara finansial, kejadian penyakit tersebut
menimbulkan kerugian yang tak sedikit.

Lihat saja catatan Direktorat Perikanan Jenderal Budidaya (DJPB). Pada 2007, terjadi kasus
penyakit di 13 provinsi dengan total kerugian Rp 27,5 miliar. Pada tahun yang sama pula terjadi
KHV (Koi Herpes Virus) di 3 lokasi sentra budidaya yakni di Sumatera Barat, Jawa Barat dan
Kalimantan Selatan dengan kerugian mencapai Rp 49 juta. Sementara itu pada 1994, serangan
virus white spot pada udang telah mengakibatkan kerugian mencapai
Rp 100 miliar. Bahkan pada 2006, serangan penyakit menyebabkan larangan perdagangan
ikan mas dan koi antar pulau sehingga berdampak pada munculnya pengangguran dan masih
banyak lagi lainnya.

Celakanya, akibat munculnya kasus penyakit itu produk perikanan Indonesia sempat
mengalami penolakan di pasar internasional. Sebut saja pada periode Januari – Februari 2007
dengan kerugian mencapai Rp 50 miliar. Sementara pada bulan berikutnya di tahun yang
sama, ekspor udang windu ke Jepang sebanyak 16,2 ton juga mengalami penolakan.
Sedangkan pada 1997, ekspor kekerangan terkena embargo dan menyebabkan kerugian
ekonomi sebesar Rp 188 milyar.

Dari sejarah kasus penyakit inilah maka kesehatan ikan dan lingkungan mutlak jadi perhatian.
Terkait hal ini Direktorat Kesehatan Ikan dan Lingkungan – Direktorat Jenderal Perikanan
Budidaya (DJBP) telah mempersiapkan strategi khusus dalam pengembangan sistem
kesehatan ikan dan lingkungan. Direktur Kesehatan Ikan dan Lingkungan, Murdjani dalam
Forum Akselerasi Pembangunan Perikanan Budidaya 2010 – 2014 beberapa waktu lalu di
Batam menyatakan, untuk membentuk kawasan budidaya yang sehat sehingga bisa
mendukung upaya peningkatan produksi maka dilakukan dengan beberapa cara. Yaitu
memberikan perlindungan lingkungan, pengendalian obat ikan dan kimia, standarisasi
kesehatan ikan dan lingkungan, pengendalian residu serta pengendalian hama penyakit ikan.



Langkah Perlindungan


Sementara itu sebagai langkah perlindungan lingkungan dilakukan dengan cara pemantauan
dan evaluasi perlindungan lingkungan budidaya. Selanjutnya juga dengan peningkatan kualitas
lingkungan budidaya melalui restocking ikan trofik level rendah di perairan umum daratan,
perlindungan ikan spesifik lokal potensial budidaya dan rehabilitasi lingkungan budidaya.
Sedangkan untuk kegiatan pengendalian obat ikan, bahan kimia dan biologi dilakukan dengan
cara Perencanaan Tahunan Pengendalian Obat Ikan dan Kimia Nasional (Petapoiknas).
Kemudian juga dengan monitoring evaluasi dan pengendalian obat ikan, kimia dan bahan
biologi. Disampping itu juga dilakukan registrasi obat ikan, penerbitan izin usaha obat ikan serta
penerbitan rekomendasi impor.


Pengendalian hama penyakit ikan (HPI) dilakukan langkah-langkah seperti pemberian vaksinasi
dan imunostimulan, pengembangan obat ramah lingkungan, monitoring dan surveilance
(pengawasan) HPI, pemetaan penyebaran HPI, penerapan biosecurity di kawasan budidaya
serta penerapan Analisa Risiko Impor (ARI).


