Pematangan gonad induk kodok lembu. Maturtiion are cultivate broodstocks after, and before spawning so that gravid. In oder to get broodstock in high quality, cultivate divided in four activities, these are pond preparation, stocking, feeding, and selecting. In high quality broodstock can produce eggs high in quality, where these hatch fastly and high in hatching rates.
Tadpoles from it, can growth in high, and high in resistant to environment change, and disease attack. Also these can produce high in quantity. A good broodstock 500 gram in weight can produce 20.000 – 40.000 eggs, and can hatch 70 - 80 percents.
Broodstock ponds dryed by opening outlet. Muds, rest food, and other dirty are outed by sweeping bottom, and walls of ponds. In order clearer, inlet opened to watered bottom. After clear, inlet closed, and dryed in the sunshine for 2 – 4 days, depend of seasons.
Drying is interesting to cut diseases cyclus. After drying, pond watered 3 – 5 cm in high, by closing outlet, and opening inlet. The aim of ponds preparation is for making good environment, because broodstock need it. In the bad environment, will be attacked diseases.
Broodstocks stocked in the morning, when low temperature. It’s to avoid stress. Density must optimal, don’t lower, don’t higher. Low density can cause ineficient in area. Broodstock only stand in a part of pond, other area empty. Low density also cause low in feeding.
In fact indicate, that bullfrog feed in higher because follow the others. High density cause space too narrow. It can cause over load. Bullfrog need 1,5 part of body. Optimal density of broodstock are 40 – 60/ m2. In maturition, males and females cultivated separated each others.
Feeding is in the morning. Before it, ponds dryed by opening outlet, but broodstocks don’t outed of ponds. It’s done for lossing rest food, and excretion of broodstocks to out of ponds. In order clearer, inlet opened to watered bottom, bring rest food, and excretion to outlet.
After one hour, outlet closed, and water irrigate continuously, 3 – 5 cm in high. The aim of this activity is for making good environmen. In fact, bullfrog likes with freshwater, without rest foods, excretion, and polutants. Bullfrog will high in feeding in this situation.
Kind of feed is floating pellets (floating artificial feed). Floating pellets are stocked to all of part ponds. These will float in the water. Broodstocks smell it, and these will move, and catch the feeds. In order eficient, feeding must be regulated.
Food over cause food destroye, and loss. Don’t along time, bullfrog feed. It feed when hungry, go if it satisfiied. Therefore foods must be fed every two hours, are in 09.00 o’clock, 11.00 o’clock, 13.00 o’clock, 15.00 o’clock, and 17.00 o’clock.
Broodstocks sellectied after three months, by choising, and separating, or taking broodstock in gravid. It’s done by seeing stomach and movement in females, seeing neck and voice in male. In gravid, females have swollen in stomach, and slowly in movement. Other sign, from sex hole out mucus white in colour.
Males have dark green, and yellow in the neck. Males also agresive in movement. Sometimes, male opten climb the other. Other sign, these have hard in voice, harder before. If it has seen like that, the broodstocks are ready to spawned.
Tadpoles from it, can growth in high, and high in resistant to environment change, and disease attack. Also these can produce high in quantity. A good broodstock 500 gram in weight can produce 20.000 – 40.000 eggs, and can hatch 70 - 80 percents.
Broodstock ponds dryed by opening outlet. Muds, rest food, and other dirty are outed by sweeping bottom, and walls of ponds. In order clearer, inlet opened to watered bottom. After clear, inlet closed, and dryed in the sunshine for 2 – 4 days, depend of seasons.
Drying is interesting to cut diseases cyclus. After drying, pond watered 3 – 5 cm in high, by closing outlet, and opening inlet. The aim of ponds preparation is for making good environment, because broodstock need it. In the bad environment, will be attacked diseases.
Broodstocks stocked in the morning, when low temperature. It’s to avoid stress. Density must optimal, don’t lower, don’t higher. Low density can cause ineficient in area. Broodstock only stand in a part of pond, other area empty. Low density also cause low in feeding.
In fact indicate, that bullfrog feed in higher because follow the others. High density cause space too narrow. It can cause over load. Bullfrog need 1,5 part of body. Optimal density of broodstock are 40 – 60/ m2. In maturition, males and females cultivated separated each others.
Feeding is in the morning. Before it, ponds dryed by opening outlet, but broodstocks don’t outed of ponds. It’s done for lossing rest food, and excretion of broodstocks to out of ponds. In order clearer, inlet opened to watered bottom, bring rest food, and excretion to outlet.
After one hour, outlet closed, and water irrigate continuously, 3 – 5 cm in high. The aim of this activity is for making good environmen. In fact, bullfrog likes with freshwater, without rest foods, excretion, and polutants. Bullfrog will high in feeding in this situation.
Kind of feed is floating pellets (floating artificial feed). Floating pellets are stocked to all of part ponds. These will float in the water. Broodstocks smell it, and these will move, and catch the feeds. In order eficient, feeding must be regulated.
Food over cause food destroye, and loss. Don’t along time, bullfrog feed. It feed when hungry, go if it satisfiied. Therefore foods must be fed every two hours, are in 09.00 o’clock, 11.00 o’clock, 13.00 o’clock, 15.00 o’clock, and 17.00 o’clock.
Broodstocks sellectied after three months, by choising, and separating, or taking broodstock in gravid. It’s done by seeing stomach and movement in females, seeing neck and voice in male. In gravid, females have swollen in stomach, and slowly in movement. Other sign, from sex hole out mucus white in colour.
Males have dark green, and yellow in the neck. Males also agresive in movement. Sometimes, male opten climb the other. Other sign, these have hard in voice, harder before. If it has seen like that, the broodstocks are ready to spawned.
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