The effects of vitamin A supplementation during late-stage pregnancy on muscle tissue development, birth traits, and growth performance in postnatal Korean native calves
| Autor: | Yong Ho Jo, Dong Qiao Peng, Won Seob Kim, Seong Jin Kim, Na Yeon Kim, Sung Hak Kim, Jalil Ghassemi Nejad, Jae Sung Lee, Hong Gu Lee |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 33, Iss 5, Pp 742-752 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1011-2367 1976-5517 |
| DOI: | 10.5713/ajas.19.0413 |
| Popis: | Objective This study investigated the effects of vitamin A (VA) supplementation during late-stage pregnancy on longissimus dorsi muscle tissue development, birth traits, and growth performance of postnatal Korean native calves. Methods In the preliminary experiment, twenty-six pregnant cattle (initial body weight [BW] = 319 kg (standard deviation [SD] = 30.1; 1st parity) were randomly assigned to the control and treatment groups. The treatment group received VA supplementation at 24,000 IU/d from gestational day 225 until delivery. In the main experiment, twelve pregnant cattle (initial BW = 317 kg [SD = 31.3]; 1st parity) were treated with VA supplementation at 24,000 IU/d (gestational days 150 to 225) and at 78,000 IU/d (gestational day 225 until delivery). Serum VA levels were analyzed in pregnant cattle, and the growth performance, gene expression, and serum VA levels were analyzed in the offspring. Results Serum VA levels in pregnant cattle decreased the late gestation in both experiments (p |
| Databáze: | Directory of Open Access Journals |
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