Selanjutnya ada kegiatan standardisasi kapasitas laboratorium. Antara lain dilakukan dengan
cara pengelolaan laboratorium yang memenuhi standar kelayakan teknis (GLP; ISO 17025),
merumuskan standar metode uji (SNI;POS), peningkatan kompetensi petugas laboratorium,
pengembangan Balai Penyidikan Penyakit Ikan dan Lingkungan (laboratorium level III) di Anyer

– Banten sebagai laboratorium rujukan serta pengembangan jejaring kerja laboratorium dalam
dan luar negeri.
Untuk monitoring residu dilakukan dengan cara penyusunan National Residu Control Plan
(NRCP). Lalu monitoring dan pengendalian residu dengan prioritas komoditas unggulan pada
wilayah provinsi yang ditentukan, harmonisasi peraturan nasional dan internasional serta
koordinasi tindak lanjut pengendalian residu. (Rd)

sumber : http://www.perikanan-budidaya.dkp.go.id

Thursday, August 26, 2010

BUDIDAYA PERIKANAN

BUDIDAYA PERIKANAN



Akhir Tahun Rumah Sakit Ikan Beroperasi

Posted: 23 Aug 2010 06:32 AM PDT


Akhir Tahun Rumah Sakit Ikan Beroperasi



JAKART. virus dan penyakit terus menyerang budidaya ikan, maka industri pengolahan perikanan kesulitan untuk mendapatkan bahan baku. Oleh karena itu. Menteri Kelautan dan Perikanan (MKP) Fadel Muhammad akan meresmikan Rumah Sakit Ikan yang dibangun di Kabupaten Serang. Banten.

Rencananya paling lambat akhir 2010. Rumah Sakit Ikan tersebut diharapkan bisa melakukan analisa penyakit, bakteri, virus sekaligus mengembangkan metode serta cara pengobatan dan penyembuhannya ikan-ikan yang terserang virus.

Amerika dan Jepang sudah lebih dulu memiliki Rumah Sakit Ikan. Sehingga, untuk mengatasi masalah serangan virus dan bakteri selama ini Indonesia juga harus punya. Kita sudah membangun Rumah Sakit Ikan di Serang. Banten dengan anggaran Rp 20 miliar." ungkap Fadel Muhammad belum lama ini. Fadel mengatakan. Rumah Sakit Ikan tersebut saat ini dalam proses pembangunan dan akhir tahun ini diharapkan sudah bisa beroperasi, (nel)


Sumber : Indopos 21 Agustus 2010,hal.3

3 Great Fish For Your Tropical Aquarium

Posted: 22 Aug 2010 02:17 PM PDT


3 Great Fish For Your Tropical Aquarium
by: Paul Curran



Lamp Eye, Madagascar Rainbow Fish and the Medaka are three fish suitable for your tropical aquarium. Find out about their behavior, what they look like, water conditions, how to feed them and how to breed them

Lamp Eye - Aplocheilichthys macrophthalmus (Family: Cyprinodontidae)

As this fish rarely grows to more than 3 cms you need to assess your community aquarium to see if there are any of the others that lean towards the aggressive and might harm them. For their size these fishes eyes are bigger than you might expect and show as a greenish gold in low light; hence the common names, Lamp or Lantern eye.

As an active fish with a good leap, you must have a cover on the tank to stop them jumping out and the use of floating plants will help. For these fish to enjoy their stay, matured aquarium water is required at a temperature of between twenty three and twenty six degrees Celcius.

Shape wise, the fish has a long body, thinner at the front with a mouth that points upwards slightly. It has attractive fins on a gray green body which may have a dark line along the back with a spotted shiny thin band along the flank. The male's ventral and dorsal fins are more pointed than the female.

Breeding wise, eggs are either laid individually or in bunches that end up amongst the plants. Once laid it is best practice to remove the parents. The eggs will hatch in about a week and a half and you will have to be very careful with the fry as they are a bit delicate.

Madagascar Rainbow Fish - Bedotia geayi (Family: Atherinidae)

Keeping this fish in a shoal (not large) with water between 25 and 18 degrees centigrade will see them at their best in your community tank. It is an active swimmer and sturdy little fish that grows up to about 8 cms and likes to dwell in the top part of the aquarium. Although it has only come onto the scene a relatively short time ago this fish has become a favorite with aquarium lovers.

