Productivity per hectare |
Production of live weights of animals marketed per hectare |
PH |
kg ha–1
|
= PT/A |
Offtake rate |
Quotient between quantity of marketed animals and animals in stock |
COR |
% |
= PT/(VQ*VM+N3Q*N3M+N2Q*N2M+N1Q*N1M+ B3Q*B3M+B2Q*B2M+B1Q*B1M+BQ*BM)*100 |
Stocking rate |
Quantity of animal units per hectare |
SR |
AU ha–1
|
1 |
Calving rate |
Relationship between weaned calves and mated cows |
CR |
% |
50 |
Age of heifer mating |
Mean age at which heifers are mated for the first time |
AM |
years |
3 |
Age of steer slaughter |
Average age at which steers are sold for slaughter |
AS |
years |
3 |
B.fat.kg |
Weight of slaughter of males |
Bfk |
kg |
= SE(AS=1;S1B1;SE(AS=2;S2B2;S3B3)) |
VD. fat (kg) |
Weight of slaughter of cull cow |
VDfk |
kg |
= SE(AM=1;S1SVD;SE(AM=2;S2SVD;S3VD)) |
Mortality (%) |
Mean herd mortality rate |
MO |
% |
3 |
Production (kg) |
Total production in kg of live weight |
PT |
kg |
= Bfh*Bfk+Nfh*Nfk+VDfh*VDfk+Tfh*Tfk |
Area (ha) |
Explored area |
A |
ha |
1000 |
Stock quantity (kg BW) |
Stock quantity of live weight (kg) |
SQ |
kg |
= VM*VQ+VDM*VDQ+N3M*N3Q+N2M*N2Q+ N1M*N1Q+B3M*B3Q+B2M*B2Q+B1M*B1Q+BM*BQ |
Bull (%) |
Percentage of bulls in the herd |
BU |
% |
3 |
D. Cow (%) |
Annual cow culling rate |
DC |
% |
= SE((100-CR)<CR/2;100-CR;15) |
D. Bull (%) |
Annual bull culling rate |
DB |
% |
25 |
S3.Slaughter.B3 |
Reference weight for a slaughter scenario of 3 year old steers |
S3B3 |
kg |
460 |
S2.Slaughter.B2 |
Reference weight for a slaughter scenario of 2 year old steers |
S2B2 |
kg |
420 |
S1.Slaughter.B1 |
Reference weight for a slaughter scenario of 1 year old steers |
S1B1 |
kg |
360 |
S3.Slaughter.VD |
Reference weight for a slaughter scenario of cull cow |
S3VD |
kg |
450 |
N.fat (kg) |
Weight of slaughter of heifers |
Nfk |
kg |
= SE(AM=1;N1S;SE(AM=2;N2S;N3S)) |
T.fat (kg) |
Weight of slaughter of bulls |
Tfk |
kg |
= BS |
VD.Slaughter.kg |
Slaughter weight of cull cows |
VDS |
kg |
= SE(AM=1;S1SVD;SE(H11=2;S2SVD;S3VD)) |
N3.Slaughter.kg |
Slaughter weight of 3 year old heifers |
N3S |
kg |
= SE(AM=3;S3SN3;0) |
N2.Slaughter.kg |
Slaughter weight of 2 year old heifers |
N2S |
kg |
= SE(AM=2;S2SN2;0) |
N1.Slaughter.kg |
Slaughter weight of 1year old heifers |
N1S |
kg |
= SE(AM=1;S1SN1;0) |
B3.Slaughter.kg |
Slaughter weight of 3 year old steers |
B3S |
kg |
= SE(AS=3;S3B3;0) |
B2.Slaughter.kg |
Slaughter weight of 2 year old steers |
B2S |
kg |
= SE(AS=2;S2B2;0) |
B1.Slaughter.kg |
Slaughter weight of 1 year old steers |
B1S |
kg |
= SE(AS=1;S1B1;0) |
Bull.Slaughter.kg |
Weight of slaughter of bulls |
BS |
kg |
800 |
V.Mean (kg) |
Average weight of cows |
VM |
kg |
= S3MV |
VD.Mean (kg) |
Average weight of cull cows |
VDM |
kg |
= SE(AM=1;S1MVD;SE(AM=2;S2MVD;S3mVD)) |
N3.Mean (kg) |
Average weight of 3 year old heifers |
N3M |
kg |
= SE(AM=3;S3MN3;0) |
N2.Mean (kg) |
Average weight of 2 years old heifers |
N2M |
kg |
= SE(AM=3;S3MN2;SE(AM=2;S2MN2;0)) |
N1.Mean (kg) |
Average weight of 1 year old heifers |
N1M |
kg |
= SE(AM=3;S3MN1;SE(AM=2;S2MN1;S1MN1)) |
B3.Mean (kg) |
