Vegetable proteins can replace animal proteins

Generally, a good review, as Dave indicated. Vegetable source proteins have their own “problems” as do animal sources. Bear in mind the “ease” of using one or the other exclusively depends on the animal. Herbivores employ a rumen or cecum with microbes doing the “work” to provide a “balanced” protein. Carnivores have adapted to optimize use of flesh, I.e. animal proteins. We largely need to provide for “omnivores”, which have the capacity to do well with the combination, but not as well when confronted with the exclusive use of one or the other. A meaningful part of this revolves around the NEAA and less so the EAA. Cystine, glycine, serine and proline can be readily accommodated by selective sourcing of animal products whereas vegetable products are typically very low by comparison. The aforementioned AA play a big role in GIT mucus formation, and their “immediate” access from the lumen enables ready response to surface “aggravations.” They can be synthesized but delay has its repercussion on relative productivity. There is no question that vegetable source dietary proteins can entirely replace animal products, but do not expect to readily impose a concurrent decrease in CP without some background “noise.”

Very good topic, but before accepting this idea generally we have to adopt the idea of synthetic amino acid fortification of diet to compensate for limiting amino acids. though in poultry we have adopted all plant-based diet and it seems very well, but still we need more research to determine why fishmeal based diets perform better than fish meal free diet. Is this related to higher amino acid digestibility in fishmeal based diet compared to all plant-based or it does related to higher Se or better composition of fatty acid profile? However, it is clear that without animal protein source it is still possible to have a poultry industry, but without soybean which is god's gift to the animal industry, it would be very hard to maintain current poultry and swine industry.

Some few vegetable proteins can replace animal proteins. The most common limitation of vegetable proteins is lack of amino acid profile of essential amino acids, such as lysine and methionine.

Undoubtedly, the digestibility of amino acids in animal protein sources is better than that of plant origin and if they are poorly processed even more but the use of exogenous enzymes especially protease and good processing help a lot and, if applied, glucanases and mannanases are excellent.

I have been replacing fish meal, animal plasma and blood meal in piglet preinitiators for three years with a 65% soy protein and the results are excellent and at the lowest cost. I am now trying to replace the whey with molasses cane using an equivalent of 50 sucrose to lactose in molasses.

Dear Dare the results are similar or better than the results using animal protein I can share the diets with the permission of Carlos Avilan from Engormix and I invite you to the Dominican Republic to see and measure the parameters.

We are contemplating replacing the whey with molasses and sugar cane to produce a 100% vegetable diet.

The engineer Atuey Martínez has more than three years using the diets -presented here with the help from Carlos from Engormix- and is very happy with the results and as I inform you we are testing to replace the whey with the cane molasses and elaborate 100% vegetable diets

In Nigeria here, we have successfully fed breeding, broiler and laying chickens with the processed leaf. Particularly, the leaf meal have been the partial or the main source of vitamin-mineral for the stocks. Leaf meal as sources of protein and fibre for pigs and poultry have been achieved too. You are free to explore our modest contributions here in Ibadan Varsity and other institutions here in Nigeria for these.

Forage legume leaf meal and other high-protein plants are good sources of vegetal proteins and I experimented in poultry and pigs with good results.

Those diets that Carlos Avilan presented in the forum have been used for more than three years and the results are excellent and the piglets are in good health and without any deficiencies. We only use dairy whey and soy protein and soy bean meal and corn and fortify with synthetic amino acids.

Ahmad Karimi Rightly said.... Fatty acid profile does the magic for essential nutritional supplementation.