Scottish Fish Farm Production Survey 2020

3. Atlantic Salmon - Production

Production

Production survey information was collected from all 11 companies actively involved in Atlantic salmon production, farming 232 active sites. This figure represents the entire industry operating in Scotland.

Table 24: Annual production of salmon (tonnes) during 2000-2020 and projected production in 2021

Year	Tonnes	Percentage difference	Year	Tonnes	Percentage difference
2000	128,959	2	2011	158,018	2.5
2001	138,519	7	2012	162,223	2.7
2002	144,589	4	2013	163,234	0.6
2003	169,736	17	2014	179,022	9.7
2004	158,099	-7	2015	171,722	-4.1
2005	129,588	-18	2016	162,817	-5.2
2006	131,847	2	2017	189,707	16.5
2007	129,930	-1.4	2018	156,025	-17.8
2008	128,606	-1	2019	203,881	30.7
2009	144,247	12	2020	192,129	-5.8
2010	154,164	6.9	2021	236,000*

*industry estimate of projected tonnage based on stocks currently being on-grown.

The total production of Atlantic salmon during 2020 was 192,129 tonnes, a decrease of 11,752 tonnes (5.8%) on the 2019 total. This was the second highest level of production recorded in Scotland.

Table 25: Number (000's), production (tonnes) of salmon harvested and mean fish weight (kg) per year class during 2011-2020

	Year of smolt input	Year of harvest	Number (000's)	Production (tonnes)	Mean weight at harvest (kg)
Harvest in year 0 (i.e. in year of input)	2011	2011	109	307	2.8
	2012	2012	127	301	2.4
	2013	2013	0	0	-
	2014	2014	286	720	2.5
	2015	2015	223	626	2.8
	2016	2016	114	333	2.9
	2017	2017	0	0	-
	2018	2018	84	247	2.9
	2019	2019	319	931	2.9
	2020	2020	323	1,208	3.7
Harvest in year 1	2010	2011	18,694	91,105	4.9
	2011	2012	21,502	97,744	4.5
	2012	2013	21,264	106,161	5.0
	2013	2014	20,316	101,997	5.0
	2014	2015	24,038	114,112	4.7
	2015	2016	24,633	111,163	4.5
	2016	2017	25,596	126,445	4.9
	2017	2018	21,825	110,554	5.1
	2018	2019	26,324	132,090	5.0
	2019	2020	29,244	145,833	5.0
Harvest in year 2	2009	2011	13,772	66,606	4.8
	2010	2012	13,053	64,178	4.9
	2011	2013	11,283	57,073	5.1
	2012	2014	13,712	76,305	5.6
	2013	2015	10,910	56,984	5.2
	2014	2016	10,940	51,321	4.7
	2015	2017	11,094	63,262	5.7
	2016	2018	7,165	45,224	6.3
	2017	2019	12,212	70,860	5.8
	2018	2020	8,169	45,088	5.5

Table 26: Number (000's) and production (tonnes) of grilse and pre-salmon harvested during 2011-2020

Year	Grilse (January-August)			Pre-salmon (September-December)
	Number	Tonnes	Average weight (kg)	Number	Tonnes	Average weight (kg)
2011	7,604	35,146	4.6	11,090	55,959	5.0
2012	11,337	53,216	4.7	10,165	44,528	4.4
2013	9,618	47,496	4.9	11,646	58,665	5.0
2014	9,048	46,686	5.2	11,268	55,311	4.9
2015	11,243	53,930	4.8	12,795	60,182	4.7
2016	13,463	59,853	4.4	11,170	51,310	4.6
2017	13,523	68,116	5.0	12,073	58,329	4.8
2018	10,815	53,244	4.9	11,010	57,310	5.2
2019	14,495	72,243	5.0	11,829	59,847	5.1
2020	18,328	88,025	4.8	10,916	57,808	5.3

Table 27: Percentage (by weight) of annual production by growth stage harvested during 2011-2020

