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Are your boars IN or OUT?
Successful breeding starts always on choosing breeding animals. Buying boars nowadays may range from Php 30-120,000 depending on the line, conformation, genetic merit and source of the boar. You also provide housing, feeds, medicine etc. to ensure good environment and care were given to them. In this case, knowing boar’s performance is crucial.
Most local farms would only check the motility and concentration before extension or insemination. In this study, shows the percentage of normal sperm cell of boar’s semen from a local AI center.
Five (5) boars extended semen was checked for Total motility, progressive motility and total abnormal forms using Sperm Precision Technologies. All boars’ semen was sold locally and caters mostly commercial and backyard farms.
The result shows that only 1 out of 5 boars passed the standard of not more than 25% abnormal forms. While 4 boars passed the standard of not less than 60% general motility and not less than 40% progressive motility.
On the basis of motility and morphology below is the percentage normal sperm cell of the tested boars.
|Boar Ref. No.||% Normal Cell|
Total motility percentage is the total percentage of motile or moving sperm cell, which is most routinely used in sorting ejaculate prior to extension or basis of acceptance before insemination. Forward progression describes how fast the motile sperm are moving. A normal morphology, shape or form of the sperm cell includes checking the head shape, tail deformities and presence of cytoplasmic droplets, any borderline sperm are counted as abnormal. WHO standard of not more than 25% of total abnormalities are common basis on when to suspect the boar for culling. On a more strict criteria maximum of 5% on head deformities, 5% on tail abnormalities, 10% of cytoplasmic droplets and maximum of 5% defects on acrosome integrity may be applied.
*Adjusting dose concentration or using a technique of post-cervical or deep intrauterine insemination may help you deposit more viable semen at the site of fertilization for boars near at the borderline. For boars having more than 25% defective sperm cell, it would be best to know the contribution of the boar by computing its cost and comparing it to the cost and genetic/production contribution. It is very important to keep records. The dates when the boar has served a sow, as well as the number of the sow that has been served, must be recorded so that infertile boars and boars that give small litters can be identified and eliminated.
*To know the total viability of the sperm cells, hyperosmotic swelling test, and vitality test is advised to perform.