Average weight of 3 year old steers |
B3M |
kg |
= SE(AS=3;S3MB3;0) |
B2.Mean (kg) |
Average weight of 2 year old steers |
B2M |
kg |
= SE(AS=2;S2MB2;SE(AS=3;S3MB2;0)) |
B1.Mean (kg) |
Average weight of 1 year old steers |
B1M |
kg |
= SE(AS=1;S1MB1;SE(AS=2;S2MB1;SE(AS=3;S3MB1;0))) |
Bull.Mean (kg) |
Average weight of bull |
BM |
kg |
650 |
V.Quantity (head) |
Quantity of cows - head |
VQ |
head |
= V/100*T |
VD.Quantity (head) |
Quantity of cull cows - head |
VDQ |
head |
= VD/100*T |
N3.Quantity (head) |
Quantity of 3 year old heifers - head |
N3Q |
head |
= N3/100*T |
N2.Quantity (head) |
Quantity of 2 year old heifers - head |
N2Q |
head |
= N2/100*T |
N1.Quantity (head) |
Quantity of 1year old heifers - head |
N1Q |
head |
= N1/100*T |
B3.Quantity (head) |
Quantity of 3 year old steers - head |
B3Q |
head |
= B3/100*T |
B2.Quantity (head) |
Quantity of 2 years old steers - head |
B2Q |
head |
= B2/100*T |
B1.Quantity (head) |
Quantity of 1 years old steers - head |
B1Q |
head |
= B1/100*T |
Bull.Quantity (head) |
Quantity of bull - head |
BQ |
head |
= BL/100*T |
Total (head) |
Total of animals |
T |
head |
= Cth/CTAU*SR*A |
V (AU = Animal Unit = 450 kg BW) |
Animal unit of a cow |
AU |
kg |
= POTENCY(VM/450;0,75) |
VD (AU) |
Animal unit of a cull cow |
VD |
- |
= POTENCY(VDM/450;0,75) |
N3 (AU) |
Animal unit of a 3 year old heifer |
N3 |
- |
= POTENCY (N3M/450;0,75) |
N2 (AU) |
Animal unit of a 2 year old heifer |
N2 |
- |
= POTENCY (N2M/450;0,75) |
N1 (AU) |
Animal unit of a 1 year old heifer |
N1 |
- |
= POTENCY (N1M/450;0,75) |
B3 (AU) |
Animal unit of a 3 year old steer |
B3 |
- |
= POTENCY (B3M/450;0,75) |
B2 (AU) |
Animal unit of a 2 year old steer |
B2 |
- |
= POTENCY (B2M/450;0,75) |
B1 (AU) |
Animal unit of a 1 year old steer |
B1 |
- |
= POTENCY (B1M/450;0,75) |
Bull (AU) |
Animal unit of a bull |
BA |
- |
= POTENCY (BM/450;0,75) |
V. % |
Percentage cows |
V |
% |
= CV/Cth*100 |
VD % |
Percentage cull cows |
VD |
% |
= CVD/Cth*100 |
N3.% |
Percentage steers 3 years |
N3 |
% |
= CN3/Cth*100 |
N2.% |
Percentage steers 2 years |
N2 |
% |
= CN2/Cth*100 |
N1.% |
Percentage steers 1 year |
N1 |
% |
= CN1/Cth*100 |
B3.% |
Percentage heifers 3 years |
B3 |
% |
= CB3/Cth*100 |
B2.% |
Percentage heifers 2 years |
B2 |
% |
= CB2/Cth*100 |
B1.% |
Percentage heifers 1 year |
B1 |
% |
= CB1/Cth*100 |
Bull.% |
Percentage bull |
BL |
% |
= CB/Cth*100 |
B.fat (head) |
Number of steers slaughtered |
Bfh |
head |
= SE(E(B3Q=0;B2Q=0);B1Q;SE(B3Q=0;B2Q;B3Q)) |
N. fat (head) |
Number of heifers slaughtered |
Nfh |
head |
= SE(E(N3Q=0;N2Q=0);(N1Q-VDfh);SE(N3Q=0;(N2Q-VDfh);(N3Q-VDfh))) |
VD. fat (head) |
Number of cull cow slaughtered |
VDfh |
head |
=VQ*DC/100 |
T. fat (head) |
Number of bulls slaughtered |
Tfh |
head |
= BQ*DB/100 |
B.fat % |
Percentage of slaughter of steers |
Bf |
% |
= Bfh/(Bfh+Nfh+VDfh+Tfh) |
N. fat % |
Percentage of slaughter of heifers |
Nf |
% |
= Nfh/(Bfh+Nfh+VDfh+Tfh) |
VD. Fat % |
Percentage of slaughter of cull cow |
VDf |
% |
= VDfh/(Bfh+Nfh+VDfh+Tfh) |
T. fat % |
Percentage of slaughter of bulls |
Tf |
% |
