Yorkshire semen is used for Landrace, Yorkshire, Landrace + Yorkshire sows to give birth to a farrow of healthy, equal, fast weight-gaining and high quality meat piglets…

Characteristics:

• Growing fast: ADG 1,016-1,131 kg (period of 25-100 kilos)
• Low feed conversion ratio (FCR: 1,94-2,00)
• Long body, large & well-developed thigh
• Equally large, straight, solid four legs
• Low back fat (BF measured at position P2: 0,590-0,984 cm)
• High lean percentage (> 58%)
• Beautiful red lean meat, soft lean meat, moderate fat percentage
• Large section of tenderloin muscle (≥ 36cm2)
• High ratio of ediable percentage (> 77%) [not including the head]
• Nice breasts (≥ 7 breasts x 2 rows, round, equal)
• Good production of semen, good quality of semen per time of extraction
• Healthy, free of diseases, easy to raise

Usage:

- Yorkshire semen is used for Landrace, Yorkshire, Landrace + Yorkshire sows to give fattening pig, healthy, equal, fast weight-gaining and high productivity piglets…

- Offsprings:

• Male: raised for meat
• Female: to be selected to become replacement sows

Origin:

• Yorkshire is researched, selected and developed
• Tamed and adjusted by Finnor Asia (ThaiLand)
• Breed, traded and distributed by GreenFeed – Finnor (Xuan Tay – Cam My – Dong Nai)

Instructions for use of boar semen GreenFeed (Vietnam)

Step 1: Prepare the sow before insemination

• Determine if the sow is appropriate for interbreeding at the time (the vulva shrinks a little and the greasy liquid is thicker than it was on the first days of rut, and the sow stands still and it’s ears erect when we use fingers to press its hips).
• Clean up the rump and the outer sex organ of the sow.

Step 2: Prepare insemination tools

• Disinfect insemination tools by boiling them for 15-30 mins, leave them to cool down and dry.
• Use one seminal tube for each sow.

Step 3: Prepare the semen before insemination

• Make sure the origin of the semen is reliable and trustworthy.
• If the semen is stored frozen, warm it up gradually to 35oC – 37oC before insemination by steeping it in warm water for 5 mins (check the water’s temperature by hand).

Step 4: Carry out the insemination according to technical instructions

• If possible, let a boar stand in front of the sow to stimulate her before insemnination.
• The person who carries out the insemination must get his hands well cleaned.
• Put a small quantity of semen into the catheter (to avoid wounds to tunica mucosa) and on the sow’s nose (to stimulate the sow).
• Gently insert the catheter into the sow’s vulva, avoid causing any wounds, turn it anticlockwise until it feels like being stopped, keep turning it and there will be a feeling that it goes through a narrow slit (it is the womb) then start injecting the semen.
• Do the injection gently and slowly and at the same time stimulate the sow’s clitoris. If the sow won’t stand still, stop the injection.
• It takes 5-10 mins to inject a sow. After pulling out the catheter, slap the sow’s hip so that the cervix closes and prevent “back flow” of semen.
• Make a detailed record: No of the sow’s and the boar’s ears, insemination day, level of excitement.

Note:

• The semen is stored at 17oC, used for 48 hrs after opening, recommended to use during the day if conditions for preservation are not sufficient.
• Recommended to inject 2 doses of semen into 1 sow in the morning and afternoon of the day or in the morning and the next morning.
• Try not to disturb the sow at least for 1 month after insemination.