@article{williams_pickworth_weaver_poole_2024, title={136 Evaluation of internal parasite burden in grazing beef cattle in North Carolina over a production lifecycle}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.079}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Williams, Katherine G. and Pickworth, Carrie L. and Weaver, Andrew R. and Poole, Daniel H.}, year={2024}, month={Mar}, pages={67–68} }
 @article{bentley_weaver_wright_greiner_bowdridge_2024, title={64 The effect of postweaning fecal egg count EBV on colostrum IgG concentration and color in Katahdin dams}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.104}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Bentley, Kelsey and Weaver, Andrew R. and Wright, Lee L. and Greiner, Scott P. and Bowdridge, Scott A.}, year={2024}, month={Mar}, pages={92–92} }
 @article{rogers_poore_shaeffer_weaver_siciliano_harmon_2024, title={Amazing Grazing webinar and workshop series improves producers understanding of pasture ecology}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.010}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Rogers, Johnny R. and Poore, Matt H. and Shaeffer, April D. and Weaver, Andrew R. and Siciliano, Paul and Harmon, Deidre D.}, year={2024}, month={Mar}, pages={7–8} }
 @article{geniac_wright_greiner_bowdridge_weaver_2024, title={Effect of copper oxide wire particles on parasitism and growth in Katahdin lambs divergently selected for fecal egg count estimated breeding value}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.101}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Geniac, Victoria and Wright, Lee L. and Greiner, Scott P. and Bowdridge, Scott and Weaver, Andrew R.}, year={2024}, month={Mar}, pages={89–90} }
 @article{weaver_holcomb_smith_brown_holcomb_rogers_2024, title={Effect of grazing native warm season grasses on parasitism and growth in weaned Katahdin lambs}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.108}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Weaver, Andrew R. and Holcomb, Lee and Smith, Jason and Brown, Allison and Holcomb, Der and Rogers, Johnny R.}, year={2024}, month={Mar}, pages={95–96} }
 @article{valliere_wright_weaver_bowdridge_greiner_2024, title={Evaluation of feed efficiency and feeding behavior in Katahdin lambs housed in a Vytelle Sense system}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.098}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Valliere, Nicole K. and Wright, Lee L. and Weaver, Andrew R. and Bowdridge, Scott A. and Greiner, Scott P.}, year={2024}, month={Mar}, pages={87–88} }
 @article{poore_shaeffer_rogers_weaver_siciliano_harmon_2024, title={Pastureland Ecology 1 provides hands-on training in grazing management for USDA-NRCS professionals}, volume={102}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skae019.007}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Poore, Matt H. and Shaeffer, April D. and Rogers, Johnny R. and Weaver, Andrew R. and Siciliano, Paul and Harmon, Deidre}, year={2024}, month={Mar}, pages={5–5} }
 @article{maierle_weaver_greiner_felton_bowdridge_2023, title={Evaluation of Feeding Behavior of Katahdin Lambs During <i>Haemonchus Contortous</i> Infection}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.131}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Maierle, Camren and Weaver, Andrew R. and Greiner, Scott P. and Felton, Eugene and Bowdridge, Scott L.}, year={2023}, month={May} }
 @article{valliere_wright_greiner_bowdridge_weaver_2023, title={Evaluation of Supplemental Feeding Behavior and Growth Performance in Katahdin Lambs Divergently Selected for Fecal Egg Count Estimated Breeding Value}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.128}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Valliere, Nicole K. and Wright, Donald L. and Greiner, Scott P. and Bowdridge, Scott A. and Weaver, Andrew R.}, year={2023}, month={May} }
 @article{williams_rajo_weaver_poole_pickworth_2023, title={Impact of Fescue Variety on Fecal Egg Counts in Mature Beef Cattle}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.093}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Williams, Katherine and Rajo, Edwin Benjamin and Weaver, Andrew R. and Poole, Daniel H. and Pickworth, Carrie L.}, year={2023}, month={May} }
 @article{rogers_weaver_cope_2023, title={North Carolina Small Ruminant Improvement Program Workshops Build Producer Knowledge of Important Management Techniques}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.012}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Rogers, Johnny R. and Weaver, Andrew R. and Cope, Emily}, year={2023}, month={May} }
