MDS Implementation Guidelines

MDS Implementation Guidelines
Factor Tables

Factor A (Odour Potential) and Factor D (Manure or Material Form in Storage Facility)
Factor B (Nutrient Units Factor)
Factor C (Orderly Expansion Factor)
Factor E (Encroaching Land Use Factor)
Permanent Manure or Material Storage Types
MDS I/II Separation Distances for Permanent Manure or Material Storage Types in Table 5

Table 1. Factor A (Odour Potential) and Factor D (Manure or Material Form in Storage Facility)

Animal Type or Material	Description	Number per NU	Factor A	Manure or Material Form in Permanent Storage
Animal Type or Material	Description	Number per NU	Factor A	Liquid Manure: Factor D = 0.8 Less than 18% Dry Matter	Solid Manure: Factor D = 0.7 18 to 100% Dry Matter
Swine	Sows with litter, dry sows/boars Segregated Early Weaning (SEW)	3.33	1.0	Most systems have liquid manure stored under the barn slats for short or long periods, or in storages located outside	Systems with solid manure inside on deep bedded packs, or with scraped alleys
	Sows with litter, dry sows or boars (non-SEW)	3.5	1.0	Most systems have liquid manure stored under the barn slats for short or long periods, or in storages located outside	Systems with solid manure inside on deep bedded packs, or with scraped alleys
	Breeder gilts (entire barn designed specifically for this purpose)	5	1.0	Most systems have liquid manure stored under the barn slats for short or long periods, or in storages located outside	Systems with solid manure inside on deep bedded packs, or with scraped alleys
	Weaners (7 kg - 27 kg)	20	1.1	Most systems have liquid manure stored under the barn slats for short or long periods, or in storages located outside	Systems with solid manure inside on deep bedded packs, or with scraped alleys
	Feeders (27 kg - 105 kg)	6	1.2	Most systems have liquid manure stored under the barn slats for short or long periods, or in storages located outside	Systems with solid manure inside on deep bedded packs, or with scraped alleys
Dairy Cattle¹	Milking-age cows (dry or milking) Large-framed 545 kg - 636 kg (e.g. Holsteins)	0.7	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Milking-age cows (dry or milking) Medium-framed 455 kg - 545 kg (e.g. Guernseys)	0.85	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Milking-age cows (dry or milking) Small-framed 364 kg - 455 kg (e.g. Jerseys)	1	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Heifers (5 months to freshening) Large-framed 182 kg - 545 kg (e.g. Holsteins)	2	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Heifers (5 months to freshening) Medium-framed 148 kg - 455 kg (e.g. Guernseys)	2.4	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Heifers (5 months to freshening) Small-framed 125 kg - 364 kg (e.g. Jerseys)	2.9	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Tie-stall barns with lots of bedding, or loose housing with deep bedded pack, and with or without outside yard access
	Calves (0 - 5 months) Large-framed 45 kg - 182 kg (e.g. Holsteins	6	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Bedded pens or stalls or heavily bedded calf hutches that are outside
	Calves (0 - 5 months) Medium-framed 39 kg - 148 kg (e.g. Guernseys)	7	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Bedded pens or stalls or heavily bedded calf hutches that are outside
	Calves (0 - 5 months) Small-framed 30 kg - 125 kg (e.g. Jerseys)	8.5	0.7	Free-stall barns with minimal bedding, or sand bedding, or tie-stall barns with minimal bedding and milking centre washwater added	Bedded pens or stalls or heavily bedded calf hutches that are outside
Beef Cattle	Cows, including calves to weaning (all breeds)	1	0.7	N/A	Bedded pack barns with or without outside yard access
	Feeders (7 - 16 months)	3	0.8	Slatted floor systems, or barns with minimal bedding and yard scraped to a liquid storage	Bedded pack barns with or without outside yard access
	Backgrounders (7 - 12.5 months)	3	0.8	Slatted floor systems, or barns with minimal bedding and yard scraped to a liquid storage	Bedded pack barns with or without outside yard access
	Shortkeepers (12.5 - 17.5 months)	2	0.8	Slatted floor systems, or barns with minimal bedding and yard scraped to a liquid storage	Bedded pack barns with or without outside yard access
Veal	Milk-fed	6	1.1	Slatted floors or slatted stall system	Heavily bedded pack barns
Veal	Grain-fed	6	0.8	Slatted floors or slatted stall system	Heavily bedded pack barns
Goats	Does and bucks (for meat kids; includes unweaned offspring and replacements	8	0.7	N/A	Heavily bedded pack barns
	Does and bucks (for dairy; includes unweaned offspring and replacements)	8	0.7	N/A	Heavily bedded pack barns
	Kids (dairy or feeder kids)	20	0.7	N/A	Heavily bedded pack barns
Sheep	Ewes and rams (for meat lambs; includes unweaned offspring and replacements)	8	0.7	N/A	All sheep systems
	Ewes and rams (dairy operation; includes unweaned offspring and replacements)	6	0.7	N/A	All sheep systems
	Lambs (dairy or feeder lambs)	20	0.7	N/A	All sheep systems
Horses	Large-framed, mature; > 681 kg (including unweaned offspring)	0.7	0.7	N/A	All horse systems
	Medium-framed, mature; 227 kg -680 kg (including unweaned offspring)	1	0.7	N/A	All horse systems
	Small-framed, mature; < 227 kg (including unweaned offspring)	2	0.7	N/A	All horse systems