Body wise, it has a somewhat unique feature in that it has two dorsal fins, a short one and a long one. Color wise, the main color is olive green and there is a stripe along the sides of the fish from eye to tail. It is easy to feed as it it accepts most offerings so ideally give it a varied diet.

Breeding is easy for this species so you need to have thickly planted tank with hard water at a temperature of at least 26 degrees centigrade. Eggs laid will adhere to plants and the eggs themselves are quite big but you will have to wait a few days for completion as only a few eggs are laid per day. Bear in mind that due to the extended spawning period, fry will hatch and be at various stages of their development.

Medaka - Oryzias latipes (Family: Oryziatidae)

This fish is ideal for your tropical aquarium. It grows to about 5 cms, will consume most foods and can survive in a wide range of temperatures, although 20 to 24 degrees centigrade is the best for it. There are three other species of Oryzias that you may also come across under the name medaka but the Oryzias latipes is the main one.

With this fish there are no specific patterns on its mainly gold color. Its head is slimmer than you would normally expect and its body lengthier than usual. It is interesting to know that before breeding took place the original color was; well there wasn't one. It was transparent!

Males are somewhat smaller than females and have bigger fins. Breeding is relatively easy and the tank should be at the same temperature as the main tank, have floating plants and be thickly planted underwater with fine leaved plants. Until they have been fertilized, the eggs will stay attached to the end of the female.

It is best practice to take out all the plants with attached eggs from the tank to another one and after about two weeks the fry will emerge. Remove and feed on infusoria then fine dry food, then micro worms and other food for the more grown up fish.

So there you have it, three more excellent fish for your tropical aquarium collection.

About The Author
Paul Curran is webmaster at Fresh-Water-Aquariums-Guide.com and provides a care information system for fresh water aquariums at http://www.fresh-water-aquariums-guide.com/fsa-sales.html

The author invites you to visit:
http://Fresh-Water-Aquariums-Guide.com

Disease In Fish

Posted: 22 Aug 2010 08:00 AM PDT


Disease In Fish
by: Gordon Bloomfield


Disease in fish

You have set up your perfect aquarium, it has beautiful fish and a great look, but then something goes wrong, maybe your fish start dying, maybe they are showing abnormal behaviour. Chances are your fish have caught a disease. But don't panic! There are ways of treating it and making sure it is unlikely to happen again.

How does a fish get diseased?

In the aquarium and in your fish live many bacteria, viruses and life forms known as protozoan. Many of them are 'good' to have as they keep the balance just right. Even the life forms that cause the illness are present, but because of this balance they don't cause problems. However when a fish becomes stressed, either due to sudden changes or an unbalance such as a large amount of pathogens being introduced, it is at much greater risk.

How can you prevent it?

Making sure the aquarium is clean and taking precautions to monitor the levels within the aquarium is essential. Also making sure the fish can carry out their natural behaviour, such as hiding, by providing the right environment will reduce stress. This also means making sure none of the fish are bullying each other or are being timid of other species in the tank. You should also be careful when introducing new members, making sure they are healthy specimens without disease. Even with such precautions, disease may still take hold from time to time.

The first signs

It is important that you learn to spot the signs early so that you can treat it quickly and prevent it from becoming a bigger problem. The behaviour of the fish may become notably different. Reluctance to feed, darting around in an alarmed state, no balance, rubbing or darting past objects, hiding more than usual, being shy, or unusual positioning in the aquarium are all early warning signs.

More physical signs include swollen or distended appearance, fins discoloured, eroded or clamped to the fish. The gills may change colour, look sore or move rapidly. Eyes may look swollen or cloudy and the mouth may look eroded, sore or 'sticky'. You may notice that the fish has darkened or became paler or perhaps has spots or discoloured areas. You may even notice holes, ulcers, growths or sore areas on the body of the fish.

