Effect of Addition of Melatonin on the Liquid Storage (5°C) of Mithun (Bos frontalis) Semen

Table 2

Mean (±S.E.) viability percentage for mithun semen following storage at 5°C for different storage times.

Additives	Storage period
	0 h	6 h	12 h	24 h	30 h
Control	74.10 ± 1.70^a	66.77 ± 1.49^a	50.69 ± 1.53^ab	41.04 ± 1.68^a	35.90 ± 1.57^a
MT 1 mM	74.70 ± 1.51^a	70.76 ± 1.50^b	54.34 ± 1.34^bc	44.41 ± 1.21^b	39.94 ± 1.53^b
MT 2 mM	76.06 ± 1.54^a	71.41 ± 1.28^b	56.69 ± 1.79^c	46.49 ± 1.23^bc	41.10 ± 1.22^b
MT 3 mM	79.14 ± 1.47^b	76.19 ± 1.70^c	61.28 ± 1.84^d	48.93 ± 1.97^c	45.72 ± 1.35^c
MT 4 mM	73.84 ± 1.31^a	68.88 ± 1.51^ab	48.43 ± 2.04^a	38.27 ± 1.48^a	33.91 ± 1.40^a

Within columns means with different letters (a, b, c, d) differ significantly (P < 0.05).