Year	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Growth stage	-	-	-	-	-	-	-	-	-	-
Input year fish	<1	<1	0	<1	<1	<1	0	<1	<1	<1
Grilse	22	33	29	26	31	37	36	34	35	46
Pre-salmon	35	27	36	31	35	31	31	36	29	30
Year 2 salmon	42	39	35	42	33	31	33	29	35	23

Survival and Production in Smolt Year Classes

Table 28: Survival and production in smolt year classes during 2001-2020

Year of smolt input	Smolt input (000's)	Harvest year 0				Harvest year 1				Harvest year 2				Total % of year class harvested (survival)	Year class weight (tonnes)	Yield per smolt (kg)
		Number (000's)	Weight (tonnes)	Mean weight (kg)	% harvest	Number (000's)	Weight (tonnes)	Mean weight (kg)	% harvest	Number (000's)	Weight (tonnes)	Mean weight (kg)	% harvest
2001	48,643	557	1,227	2.2	1.1	23,528	90,230	3.8	48.4	15,619	73,255	4.7	32.1	81.6	164,712	3.39
2002	50,086	272	824	3.0	0.5	22,602	96,205	4.3	45.1	15,555	71,988	4.6	31.1	76.7	169,017	3.37
2003	43,083	82	276	3.4	0.2	19,596	85,792	4.4	45.5	13,920	61,850	4.4	32.3	78.0	147,918	3.43
2004	39,041	168	319	1.9	0.4	15,075	67,738	4.5	38.6	14,237	67,537	4.7	36.5	75.5	135,594	3.47
2005	37,168	0	0	-	0	14,036	64,099	4.6	37.8	14,999	69,000	4.6	40.3	78.1	133,099	3.58
2006	41,091	115	211	1.8	0.3	13,787	60,890	4.4	33.5	15,881	73,631	4.6	38.6	72.5	134,732	3.28
2007	37,853	23	40	1.7	0.06	13,011	54,759	4.2	34.4	14,133	66,448	4.7	37.3	71.8	121,247	3.20
2008	36,662	116	216	1.9	0.3	16,338	77,621	4.7	44.6	13,666	68,070	5.0	37.3	82.2	145,907	3.98
2009	38,548	81	178	2.2	0.2	18,266	85,826	4.7	47.4	13,772	66,606	4.8	35.7	83.3	152,610	3.96
2010	38,490	128	268	2.1	0.3	18,694	91,105	4.9	48.6	13,053	64,178	4.9	33.9	82.8	155,551	4.04
2011	42,733	109	307	2.8	0.3	21,502	97,744	4.5	50.3	11,283	57,073	5.1	26.4	77.0	155,124	3.63
2012	41,094	127	301	2.4	0.3	21,264	106,161	5.0	51.7	13,712	76,305	5.6	33.4	85.4	182,767	4.45
2013	40,936	0	0	-	0	20,316	101,997	5.0	49.6	10,910	56,984	5.2	26.7	76.3	158,981	3.88
2014	48,112	286	720	2.5	0.6	24,038	114,112	4.7	50.0	10,940	51,321	4.7	22.7	73.3	166,153	3.45
2015	45,465	223	626	2.8	0.5	24,633	111,163	4.5	54.2	11,094	63,262	5.7	24.4	79.1	175,051	3.85
2016	42,957	114	333	2.9	0.3	25,596	126,445	4.9	59.6	7,165	45,224	6.3	16.7	76.6	172,002	4.00
2017	46,116	0	0	-	0	21,825	110,554	5.1	47.3	12,212	70,860	5.8	26.5	73.8	181,414	3.93
2018	45,513	84	247	2.9	0.2	26,324	132,090	5.0	57.8	8,169	45,088	5.5	17.9	75.9	177,425	3.90
2019	52,990	319	931	2.9	0.6	29,244	145,833	5.0	55.2
2020	52,492	323	1,208	3.7	0.6

In 2018, the last year for which survival can be calculated, the survival rate from smolt input to harvest increased to 75.9%. Of the 2019 year class, 55.8% of the input has been harvested, 2.2% lower than the average harvest of fish one year after input in the 2018 year class. In 2020, 0.6% of the fish were harvested from the 2020 input. This was the same as the proportion of fish harvested from the same year class in 2019.

