Spray dried blood cells

Comparative amino acid digestibility in US blood products fed to weanling pigs

Almeida, F. N., J. K. Htoo, J. Thomson, and H. H. Stein. 2013. Comparative amino acid digestibility in US blood products fed to weanling pigs. Anim. Feed Sci. Technol. 181:80-86. Link to full text (.pdf)

Amino acid digestibility in blood products fed to weanling pigs

Almeida, F. N., J. K. Htoo, J. Thomson, and H. H. Stein. 2012. Amino acid digestibility in blood products fed to weanling pigs. J. Anim. Sci. 90(E-Suppl. 3):468-469 (Abstr.) Link to abstract (.pdf)

Publication Type: 

Comparative amino acid digestibility in blood products fed to weanling pigs

The U.S. slaughter industry produces blood co-products that may be used in diets for nursery pigs because of the high concentration and quality of protein they contain. The quality of protein in blood products can differ based on the processing techniques used.  In particular, products which are heated to too high a temperature during processing can sustain heat damage to amino acids due to the Maillard reaction. Lysine is particularly susceptible to heat damage.

An experiment was performed to determine the comparative amino acid digestibility in five different blood products fed to weanling pigs. Three are spray-dried products, which are dried quickly at temperatures of up to 225˚C. Spray-dried animal blood (SDAB) is manufactured from whole blood containing an anticoagulant. Spray-dried plasma protein (SDPP) is manufactured from blood which has had the plasma separated out by centrifugation. Spray-dried blood cells (SDBC) are the red blood cells left after plasma separation. In addition to the spray-dried products, two sources of blood meal were tested – one from an avian source (avian blood meal, or ABM) and one from a porcine source (porcine blood meal, or PBM). These blood meals were dried using drum driers instead of spraydriers.

Publication Type: 

Standardized total tract digestibility of phosphorus in blood products fed to weanling pigs

Blood meal and spray dried plasma protein are often included in diets fed to weanling pigs, and blood products are considered excellent sources of protein. The objective of this research was to measure apparent total tract digestibility (ATTD) and standardized total tract digestibililty (STTD) of phosphorus in spray dried animal plasma, porcine blood meal, and avian blood meal fed to weanling pigs. References such as the NRC typically provide relative bioavailability values for phosphorus rather than digestibility values. Relative bioavailability values, however, depend on the standard (e.g., monosodium phosphate or dicalcium phosphate) to which the availability is compared. Thus, these values are believed not to be additive in mixed diets. It is believed that STTD values are additive in mixed diets, and therefore will enable producers to formulate diets that accurately meet the phosphorus requirement of pigs without creating unneccesary excesses that are excreted in the manure.

Authors: 
Publication Type: 

Amino acid digestibility in blood meal fed to weanling pigs

Dried blood meal is commonly used as a high-quality protein source in nursery pig diets. Growth studies have indicated that blood meal can be a better protein source than dried skim milk, fish meal, and soy protein concentrate.  However, the growth effects of blood meal vary across studies; this may be due to differences in protein quality.

Limited data exist on digestibility of crude protein and amino acids in blood meal produced from different species and with different drying methods.  Therefore, an experiment was conducted to measure apparent (AID) and standardized (SID) ileal digestibility of crude protein and amino acids in two sources of blood meal.

Authors: 
Publication Type: 

Nucleotide deficiencies in starter diets for weanling pigs

Mateo, C. D. and H. H. Stein. 2004. Page 55 in Nutritional Biotechnology in the Feed Industry. Proc. Alltech's 20th Annual Symp., Lexington, KY, USA, May 23-26, 2004, Suppl. 1 (Abstr.) Link to abstract (.pdf)

Authors: 
Publication Type: 

The effects of adding spray dried plasma protein and spray dried blood cells to starter diets for pigs

Stein, H. H., 1996. The effects of adding spray dried plasma protein and spray dried blood cells to starter diets for pigs. In: Proc. Anais do Simposio Latino- Americano de Nutricao de Suinos e Aves, May 7-8, Campinas, Brazil.  Link to full text (.pdf)

Authors: 
Publication Type: