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Evaluating method of sow comprehensive fertility and application thereof to pig breeding

An evaluation method and fecundity technology, which is applied in the field of comprehensive evaluation of sow fecundity and offspring production performance, can solve the problem of accelerating the progress of population genetics and phenotype, deviation of evaluation results, and sows that do not take into account the uniformity of piglet birth weight Problems such as lactation ability, to achieve the effect of maintaining a high level of reproductive performance and lactation performance, improving production levels and profitability, and accelerating genetic and phenotypic progress

Active Publication Date: 2019-03-19
WUHAN TIANZHONG ANIMAL HUSBANDRY CO LTD
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Problems solved by technology

The evaluation of comprehensive fecundity of sows plays an extremely important auxiliary role in maintaining the high-level reproductive performance of sows in the core group and accelerating the genetic and phenotypic progress of the population. However, the existing methods for evaluating sow fecundity do not take into account the Weight uniformity and lactating ability of sows lead to deviations in evaluation results when evaluating sows' comprehensive fertility, and some sows with low birth weight uniformity of piglets were not eliminated in time, resulting in piglets with higher The mortality rate increases the production cost of the pig farm, which is not conducive to improving the overall production level of the pig farm, and is not conducive to accelerating the genetic and phenotypic progress of the population

Method used

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  • Evaluating method of sow comprehensive fertility and application thereof to pig breeding
  • Evaluating method of sow comprehensive fertility and application thereof to pig breeding
  • Evaluating method of sow comprehensive fertility and application thereof to pig breeding

Examples

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Embodiment 1

[0038] In the pig farm, the growth performance of Large White pigs was measured, and the total litter size and birth weight of the large white sows were collected, and the lactation ability level of each postpartum sow was scored. After collecting the data, the age and backfat thickness were corrected, and the breeding values ​​of age at 100kg body weight correction, backfat thickness at 100kg body weight correction, total litter size and uniformity of piglet birth weight were calculated. According to the breeding goals and actual conditions of the pig farm, each trait is weighted according to a certain weight, and finally a comprehensive selection index (new female line index, NDLI) is obtained. Finally, select gilts (0-parity sows) according to the new dam line index, number of teats and appearance standards, and eliminate multiparous sows (≧1 parity sow) according to lactation performance score, total litter size and new dam line index ). The specific method is as follows:...

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Abstract

The invention discloses an evaluating method of sow comprehensive fertility and application thereof to pig breeding. The method includes the steps of introducing new maternal line indexes to evaluatesow fertility, wherein the new maternal line indexes include weights of the corrected day age of sows reaching the weight of 100 kg being 30%, the corrected back fat thickness of the sows reaching theweight of 100 kg being 30%, the total farrowing number being 30% and the piglet birth weight uniformity being 10%; weeding out all the sows with the new maternal line indexes lower than 100 for the backup sows, weeding out the sows with low comprehensive fertility according to the number of nipples and appearance standard, and evaluating the comprehensive fertility of the sows according to the total farrowing number, the milkability and the new maternal line indexes for the multiparous sows. By means of the method, the sows with the poor fertility and milkability can be weeded out in time, the high-level fertility and milkability of the core herd of sows are kept, the genetic progress and phenotypic progress of herds are accelerated, and the production level and earnings level of a breeding farm and a radiation propagation sow farm are improved.

Description

technical field [0001] The invention relates to the technical field of sow breeding and population selection, in particular to a comprehensive evaluation method for sow fecundity and offspring production performance and its application in pig breeding and production. Background technique [0002] At present, in the genetic evaluation of breeding pigs in my country, the comprehensive selection index is mainly used, that is, the paternal index and the maternal index. Among them, the large white pig is selected and retained, and the female line index (Dam Line Index, DLI) is used. In order to improve the growth and reproductive performance, the maternity index includes the three traits of up to 100kg weight-adjusted age (AGE), up to 100kg weight-adjusted backfat thickness (BF) and total litter size (TNB). In recent years, after the research of the expert group of the National Breeding Pig Genetic Evaluation Center and the opinions of various pig enterprises, the weighting regula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02G06Q10/06G06Q50/02
CPCA01K67/02G06Q10/06393G06Q50/02
Inventor 赵祖凯杨华威刘剑锋周磊杜房房曾新斌方铎王晔
Owner WUHAN TIANZHONG ANIMAL HUSBANDRY CO LTD
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