Smolts to Sea

Table 29: Number (000's) and origin of smolts put to sea during 2011-2020

Year	Smolts put to sea (000's)			Total (000's)	Scottish Origin	English Origin		Other Origin
	S½	S1	S1½		%	(000's)	%	(000's)	%
2011	17,721	25,012	0	42,733	96	1,765	4	0	0
2012	17,334	23,480	280	41,094	96	1,510	4	0	0
2013	19,262	21,534	140	40,936	97	1,169	3	0	0
2014	23,758	24,212	142	48,112	94	893	2	2,072	4
2015	22,886	22,569	10	45,465	96	938	2	1,082	2
2016	22,052	20,905	0	42,957	97	1,048	2	611	1
2017	25,490	20,626	0	46,116	97	976	2	300	<1
2018	21,767	23,746	0	45,513	96	1,318	3	364	<1
2019	24,525	28,465	0	52,990	98	751	1	297	<1
2020	24,809	27,683	0	52,492	96	1,070	2	1,130	2

The total number of smolts put to sea in 2020 was over 52.4 million. This smolt input comprised S½ (47.3%) and S1s (52.7%). Four percent of the smolts stocked to Scottish salmon farms were sourced from outwith Scotland, 2% of which came from sources outwith GB. This was an increase of 2% compared with the proportion observed in 2019.

Survival and Production in Smolt Year Classes by Production Area

Table 30: Number (000's) of smolts put to sea and year class survival by area during 2009-2020

