The use and future of animal proteins in dairy cow diets

[Lance]

Rather disconcerting… now I understand why different nations do not want US milk products..
 

Animal protein (animal byproduct meals) sources have been used in dairy cattle feeding programs for years. Products such as blood meal, fish meal, meat and bone have long been known for their ability to supply rumen-undegraded protein and, more recently, metabolizable protein and critical amino acids (lysine, methionine).

Blood meal is one of the most commonly used lysine sources in dairy cattle diets to meet amino acid needs. However, when fed as a commodity, blood meal is often characterized by inconsistency and variability.

Also, the source of blood meal from either porcine or poultry sources has been brought into question. There is some evidence that suggests poultry blood meal is less digestible by the dairy animal when compared to pork blood meal.

Trials at the University of Minnesota have illustrated the variability of lysine levels in blood meal. One study compared four samples of blood meal for lysine percentage, percent rumen-undegraded protein, percent lysine digestibility and percent metabolizable protein in the lysine.

Lysine digestibility is one of the most important values because it shows how much of the lysine can be utilized by the cow.

https://www.agproud.com/articles/19028-the-use-and-future-of-animal-proteins-in-dairy-cow-diets

Edited Wednesday at 08:41 PM by Lance

[JBee]

This just makes me feel better about being very lactose intolerant 😅

[Ahuvah]

10 hours ago, Lance said:

Rather disconcerting… now I understand why different nations do not want US milk products..
 

Animal protein (animal byproduct meals) sources have been used in dairy cattle feeding programs for years. Products such as blood meal, fish meal, meat and bone have long been known for their ability to supply rumen-undegraded protein and, more recently, metabolizable protein and critical amino acids (lysine, methionine).

 

https://www.agproud.com/articles/19028-the-use-and-future-of-animal-proteins-in-dairy-cow-diets

Kia Ora Lance. 

This is a deeper problem than many realize.  My hubby worked in the abbatoirs 25 plus years ago. There some cattle that had died, and he was asked to render them down for cattle feed up north. He came home disgusted.  And that's in NZ!