Scale of animal exploitation for food and feed

	A	B	C	D	E	F	G	H	I	J
1	Animals	Individual welfare range (Rethink Priorities' Fischer, 2023, and my own guesses for others in italics)	Total welfare range-years/tonne produced	Total welfare range of those alive at any time (billions)	Welfare range * number killed per year (billions)	Number alive at any time (billions)	Number killed per year (billions)	Total weight of animals harvested per year (millions of tonnes)	Sources for animal numbers and tonnage

2	TOTAL FARMED/RAISED (excl. live feed for mandarin fish)		123.6	27.7	187.9	2245	552,612	224
3	Pigs	0.515	4.1	0.5	0.77	0.98	1.49	123	Šimčikas, 2020 and Our World in Data (a, b)
4	Cattle (and buffaloes)	0.5	11.1	0.9	0.17	1.7	0.34	76	Šimčikas, 2020 and Our World in Data (a, b)
5	Sheep and goats	0.5	66.1	1.1	0.57	2.2	1.14	17	Šimčikas, 2020 and Our World in Data (a, b)
6	Chickens	0.332	56.6	7.9	24.9	23.7	75	139	Šimčikas, 2020 and Our World in Data (a, b)
7	Fish (excluding wild fishery stocking)	0.089	152.8	9.2	9.9	103	111	60	Šimčikas, 2020, FAO, 2022 (Figure 13)
8	Fish for wild fishery stocking	0.089		1.3	7.1	15	80		Šimčikas, 2020, Šimčikas, 2019
9	Decapod shrimp (farmed)	0.031	1080.3	7.1	13.6	230	440	6.6	Waldhorn & Autric, 2023
10	Insect larvae (2030 projection)	0.002	438.4	0.78	23.8	391	11,905	1.8	2030 production projection by de Jong & Nikolik, 2021 (pdf)
11	Brine shrimp nauplii	0.0002	98630.1	0.30	108.0	1479	540,000	0.003	Boddy/Shrimp Welfare Project, unpublished, tonnage from The Fish Site, 2019
12	Live feed fish for mandarin fish (China)	0.06	1023.5	1.7	24.0	29	400	1.7	St. Jules, 2024
13	TOTAL WILD-CAUGHT				1046.9		38,881	82.8
14	Fish (total wild-caught)	0.075			105.2		1,400	79	Mood & Brooke, 2024, Table 3
15	Fish for fishmeal/fish oil	0.065			52.7		810	17	Mood & Brooke, 2024, Tables 3, S6
16	Fish for food	0.089			52.5		590	63	Based on Mood & Brooke, 2024
17	Decapod shrimp (total wild-caught)	0.025			940.6		37,368	3.4	Ryba et al., 2023
18	Sergestid (decapod) shrimp	0.025			907.5		36,300		Ryba et al., 2023
19	Caridean (decapod) shrimp	0.031			24.2		781		Ryba et al., 2023
20	Penaeid (decapod) shrimp	0.031			8.9		287		Ryba et al., 2023
21	Antarctic krill	0.01			1.1		113		Borthwick et al., 2021 (pdf)
22	HUMANS (for comparison)	1		8.1	0.061	8.1	0.06		Ritchie & Mathieu, 2023
23
24
25	Bivalves (potential)	0.0002	6.0	0.12	0.040	600	200	20	Potential annual production scale based on the scenario of Costello et al., 2020, Figure 4c
26	Farmed animals replaced by bivalves (potential), 0.05		123.6	0.12	0.84	10.02	2,467	1.00	0.05 tonnes of other farmed animals replaced per tonne of bivalves, proportionally	0.004463713516
27	Farmed animals replaced by bivalves (potential), 0.5		123.6	1.24	8.39	100.20	24,667	10.00	0.5 tonnes of other farmed animals replaced per tonne of bivalves, proportionally	0.04463713516
28	Farmed animals replaced by bivalves (potential), 0.8		123.6	1.98	13.42	160.32	39,467	16.00	0.8 tonnes of other farmed animals replaced per tonne of bivalves, proportionally	0.07141941626
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100