Region	Smolts put to sea (000's)		Harvest in year 0			Harvest in year 1			Harvest in year 2			Total Harvest
	Year	No	Year	No	%	Year	No	%	Year	No	%	No	%
North West	2009	9,986	2009	42	0.4	2010	7,045	70.5	2011	2,003	20.1	9,090	91.0
	2010	9,924	2010	117	1.2	2011	6,324	63.7	2012	2,802	28.2	9,243	93.1
	2011	12,605	2011	53	0.4	2012	7,937	63.0	2013	1,744	13.8	9,734	77.2
	2012	11,588	2012	127	1.1	2013	7,179	62.0	2014	2,623	22.6	9,929	85.7
	2013	10,975	2013	0	0	2014	6,549	59.7	2015	1,695	15.4	8,244	75.1
	2014	17,543	2014	191	1.1	2015	9,649	55.0	2016	3,768	21.5	13,608	77.6
	2015	8,646	2015	223	2.6	2016	6,122	70.8	2017	1,695	19.6	8,040	93.0
	2016	14,534	2016	114	0.8	2017	9,711	66.8	2018	1,882	12.9	11,707	80.5
	2017	9,527	2017	0	0	2018	3,809	40.0	2019	1,739	18.3	5,548	58.2
	2018	15,177	2018	84	0.6	2019	10,947	72.1	2020	1,852	12.2	12,883	84.9
	2019	15,071	2019	205	1.4	2020	7,838	52.0
	2020	19,075	2020	126	0.7
Orkney	2009	1,154	2009	0	0	2010	741	64.2	2011	95	8.2	836	72.4
	2010	2,557	2010	0	0	2011	1,126	44.0	2012	936	36.6	2,062	80.6
	2011	2,718	2011	0	0	2012	1,203	44.3	2013	765	28.1	1,968	72.4
	2012	2,727	2012	0	0	2013	1,422	52.1	2014	1,167	42.8	2,589	94.9
	2013	2,104	2013	0	0	2014	1,023	48.6	2015	512	24.3	1,535	72.9
	2014	2,829	2014	0	0	2015	1,412	49.9	2016	1,244	44.0	2,656	93.9
	2015	3,266	2015	0	0	2016	1,580	48.4	2017	1,521	46.6	3,101	95.0
	2016	3,050	2016	0	0	2017	1,184	38.8	2018	1,571	51.5	2,755	90.3
	2017	3,524	2017	0	0	2018	1,699	48.2	2019	835	23.7	2,534	71.9
	2018	3,616	2018	0	0	2019	2,068	57.2	2020	1,382	38.2	3,450	95.4
	2019	4,670	2019	0	0	2020	2,230	47.8
	2020	4,578	2020	0	0
Shetland	2009	10,031	2009	29	0.3	2010	4,201	41.9	2011	3,234	32.2	7,464	74.4
	2010	11,573	2010	0	0	2011	4,134	35.7	2012	4,292	37.1	8,426	72.8
	2011	11,206	2011	49	0.4	2012	4,911	43.8	2013	2,709	24.2	7,669	68.4
	2012	11,389	2012	0	0	2013	4,995	43.9	2014	4,022	35.3	9,017	79.2
	2013	9,956	2013	0	0	2014	4,289	43.1	2015	3,034	30.5	7,323	73.6
	2014	11,309	2014	0	0	2015	5,042	44.6	2016	2,663	23.5	7,705	68.1
	2015	9,040	2015	0	0	2016	5,322	58.9	2017	1,592	17.6	6,914	76.5
	2016	10,640	2016	0	0	2017	6,012	56.5	2018	1,723	16.2	7,735	72.7
	2017	8,539	2017	0	0	2018	4,579	53.6	2019	2,005	23.5	6,584	77.1
	2018	11,312	2018	0	0	2019	4,430	39.2	2020	1,813	16.0	6,243	55.2
	2019	7,613	2019	114	1.5	2020	4,955	65.1
	2020	10,072	2020	84	0.8
South West	2009	8,200	2009	10	0.1	2010	2,700	32.9	2011	4,697	57.3	7,407	90.3
	2010	6,565	2010	12	0.2	2011	3,000	45.7	2012	2,648	40.3	5,660	86.2
	2011	7,493	2011	0	0	2012	2,673	35.7	2013	3,706	49.4	6,379	85.1
	2012	7,363	2012	0	0	2013	2,841	38.6	2014	3,863	52.5	6,704	91.1
	2013	7,801	2013	0	0	2014	3,202	41.0	2015	3,564	45.7	6,766	86.7
	2014	6,981	2014	95	1.4	2015	3,771	54.0	2016	2,023	29.0	5,889	84.4
	2015	11,156	2015	0	0	2016	4,944	44.3	2017	3,643	32.7	8,587	77.0
	2016	8,093	2016	0	0	2017	4,643	57.4	2018	1,622	20.0	6,265	77.4
	2017	11,106	2017	0	0	2018	5,330	48.0	2019	3,648	32.8	8,978	80.8
	2018	7,177	2018	0	0	2019	4,799	66.9	2020	1,150	16.0	5,949	82.9
	2019	11,100	2019	0	0	2020	6,126	55.2
	2020	9,485	2020	112	1.2
Western Isles	2009	9,177	2009	0	0	2010	3,579	39.0	2011	3,743	40.8	7,322	79.8
	2010	7,870	2010	0	0	2011	4,110	52.2	2012	2,375	30.2	6,485	82.4
	2011	8,711	2011	7	0.1	2012	4,778	54.9	2013	2,358	27.1	7,143	82.0
	2012	8,027	2012	0	0	2013	4,827	60.1	2014	2,037	25.4	6,864	85.5
	2013	10,100	2013	0	0	2014	5,254	52.0	2015	2,105	20.8	7,359	72.8
	2014	9,451	2014	0	0	2015	4,164	44.1	2016	1,242	13.1	5,406	57.2
	2015	13,357	2015	0	0	2016	6,665	49.9	2017	2,643	19.8	9,308	69.7
	2016	6,640	2016	0	0	2017	4,046	60.9	2018	367	5.5	4,413	66.4
	2017	13,420	2017	0	0	2018	6,408	47.7	2019	3,985	29.7	10,393	77.4
	2018	8,231	2018	0	0	2019	4,080	49.6	2020	1,972	24.0	6,052	73.5
	2019	14,536	2019	0	0	2020	8,094	55.7
	2020	9,282	2020	0	0

The practice of putting smolts to sea in one region and subsequently moving them to another sea water site in another region for harvest can lead to an overestimation of survival in some regions and underestimation in others.

