Availability of lysine in meat meal, meat and bone meal and blood meal as determined by the slope-ratio assay with growing pigs, rats and chicks and by chemical techniques

• Published in: British journal of nutrition 1986-03, Vol.55 (2), p.427-440
• Main Authors: Batterham, E. S., Lowe, R. F., Darnell, R. E., Major, E. J.
• Format: Article
• Language: English
• Subjects: Animal Feed; Animals; bioassays; Biological and medical sciences; Biological Availability; Blood; blood meal; Bone and Bones - analysis; Chickens - growth & development; Chickens - metabolism; chicks; Feeding. Feeding behavior; Female; Fundamental and applied biological sciences. Psychology; in vitro; Lysine - analysis; Lysine - pharmacokinetics; lysine availability; Male; measurement; Meat - analysis; meat and bone meal; meat meal; Methods; Papers on General Nutrition; rats; Rats - growth & development; Rats - metabolism; swine; Swine - growth & development; Swine - metabolism; Vertebrates: anatomy and physiology, studies on body, several organs or systems
• ISSN: 0007-1145; 1475-2662
• DOI: 10.1079/BJN19860049

1. The availability of lysine in four meat meals (MMs), four meat and bone meals (MBMs) and two blood meals was determined using the slope-ratio assay with growing pigs, rats and chicks and with two chemical techniques. 2. The availability of lysine (proportion of total) in the eight MMs or MBMs ranged from 0.48 to 0.88 for pigs, from 0.49 to 0.88 for rats and from 0.68 to 0.88 for chicks. There was no apparent relation between the availability estimates for pigs, rats and chicks for the individual meals. 3. For the two blood meals, availability estimates were 1.03 and 1.13 for pigs, 0.81 and 0.80 for rats and 1.07 and 1.02 for chicks. 4. Values for the indirect and direct 1-fluoro-2, 4-dinitrobenzene-‘available’-lysineassays ranged from 0.77 to 0.88 and 0.78 to 0.93 respectively for the eight MMs and MBMs. There appeared to be no relation between these values and the pig estimates.