Mathematic model for evaluating fertilization capacities of duroc boars and establishment model thereof

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

CN105095690AActive Publication Date: 2015-11-25SOUTH CHINA AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-11-25

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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.
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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 ...

Examples

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), and number of born alive (NBA). , Number of dead piglets (NDP), number of healthy piglets (newborn piglets weighing more than 1.00kg) (Number of qualified piglets, NQP), number of deformed piglets (Number of abnormal piglets, NAP), number of stillborn piglets (NSP) , Weak piglets born in litter (Number of weak piglets, NWP), Number of mummified...