Mathematic model for evaluating fertility of the Large White, and establishment method thereof

A technology for fertilization ability and large white boars, applied in the direction of electronic digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to accurately evaluate the fertilization ability of boars, and achieve the effect of reliable coefficient and prediction accuracy

CN105046083AActive Publication Date: 2015-11-11SOUTH CHINA AGRI UNIV
0 Cites 2 Cited by

Patent Information

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

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a mathematic model for evaluating the fertility of the Large White, and an establishment method thereof. The establishment method of the mathematic model comprises the following steps: carrying out data description on a prediction variable of a Large White data sample; carrying out system clustering, dividing the Large White of different fertility levels into a Large White group with the high fertility and the Large White group with the low fertility according to sample data relevant to the fertility of Large White sperm; and carrying out discriminant analysis and Logistic regression analysis after clustering is carried out to generate a specific mathematic function. The mathematic model established by the invention has a reliable coefficient and a reliable prediction accurate rate, can provide a function model suitable for Guangdong province boar farms to evaluate the fertility of the in-service Large White, can be taken as a basis of evaluating the fertility of the Large White and has an important meaning for reducing a gradient change interval of the fertility of the Large White and accurately predicting the fertility of the Large White.
Need to check novelty before this filing date? Find Prior Art

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 large white 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 m...

Examples

Embodiment 1

[0039] Example 1 A Method for Establishing a Mathematical Model of Large White Boar's Fertilization Ability

[0040] see figure 1 , which is the technical roadmap for establishing the mathematical model of the large white boar's fertilization ability in this embodiment, the method for establishing the mathematical model of the large white boar's fertilization ability in 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, ...