SVIBOR - Project code: 4-05-171

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 4-05-171


GENETIC AND FENOTIPE PARAMETERS OF FERTILITY AND GROWTH CHARACTERISTICS OF SWINE


Main researcher: BALENOVIĆ, TOMISLAV (1771)



Assistants
Type of research: applied
Duration from: 10/01/92. to 10/01/97.

Papers on project (total): 11
Papers on project quoted in Current Contents: 1
Institution name: Veterinarski fakultet, Zagreb (53)
Department/Institute: Department of Animal Breeding and Husbandry
Address: Heinzelova 55
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0) O1 2390 222
Fax: 385 (0) 01 214 697

Summary: The fertility of gilts and sows showing by the number of farrowed and especially the number of weaned pigs per sow, fluctuates between different swine breeds and strains, alterating as well regarding the successiveness of farrowing. The influence of both parents, the environment, the treatment to which the animals are subjected, as well as nutrition are very significant for the expression of distinctive traits of fertility and surviving of swine, together with the interaction between these factors. The characteristic of growth is defined as mutually binded increase in body weight through limited time periods. The growth curve in its first stage, the stage of self-acceleration, shows a continuously growing part in which the product is forming, while the second stage, the stage of self-detaining, shows a slowing down of the process as much as the products of process are accumulating. In swine populations with mostly uniform strain structure and both sexes equaly presented, is very important to be aware of the potential growth possibilities of swine in every stage of their life.

Keywords: Boar, gilt, hog, piglet, litter, farrowing, weaned, rearing period, breeding, heritability, genetic and phenotipic correlations, growth, pig

Research goals: The researches are aiming to establish the distinctive features of fertility, survival (together with the structure of losses during the production process), and the speed of swine growth. The researches include: the strain, number of litters, age of gilts and sows at first mating and farrowing, seasonal influence on surviving of piglets, parental influence on litter size, constitution and vitality of piglets, growth intensity at different age of swine, housing and keeping influence, invironmental influence. The showing of growth is examined and food consumption of pigs at the age in which the bigest losses were observed, that is from weaning to about 12 weeks of age. Showing of growth is examined and food consumption at the final growth stage of swine, namely up to the use for breeding. It is necessary to examine the quality of swine considering the meatfullnes at slaughtering line, as well as to determine the meatfullnes of gilts and young boars, as one of criterions of selectioning swine for breeding.


COOPERATION - PROJECTS


  1. Name of project: FG (YU) CRO 933 Monitoring of swine pathology II.
    Name of institution: Deputy administrator, Veterinary services, US Department of Agriculture
    City: 96464 - Washington,D.C., USA

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Last update: 10/10/95
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