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New Library Article - Edible Flowers for Shrimp


jayc
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Article - Edible Flowers for Shrimps

 

We have been discussed and talked about feeding shrimp leaves and fruits on many occasions. And the results are quite well documented in the use of leaves like Mulberry, Oak, Indian Almond (Kattapa), etc.

However, the idea of feeding shrimp flowers is still very new. After all in the wild, things like leaves, twigs, branches AND flowers all drop into rivers where native shrimps will use a food source.

In terms of nutritional value, you will find nutrients and minerals in flowers that are lacking in leaves (and vice versa).

I'll expand on one of the main benefits of a nutrient found in flowers that aren't present in leaves a bit later.

HOWEVER, NOT ALL FLOWERS ARE SAFE FOR EATING!!

 

So we will start with those flowers that are known to be edible.

Of course that are literally hundreds of varieties of edible flowers. We all know about cauliflower and broccoli, those are some common flowers we eat regularly.

My experiment is limited to what I could source close by.

The flowers I tested on my shrimp include Rose, Nasturtium, Dandelion, Chrysanthemum and Pansies.

Caveat: I KNOW for sure that these flowers in my backyard have not been sprayed with anything else apart from tap water and rain. No pesticides, fertilisers. If in doubt, DON'T use it.

You could try other flowers that are easily sourced in your garden.

But please note - I have limited my research and experiments to flowers only. Not the leaves of these flowers. As a cautionary warning, some leaves are sappy and oily, and might not be too safe to feed your shrimp. So I take no responsibility with the leaves of these flowers. Although, Ineke has fed Nasturtium leaves to her shrimp which they seem to like and was safe as mentioned in another thread.

 

Preparation:

1) Pick fresh looking flowers with no visible damage. Select flowers that you KNOW have no previous pesticides or fertilisers, and don't grow down stream from sources of water that might be contaminated.

2) Gently wash them (flowers are very delicate and soft) if there is dirt on them.

3) Remove as much of the base of the flower (the stem, receptacle and sepal). Usually only the petals are what we want.

flower parts.jpg

4a) Place into tank fresh. (Recommended)

4b) Or Blanch it for 1-2 minutes in hot boiling water. Remember, flowers are soft, they don't need to be blanched for much longer. (not a necessary step).

4c) Freezing or Drying. While it's possible to freeze or dry flowers for storage and feeding at a later date, I'm not sure what nutrients will be lost.

5) Ensure any decayed leftovers are removed if left uneaten after a few days.

 

Review of the flowers:

I have searched high and low in the scientific literature for quantitative data on the nutrient content of flower petals. There are relatively few references, particularly in English.

Most of the literature is focused on evaluating flowers for their sensory characteristics, such as appeal, size, shape, colour, taste, and above all, aroma, which is important for the cosmetic and perfume industry.

Available data on a number of edible flowers show that petals also contain an array of vitamins and minerals, particularly vitamins A and C, various B vitamins, folic acid, and minerals including calcium, magnesium, potassium, iron and phosphorus.

Apart from the nutritional value of flowers with the abundance of vitamins and minerals, flowers also contain a huge amounts of carotenoids and flavonoids compared to leaves. Specifically, Crytoxanthin, Zeaxanthin and Lutein which is obviously lacking in the leaves. Just look at the pretty colours of flowers.

Zeaxanthin and Lutein has been known as a natural source of colour enhancement in fish (and maybe shrimp). These carotenoids are regularly added to fish food from sources like spirulina. Zeaxanthin enhances the Reds and Oranges while Lutein enhances Yellows.

Flowers are also high in antioxidants, they are antiseptic, antifungal and anti-inflammatory. This sounds too good to be true. It's like feeding medicine to your shrimps to fight viruses and bacteria.

 

 

On to the review of specific flowers.

Dandelions:

NH-MA11-dandelion-plant.jpg

Say what?! That's a weed!

It sure is, and I have heaps growing in my front garden. Now I have a use for them.

Dandelion is a perennial plant with jagged, bright green leaves to 30cm long, a hollow flower stem to 30cm and one terminal yellow daisy. Has been subject of many studies investigating it's ability to even fight cancer!

Dandelions, contain numerous flavonoids and carotenoids with antioxidant properties, including four times the beta carotene of broccoli, as well as lutein, cryptoxanthin and zeaxanthin. They are also a rich source of vitamins, including folic acid, riboflavin, pyroxidine, niacin, and vitamins A, B, C and D. Minerals including iron, potassium and zinc.

