Genetic Parameters of Reproductive and Meat Quality Traits in Korean Berkshire Pigs

Abstract

Genetic parameters of Berkshire pigs for reproduction, carcass and meat quality traits were estimated using the records from a breeding farm in Korea. For reproduction traits, 2,457 records of the total number of piglets born (TNB) and the number of piglets born alive (NBA) from 781 sows and 53 sires were used. For two carcass traits which are carcass weight (CW) and backfat thickness (BF) and for 10 meat quality traits which are pH value after 45 minutes (pH45m), pH value after 24 hours (pH24h), lightness in meat color (LMC), redness in meat color (RMC), yellowness in meat color (YMC), moisture holding capacity (MHC), drip loss (DL), cooking loss (CL), fat content (FC), and shear force value (SH), 1,942 pig records were used to estimate genetic parameters. The genetic parameters for each trait were estimated using VCE program with animal model. Heritability estimates for reproduction traits TNB and NBA were 0.07 and 0.06, respectively, for carcass traits CW and BF were 0.37 and 0.57, respectively and for meat traits pH45m, pH24h, LMC, RMC, YMC, MHC, DL, CL, FC, and SH were 0.48, 0.15, 0.19, 0.36, 0.28, 0.21, 0.33, 0.45, 0.43, and 0.39, respectively. The estimate for genetic correlation coefficient between CW and BF was 0.27. The Genetic correlation between pH24h and meat color traits were in the range of −0.51 to −0.33 and between pH24h and DL and SH were −0.41 and −0.32, respectively. The estimates for genetic correlation coefficients between reproductive and meat quality traits were very low or zero. However, the estimates for genetic correlation coefficients between reproductive traits and drip and cooking loss were in the range of 0.12 to 0.17 and −0.14 to −0.12, respectively. As the estimated heritability of meat quality traits showed medium to high heritability, these traits may be applicable for the genetic improvement by continuous measurement. However, since some of the meat quality traits showed negative genetic correlations with carcass traits, an appropriate breeding scheme is required that carefully considers the complexity of genetic parameters and applicability of data.

Validation of selection accuracy for the total number of piglets born in Landrace pigs using genomic selection

“…It has been reported that the heritability estimates of total number of piglets born in Yorkshire, Duroc, and Berkshire pigs were 0.10, 0.09, and 0.07, respectively [10,11]. The heritability for total number of piglets born could vary due to different genetic characteristics of the population.…”

Environmental Effects and Repeatability Estimates on Semen Quality in Ongole Grade Bulls

“…Nilai ripitabilitas motilitas spermatozoa ini lebih rendah dari hasil riset Karoui et al (2011), Boujenane & Boussaq (2013) dan Prihatin et al (2017), yaitu masing-masing sebesar 0,35; 0,25; dan 0,57. Lee et al (2015) menyatakan bahwa nilai ripitabilitas yang bervariasi dapat disebabkan oleh lama studi, jumlah data yang dianalisis, dan model yang digunakan.…”

Identification of Differentially Expressed Genes Associated with Litter Size in Berkshire Pig Placenta

“…Some evidence also suggests that the Chinese Meishan may have improved uterine capacity and placental efficiency [ 14 ]. However, the reproductive rate of Berkshire pigs is lower than that of other pig breeds, although the production of Berkshire pigs has been increasing recently [ 15 ]. Improvement in the litter size of Berkshire pigs is essential for Berkshire pig breeders.…”