Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market
The objective of this study was to estimate the genetic parameters of litter size and piglet weight from farrowing to weaning in KHAPS Black sows. The genetic parameters investigated were the direct (h<sup>2</sup><sub>d</sub>), maternal (h<sup>2</sup><sub>m&...
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MDPI AG
2022-11-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/12/23/3295 |
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| author | Hsiu-Lan Lee Mu-Yao Lin Han-Sheng Wang Chin-Bin Hsu Cheng-Yung Lin Shen-Chang Chang Perng-Chih Shen Hsiu-Luan Chang |
| author_facet | Hsiu-Lan Lee Mu-Yao Lin Han-Sheng Wang Chin-Bin Hsu Cheng-Yung Lin Shen-Chang Chang Perng-Chih Shen Hsiu-Luan Chang |
| author_sort | Hsiu-Lan Lee |
| collection | DOAJ |
| description | The objective of this study was to estimate the genetic parameters of litter size and piglet weight from farrowing to weaning in KHAPS Black sows. The genetic parameters investigated were the direct (h<sup>2</sup><sub>d</sub>), maternal (h<sup>2</sup><sub>m</sub>), realized (h<sup>2</sup><sub>r</sub>), and total (h<sup>2</sup><sub>T</sub>) heritability, as well as correlations (r<sub>d</sub>, r<sub>m</sub>, and r<sub>dm</sub>) within and between traits. The analyses were performed using single- and three-trait animal models with and without maternal genetic effects. In the three-trait model with maternal genetic effect, all estimates of h<sup>2</sup><sub>d</sub> and h<sup>2</sup><sub>m</sub> were significantly different from zero except the h<sup>2</sup><sub>d</sub> of mean birth weight. Positive values of r<sub>d</sub> and r<sub>m</sub> between traits were observed as expected in the range of 0.322–1.000. Negative values of r<sub>dm</sub> were found within and between traits and were less associated with mean piglet weight traits than litter size traits. Estimates of h<sup>2</sup><sub>T</sub> were consistently larger than those of h<sup>2</sup><sub>r</sub> in both the single- and three-trait model analyses. In addition, the three-trait model can take into account the association between the traits, so the estimates are more accurate with smaller SEs. In conclusion, maternal genetic effects were not negligible in this study, and thus, a multiple-trait animal model with maternal genetic effects and full pedigree is recommended to assist future pig breeding decisions in this new breed. |
| first_indexed | 2024-03-09T17:55:23Z |
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| id | doaj.art-8b0c28143d6f450fbc990e1d806df172 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-09T17:55:23Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
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| series | Animals |
| spelling | doaj.art-8b0c28143d6f450fbc990e1d806df1722023-11-24T10:24:46ZengMDPI AGAnimals2076-26152022-11-011223329510.3390/ani12233295Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog MarketHsiu-Lan Lee0Mu-Yao Lin1Han-Sheng Wang2Chin-Bin Hsu3Cheng-Yung Lin4Shen-Chang Chang5Perng-Chih Shen6Hsiu-Luan Chang7Animal Industry Division, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, TaiwanFormosan Farmers Association for Swine Improvement, Taipei 24242, TaiwanTaitung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Executive Yuan, Taitung 95444, TaiwanNutrition Division, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, TaiwanAnimal Industry Division, Livestock Research Institute, Council of Agriculture, Executive Yuan, Tainan 71246, TaiwanKaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Executive Yuan, Pingtung 91247, TaiwanDepartment of Animal Science, National Pingtung University of Science and Technology, Pingtung 91201, TaiwanDepartment of Animal Science, National Pingtung University of Science and Technology, Pingtung 91201, TaiwanThe objective of this study was to estimate the genetic parameters of litter size and piglet weight from farrowing to weaning in KHAPS Black sows. The genetic parameters investigated were the direct (h<sup>2</sup><sub>d</sub>), maternal (h<sup>2</sup><sub>m</sub>), realized (h<sup>2</sup><sub>r</sub>), and total (h<sup>2</sup><sub>T</sub>) heritability, as well as correlations (r<sub>d</sub>, r<sub>m</sub>, and r<sub>dm</sub>) within and between traits. The analyses were performed using single- and three-trait animal models with and without maternal genetic effects. In the three-trait model with maternal genetic effect, all estimates of h<sup>2</sup><sub>d</sub> and h<sup>2</sup><sub>m</sub> were significantly different from zero except the h<sup>2</sup><sub>d</sub> of mean birth weight. Positive values of r<sub>d</sub> and r<sub>m</sub> between traits were observed as expected in the range of 0.322–1.000. Negative values of r<sub>dm</sub> were found within and between traits and were less associated with mean piglet weight traits than litter size traits. Estimates of h<sup>2</sup><sub>T</sub> were consistently larger than those of h<sup>2</sup><sub>r</sub> in both the single- and three-trait model analyses. In addition, the three-trait model can take into account the association between the traits, so the estimates are more accurate with smaller SEs. In conclusion, maternal genetic effects were not negligible in this study, and thus, a multiple-trait animal model with maternal genetic effects and full pedigree is recommended to assist future pig breeding decisions in this new breed.https://www.mdpi.com/2076-2615/12/23/3295animal modelgenetic parameterpiglet performancematernal genetic effectssow |
| spellingShingle | Hsiu-Lan Lee Mu-Yao Lin Han-Sheng Wang Chin-Bin Hsu Cheng-Yung Lin Shen-Chang Chang Perng-Chih Shen Hsiu-Luan Chang Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market Animals animal model genetic parameter piglet performance maternal genetic effects sow |
| title | Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market |
| title_full | Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market |
| title_fullStr | Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market |
| title_full_unstemmed | Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market |
| title_short | Direct–Maternal Genetic Parameters for Litter Size and Body Weight of Piglets of a New Black Breed for the Taiwan Black Hog Market |
| title_sort | direct maternal genetic parameters for litter size and body weight of piglets of a new black breed for the taiwan black hog market |
| topic | animal model genetic parameter piglet performance maternal genetic effects sow |
| url | https://www.mdpi.com/2076-2615/12/23/3295 |
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