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Author Topic: Feed Supplements:  (Read 4964 times)

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mikey

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Feed Supplements:
« on: January 30, 2008, 07:23:13 AM »
Hog Concentrates-that provide protein,amino acids,vitamins and minerals are given as the major componet,anything else is considered a feed supplement,when mixed together.According to my sources,sweet potato tops,kang kong and other green leafy feeds should be given only as FEED SUPPLEMENTS.Mongo and beans can be used as a substitute for soybean oil meal.Fresh leftover food from the kitchen should be fed to pigs.These may be rice and or corn,the gills and entrails of fish,papaya,banana peelings,sweet potato and other scraps.Cooking makes the feed digestible,palatable,and safer to eat.
« Last Edit: February 21, 2008, 02:42:30 AM by mikey »


mr hog

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Re: Homemade Hog Mash For Breeding Sows:
« Reply #1 on: January 30, 2008, 11:42:51 AM »
Hey mikey even if it only works on the sows that would be great savings! Please let us now how much in the long run you will save I am very much interested.


mikey

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Re: Feed Supplements:
« Reply #2 on: March 10, 2009, 08:38:30 AM »
Low protein diets 02 Feb 2009
Author: Ioannis Mavromichalis
I have been often asked whether pig formulas should be formulated with the minimum or maximum crude protein concentration possible. Assuming cost is about the same, I have always favoured low-protein diets. Nevertheless, this should not be taken as a universal statement, because there are conditions, mainly economical, under which a low-protein diet is not profitable. But, let’s see first, why low-protein diets are beneficial from a biological point of view and how this translates into more money for the producer!
To begin with, a low-protein diet is one that provides all required amino acids without excesses. To lower the protein concentration of a diet, the use of synthetic amino acids is of paramount importance, and here is where economics must play in favour of the lower-protein diet. As of today, only crystalline lysine, methionine, threonine, and tryptophan are commercially available. As such, we must continue to provide some excess protein in order to cover the needs of other essential amino acids, such as valine and isoleucine. Thus, the question becomes, how much can we lower crude protein?

The answer is rather easy but it has taken many years of research to find out! Under most conditions, a 2% points reduction in crude protein by using crystalline amino acids (for example, from 18% to 16% crude protein in the diet) creates no problems in animal performance or carcass characteristics. A 4% points reduction requires a bit more work. For this, other amino acids, such as valine and isoleucine must be well balanced. And in addition, all amino acids should be expressed on a true ileal digestible basis, whereas the energy of the diet should be expressed using a (good) net energy system.

But, let’s get back to why low-protein diets are beneficial. First, the animal benefits from less excess protein (nitrogen) that has to deaminate (detoxify) as free nitrogen in the blood system is toxic and must be excreted (via urine). This brings us to another benefit, namely less urine production and consequently lower demand for water. This translates to less manure volume! In addition, what manure is produced is lower in nitrogen, not only because of less nitrogen in urine, but also because with lower-protein diets, protein digestibility is increased and as such less nitrogen is excreted in faecal matter. A good way to protect that environment of ours! Not to mention the less land needed to dispose the manure, which is a constant headache in many parts of this world.

Now, as the animal has less excess protein to get rid off (an energy consuming process), it is left with some spare energy and here we run the risk of increasing carcass lipid concentration if we are not vigilant. This becomes especially tricky as we go from 2 to 4% points reduction in dietary crude protein concentration. And, here is where the use of the net energy system is of most importance. As net energy is expressed independently of dietary crude protein (a problem inherent in the metabolisable energy system), we can formulate low-protein diets without increasing carcass fatness! As such, we can take advantage of the energy ‘surplus’ and direct it to lean tissue deposition. This means, lower feed/gain ratio, a good thing always, and of course, lower cost of production.

In conclusion, low-protein diets are good for the animal, the environment, and the producer. All these, assuming the cost of crystalline amino acids does not rob us of all these benefits! But, this is something you should take up with your amino acid supplier!


gunder_3910

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Re: Feed Supplements:
« Reply #3 on: June 20, 2010, 09:06:36 AM »
Thanks Mikey. Your posts make true & valuable information effective for us. I have learned much from your posts since I am getting the feel of what to do with my hogs. To be honest, I do not have any background in hog raising because I grew up in the city. Ironically, my parent's family are farmers & left us with much to do. I only manage farmers & try to see to it their well being is provided for. So I have provided some livelihood for them so they can likewise take care of my parent's farm. In the past few months, my sows are beginning breed. I did not loose a single stock because of good workers & constant monitoring. But I have to also credit your valuable contribution for me & to everyone's success as well. More power to you & good health to your family.

 

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