Table 2

Effect of embryo stages on pig cloning efficiency

Group (embryo stage)	No. of recipients used	No. of embryos transferred(Mean No./recipient)	No. of recipients pregnant (%)	No. of recipients farrowed (%)	No. of cloned piglets born (%)
Group A (1 cell)	21	3,202 (152.5)	5 (23.8)	3 (14.3)	12 (0.38)
Group B (1–2 cell)	9	2,401 (266.8)	2 (22.2)	2 (22.2)	6 (0.25)
Group C (2–4 cell)	26	4,411 (169.7)	4 (15.4)	3 (11.5)	10 (3.3)
Group D (1–4 cell)	10	1,521 (152.1)	3 (30.0)	2 (20.0)	9 (4.5)

Journal of Animal Reproduction and Biotechnology 2020;35:258-64 https://doi.org/10.12750/JARB.35.3.258