TY  - BOOK
AU  - Kantharaj S 
AU  - Athman K V (Guide)
TI  - Evaluation of boar semen extended in belt`s ville thaw solution
U1  - 636.082 
PY  - 2001///
CY  - Mannuthy
PB  - Department of Animal Reproduction, College of Veterinary and Animal Sciences
N2  - An experiment was conducted to study the effect of 
natural service and artificial insemination on reproductive 
performance of pigs and to assess the fertility and 
preservability of boar semen extended in Belt's ville thaw 
solution. 
Twenty-four Large White Yorkshire (LWY) gilts, 
twenty-four sows and six LWY boars were selected for the 
study. Out of six boars, three boars were used for natural 
service and the other three maintained for artificial 
insemination purpose. 
A total of 52 ejaculates were collected from boars 
maintained for artificial insemination purpose at weekly 
intervals by the gloved hand technique. Among these boars, no 
significant differences were found for most of the semen 
characteristics except proximal and distal protoplasmic 
droplets , which were significantly different between boars 
(P<O.05). Negative correlation between total volume of 
ejaculate and sperm concentration was observed. No 
significant correlation between total sperm abnormalities and 
live sperm count could be detected. 
Twenty ejaculates from these boars were used for 
preservation studies. No significant variation In the 
preservability of spermatozoa could be detected between 
 
boars, whereas, there was a highly significant difference 
(p<O.O 1) in the preservability of spermatozoa between hours of 
preservation. 
Twelve LWY gilts and twelve sows (Group-I) and 
three boars were used for natural service. Each gilt and sow 
was mated twice during the oestrus. Twelve gilts and twelve 
sows (Group-Il) were artificially inseminated twice during the 
oestrus with the semen diluted in BTS. 
There was a significant difference (P<0.05) In the 
duration of oestrus between gilts and sows. There was a 
marginal difference in the conception rates between naturally 
served and artificially inseminated gilts and sows. The 
farrowing rate was 100 per cent for both naturally served and 
artificially inseminated gilts and sows. There was a significant 
difference in the gestation length between artificially 
inseminated gilts and sows. There was a significant variation• 
in the litter size between naturally served and artificially 
inseminated gilts and sows. 
It can be concluded from the study that artificial 
insemination In pIgS could well be performed under 
commercial farming conditions for effective disease control 
and increased productivity. 


UR  - https://krishikosh.egranth.ac.in/handle/1/5810154227
ER  -