Absorption
amino acids 6, 18–20, 51–54
carbohydrates 134
copper 173, 175
fatty acids 98–99
glucose
paracellular 127, 128, 130
transcellular 127, 128, 130
iron 177
manganese 176
mechanisms
channel proteins 5, 6, 7
diffusion 6, 18
facilitative 5, 18
mediated 4–7, 18
transporter energetics 4, 5
transporter theory 3–7, 18
selenium 178
volatile fatty acids (VFA) 139–142
zinc 164, 165, 167, 171, 172
Acacia pendula 392
Acetate 133, 135, 136, 138, 144, 153, 154, 155
cycling 154
Acetogenesis 142, 143
Acid(s) 126, 143
weak 153, 158
Acid detergent fibre (ADF) 200, 201, 203, 204, 217,
221, 256, 268
Acremonium coenophialum387, 388
Acremonium lolii387, 388
Acrylate pathway 136, 138
Actin 76
Activity
feeding
crepuscular 366
Acute toxicity 389–391
Additives
for cows 378–379
enzymes 405–421
polyethylene glycol (PEG) 227, 262, 399
Adipose tissue 74–75, 83–84, 104–106, 108–109, 326
brown 84
lipid
mobilization 108–109
synthesis 104–106
white 84
Administration of marker
aqueous suspension 262
continuous dosing 264
controlled-release devices 258–259
gelatin capsules 262
marker-impregnated bungs 262, 266
pulse dosing 264–266
Advisory directives 400–401
anti-nutritional factors 400–401
mycotoxins 400–401
Aflatoxin
B 1 387, 389, 391, 396, 399, 401
B 2387
contamination 387
G 1387
G 2387
M 1 387, 389, 391, 401
Agglutination 384
Aggression 375
Aglycone 386
D-Alanine 258, 266
Alkaloids 227, 383, 384, 385, 387, 388
endophyte 388, 401
ergopeptine 387, 391, 397
lolitrem 387, 388, 391
lupins 385
quinolizidine 383, 384, 385, 390, 400
n-Alkanes
even-chain 262, 266, 268, 269
odd-chain 257, 266, 268, 269, 270
profiles in forage species 258, 271
Allantoin 258, 267
Amiloride 153
Amino acid(s) 3–20, 30–32, 49–59, 156, 279–302, 386,
388, 392, 393, 395, 398, 400
absorption 7, 51–54
deamination 356
dietary 280
effects on ileal digestibility values 286–289
distribution in blood 49–50
fermenting bacteria 358
flux across
liver 54–56
muscle 57
glycine 28–30
hepatic fractional extraction 55
ileal digestibility 279–302
indispensable 335
leucine 30–32
metabolism
leucine 30–31
liver 54–56
modelling 58
metabolizable 340–341
precursors 352, 356
and protein synthesis 58
ruminal efflux 338
supply to mammary gland 56–57Index
427