Chickens	Layer hens (for eating eggs; after transfer from pullet barn)	150	1.0	Birds in cages, manure belts, no drying of manure, water added	Birds in cages, manure belts and drying, or floor systems
	Layer pullets (day olds until transferred into layer barn)	500	0.7	Birds in cages, manure belts, no drying of manure, water added	Birds in cages, manure belts and drying, or floor systems
	Broiler breeder growers (males/females transferred out to layer barn)	300	0.7	N/A	Bedded floors
	Broiler breeder layers (males/females transferred in from grower barn)	100	0.7	N/A	Cage or slatted floor systems
	Broilers on an 8 week cycle	350	0.7	N/A	Bedded floors
	Broilers on a 9 week cycle	300	0.7	N/A	Bedded floors
	Broilers on a 10 week cycle	250	0.7	N/A	Bedded floors
	Broilers on a 12 week cycle	200	0.7	N/A	Bedded floors
	Broilers on any other cycle, or if unknown, use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floors
Turkeys	Turkey pullets (day old until transferred to layer turkey barn)	267	0.7	N/A	Bedded floor systems
	Turkey breeder layers (males/females transferred in from grower barn)	67	0.7	N/A	Bedded floor systems
	Breeder toms	45	0.7	N/A	Bedded floor systems
	Broilers (day olds to 6.2 kg)	133	0.7	N/A	Bedded floor systems
	Hens (day olds up to 6.2 kg to 10.8 kg; 7.5 kg is typical)	105	0.7	N/A	Bedded floor systems
	Toms (day olds to over 10.8 to 20 kg; 14.5 kg is typical)	75	0.7	N/A	Bedded floor systems
	Turkeys at any other weights, or if unknown, use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floor systems
Quail	Use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floor systems
Partridge	Use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floor systems
Pheasants	Use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floor systems
Squab	Use 24.8 m²/NU	24.8 m²	0.7	N/A	Bedded floor systems
Rheas	Adults (includes replacements and market birds)	13	0.7	N/A	Bedded floor systems
Emus	Adults (includes replacements and market birds)	12	0.7	N/A	Bedded floor systems
Ostriches	Adults (includes replacements and market birds)	4	0.7	N/A	Bedded floor systems
Ducks	Peking	105	0.8	Wire mesh flooring systems	Bedded floor systems
Ducks	Muscovy, use 24.8 m²/NU	24.8 m²	0.8	Wire mesh flooring systems	Bedded floor systems
Geese	Use 24.8 m²/NU	24.8 m²	0.8	Wire mesh flooring systems	Bedded floor systems
Rabbits	Breeding females (including males, replacements and market animals)	40	0.8	N/A	Cage or floor systems
Chinchillas	Breeding females (including males, replacements and market animals)	320	0.8	N/A	Cage or floor systems
Fox	Breeding females (including males, replacements and market animals)	25	1.0	N/A	Cage or floor systems
Mink	Breeding females (including males, replacements and market animals)	90	1.0	N/A	Cage or floor systems
Bison	Adults (includes unweaned calves and replacements	1.3	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Bison	Feeders (170 kg - 477 kg)	4	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Llama	Adults (includes unweaned young and replacements)	5	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Llama	Feeders (45 kg - 86 kg)	16	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Alpaca	Adults (includes unweaned young and replacements)	8	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Alpaca	Feeders (23 kg - 48 kg)	26	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Wild Boar	Breeding age sows (includes boars, replacements and weaned piglets to 27 kg)	5	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Wild Boar	Finishing boars (27 kg - 86 kg)	7	0.7	N/A	Bedded pack barns with outside access or outside confinement areas
Deer	White tailed deer Adults > 24 mo (including unweaned offspring)	11	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	White tailed deer Feeders	21	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Red Deer Adults > 24 MO (including unweaned offspring)	7	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Red Deer Feeders	14	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Elk Adults > 24 MO (including unweaned offspring)	2	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Elk Feeders	6	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Elk/deer hybrids Adults > 24 MO (including unweaned offspring)	4	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Elk/deer hybrids Feeders	10	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Fallow deer Adults > 24 MO (including unweaned offspring)	13	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
	Fallow deer Feeders	23	0.7	N/A	Bedded pack barns with outside access or outside confinement areas.
Other livestock not listed in this table	To determine the number per NU, add up the total maximum live weight of animals and divide by the weight of animals per NU in the next column.	453.6 kg (1000 lbs)	0.8	All storages with liquid manure.	All storages with solid manure.
Manure imported to a lot not generating manure²	Maximum capacity of permanent storages at any time: solid or liquid capacity.	19.8 m³ (700 ft³)	1.2	All storages with liquid manure.	All storages with solid manure.
Storages for digestate from an Anaerobic Digester (odours reduced during this process)	Maximum capacity of permanent storages at any time: solid or liquid capacity.	19.8 m³ (700 ft³)	0.5	All storages with liquid manure.	All storages with solid manure.

