Studies on Antimicrobial and Immunomodulatory Effects of Hot Aqueous Extract of Acacia nilotica L. Leaves against Common Veterinary Pathogens

Table 1

In vitro antibacterial effects.

S. no.	Name of bacteria	Quantity of extract (mg/disc)	Zone of inhibition (mm) after
			24 hrs	36 hrs	48 hrs
1	Staphylococcus  aureus	1.25	9	8	8
		2.5	10	9	9
		5	17	15	15
		10	20	19	19
		20	20	20	20
	Positive control	Tetracycline (30 µg)	30	30	30
2	Bacillus  cereus	1.25	8	8	7
		2.5	12	10	9
		5	15	15	14
		10	18	17	17
		20	19	19	18
	Positive control	Tetracycline (30 µg)	23	23	23
3	Streptococcus  uberis	1.25	9	9	9
		2.5	12	12	12
		5	16	16	16
		10	19	19	18
		20	22	22	22
	Positive control	Tetracycline (30 µg)	27	27	27
4	Escherichia  coli	1.25	0	0	0
		2.5	8	8	7
		5	9	8	8
		10	11	10	10
		20	15	14	14
	Positive control	Amikacin (30 µg)	24	24	24
5	Pseudomonas  aeruginosa	1.25	8	8	7
		2.5	10	9	8
		5	13	12	12
		10	15	13	13
		20	15	13	12
	Positive control	Amikacin (30 µg)	18	18	18
6	Klebsiella  pneumoniae	1.25	9	9	8
		2.5	10	9	8
		5	13	12	12
		10	13	13	13
		20	13	13	13
	Positive control	Amikacin (30 µg)	25	25	25
7	Negative control	0	—	—	—