© Crown copyright and database rights 2020 OS (100024655)

Staffing

Table 31: Number of staff employed in the production of salmon during 2011-2020

Year	Full-time Male	Full-time Female	Total Full-time	Part-time Male	Part-time Female	Total Part-time	Total Staff	Productivity (tonnes/person)
2011	847	76	923	62	28	90	1,013	156.0
2012	870	74	944	80	35	115	1,059	153.2
2013	997	84	1,081	74	25	99	1,180	138.3
2014	1,082	109	1,191	98	36	134	1,325	135.1
2015	1,125	131	1,256	70	37	107	1,363	126.0
2016	1,182	197	1,379	67	40	107	1,486	109.6
2017	1,175	145	1,320	59	10	69	1,389	136.6
2018	1,273	142	1,415	35	16	51	1,466	106.4
2019	1,425	166	1,591	35	25	60	1,651	123.5
2020	1,412	145	1,557	45	28	73	1,630	117.9

In 2020, the total number of staff employed in salmon production was 1,630, a decrease of 21 compared with 2019. The staffing figures collected refer specifically to the production of Atlantic salmon and do not include figures for staff involved with processing or marketing activities. Productivity decreased from 123.5 to 117.9 tonnes produced per person.

Production Methods

Table 32: Production methods, capacity, tonnage and average stocking densities (kg/m3) during 2018-2020

Method	Number of sites			Total capacity (000's cubic metres)			Production (tonnes)
	2018	2019	2020	2018	2019	2020	2018	2019	2020
Seawater tanks	4	2	1	7.1	6.3	5.1	35	28	18
Seawater cages	217	224	231	19,922	21,628	22,818	155,990	203,853	192,111
For cage sites: ratio of production (kg) to cage capacity (m3)							7.8	9.4	8.4

In 2020, the majority of fish were produced in seawater cages. There were 18 tonnes of production from seawater tank sites in 2020. This reflects the high installation and running costs incurred in operating seawater tank systems. Most seawater tank capacity has been re-deployed for the production of other species of marine finfish or salmon broodstock.

Sea cage capacity increased by 1,190,000 m³ during 2020 and the number of sea cage sites in production increased by seven. Production efficiency in sea cages, measured as the ratio of fish weight in kilograms produced per cubic metre, decreased from 9.4 kg/m³ in 2019 to 8.4 kg/m³ in 2020.

Scale of Production by Site

Table 33: Number of sites shown in relation to their production grouping and percentage share of production 2011-2020

Production grouping (tonnes)	0	1-50	51-100	101-200	201-500	501-1,000	>1,000	Total
								Sites*	Tonnes
2011	106	9	7	9	28	29	66	254	158,018
2012	115	3	5	9	25	33	67	257	162,223
2013	112	9	3	12	18	36	67	257	163,234
2014	117	8	1	9	26	29	70	260	179,022
2015	115	2	1	9	26	26	75	254	171,722
2016	117	3	3	9	22	26	73	253	162,817
2017	93	2	0	8	13	33	77	226	189,707
2018	100	6	2	6	17	26	64	221	156,025
2019	80	8	7	1	17	24	89	226	203,881
2020	101	6	2	7	17	18	81	232	192,129
2011	0	0.2	0.3	0.8	6.4	13.4	78.9	-	-
2012	0	<0.1	0.2	0.9	5.0	15.0	78.8	-	-
2013	0	0.1	0.1	1.1	4.0	16.7	78.0	-	-
2014	0	0.1	<0.1	0.8	5.0	12.0	82.0	-	-
2015	0	<0.1	<0.1	0.9	5.0	11.6	82.4	-	-
2016	0	<0.1	0.1	0.8	4.6	11.7	82.8	-	-
2017	0	<0.1	0	0.6	3.2	13.9	82.3	-	-
2018	0	<0.1	<0.1	0.6	3.7	13.5	82.0	-	-
2019	0	<0.1	0.3	<0.1	2.8	9.7	87.1	-	-
2020	0	0.1	0.1	0.5	2.8	6.9	89.6	-	-

* Includes farms stocked but having no production.