1. On farms with 100 milk-age cows (dry and milking), there are usually about 20 replacement calves and 80 replacement heifers.

2. Average value for typical types of manure that might be imported to a lot, such as poultry, dairy, beef, swine, horse or other manure.

N/A = Not Applicable

Table 2. Factor B (Nutrient Units Factor)

In using Table 2 to determine Factor B, it may be necessary to interpolate a value for Factor B. For example, you determine the total number of nutrient units at a livestock facility to be 255 NU. Table 2 provides a value for Factor B for 250 NU and for 260 NU, but not for 255 NU. The value of Factor B for 250 NU is 435 and the value of Factor B for 260 NU is 441. To determine Factor B for 255 NU interpolate between the numbers 435 and 441. In this example, the value of Factor B for 255 NU is 438.

When interpolating a value for Factor B do not include more than two decimal places. Interpolated values with more than two decimal places should be rounded accordingly. For example, if an interpolated value for Factor B is calculated as 499.238, then use a value of 499.24 for Factor B in the MDS calculation.

For operations less than 5 NU in size, do not interpolate, but use a Factor B of 150. For operations greater than 5000 NU in size, contact OMAFRA staff to determine Factor B.

Final NU	Factor B
Up to 5	150
6	153
7	157
8	160
9	163
10	167
11	170
12	173
13	177
14	180
15	183
16	187
17	190
18	193
19	197
20	200
21	202
22	204
23	206
24	208
25	210
26	212
27	214
28	216
29	218
30	220
31	222
32	224
33	226
34	228
35	230
36	232
37	234
38	236
39	238
40	240
41	242
42	244
43	246
44	248
45	250
46	252
47	254
48	256
49	258
50	260
52	264
54	268
56	272
58	276
60	280
62	282
64	284
66	285
68	287
70	289
72	291
74	293
76	294
78	296
80	298
82	300
84	301
86	303
88	305
90	307
92	309
94	310
96	312
98	314
100	316
102	318
104	320
106	322
108	324
110	326
112	329
114	331
116	333
118	335
120	337
122	339
124	340
126	342
128	344
130	346
135	351
140	355
145	360
150	364
155	368
160	372
165	376
170	380
175	384
180	388
185	392
190	395
195	399
200	402
205	406
210	409
215	413
220	416
225	419
230	423
235	426
240	429
245	432
250	435
260	441
270	447
280	453
290	458
300	464
310	469
320	474
330	480
340	485
350	490
360	494
370	499
380	504
390	508
400	513
410	517
420	522
430	526
440	530
450	535
460	539
470	543
480	547
490	551
500	555
520	562
540	570
560	577
580	584
600	591
620	598
640	605
660	611
680	618
700	624
750	639
800	654
850	668
900	681
950	694
1000	707
1100	731
1200	753
1300	775
1400	795
1500	815
2000	870
3000	980
4000	1090
5000	1200
Greater than 5000	Contact OMAFRA staff

Table 3. Factor C (Orderly Expansion Factor)

In using Table 3 to determine Factor C, it may be necessary to interpolate a value for Factor C. For example, you determine the percentage increase at a livestock facility to be 155%. Table 3 provides a value for Factor C for a 150% increase, and for a 160% increase, but not for a 155% increase. The value of Factor C for a 150% increase is 0.9371 and the value of Factor C for a 160% increase is 0.9497. To determine Factor C for a 155% increase interpolate between the numbers 0.9371 and 0.9497. In this example, the value of Factor C for a 155% increase is 0.9434.

