Calculating Protein Percentages of Eggs and Peas

[Kiki]

Feeding to much protein can cause over weight too right?

 

[ChickenCanoe]

Feeding to much protein can cause over weight too right?

It can also cause visceral gout from the load on the liver. I think as many people over feed protein as there are those that feed insufficient amounts.
Mature roosters do just fine on 13% protein. Laying hens do best on 17% protein. 22% protein should be reserved for the first few weeks of a meat bird's life.
18-20% protein is about right for chickens from 0-12 weeks. They can be slowed down from there depending on their ultimate purpose.

 

[X_and_Z]

Feeding to much protein can cause over weight too right?

Weight is primarily dictated by total calories regardless of whether those calories come from fat, protein or carbohydrates.

If chickens only ate the to fulfill the number of calories to keep them at proper weight they would never be fat (lots of other problems would still be on the table). So it seems that total calories + nutrient needs play into what dictates chickens will eat. If they are eating an imbalanced diet they continue to eat so that they exceed their caloric needs but meet nutritional requirements for fat/protein/carbohydrates/vitamins/minerals to some extent.

 

[Kiki]

It can also cause visceral gout from the load on the liver. I think as many people over feed protein as there are those that feed insufficient amounts.
Mature roosters do just fine on 13% protein. Laying hens do best on 17% protein. 22% protein should be reserved for the first few weeks of a meat bird's life.
18-20% protein is about right for chickens from 0-12 weeks. They can be slowed down from there depending on their ultimate purpose.

I have read (in a real book--not a blogger) and I can't find it for the life of me...but I read that feeding a feed that is too high in protein to a bird that does not need it is bad = over weight bird.
Do you know where I read that?

 

[Kiki]

Weight is primarily dictated by total calories regardless of whether those calories come from fat, protein or carbohydrates.

If chickens only ate the to fulfill the number of calories to keep them at proper weight they would never be fat (lots of other problems would still be on the table). So it seems that total calories + nutrient needs play into what dictates chickens will eat. If they are eating an imbalanced diet they continue to eat so that they exceed their caloric needs but meet nutritional requirements for fat/protein/carbohydrates/vitamins/minerals to some extent.

YES!

I like this!

 

[ChickenCanoe]

I have read (in a real book--not a blogger) and I can't find it for the life of me...but I read that feeding a feed that is too high in protein to a bird that does not need it is bad = over weight bird.
Do you know where I read that?

I've gleaned that from scientific studies and text books. If I get the time I'll try to cite some for you.
Primarily what happens with excessive amino acids is that they are processed by the liver and are excreted as nitrogenous waste which becomes ammonia in the bedding.
A feed can be high in crude protein and still deficient in some essential amino acids. The excess of non-essential or unneeded essential amino acids ends up in the bedding. A vegetable based diet can be a problem unless non-essentials are kept as low as possible while providing more of the limiting amino acids in synthetic form.

 

[Kiki]

I've gleaned that from scientific studies and text books. If I get the time I'll try to cite some for you.
Primarily what happens with excessive amino acids is that they are processed by the liver and are excreted as nitrogenous waste which becomes ammonia in the bedding.
A feed can be high in crude protein and still deficient is some essential amino acids. The excess of non-essential or unneeded essential amino acids ends up in the bedding. A vegetable based diet can be a problem unless non-essentials are kept as low as possible while providing more of the limiting amino acids in synthetic form.

Yes this is what I like to read too and I know I have seen it but can't for the life of me find it again.
Thank you.

 

[X_and_Z]

Here is some more information (emphasis mine):

"Most egg-type hens are given ad libitum access to feed; however, feeding programs may be modified after the maximum rate of egg mass output has been attained (Cerniglia et al., 1984; Cunningham, 1984). Laying hens eat more feed than is needed to support egg production. As a result, it may be more profitable to limit their feed intake. Doing so would also reduce the likelihood of health problems that can also result when hens are overly fat. Data on feed consumption in individual flocks, together with information on body weight, ambient temperature, and rate of egg production, may be used to determine the degree of feed restriction deemed appropriate."

https://www.nap.edu/read/2114/chapter/4#24

Other interesting info at that link (I have barely started to read it):

• Egg yolk size can be altered by a hen's fat intake
• Comments on protein requirements in relation to broilers refer to something that has been mentioned in this discussion about specific proteins being more important that total protein even though it is assumed that the needs for the specific proteins are met by providing a certain total protein

 

[Chris2018]

Ok lets say you have a commercial type (hatchery type) brown egg laying hen that is in her 32 to 44th week of laying, and lets say she needs a feed right around 17.50% protein with around 2725-2860 kcal/kg of energy.

Now lets say you let that hen free-range and you feed her lots of low calorie treats that lowers her caloric intake down but her protein intake stays right around 15 to 16 percent.
That hen will get fat because eating a bunch of treats and her caloric need isn't being reached.
Keep in mind that it takes longer for that hen to get her caloric need from protein than lets say fat.

 

[Akrnaf2]

Weight is primarily dictated by total calories regardless of whether those calories come from fat, protein or carbohydrates.

If chickens only ate the to fulfill the number of calories to keep them at proper weight they would never be fat (lots of other problems would still be on the table). So it seems that total calories + nutrient needs play into what dictates chickens will eat. If they are eating an imbalanced diet they continue to eat so that they exceed their caloric needs but meet nutritional requirements for fat/protein/carbohydrates/vitamins/minerals to some extent.

Not at all.
The whigt is mainly by accumulating FAT in the fat tissue. And that is by converting Extra CARBOHYDRATE to fatty acids and glycerol in the liver If a diet lakes carbohydrate and is high in protein and fats, some of the amino acids and the glycerol of the triglycerides is used to manufacture Glucose by Gluconeogenesis metabolic pathway and the fatty acids is use to produce ketons in the the Ketosis pathway both compaunds used by the brain and other organs, that depend only on glucose as the source for energy, other organs uses directly the fatty acids in Beta oxidation, so they DONT ACCUMULATE but if you eat carbohydrate withe fats and protein they Automatically became the main source for energy and the other will accumulate =gaining weight!
I know people that practice Paleo diet and they eat TREMENDOUS amount of fat and protein and they lost almost 15% of their whigt !