Analysis of Return to Service Data

Garth Pig Stockmanship Standards

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Major Reasons for Reductions in Farrowing Rate
Reason	Farm Actual	%	Target %
Regular returns 18-24 days post-service			8
Irregular return any other time post-service			2
Total Returns			10
Not In Pigs (>80 days post-service)			0 - 0.5
Abortion			0.5 - 1
Culls (pregnant)			1
Deaths (pregnant)			1
Farrowing rate			87%

Analysis of Days between Service and Return
Days	Reasons For Return
0 - 17	Nymphomaniac, Not in season initially.
18 - 24	Oestrus.
25 - 35	Embryonic death, Not in season initially.
36 - 48	Missed oestrus.
49 - 80	Pseudo pregnancy, Abortion, Combination of above.
80+	Combinations of above.

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Extracted from Garth Pig Stockmanship Standards*
written by Dr John Carr.

You can buy this book HERE
*Published by 5M Enterprises Limited