Case Study on the Genetic Parameters and Possibilities of Selecting Gilts for Traits Monitored in the Performance Test.

IF 2 2区 农林科学 Q2 VETERINARY SCIENCES
Nenad Stojiljković, Čedomir Radović, Marija Gogić, Vladimir Živković, Aleksandra Petrović, Krstina Zeljić Stojiljković, Dubravko Škorput
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Abstract

This research examined the phenotypic and genotypic variability of traits assessed in the gilt performance test and their subsequent impact on gilt selection. The traits evaluated in the gilt performance test were analyzed on two pig farms over a period of 3 consecutive years. A total of 3664 gilts were included in the research. At the end of the test, body weight, backfat thickness (BF1 and BF2), and longissimus dorsi muscle depth (MLD) were measured using an ultrasound device. The following breeds were evaluated on the farms: Landrace (L)-1981 gilts, Large White (LW)-1344 gilts, and Duroc (D)-339 gilts. In the analyzed population, direct genetic effects accounted for 0.2647 of the total variation in age at the end of the test (AET). Heritability coefficients of 0.37 for BF1 and 0.35 for BF2 indicate that these traits are highly heritable in the studied population. On the other hand, the heritability coefficient for the depth of MLD, which is 0.23, places this trait in the group of medium heritable traits. High heritability coefficients of these traits indicate great potential for genetic improvement through selection. The use of well-designed selection programs aimed at these traits can significantly accelerate the genetic improvement of the population and have an impact on the economic profit of pork production.

母猪生产性能试验监测性状的遗传参数和选择可能性的实例研究。
本研究考察了后备母猪生产性能测试中评估的性状的表型和基因型变异性及其对后备母猪选择的影响。在两个猪场连续3年对后备母猪生产性能试验评价的性状进行了分析。共纳入3664头后备母猪。试验结束时,用超声仪测量大鼠体重、背部脂肪厚度(BF1和BF2)和背最长肌深度(MLD)。在养殖场对以下品种进行了评价:长白(L)-1981母猪、大白(LW)-1344母猪和杜洛克(D)-339母猪。在分析的人群中,直接遗传效应占测试结束时年龄(AET)总变异的0.2647。BF1和BF2的遗传力系数分别为0.37和0.35,表明这些性状在研究群体中具有较高的遗传力。另一方面,MLD深度遗传系数为0.23,属于中等遗传性状。这些性状遗传力系数高,表明通过选择进行遗传改良的潜力很大。采用针对这些性状的精心设计的选择程序可以显著加快种群的遗传改良,并对猪肉生产的经济利润产生影响。
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来源期刊
Veterinary Sciences
Veterinary Sciences VETERINARY SCIENCES-
CiteScore
2.90
自引率
8.30%
发文量
612
审稿时长
6 weeks
期刊介绍: Veterinary Sciences is an international and interdisciplinary scholarly open access journal. It publishes original that are relevant to any field of veterinary sciences, including prevention, diagnosis and treatment of disease, disorder and injury in animals. This journal covers almost all topics related to animal health and veterinary medicine. Research fields of interest include but are not limited to: anaesthesiology anatomy bacteriology biochemistry cardiology dentistry dermatology embryology endocrinology epidemiology genetics histology immunology microbiology molecular biology mycology neurobiology oncology ophthalmology parasitology pathology pharmacology physiology radiology surgery theriogenology toxicology virology.
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