= Tfh/(Bfh+Nfh+VDfh+Tfh) |
Coefficient. V |
Relative coefficient of cows in the herd |
CV |
- |
1 |
Coefficient.VD |
Relative coefficient of cull cows in the herd |
CVD |
- |
= DC/100 |
Coefficient. N3 |
Relative coefficient of 3 years old heifers in the herd |
CN3 |
- |
= SE(AM=3;CN2*(1-MO/100);0) |
Coefficient. N2 |
Relative coefficient of 2 years old heifers in the herd |
CN2 |
- |
= SE(AM=1;0;CN1*(1-MO/100)) |
Coefficient. N1 |
Relative coefficient of 1 year old heifers in the herd |
CN1 |
- |
= ((CR/100)/2*(1-MO/100))*CV |
Coefficient. B3 |
Relative coefficient of 3 year old steers in the herd |
CB3 |
- |
= SE(AS=3;CB2*(1-MO/100);0) |
Coefficient. B2 |
Relative coefficient of 2 year old steers in the herd |
CB2 |
- |
= SE(AS=1;0;CB1*(1-MO/100)) |
Coefficient. B1 |
Relative coefficient of 1 year old steers in the herd |
CB1 |
- |
= ((CR/100)/2*(1-MO/100))*CV |
Coefficient. Bull |
Relative coefficient of bulls in the herd |
CB |
- |
= BU/100*CV |
Coefficient. T.head |
Sum of the coefficients of the number of heads |
Cth |
- |
= CV+CVD+CN3+CN2+CN1+CB3+CB2+CB1+CB |
Coefficient. T. AU |
Sum of the coefficients of animal unity |
CTAU |
- |
= CV*AU+CN3*N3+CN2*N2+CN1*N1+CB3*B3+CB2*B2+CB1*B1+CB*B |
S3.Mean.V |
System 3 years - Mean of cow |
S3MV |
kg |
= S3VD*S3CcVD |
S3.mean.VD |
System 3 years - Mean of cull cow |
S3mVD |
kg |
= S3VD-S3ACk |
S3.mean.N3 |
System 3 years - Mean of heifers (3 years old) |
S3MN3 |
kg |
= S3NCa*S3MV |
S3.Mean.N2 |
System 3 years - Mean of heifers (2 years old) |
S3MN2 |
kg |
= S3MN1+365*S3AGDrf |
S3.Mean.N1 |
System 3 years - Mean of heifers (1 years old) |
S3MN1 |
kg |
= S3W+180*S3AGDrf |
S3.Weaning.tf |
System 3 years - Weaning weight of females |
S3W |
kg |
110 |
S3.Slaughter.N3 |
System 3 years - Slaughter of steers 3 years old |
S3SN3 |
kg |
= S3MN3+S3AHk |
S3.AGD rearing.f |
System 3 years - Average daily gain in the rearing of females |
S3AGDrf |
kg |
= (S3MN3-S3W)/(3*365-180) |
S3.Adic.Cow.kg |
Cow weight gain in 12 months in a 3 year slaughter scenario |
S3ACk |
kg |
100 |
S3.Adic.Heifers.kg |
Heifer weight gain in 12 months in a 3 year slaughter scenario |
S3AHk |
kg |
90 |
S3.Cow-calf/VD |
Weight ratio between cows-calf and discard cows in a 3 year slaughter system |
S3CcVD |
kg |
1 |
S3.Nov. /Cow adult |
System 3 years - Heifers/cow adult |
S3NCa |
- |
0.65 |
S2.Mean.V |
System 2 years - Mean of cow |
S2MV |
kg |
= S2SVD*S2CcVD |
S2.mean.VD |
System 2 years - Mean of cull cow |
S2MVD |
kg |
= S2SVD-S2ACk |
S2.Mean.N2 |
System 2 years - Mean of heifers (2 years old) |
S2MN2 |
kg |
= S2MV*S2NCa |
S2.Mean.N1 |
System 2 years - Mean of heifers (1 years old) |
S2MN1 |
kg |
= S2W+180*S2AGDrf |
S2.Weaning.tf |
System 2 years - Weaning weight of females |
S2W |
kg |
130 |
S2.Slaughter.VD |
System 2 years - Slaughter of cull cow |
S2SVD |
kg |
= S3VD |
S2.Slaughter.N2 |
System 2 years - Slaughter of steers 2 years old |
S2SN2 |
kg |
= S2MN2+S2AHk |
S2.AGD.rearing.f |
System 2 years - Average daily gain in the rearing of females |
S2AGDrf |
kg |
= (S2MN2-S2W)/(2*365-180) |
S2.Adic.Cow.kg |
