Weaning methods using formulated feeds for snakehead ( Channa striata and Channa micropeltes ) larvae

Abstract

The culture of snakehead fish (Channa striata and Channa micropeltes) in Vietnam is limited, and snakehead culture has been banned in Cambodia, because traditional practices include capture of fingerlings from the wild as seed, as well as capture of small-size (also known as trash fish or lowvalue) fish. As hatchery breeding technology has improved, we investigated the optimal weaning practices for these two species. Both laboratory experiments and farm trials were conducted. For C. striata, the optimal weaning procedure is to begin at 17 days after hatch (dah) and wean the fish at 10% replacement of live feed with formulated feed per day. However, for C. micropeltes, the optimal procedure is to wait until 40 dah to begin weaning and then to wean the fish with a 10% replacement of live feed with formulated feed every 3 days. These results should enable farmers to domesticate snakehead culture in Vietnam and Cambodia and eliminate reliance on fish captured from the wild as both seed and feed.

Cannibalism mitigation in striped murrel, Channa striata, with hatchery seed weaned on pellet diet: A review

“…Once the larvae start feeding fish mash profusely, 10%–15% grounded pellet feed suitable for the larvae (say CP 45%–50%, lipid 10%) has to be mixed in it with the gradual replacement of an equal amount of fish mash every day in such as manner that the fish mash is totally replaced with formulated diet within 7–8 days or in a maximum 10 days. Hien et al 108 have also reported more or less similar result with higher weight gain and low of cannibalism rate when the feeding was changed from live chopped fish with that of formulated feed at 10% daily replacement. This way the larvae could be weaned on a grounded formulated diet within 35 dph.…”

PKM PENINGKATAN MUTU DAN PRODUKSI IKAN GABUS (Channa striata) DI KELOMPOK PEMBUDIDAYA IKAN HARAPAN KITA DESA JEJANGKIT MUARA, BARITO KUALA

“…Gambar 5. Pengukuran panjang dan bobot ikan gabus Studi tentang penggantian ikan rucah oleh pakan pellet pada ikan gabus menunjukkan tingkat pertumbuhan yang lebih baik dan lebih menguntungkan (Hien et al, 2015;Hien et al, 2016;Hien et al, 2017). Mengganti ikan rucah dengan pakan pellet memberi lebih banyak manfaat dalam biaya makan dan mengurangi ketergantungan pada pasokan ikan rucah.…”

Dietary monosodium glutamate supplementation during the feed training of pacamã (Lophiosilurus alexandri): Growth performance and intestinal histomorphometry

“…In intensive cultivation systems of carnivorous fish, low survival rates for fingerlings and juveniles are mainly attributed to the non-acceptance of formulated diets and high rates of cannibalism (Hien et al, 2017;Su et al, 2020). Such non-acceptance can be attributed to the dry texture and low palatability of formulated diets for this kind of fish (Perera et al, 2016).…”