If you have noticed any of these signs you can now use the information below to determine what it is and how to treat it effectively.

Poor water quality or water poisoning

Symptoms: Fish gape at the surface, or hang by the surface. They have rapid gill movement and may lull onto their side. There may be patches of slime on the body or near the gills. Eyes may appear clouded and the colour of the fish may darken. The fish may also suddenly dart around before returning to the surface or losing balance. This may only show up in certain species depending on the cause

Causes: Poor water quality, meaning either high or low Ph levels, or high ammonia and nitrate levels. This could be caused by over stocking tanks with too many fish. It could also be due to chlorine or excess metals following a water change with untreated tap water. If certain species are showing it, it could be from excessive treatment of previous disease of which they were susceptible to an active ingredient, this applies to invertebrates especially. There also could be the possibility that a toxin has entered the water, household cleaner, sprays, room freshener and so on.

Care: Test the water for Ph and nitrate ammonia levels. Treat according to results. You should also perform a water change with pre-treated water (use a tap safe water treatment). Following that you should also try to work out the exact cause so to take precautions.

Swim Bladder

Symptoms: Unable to maintain balance, swimming upside down, on the side or being pushed to the surface. May also be unable to swim up and may hit the side of the tank and roll over. This is not accompanied by any other symptom.

Causes: A bacterial infection, or previous damage from a bacterial infection in the swimbladder. This means the fish cannot swim as normal and this in itself causes a lot of stress and if untreated, death.

Care: Treat with a preparation to treat swimbladder, be sure to follow the manufacturers advice. You can also use tonic salt in quantities of 5g per litre. This will help the fish right itself, although must be added over a few days to avoid shock.

Internal Bacterial Infection

Symptoms: Often the first sign is unexplained deaths as it has variable symptoms, which can at first indicate wrongly to other problems. These symptoms can include, fins appearing eroded or opaque, eyes becoming swollen, distended or a hollowing of the abdomen, holes or ulcers on the fish, the fish's colour becoming darkened and the fish being unable to maintain balance. However any one of these symptoms can show with any other, sometimes they don't at all.

Causes: An unbalance in the bacteria in the aquarium, as well as poor water quality. Will occur following stress by any factor and especially so if the fish has been wounded or fighting.

Care: Previously only veterinarian prescribed antibiotics have been effective, however you can now buy an internal bacteria solution to treat the water directly. You should also test the water for any unbalance and act accordingly.

Bacterial Gill disease

Symptoms: The fish will gaps and hang at the surface of the water and you may notice rapid gill movement, the gills will also look pale and in severe cases look eroded.

Causes: A bacterial infection usually at the onset of an internal bacterial infection. However this is localised to the gills for the time. An unbalance in the water quality and stress can cause this to happen.

Care: Like an internal bacterial infection you could only previously use veterinarian prescribed antibiotics. However swift treatment with an internal bacteria solution will remove the threat directly. You should also test the water for any unbalance and act accordingly.

Fungus

Symptoms: Bulges that are white or cotton wool like growths, particularly on the head and sides.

Causes: An imbalance of the fungal spores naturally found in aquaria, usually after stress or damage to gill or mucus membrane.

Care: Use an anti fungus treatment for freshwater fish. Check that the water quality is okay and that there is nothing damaging your fish.

Fin Rot

Symptoms: Fins appear eroded, opaque and may have streaks of 'blood' running through them.

Causes: Unbalance of naturally present bacteria, usually after the fish has been stressed.

Care: It is important to treat this promptly before it reaches the base of the fin. Treat with an anti fungus and fin rot treatment and check water quality.

Mouth Rot

Symptoms: There may be some erosion on the head but more focused around the mouth, there may also be some cottonwool like growths around the mouth area.

Causes: Unbalance of naturally present bacteria, usually after the fish has been stressed.

