Chemical composition and biological value of spray dried porcine blood by-products and bone protein hydrolysate for young chickens

• Published in: British poultry science Vol. 52; no. 5; pp. 589 - 605
• Main Authors: Jamroz, D, Wiliczkiewicz, A, Orda, J, Skorupińska, J, Słupczyńska, M, Kuryszko, J
• Format: Journal Article
• Language: English
• Published: England Longman 01.10.2011; Taylor & Francis Group; Taylor & Francis
• Subjects: amino acids; Amino Acids - chemistry; Amino Acids - metabolism; Animal biology; Animal Feed; Animals; blood cells; Blood Cells - chemistry; Blood Chemical Analysis - veterinary; blood plasma; Blood Proteins - administration & dosage; Blood Proteins - chemistry; Blood Proteins - metabolism; Body Weight; Bone and Bones - chemistry; byproducts; calcium; chickens; Chickens - growth & development; Chickens - metabolism; copper; crude protein; Diet - veterinary; Dietary Supplements; digestibility; feed intake; femur; fish meal; hemoglobin; immunoglobulin G; Jejunum - ultrastructure; Life Sciences; Male; mineral content; Poland; protein hydrolysates; Protein Hydrolysates - administration & dosage; Protein Hydrolysates - chemistry; Protein Hydrolysates - metabolism; Random Allocation; Sus scrofa - blood; swine; tibia; Poland; Life Sciences
• ISSN: 0007-1668; 1466-1799; 1466-1799
• DOI: 10.1080/00071668.2011.610298

1. The chemical composition of spray dried porcine blood by-products is characterised by wide variation in crude protein contents. In spray dried porcine blood plasma (SDBP) it varied between 670-780 g/kg, in spray dried blood cells (SDBC) between 830-930 g/kg, and in bone protein hydrolysate (BPH) in a range of 740-780 g/kg. Compared with fish meal, these feeds are poor in Met and Lys. Moreover, in BPH deep deficits of Met, Cys, Thr and other amino acids were found. 2. The experiment comprised 7 dietary treatments: SDBP, SDBC, and BPH, each at an inclusion rate of 20 or 40 g/kg diet, plus a control. The addition of 20 or 40 g/kg of the analysed meals into feeds for very young chickens (1-28 d post hatch) significantly decreased the body weight (BW) of birds. Only the treatments with 40 g/kg of SDBP and SDBC showed no significant difference in BW as compared with the control. There were no significant differences between treatments and type of meal for feed intake, haematocrit and haemoglobin concentrations in blood. 3. Addition of bone protein and blood cell meals to feed decreased the IgG concentration in blood and caused shortening of the femur and tibia bones. However, changes in the mineral composition of bones were not significantly affected by the type of meal used. 4. The blood by-products, which are rich in microelements, improved retention of Ca and Cu only. In comparison to control chickens, significantly better accretion of these minerals was found in treatments containing 20 g/kg of SDBP or 40 g/kg of SDBC. 5. Great variability in apparent ileal amino acid digestibility in chickens was determined. In this respect, some significant differences related to the type of meal fed were confirmed for Asp, Pro, Val, Tyr and His. In general, the apparent ileal digestibility of amino acids was about 2-3 percentage units better in chickens fed on diets containing the animal by products than in control birds.