Breeding method and device for improving number of weaned piglets and medium

A technology for the number of weaned piglets and piglets is applied in the field of pig breeding, which can solve the problems of the convergence of genetic trends and the poor effect of the number of weaned piglets.

Inactive Publication Date: 2019-01-15
WENS FOOD GRP CO LTD
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  • Claims
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Problems solved by technology

[0003] The current selection index composition commonly used in pig farms has the following deficiencies: First, the total litter size and the number of live pigs or healthy piglets are both strongly genetically correlated, and the genetic trends are converging; There is a strong genetic correlation with "null piglet traits" such as weak piglet size and deformed piglet size, that is, the selection of total litter size and live piglet size is not effective in increasing the number of weaned piglets

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  • Breeding method and device for improving number of weaned piglets and medium
  • Breeding method and device for improving number of weaned piglets and medium
  • Breeding method and device for improving number of weaned piglets and medium

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a breeding method and device for improving the number of weaned piglets and a medium, and relates to the technical field of pig breeding. The breeding method comprises the steps of determining evaluation standards suitable for a healthy piglet number character; obtaining the healthy piglet rate according to the healthy piglet number and the total number born; respectively determining estimated breeding values of the healthy piglet number and the healthy piglet rate, and carrying out standardization; respectively setting weighting weighted values of the healthy piglet number breeding value and the healthy piglet rate breeding value, taking the weighted sum of the standardized healthy piglet number breeding value and the standardized healthy piglet rate breeding valueas a selection index of a litter size character, and selecting maternal pig litter size characters according to the selection index. The breeding method explores the genetic correlation influences imposed by different birth weight selection standards on the piglet number and other breeding characters, simultaneously takes the healthy piglet number and the healthy piglet rate into breeding character selection indexes, and has the effects of reducing invalid piglet number, improving the valid piglet number and finally improving the number of weaned piglets.

Description

technical field [0001] The invention relates to the technical field of pig breeding, in particular to a breeding method, device and medium for increasing the number of weaned piglets. Background technique [0002] In the breeding of sow pigs mainly represented by Large White pigs, the traits collected by breeding farms generally include total litter size, number of live piglets, number of weak piglets, birth weight, number of deformed piglets, number of stillbirths, number of mummies and number of weaned piglets etc., a small number of core breeding farms also collect the number of healthy piglets. At present, the selection index for litter size traits of female pigs is generally composed of two traits: total litter size, live piglet size or healthy piglet size, and other traits are only used as production indicators. [0003] The current selection index composition commonly used in pig farms has the following deficiencies: First, the total litter size and the number of liv...

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 吴珍芳谈成叶健王青来李娅兰
Owner WENS FOOD GRP CO LTD
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