Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation
Grazing endophyte-infected, toxic tall fescue reduces cow/calf production; therefore, this study examines alternate strategies such as use of novel endophyte fescue varieties during late gestation and early lactation or genetic selection of resistant cows. Pregnant cows (n = 75) were randomly assign...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-03-01
|
| Series: | Toxins |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-6651/13/3/195 |
| _version_ | 1797542146851471360 |
|---|---|
| author | Sarah A. Wilbanks Susan Maggie Justice Thomas West James L. Klotz John G. Andrae Susan K. Duckett |
| author_facet | Sarah A. Wilbanks Susan Maggie Justice Thomas West James L. Klotz John G. Andrae Susan K. Duckett |
| author_sort | Sarah A. Wilbanks |
| collection | DOAJ |
| description | Grazing endophyte-infected, toxic tall fescue reduces cow/calf production; therefore, this study examines alternate strategies such as use of novel endophyte fescue varieties during late gestation and early lactation or genetic selection of resistant cows. Pregnant cows (n = 75) were randomly assigned to fescue endophyte type: 1) endophyte-infected ergot alkaloid producing tall fescue (E+) or 2) novel endophyte-infected, non-toxic tall fescue (NOV) within maternal (A|A, n = 38 and G|G, n = 37) <i>DRD2</i> genotype to examine changes in cow/calf performance and milk production during late gestation and early lactation. Grazing E+ fescue pastures during late gestation reduced cow body weight gain but did not alter calf birth weight compared to NOV. Milk production and calf ADG during the first 30 day of lactation were lower for E+ than NOV. The calving rate was reduced, but not calving interval for E+ cows. The adjusted 205-day weight of calves was lower in those grazing E+ with their dams compared to NOV. There were no interactions between <i>DRD2</i> genotype and fescue endophyte type indicating that genotype was not associated with response to E+ fescue in this study. Overall, grazing NOV tall fescue pastures rather than E+ during critical stages of production improved cow gain during late gestation, calving rate, early milk production and calf growth. |
| first_indexed | 2024-03-10T13:25:33Z |
| format | Article |
| id | doaj.art-d2a53acff53c4b6b8a4be53b7e05cae9 |
| institution | Directory Open Access Journal |
| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-03-10T13:25:33Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxins |
| spelling | doaj.art-d2a53acff53c4b6b8a4be53b7e05cae92023-11-21T09:42:30ZengMDPI AGToxins2072-66512021-03-0113319510.3390/toxins13030195Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early LactationSarah A. Wilbanks0Susan Maggie Justice1Thomas West2James L. Klotz3John G. Andrae4Susan K. Duckett5Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USADepartment of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USADepartment of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USAUSDA-ARS Forage Production Research Unit, Lexington, KY 40506, USADepartment of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634, USADepartment of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USAGrazing endophyte-infected, toxic tall fescue reduces cow/calf production; therefore, this study examines alternate strategies such as use of novel endophyte fescue varieties during late gestation and early lactation or genetic selection of resistant cows. Pregnant cows (n = 75) were randomly assigned to fescue endophyte type: 1) endophyte-infected ergot alkaloid producing tall fescue (E+) or 2) novel endophyte-infected, non-toxic tall fescue (NOV) within maternal (A|A, n = 38 and G|G, n = 37) <i>DRD2</i> genotype to examine changes in cow/calf performance and milk production during late gestation and early lactation. Grazing E+ fescue pastures during late gestation reduced cow body weight gain but did not alter calf birth weight compared to NOV. Milk production and calf ADG during the first 30 day of lactation were lower for E+ than NOV. The calving rate was reduced, but not calving interval for E+ cows. The adjusted 205-day weight of calves was lower in those grazing E+ with their dams compared to NOV. There were no interactions between <i>DRD2</i> genotype and fescue endophyte type indicating that genotype was not associated with response to E+ fescue in this study. Overall, grazing NOV tall fescue pastures rather than E+ during critical stages of production improved cow gain during late gestation, calving rate, early milk production and calf growth.https://www.mdpi.com/2072-6651/13/3/195fescue toxicosissingle nucleotide polymorphismmilk productioncalf growth |
| spellingShingle | Sarah A. Wilbanks Susan Maggie Justice Thomas West James L. Klotz John G. Andrae Susan K. Duckett Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation Toxins fescue toxicosis single nucleotide polymorphism milk production calf growth |
| title | Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation |
| title_full | Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation |
| title_fullStr | Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation |
| title_full_unstemmed | Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation |
| title_short | Effects of Tall Fescue Endophyte Type and Dopamine Receptor D2 Genotype on Cow-Calf Performance during Late Gestation and Early Lactation |
| title_sort | effects of tall fescue endophyte type and dopamine receptor d2 genotype on cow calf performance during late gestation and early lactation |
| topic | fescue toxicosis single nucleotide polymorphism milk production calf growth |
| url | https://www.mdpi.com/2072-6651/13/3/195 |
| work_keys_str_mv | AT sarahawilbanks effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation AT susanmaggiejustice effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation AT thomaswest effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation AT jameslklotz effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation AT johngandrae effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation AT susankduckett effectsoftallfescueendophytetypeanddopaminereceptord2genotypeoncowcalfperformanceduringlategestationandearlylactation |