In 2020, the number of sites with no production increased by 21 and the number producing 1 to 500 tonnes decreased by one. The number of sites producing over 500 tonnes decreased by 14 and the trend towards production in larger sites continued, with 89.6% of production being derived from sites producing over 1,000 tonnes.

Company Productivity

Table 34: Number of companies grouped by production (tonnes), staff and productivity (tonnes per person) during 2019-2020

Total Tonnage		0-100	101-200	201-400	401-700	701-1,000	1,001-2,000	>2,000	Total
No. of companies	2019	4	0	0	0	0	1	6	11
	2020	4	0	0	0	0	1	6	11
No. of tonnes	2019	28	0	0	0	0	1,636	202,217	203,881
	2020	18	0	0	0	0	1,722	190,389	192,129
Staff (total)	2019	13	0	0	0	0	36	1,602	1,651
	2020	36	0	0	0	0	40	1,554	1,630
Productivity (tonnes/person)	2019	2	-	-	-	-	45	126	124
	2020	0.5	-	-	-	-	43	123	118

The greatest productivity of 123 tonnes per person was achieved in the companies producing over 2,000 tonnes. The least productivity of 0.5 tonnes per person was from the companies producing between 0-100

tonnes. In comparison with 2019, the average company productivity decreased from 124 to 118 tonnes per person. Overall, production was dominated by six companies in 2020 which between them accounted for 99% of Scotland's farmed Atlantic salmon production.

Staff and Production by Production Area

Table 35: Staff and production (tonnes) by area 2011-2020 and projected production in 2021

