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A Mathematical Model for Assessing Duroc Boar Fertility and Its Establishment

A technology of fertilization ability and mathematical model, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inability to accurately assess boar fertilization ability, and achieve the effect of reliable coefficient and prediction accuracy.

Active Publication Date: 2018-07-10
SOUTH CHINA AGRI UNIV
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Problems solved by technology

The above data show that the current conventional semen quality testing methods are insufficient and cannot accurately assess the fertilization ability of boars

Method used

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  • A Mathematical Model for Assessing Duroc Boar Fertility and Its Establishment
  • A Mathematical Model for Assessing Duroc Boar Fertility and Its Establishment
  • A Mathematical Model for Assessing Duroc Boar Fertility and Its Establishment

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Embodiment 1

[0039] Embodiment 1 A method for establishing a mathematical model of Duroc boar's fertilization ability

[0040] see figure 1 , is the technical roadmap of establishing the mathematical model of the Duroc boar's fertilization ability in this embodiment, and the establishment method of the Duroc boar's fertilization ability mathematical model of the present embodiment includes the following specific steps:

[0041] 1) Selection of predictor variables

[0042] 18 variables that can reflect the fertilization ability of boars were selected as the predictive variables of the analysis model, including farrowing rate (FR), litter size (LS), litter size (Number of bornalive (NBA), Number of dead piglets (NDP), Healthy piglets (Number of qualified piglets, NQP), Number of abnormal piglets , NAP), Number of stillborn piglets (NSP), Number of weak piglets (NWP), Number of mummified piglets (NMP) ), piglet birth weight (Average piglet weight, APW), number of piglets per parity contrib...

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Abstract

The invention discloses a mathematic model for evaluating fertilization capacities of duroc boars and an establishment model thereof. The establishment model comprises following steps: performing data description of predictive variables of data samples for duroc boars; carrying out hierarchical clustering operation, dividing duroc boars with different fertilization capacities into a boar group with high fertilization capacity and a boar group with low fertilization capacity according to sample data associated with sperm fertilization capacities of boars; and making discriminant analyses and Logistic regression analyses after clustering in order to generate concrete mathematical functions. The mathematic model for evaluating fertilization capacities of duroc boars and the establishment model thereof have following beneficial effects: coefficients and prediction accuracy of the mathematic model are reliable; a function model suitable for evaluating fertilization capacities of existing duroc boars in stud boar farms of Guangdong province is provided and can be the basis on evaluation of fertilization capacities of duroc boars; and great importance is attached to aspects such as decrease in the range of gradient variation for fertilization capacities of boars and accurate prediction of fertilization capability level of boars.

Description

technical field [0001] The invention belongs to the technical field of animal genetics, breeding and reproduction. More specifically, the invention relates to a mathematical model for evaluating the fertilization ability of Duroc boars and a method for establishing the same. Background technique [0002] Production indicators such as farrowing rate, litter size, litter live piglets, and piglets per parity contribution of participating sows are the ultimate standards to measure the fertilization ability of boars, and the long-term actual pig production mainly depends on boar semen quality was assessed. In production, the quality of boar semen is mainly judged by visual inspection and microscopic inspection. Among them, the naked eye inspection mainly observes the ejaculate volume, semen color, smell, pH and other indicators. The single ejaculate volume of boars is 200-300mL, which is off-white or milky white and has a special fishy smell. The pH value is 6.9-7.5; It mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/24G06F17/50A01K67/02
Inventor 张守全陈志林张童卫恒习李莉
Owner SOUTH CHINA AGRI UNIV
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