Rotifers (Rotatoria) — the smallest of multicellular animals, together with the ciliates are part of the so-called “living dust”. Their sizes vary from 0.04 to 2 mm. Its name rotifers received for the presence of a rotary machine consisting of two beaters of the cilia on the anterior part of the body. The movement of the cilia creates a whirlpool through which small food organisms are sent to the mouth. Simultaneously with this apparatus, many forms of rotifers is swimming. Rotifers are less mobile than the infusoria, which makes them more desirable starter feed for larvae of the vast majority of fish. Small size, high proliferation rate, as well as the possibility of sustaining a culture in pure form do rotifers are very easy targets for rearing of juvenile fishes. The most commonly cultivated of the saltwater rotifer Brachionus plicatilis, because its the easiest to maintain in pure culture. This small rotifers — 100— 300 microns. The average weight of 1 million rotifers — 1.5 g Eat phytoplankton, bacteria, yeast. Males live for 2-3 days, females up to 2 weeks. Sexually Mature in 1-1. 5 days. Actionsee females reproduce by parthenogenesis, laying (2N) eggs. Misticheskie — give eggs, of which face males (N), or participate in pairing, putting resting (2N) eggs. The eggs are heavier than water. Rotifers coltivirus capacity 3-100 l, reaching a density of 100-300 individuals per 1 ml. Desirable very weak purge and side lighting. Culture enters stationary strength for 5-7 days.
The technology is extremely simple: take a piece of yeast the size of a large pea and fingers rubbed at the Bank of rotifers. Once the water clears up (for me it’s usually 2-3 day) add the next portion. I feed her fresh yeast or dry. Rotifer does not like strong aeration, if we use a very weak blow. I don’t use at all, then all culture is concentrated in the upper layer. The system itself is organized in the following way: on the windowsill is a three-liter Continue reading
As mentioned earlier. the breeder should tell you how and what to feed your Labrador puppy. It needs you to make a menu so you can stick with the first two weeks for the normal digestion of your pet. If you want to change the diet, the change should be gradual.
Feeding puppies from 8 weeks to 6 months.
Eight-week puppies are fed 4 times a day, one of which consists of dairy foods and the remaining three from thick food. Dairy food are best prepared from a special milk formula for puppies. Be sure to follow the directions on the package.
Dense food you can cook yourself or ready to use a special feed for growing puppies. As when feeding an adult Labrador you can choose between ready-made dry food and canned. When cooking, follow the directions on the package.
If you are only using ready to feed, you can eliminate the addition of reinforcing agents. So to soften dry food you can add yogurt. In the preparation of homemade food such supplements are necessary to keep your dog is getting enough calcium, vitamins and minerals. In the diet with homemade food, you can include:
kefir 1%; Continue reading
In nature only a few survive to extreme old age, due to objective reasons.
But even in captivity, the turtles on the strength make it to the middle of that age, as if completely absent of external hazards. How long can a slider turtle live in a terrarium? How can I prolong their life?
How to determine the age of red-turtle?
Sell slider turtles at an early age, when the carapace reaches a length of not more than 7 cm At the time of purchase it is better to give preference to younger ones because they are easier to survive, and will live longer.
Over the years, the turtle can grow up to 30 cm . that will require a larger terrarium and resettlement of a few turtles from each other. Therefore it is better to know in advance what the potential growth is of this or that individual and which “house” it is better to buy.
To determine the age in two ways:
By measuring the length of the shell, taking into account the annual growth of a turtle on 2-3 cm; Continue reading