Region	Year	Staff		Annual Production	Productivity (t/person)	Year of input		Grilse		Pre-salmon		Year 2 Salmon
		F/T	P/T	Tonnes		Mean weight (kg)		Tonnes	Mean weight (kg)	Tonnes	Mean weight (kg)	Tonnes	Mean weight (kg)
North West	2011	303	38	41,656	122	174	3.2	13,152	4.3	16,879	5.1	11,451	5.7
	2012	300	40	50,987	150	301	2.4	31,121	4.7	5,842	4.7	13,723	4.9
	2013	350	48	43,320	109	0	-	17,937	4.9	16,417	4.7	8,966	5.1
	2014	348	46	50,873	129	511	2.7	26,440	5.3	8,731	5.5	15,191	5.8
	2015	382	66	54,741	122	626	2.8	18,046	4.8	26,897	4.6	9,172	5.4
	2016	538	30	46,917	83	333	2.9	21,576	4.7	7,515	5.0	17,493	4.6
	2017	437	11	55,690	124	0	-	32,113	5.1	14,920	4.4	8,657	5.1
	2018	453	17	30,948	66	247	2.9	11,899	4.9	7,780	5.6	11,022	5.9
	2019	662	32	66,633	96	472	2.3	35,020	5.0	21,873	5.5	9,268	5.3
	2020	546	19	48,762	86	539	4.2	24,065	4.7	13,852	5.2	10,306	5.7
	2021			86,934*
Orkney	2011	69	0	6,369	92	0	-	3,508	5.1	2,355	5.4	506	5.3
	2012	65	6	11,694	165	0	-	3,532	5.3	2,720	5.1	5,442	5.8
	2013	86	3	11,479	129	0	-	3,191	5.1	4,491	5.7	3,797	5.0
	2014	90	6	13,029	136	0	-	980	5.5	5,045	6.0	7,004	6.0
	2015	93	1	11,074	118	0	-	1,386	5.0	6,129	5.4	3,559	6.9
	2016	102	8	14,752	134	0	-	3,491	4.6	4,668	5.7	6,593	5.3
	2017	108	9	16,756	143	0	-	3,215	5.3	3,823	6.6	9,718	6.4
	2018	93	0	20,956	225	0	-	2,808	5.2	6,906	6.0	11,242	7.2
	2019	110	1	17,758	160	0	-	6,393	5.9	5,952	6.1	5,413	6.5
	2020	138	13	21,612	143	0	-	4,383	5.8	8,875	6.0	8,354	6.0
	2021			23,104*
Shetland	2011	189	22	35,493	168	118	2.4	4,611	4.7	16,071	5.1	14,693	4.5
	2012	188	16	43,010	211	0	-	6,083	4.3	15,784	4.5	21,143	4.9
	2013	210	14	36,694	164	0	-	5,822	4.5	18,121	4.9	12,751	4.7
	2014	224	24	46,369	187	0	-	6,196	5.7	17,604	5.5	22,569	5.6
	2015	228	19	42,786	173	0	-	11,134	5.4	14,939	5.0	16,713	5.5
	2016	200	23	37,464	168	0	-	11,844	4.4	12,906	4.9	12,714	4.8
	2017	207	12	38,908	178	0	-	14,132	4.6	15,284	5.2	9,492	6.0
	2018	206	3	35,947	172	0	-	12,741	5.4	12,835	5.8	10,371	6.0
	2019	227	6	36,141	155	459	4.0	11,478	5.2	12,451	5.6	11,753	5.9
	2020	280	12	40,749	140	356	4.2	16,452	5.6	12,743	6.3	11,198	6.2
	2021			42,131*
South West	2011	212	17	37,157	162	0	-	3,618	4.8	10,899	4.8	22,640	4.8
	2012	221	24	26,850	110	0	-	9,315	5.4	4,508	4.8	13,027	4.9
	2013	251	19	34,924	129	0	-	5,847	4.8	9,111	5.6	19,966	5.4
	2014	279	29	34,976	114	209	2.2	4,278	5.1	10,476	4.4	20,013	5.2
	2015	302	12	35,911	114	0	-	10,356	4.7	6,686	4.3	18,869	5.3
	2016	305	26	31,022	94	0	-	12,349	4.3	9,246	4.4	9,427	4.7
	2017	316	18	44,575	133	0	-	11,206	5.7	12,903	4.8	20,466	5.6
	2018	375	14	37,506	96	0	-	9,690	5.1	17,246	5.0	10,570	6.5
	2019	338	7	44,881	130	0	-	8,071	5.4	13,846	4.2	22,964	6.3
	2020	331	17	36,367	105	313	2.8	16,394	4.9	13,519	4.8	6,141	5.3
	2021			47,189*
Western Isles	2011	150	13	37,343	229	15	2.1	10,257	4.7	9,755	5.0	17,316	4.6
	2012	170	29	29,682	149	0	-	3,165	3.7	15,674	4.0	10,843	4.6
	2013	184	15	36,817	185	0	-	14,699	5.2	10,525	5.2	11,593	4.9
	2014	250	29	33,775	121	0	-	8,792	4.5	13,455	4.1	11,528	5.7
	2015	251	9	27,210	105	0	-	13,008	4.4	5,531	4.5	8,671	4.1
	2016	234	20	32,662	129	0	-	10,593	4.2	16,975	4.1	5,094	4.1
	2017	252	19	33,778	125	0	-	7,450	4.7	11,399	4.6	14,929	5.6
	2018	288	17	30,668	101	0	-	16,106	4.5	12,543	4.4	2,019	5.5
	2019	254	14	38,468	144	0	-	11,281	4.1	5,725	4.2	21,462	5.4
	2020	262	12	44,639	163	0	-	26,731	4.3	8,819	4.6	9,089	4.6
	2021			36,642*
Scotland Total	2011	923	90	158,018	156	307	2.8	35,146	4.6	55,959	5.0	66,606	4.8
	2012	944	115	162,223	153	301	2.4	53,216	4.7	44,528	4.4	64,178	4.9
	2013	1,081	99	163,234	138	0	-	47,496	4.9	58,665	5.0	57,073	5.1
	2014	1,191	134	179,022	135	720	2.5	46,686	5.2	55,311	4.9	76,305	5.6
	2015	1,256	107	171,722	126	626	2.8	53,930	4.8	60,182	4.7	56,984	5.2
	2016	1,379	107	162,817	110	333	2.9	59,853	4.4	51,310	4.6	51,321	4.7
	2017	1,320	69	189,707	137	0	-	68,116	5.0	58,329	4.8	63,262	5.7
	2018	1,415	51	156,025	106	247	2.9	53,244	4.9	57,310	5.2	45,224	6.3
	2019	1,591	60	203,881	124	931	2.9	72,243	5.0	59,847	5.1	70,860	5.8
	2020	1,557	73	192,129	118	1,208	3.7	88,025	4.8	57,808	5.3	45,088	5.5
	2021			236,000*

