Table I.
Testicular and germ cell characteristics |
Day 42 (N=7 rats/group)
|
Day 56 (N=7 rats/group)
|
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Control | 400 mg dry matter/kg body weight/day | 800 mg dry matter/kg body weight/day | Control | 400 mg dry matter/kg body weight/day | 800 mg dry matter/kg body weight/day | ||
Reproductive organ weight (g/100 g body weight) | |||||||
testis | 0.48 ± 0.03 | 0.43 ± 0.04 | 0.42 ± 0.04 | 0.39 ± 0.01 | 0.40 ± 0.01 | 0.42±0.01 | |
epididymis | 0.12 ± 0.01 | 0.12 ± 0.00 | 0.12 ± 0.01 | 0.11 ± 0.00 | 0.11 ± 0.00 | 0.11 ± 0.01 | |
prostate gland | 0.10 ± 0.01 | 0.09 ± 0.01 | 0.09 ± 0.01 | 0.09 ± 0.02 | 0.08 ± 0.00 | 0.10 ± 0.02 | |
seminal vesicle | 0.14 ± 0.00 | 0.13 ± 0.01 | 0.13 ± 0.00 | 0.13 ± 0.01 | 0.13 ± 0.01 | 0.12 ± 0.01 | |
Seminiferous tubule diameter (µm) | 211.50 ± 1.63a | 199.11 ± 1.44b | 173.13 ± 1.59c | 217.65 ± 1.29 | 220.57 ± 1.39 | 217.38 ± 1.36 | |
Epididymal diameter (µm) | |||||||
caput part | 261.72 ± 5.76a | 238.21 ± 5.65b | 173.84 ± 2.95c | 269.82 ± 4.00 | 257.87 ± 4.34 | 263.93 ± 4.84 | |
corpus part | 288.75 ± 6.39a | 246.42 ± 8.29b | 155.71 ± 3.68c | 238.00 ± 5.16 | 249.00 ± 8.35 | 238.66 ± 1.65 | |
caudal part | 342.22 ± 10.89a | 288.40 ± 5.55b | 199.59 ± 3.54c | 260.67 ± 2.90 | 256.76 ± 4.79 | 249.45 ± 5.53 | |
No. of germ cells (cells/1000 µm2) | |||||||
spermatogonia | 1.51 ± 0.07 | 1.29 ± 0.09 | 1.44 ± 0.09 | 1.34 ± 0.04 | 1.24 ± 0.05 | 1.38 ± 0.07 | |
spermatocytes | 1.71 ± 0.07 | 1.74 ± 0.07 | 1.88 ± 0.1 | 1.66 ± 0.06 | 1.76 ± 0.04 | 1.61 ± 0.06 | |
spermatids | 4.99 ± 0.15a | 4.99 ± 0.24a | 1.97 ± 0.13b | 4.82 ± 0.15 | 4.94 ± 0.14 | 4.91 ± 0.15 | |
Spermatozoal quantity (cells x 106/g-testis) | |||||||
daily sperm production | 0.56 ± 0.02a | 0.48 ± 0.02b | 0.47 ± 0.01b | 0.61 ± 0.01 | 0.62 ± 0.03 | 0.62 ± 0.02 | |
caudal epididymal spermatozoa | 343.39 ± 12.70a | 278.19 ± 13.98b | 268.60 ± 11.24b | 364.23 ± 16.31 | 357.39 ± 13.29 | 370.62 ± 17.31 | |
Spermatozoal quality (%) | |||||||
spermatozoal motility | 76.21 ± 1.46a | 65.15 ± 2.43b | 61.01 ± 4.35b | 75.81 ± 2.47 | 75.72 ± 1.59 | 73.38 ± 2.72 | |
spermatozoal viability | 65.00 ± 2.27a | 41.84 ± 1.72b | 34.76 ± 3.26b | 69.05 ± 2.36 | 69.94 ± 2.31 | 72.83 ± 1.63 | |
normal spermatozoa | 46.14 ± 3.08a | 32.92 ± 4.34b | 31.29 ± 3.42b | 49.79 ± 3.28 | 45.68 ± 3.49 | 40.76 ± 2.75 | |
Types of abnormal spermatozoa (%) | |||||||
tailless | 9.12 ± 2.06 | 17.74 ± 7.07 | 16.18 ± 3.10 | 9.44 ± 0.88 | 9.79 ± 0.69 | 11.27 ± 1.68 | |
no hook head | 8.19 ± 2.79 | 9.05 ± 1.99 | 8.85 ± 1.64 | 8.73 ± 2.40 | 8.79 ± 1.10 | 7.74± 2.65 | |
amorphous head | 0.52 ± 0.14 | 1.01 ± 0.28 | 1.42 ± 0.56 | 0.24 ± 0.04 | 0.54 ± 0.32 | 0.68 ± 0.38 | |
neck abnormal | 2.02 ± 0.42 | 2.83 ± 0.54 | 2.51 ± 0.54 | 1.33 ± 0.31 | 1.59 ± 0.54 | 1.97 ± 0.29 | |
tail abnormal | 33.07±3.01 | 36.514.36 | 38.92±3.15 | 27.813.90 | 29.152.30 | 29.51±4.13 | |
tailless | 9.12 ± 2.06 | 17.74 ± 7.07 | 16.18 ± 3.10 | 9.44 ± 0.88 | 9.79 ± 0.69 | 11.27 ± 1.68 | |
Acrosomal intactness (%) | 90.43 ± 0.77 | 88.88 ± 1.15 | 84.50 ± 2.39 | 90.73 ± 0.77 | 89.27 ± 0.55 | 88.69 ± 1.78 | |
Acrosome-membrane intactness (%) | |||||||
acrosome-membrane intact | 41.47 ± 6.01 | 23.42 ± 3.87 | 20.18 ± 3.02 | 35.94 ± 7.43 | 36.55 ± 7.08 | 41.94 ± 7.37 | |
acrosome damage- membrane intact | 41.76 ± 4.23 | 49.88 ± 3.73 | 51.65 ± 3.13 | 29.20 ± 5.72 | 29.73 ± 2.59 | 35.28 ± 2.55 | |
acrosome intact-membrane damage | 0.05 ± 0.01 | 0.05 ± 0.02 | 0.06 ± 0.03 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | |
acrosome-membrane damage | 16.62 ± 3.93 | 26.70 ± 4.59 | 28.11 ± 2.81 | 16.37 ± 4.26 | 19.05 ± 5.36 | 14.88 ± 3.40 |
One-way ANOVA and least significant difference (LSD) were employed.
Values in the same row not shown by common letters (a, b and c) were significant difference at p<0.05.
Results are expressed as the mean±SD.