The rich yellow colour of dandelion flowers comes from beta-carotene - Lutein specifically.

Side note: the leaves are apparently also really high in Calcium (187mg per 100g), rivalling Mulberry leaves. But I have not tried feeding Dandelion leaves, nor do I know if they are safe. But people eat them. The Chinese, European and Native American have been using the dandelion plant for centuries to treat digestive, kidney and liver ailments.

I fed my shrimp a fresh dandelion as one experiment. The first day in the tank, the shrimp investigated it, but didn't seem to be eating. It wasn't till the 3 day that I noticed them actually munching on the flower. The petals probably needed to soften first.

The second experiment was with a blanched dandelion. This time the shrimp took to it the same day. And average sized flower was consumed within 3-4 days in my tank.

Verdict: Big tick. They loved it. Too early to tell if there is any impact on colouration of the shrimps.

 

 

Nasturtiums:

Nasturtiums.jpg

Nasturtium is a PERENNIAL growing to 0.5 m (1ft 8in) by 1 m (3ft 3in). It is part of the Watercress family. The most common variety is Tropaeolum majus. The peppery flowers are good in salads and pasta dishes.

A 2009 study by the Universidad Nacional de Colombia identified the group of phenols or phenolic compounds in the pigments of orange and red flowers of Tropaeolum majus as anthocyanins. Anthocyanins, which are abundant in blueberries and red cabbage, help neutralise the damaging effects of free radicals, thereby helping to protect us from chronic diseases such as cardiovascular disease and cancer. Anthocyanins are anti-inflammatory, antimicrobial, anticancer and antioxidant.

Nasturtiums are high in Vitamin C, about 45 milligrams vitamin C per 100 grams, and also contain Vitamin A and flavonoids anti-oxidants like - carotene, lutein and zeaxanthin.

They also contain Minerals like Iron, Calcium.

Nasturtiums might not pack as much nutritional value as dandelions, but it sounds great to feed shrimp occasionally, to combat diseases due to it's antibiotic, antiseptic, and antifungal properties.

I fed Nasturtium flowers to my shrimp in a similar fashion to Dandelions. Fresh and Blanched.

The shrimp had very similar reactions. They ate it when the flowers were soft.

Verdict: Another big tick. They loved it. Too early to tell if there is any impact on colouration of the shrimps. I do have one shrimp that looks unwell. I'm keeping an eye to it to see if there are any improvements.

I won't go into detailed reviews on the Rose, Pansies or Chrysanthemum flowers, as I couldn't find much information on it's nutritional value. But the results are very similar.

There are dozens of other edible flowers that could be introduced to your shrimp as long as you take the necessary precautions on where you collect these flowers.

Some other possibilities include:

Daisies, Sunflowers, Daylilies, Violets, Tulips.

 

 

 

Just a word of caution for anyone trying.

Please stick to flowers we know are edible. If in doubt check this list.

http://www.westcoast...edible-flowers/

 

 

Many flowers have antiseptic, antibacterial and antifungal qualities.

If you have suspected recent bacterial issues with your shrimps lately, try feeding flowers and report back on your findings.

These are some, and by no means the only, flowers that exhibit antiseptic, antibacterial and antifungal qualities:-

Basil flowers, Bee Balm (Bergamot) flowers, Borage flowers, Echinacea flowers, Pot Marigold flowers, Chamomile flowers, Chrysanthemums flowers, Garlic flowers, Nasturtiums flowers, Onion flowers, Oregano flowers, Pansy flowers and Violet flowers.

Please note - I am talking about the flowers here. So when you see Basil for example, that's the Basil flowers, not the leaves. Even-though the Basil leaves are edible, I cannot vouch for the leaves from some of these other flowers.

 

If nothing else, this is another nutritious, natural food source for shrimps.

My shrimps have shown to love eating flowers, and usually devour them within 1 to 2 days after placing in the tank.

Hold the flowers down the same way you'd hold mulberry leaves or other plant foods down.

 

While we are at it, it's probably best to name some flowers to AVOID, as these are considered poisonous.

Primulas, Primroses, Polyanthus, Iris, Daffodils, Nghtshade, box wood, foxgloves, amaryllis, clematis, bryony, buttercups, begonia, columbine, lily of the valley, sweet pea, Brachycome, Nolana, Rudbeckia, periwinkle, oleander, dogbane, aconite.


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