*Estimated production for 2021.

Company and Site Data

Table 36: Number of companies and sites engaged in the production of Atlantic salmon during 2011-2020

Year	Number of companies			Number of sites
	Producing	Non-producing	Total	Producing	Non- producing	Total
2011	21	6	27	148	106	254
2012	16	6	22	142	115	257
2013	15	6	21	145	112	257
2014	11	7	18	143	117	260
2015	10	6	16	139	115	254
2016	10	5	15	136	117	253
2017	8	4	12	133	93	226
2018	8	4	12	121	100	221
2019	8	3	11	146	80	226
2020	8	3	11	131	101	232

The number of companies authorised and actively producing Atlantic salmon in 2020 was eight, the same number as in 2019. Three companies remained active and authorised, although not producing salmon for harvest in 2020. This continued the trend of Atlantic salmon production becoming concentrated within fewer companies. These 11 companies had 232 registered active sites, although not all these sites produced fish for harvest in 2020.

Fallowing

Table 37: Number of seawater cage sites employing a fallow period during 2011-2020

Year	Fallow Period (weeks)						Total
	0	<4	4-8	9-26	27-51	52
2011	60	10	31	85	27	39	252
2012	58	4	31	97	28	37	255
2013	51	4	31	92	35	43	253
2014	48	4	36	89	29	51	257
2015	45	6	41	84	27	47	250
2016	47	5	27	88	32	49	248
2017	40	9	21	88	24	40	222
2018	46	5	32	76	26	32	217
2019	37	12	31	85	22	37	224
2020	57	8	33	74	14	45	231

Of the 231 seawater cage sites recorded as being active in 2020, 45 sites were fallow for the entire year whilst 129 sites were fallow for a variable period. There were 57 sites that did not fallow in 2020. The normal production cycle in seawater varies in length between 12 months and two years. A fallow period at the end of production can break the cycle of disease or parasitic infections.

Broodstock Sites

Table 38: Number of sites holding Atlantic salmon broodstock during 2011-2020

Year	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Broodstock sites	11	7	8	8	4	3	4	4	3	4

In 2020, the number of freshwater and seawater sites holding broodstock increased to four sites. The number of sites holding broodstock in any one year can be variable, as can be seen from the previous years' figures, which indicate no obvious trend. A total of 3,776 fish were stripped, yielding 20.0 million ova, giving an average yield of 5,297 ova per fish.

Organic Production

Table 39: Organic production of Atlantic salmon during 2011-2020

Year	Number of active cage sites	Number of cage sites certified as organic	Production (tonnes)
2011	252	10	3,104
2012	255	7	4,597
2013	253	8	5,207
2014	257	8	3,588
2015	250	5	2,382
2016	248	5	3,903
2017	222	5	4,644
2018	217	5	4,219
2019	224	4	4,462
2020	231	9	12,528

Of the 231 active Atlantic salmon seawater cage sites in 2020, nine were certified as organic, producing 12,528 tonnes.

Escapes

There were five incidents involving the loss of 204,901 fish from seawater Atlantic salmon sites in 2020. There were 13 additional incidents reported where the companies confirmed there was no loss of fish.