Cow weight gain in 12 months in a 2 year slaughter scenario |
S2ACk |
kg |
100 |
S2.Adic.Heifers.kg |
Heifer weight gain in 12 months in a 2 year slaughter scenario |
S2AHk |
kg |
90 |
S2.Cow-calf/VD |
Weight ratio between cows-calf and discard cows in a 2 year slaughter system |
S2CcVD |
- |
1 |
S2.Nov. / Cow adult |
System 2 years - Cow-calf/cull cow |
S2NCa |
- |
0.65 |
S1.Mean.V |
System 1 year - Mean of cow |
S1MV |
kg |
= S1SVD*S1CcVD |
S1.Mean.VD |
System 1 year - Mean of cull cow |
S1MVD |
kg |
= S1SVD*S1ACk |
S1.Mean.N1 |
System 1 year - Mean of heifers (1 years old) |
S1MN1 |
kg |
= S1MV*S1NCa |
S1.Weaning.tf |
System 1 year - Weaning weight of females |
S1Wtf |
kg |
90 |
S1.Slaughter.VD |
System 1 year - Slaughter of cull cow |
S1SVD |
kg |
= S3VD |
S1.Slaughter.N1 |
System 1 year - Slaughter of steers 1 years old |
S1SN1 |
kg |
= S1MN1+S1AHk |
S1.AGD rearing.f |
System 1 year - Average daily gain in the rearing of females |
S1AGDrf |
kg |
= (S1MN1-S1Wtf)/(365-180) |
S1.Adic.Cows.kg |
Cow weight gain in 12 months in a 1 year slaughter scenario |
S1ACk |
kg |
100 |
S1.Adic.Heifers.kg |
Heifer weight gain in 12 months in a 1 year slaughter scenario |
S1AHk |
kg |
90 |
S1.Cow-calf/ VD |
Weight ratio between cows-calf and discard cows in a 1 year slaughter system |
S1CcVD |
- |
1 |
S1.Nov. / Cow adult |
System 1 years - Heifers/cow adult |
S1NCa |
- |
1 |
S3.Mean.B3 |
System 3 years - Mean of 3 year old steers |
S3MB3 |
kg |
= S3B3-S3td*S3AGDfm |
S3.Mean.B2 |
System 3 years - Mean of 2 year old steers |
S3MB2 |
kg |
= S3MB3-365*S3AGDrm |
S3.Mean.B1 |
System 3 years - Mean of 1 year old steers |
S3MB1 |
kg |
= S3MB2-365*S3AGDrm |
S3.Weaning.tm |
System 3 years - Weaning weight of males |
S3Wm |
kg |
158 |
S3.AGD rearing.m |
System 3 years - Average daily gain in the rearing of males |
S3AGDrm |
kg |
= (S3MB3-S3Wm)/(3*365-180) |
S3.AGD fattening.m |
System 3 years - Average daily gain in the fattening of males |
S3AGDfm |
kg |
1 |
S3.time.days |
Days for finishing in a 3 year slaughter system |
S3td |
days |
100 |
S2.Mean.B2 |
System 2 years - Mean of 2 year old steers |
S2MB2 |
kg |
= S2B2-S2AGDfm*S2td |
S2.Mean.B1 |
System 2 years - Mean of 1 year old steers |
S2MB1 |
kg |
= S2MB2-365*S2AGDrm |
S2.Weaning.tm |
System 2 years - Weaning weight of males |
S2Wm |
kg |
177 |
S2.AGD rearing .m |
System 2 years - Average daily gain in the rearing of males |
S2AGDrm |
kg |
= (S2MB2-S2Wm)/(2*365-180) |
S2.AGD fattening.m |
System 2 years - Average daily gain in the fattening of males |
S2AGDfm |
kg |
1 |
S2.time.days |
Days for finishing in a 2 year slaughter system |
S2td |
days |
100 |
S1.Mean.B1 |
System 1 year - Mean of 1 year old steers |
S1MB1 |
kg |
= S1B1-S1AGDfm*S1td |
S1.Weaning.tm |
System 1 year - Weaning weight of males |
S1Wm |
kg |
200 |
S1.AGD rearing.m |
System 1 year - Average daily gain in the rearing of males |
S1AGDrm |
kg |
= (S1MB1-S1Wm)/(365-180) |
S1.AGD fattening.m |
System 1 year - Average daily gain in the fattening of males |
S1AGDfm |
kg |
1 |
S1.time.days |
Days for finishing in a 1 year slaughter system |
S1td |
days |
100 |