When interpolating a value for Factor C do not include more than four decimal places. Interpolated values with more than four decimal places should be rounded accordingly. For example, if an interpolated value for Factor C is calculated as 0.977643, then use a value of 0.9776 for Factor C in the MDS calculation.

For operations with a 0% increase, or a decrease, i.e. 'negative' percentage increase, use a value of 0.5000 for Factor C. Do not interpolate below a value of 0.5000. For operations with a 700% increase or greater, or for a first livestock facility, use a value of 1.1400 for Factor C. Do not interpolate above a value of 1.1400.

% Increase in Nutrient Units	Factor C
0% increase, or decreases ('negative' increase)	0.5000
1%	0.5062
2%	0.5124
3%	0.5186
4%	0.5248
5%	0.5310
6%	0.5372
7%	0.5434
8%	0.5496
9%	0.5558
10%	0.5620
11%	0.5682
12%	0.5744
13%	0.5806
14%	0.5868
15%	0.5930
16%	0.5992
17%	0.6054
18%	0.6116
19%	0.6178
20%	0.6240
21%	0.6302
22%	0.6364
23%	0.6426
24%	0.6488
25%	0.6550
26%	0.6612
27%	0.6674
28%	0.6736
29%	0.6798
30%	0.6860
31%	0.6922
32%	0.6984
33%	0.7046
34%	0.7108
35%	0.7170
36%	0.7232
37%	0.7294
38%	0.7356
39%	0.7418
40%	0.7480
41%	0.7542
42%	0.7604
43%	0.7666
44%	0.7728
45%	0.7790
46%	0.7852
47%	0.7914
48%	0.7976
49%	0.8038
50%	0.8100
55%	0.8167
60%	0.8230
65%	0.8294
70%	0.8357
75%	0.8420
80%	0.8484
85%	0.8547
90%	0.8610
95%	0.8674
100%	0.8737
105%	0.8800
110%	0.8864
115%	0.8927
120%	0.8990
125%	0.9054
130%	0.9117
135%	0.9180
140%	0.9244
145%	0.9307
150%	0.9371
160%	0.9497
170%	0.9624
180%	0.9751
190%	0.9877
200%	1.0000
300%	1.0280
400%	1.0560
500%	1.0840
600%	1.1120
700% increase, or more, or First Livestock Facility on lot of record.	1.1400

Table 4. Factor E (Encroaching Land Use Factor)

Encroaching Land Use	Factor E
Type A Land Use	1.1
Type B Land Use	2.2

Encroachment of urban development.

Figure 1. Encroachment of urban development.

Table 5. Permanent Manure or Material Storage Types

Solid Manure: 18% dry matter, or more
Liquid Manure: Less than 18% dry matter
Digestate: Less than 18% dry matter

Storage Odour Potential	Solid or Liquid System	Inside or Outside Livestock Facility	Number referred to in Table 6 (View images below)	Description of permanent manure storages being sited by MDS II, or encroached upon through MDS I application
Very Low	Solid	Inside	V1	Solid, inside, bedded pack (manure accumulates under livestock over time
		Outside	V2	Solid, outside, covered (cover keeps off precipitation to prevent runoff
			V3	Solid, outside, no cover, greater than or equal 30% dry matter (manure is dry enough that a flowpath option can be used for runoff control (Nutrient Management Act, 2002)
			V4	Solid, outside, no cover, 18% to less than 30% dry matter, with covered liquid runoff storage (manure not dry enough to soak up precipitation, so a liquid runoff storage needed, but it has a permanent, tight cover)
	Liquid	Inside	V5	Liquid, inside, underneath slatted floor (manure is stored under the animals in the barn)
		Outside	V6	Liquid, outside, with a permanent, tight fitting cover (negative pressure tarp, concrete lid, inflatable dome, etc.)
		Outside	V7	Liquid, (digestate), outside, no cover (all manure has been treated through anaerobic digestion, or a similar process that reduces odours)
Low	Solid	Outside	L1	Solid, outside, no cover, 18% to less than 30% dry matter, with uncovered liquid runoff storage (manure not dry enough to soak up precipitation, so a liquid low runoff storage needed, but it is uncovered, producing more odour than in V4 above)
Low	Liquid	Outside	L2	Liquid, outside, with a permanent floating cover (tarps, foam panels, etc.)
Medium	Liquid	Outside	M1	Liquid, outside, no cover, straight-walled storage (usually circular or rectangular concrete, or steel storages)
Medium	Liquid	Outside	M2	Liquid, outside, roof, but with open sides (roof keeps off precipitation, but the open sides allow wind to travel over the manure and carry odours)
High	Liquid	Outside	H1	Liquid, outside, no cover, slope-sided storage (earthen manure storages, but not earthen runoff storages associated with a solid manure storage which are L1 above)

