Elnora Crous explains to Glenneis Kriel how laparoscopic insemination has helped to accelerate genetic progress in the Dohne Merino stud on their family farm, Jongensklip, near Caledon.
Elnora Crous, who farms with her father, Dawie, on Jongensklip near Caledon, uses laparoscopic insemination rather than artificial insemination on their Dohne Merino stud ewes. The goal is to produce top quality rams for their commercial flock.
Laparoscopic insemination is a procedure in which semen is injected into the lumen of the ewe’s uterine horn, enabling a farmer to use top ram genetics in more ewes over a shorter period than is possible with natural breeding. The procedure in effect helps to accelerate genetic progress, says Elnora.
“For a laparoscopy, you can collect enough semen from one ram in about three sittings, to inseminate up to 200 ewes in one day,” she explains.
In comparison, when natural breeding techniques are used, a single ram is used on about 30 ewes for 30 to 34 days, depending on veld conditions. There is also a greater risk that a ram may injure or overexert itself.
Elnora prefers making use of laparoscopic insemination over artificial insemination, where the semen is inserted into the vagina of the ewe, as it requires the use of smaller volumes of semen per insemination.
“The number of times semen from one collection can be used depends on its quality. I would, however, think you can perform five times more inseminations from one collection of semen with laparoscopies than with artificial insemination,” says Elnora. Laparoscopic insemination is expensive, and costs about R62/ewe when semen from one of the farm’s own rams is used.
RECIPE FOR SUCCESS
Elnora stresses that when it comes to laparoscopy, she is still a ‘rookie’. She has, however, used the procedure for three years and has identified four major factors that contribute to its success.
Firstly, it should be performed by a vet, as it is a highly specialised procedure requiring extreme precision.
Esta historia es de la edición 19 August 2016 de Farmer's Weekly.
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Esta historia es de la edición 19 August 2016 de Farmer's Weekly.
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