Care: An anti fungus and Fin rot treatment should clear it up, follow with a water test. It is important to act quickly.

Slime Disease

Symptoms: Patches of slime accompanied by flicking and rubbing against objects, as well as cloudy eyes. You may also see the fish gaping or hanging near the surface and the gills may appear pale although this isn't always seen.

Causes: Stress allows parasitical infection from parasites naturally present.

Care: Use an anti-slime and velvet treatment, test the water and remove any areas of stress.

Velvet

Symptoms: The fish will have an abnormal peppering of golden spots and will rub against objects in the aquarium. The fish may have pale gills and gape at the surface, but this isn't always seen.

Causes: Unbalance of naturally present parasites, usually after the fish has been stressed.

Care: use an anti-slime and velvet treatment, testing the water and removing any stress factors.

White Spot

Symptoms: There will be lots of abnormal white spots, about the size of a grain of sugar, accompanied by flicking and rubbing against objects in the aquarium. The fish may also gasp at the surface and have pale fins.

Causes: Unbalance of naturally present parasites, usually after the fish has been stressed.

Care: Use a white spot treatment preparation and lower the temperature of the aquarium by a few degrees for a week. Remove sources of stress.

Higher form parasite

Symptoms: The fish may gape and hang at the surface. It will have pale gills that may sometimes appear eroded. It will rub along solid objects and plants and may try to jump out of the water but most obvious is that it will have pale discs, worm like attachments or thread like discs on the body or gill area.

Causes: There are several causes, usually from infection from wild caught or infected stock. The offenders are mainly crustacean and have different appearances. Anchor worms are up to 20mm long and bury into the skin of the fish. Fish Lice are disc shaped parasites that feed on the mucus membrane, on skin or the fins. They can cause bacterial infection. Gill maggots are found attached to the gill area, as well as in the mouth and are called such because of the maggot like egg sack that is often seen. They can all cause death, but gill maggots even more so.

Care: Use an anti crustacean parasite treatment as soon as you notice any symptoms. Read the instructions carefully as they can have some side effects on the condition of your aquarium. If possible try to identify the source of your problem and deal with it appropriately.

http://www.allpet.co.uk

http://petandreptile.blogspot.com

About The Author
I am a pet retail business owner and internet marketing entrepreneur. Offering pet products and information, online money making opportunities. Automated income systems. New ebooks and marketing programmes for sale.

The author invites you to visit:
http://www.allpet.co.uk

casino games

The best casino for some people is a casino located on the World Wide Internet. An online casino is the best casino for people to visit suddenly. It is also the best casino for people who want to feel safe and secure in their home while they are learning to play the tapering your skills, then this is the time you know firecasinos.com and choose among the various casino games that that you will register your account and have the opportunity to have fun a lot today, the safest online casino are on firecasinos.com.

The PetsitUSA Blog

The PetsitUSA Blog


PetsitUSA has a new look!

Posted: 25 Aug 2010 07:25 AM PDT

PetsitUSA has a new look! It’s sleek, up-to-date, and easier than ever to find what you’re looking for – someone to take care of your pets!

Our goal, in redesigning the website, wasn’t just to make PetsitUSA prettier – although it certainly is that! The new website gives our pet sitter, dog walker, and dog daycare members more features to tell potential clients about their businesses. They can now post images, lengthy descriptions about their services, and even links to their social media profiles.

And, for pet parents who visit PetsitUSA, it’s easier than ever to find that one special pet care provider to care for your pets. While the search feature on our old website was pretty prominent, it’s even more so on the new PetsitUSA! So, when you search for a pet sitter, dog walker, or dog daycare in your neighborhood, you’ll be able to find out more about that company through their expanded business listing.

We also have a number of articles that pet owners and pet professionals alike will find helpful. And we’ll be building on this as time goes on – adding more articles and information for pet parents.

I’m really excited about the new PetsitUSA website and I think you will be too! So, take a look around, and please come back and let us know what you think.

I look forward to hearing from you!