MDS I/II Separation Distances for Permanent Manure or Material Storage Types in Table 5

In using Table 6 to determine a value for 'S' - Storage Separation Distance, in some instances it may be necessary to interpolate a value.

For example, you determine the value for Encroachment Base Distance 'F' to be 106 metres. From Table 5, you have determined that the livestock facility uses a storage facility with an odour potential that is considered medium (M1).

Table 6 provides a value for Storage Separation Distance 'S' for an M1 Storage for an Encroachment base Distance 'F' of 100 metres and for an Encroachment Base Distance 'F' of 110 metres, but not for an Encroachment base Distance 'F' of 106 metres. The value of Storage Separation Distance 'S' for an M1 Storage with an Encroachment Base Distance 'F' of 100 metres, is 190 metres. The value of Storage Separation Distance 'S' for an M1 Storage with an Encroachment Base Distance 'F' of 110 metres, is 199 metres. To determine the value of Storage Separation Distance 'S' for an M1 Storage, with an Encroachment Base Distance 'F' of 106 metres interpolate between the numbers 190 and 199. In this example, the value of Storage Separation Distance 'S' for an M1 Storage, with an Encroachment Base Distance 'F' of 106 metres is 195.4 metres. This value should be rounded to the nearest whole number, in this case 195 metres.

When interpolating a value for Storage Separation Distance 'S' do not include any decimal places. Interpolated values with decimal places should be rounded accordingly. For example, if an interpolated value for Storage Separation Distance 'S' is calculated as 202.83 metres, then use a value of 203 metres for Storage Separation Distance 'S'.

In all instances, where Encroachment or Building Base Distance 'F' exceeds 1000 metres, then Storage Separation Distance 'S' will be the same value as 'F'.

Table 6. MDS I/II Separation Distances for Permanent Manure

Building Base Distance (m) for MDS II ("F"), or Encroachment Base Distance (m) for MDS I ("F")	Storage Separation Distances Based on Relative Odour Potential - Storage Base Distance, "S" (m)
	Very Low Odour Storages V1 to V7	Low Odour Storages L1 to L2	Medium Odour Storages M1 to M2	High Odour Storages H1
40	40	64	136	232
50	50	74	145	240
60	60	84	154	248
70	70	93	163	256
80	80	103	172	264
90	90	113	181	272
100	100	123	190	280
110	110	132	199	288
120	120	142	208	296
130	130	152	217	304
140	140	162	226	312
150	150	171	235	320
160	160	181	244	328
170	170	191	253	336
180	180	201	262	344
190	190	210	271	352
200	200	220	280	360
210	210	230	289	368
220	220	240	298	376
230	230	249	307	384
240	240	259	316	392
250	250	269	325	400
260	260	279	334	408
270	270	288	343	416
280	280	298	352	424
290	290	308	361	432
300	300	318	370	440
310	310	327	379	448
320	320	337	388	456
330	330	347	397	464
340	340	357	406	472
350	350	366	415	480
360	360	376	424	488
370	370	386	433	496
380	380	396	442	504
390	390	405	451	512
400	400	415	460	520
420	420	435	478	536
440	440	454	496	552
460	460	474	514	568
480	480	493	532	584
500	500	513	550	600
600	600	610	640	680
800	800	805	820	840
1000	1000	1000	1000	1000
Greater than 1000 m	Storage Base Distance, "S", should be the same as Building Base Distance or Encroachment Base Distance - "F"

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca

Author:	OMAFRA Staff
Creation Date:	01 October 2006
Last Reviewed:	01 October 2006

Land Use

Topics

Explore Government

Resources

Contacts