 @article{bentley_weaver_wright_greiner_bowdridge_2023, title={Post-weaning fecal egg count estimated breeding value is associated with greater antibody production after clostridial vaccination in Katahdin lambs}, volume={229}, ISSN={["1879-0941"]}, DOI={10.1016/j.smallrumres.2023.107128}, abstractNote={Previous work demonstrated that, Katahdin lamb survivability to weaning was affected by post-weaning fecal egg count (PFEC) estimated breeding values (EBV) and favored Low-PFEC lambs. Therefore, selection for PFEC is hypothesized to improve generalized immunity beyond resistance to parasitic infection. This study aimed to compare the effect of PFEC EBV on antibody production of Katahdin lambs in response to Clostridium perfringens type C&D and tetanus toxoid (CD&T) and C. perfringens type A vaccination. Lambs were grouped by their PFEC value into Low-PFEC (PFEC less than −50), Mid-PFEC (PFEC between −50 and +50), and High-PFEC (PFEC greater than +50). Prior to weaning and continuing 5 weeks after weaning, lambs were exposed to natural helminth infection on pasture and fecal samples were collected bi-weekly. Lamb FEC corresponded to genotype (950 epg High-PFEC vs. 452 epg Low-PFEC; P = <0.0001) over the course of the experiment. Three weeks prior to weaning lambs were vaccinated for CD&T and C. perfringens type A and again four weeks later. Serum samples were taken weekly for 8 weeks. Averaged across time, there was a stepwise decrease in immunoglobin (IgG) from Low-PFEC to High-PFEC groups (905 µg/mL, 739 µg/mL, and 644 µg/mL respectively; P < 0.0001). Upon booster vaccination IgG response was higher in Low-PFEC and Mid-PFEC groups than the High-PFEC group (2246 µg/mL, 2103 µg/mL vs. 1431 µg/mL, P < 0.0001). A moderate negative correlation was found between average serum IgG and lamb PFEC EBV (r = −0.55, P < 0.0001). Interestingly when PFEC values are less than − 50 or greater than + 50 lambs produce high or low IgG respectively. Collectively these data indicate that parasite resistant Katahdin lambs generate greater antibody response to clostridial vaccination.}, journal={SMALL RUMINANT RESEARCH}, author={Bentley, Kelsey L. and Weaver, Andrew R. and Wright, Donald L. and Greiner, Scott P. and Bowdridge, Scott A.}, year={2023}, month={Dec} }
 @article{weaver_wright_greiner_2023, title={Rams Enrolled in the National Sheep Improvement Program have Improved Performance and Value in Ram Test Program.}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.122}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Weaver, Andrew R. and Wright, Donald L. and Greiner, Scott P.}, year={2023}, month={May} }
 @article{bentley_weaver_wright_greiner_bowdridge_2023, title={The Effect of Postweaning Fecal Egg Count EBV on Colostrum IgG Concentration in Katahdin Dams}, volume={101}, ISSN={["1525-3163"]}, DOI={10.1093/jas/skad068.130}, abstractNote={Abstract}, journal={JOURNAL OF ANIMAL SCIENCE}, author={Bentley, Kelsey and Weaver, Andrew R. and Wright, Donald L. and Greiner, Scott P. and Bowdridge, Scott A.}, year={2023}, month={May} }
 @article{weaver_wright_notter_zajac_bowdridge_greiner_2022, title={Evaluation of terminal sire breeds for hair sheep production systems: Forage environment}, volume={213}, ISSN={["1879-0941"]}, DOI={10.1016/j.smallrumres.2022.106739}, abstractNote={Terminal sire crossbreeding systems which improve growth performance while maintaining parasite resistance have the potential to enhance the profitability of hair sheep enterprises. Katahdin (KT, n = 5), Suffolk (SU, n = 4), and Texel (TX, n = 5) rams were randomly mated to KT ewes over three years (Y1, Y2, Y3) at the Virginia Tech Southwest Agricultural Research and Extension Center. Post-lambing until weaning (80 d), pairs were managed on fescue pasture. At weaning, lambs (n = 242) were moved to an ungrazed pasture and provided a concentrate pellet daily for a 90 d grazing trial. During this time, body weight (BW), strongylid egg count (FEC), FAMACHA score and packed cell volume (PCV) were collected every 14 d. FAMACHA score ≥ 3 was utilized as the basis for anthelmintic treatment. Post-grazing, lambs were fed to approximately 50 kg BW. Lambs were harvested at the Virginia Tech Meat Center and carcass evaluation performed 1 d post-harvest. Statistical analyses were conducted using SAS with fixed effects of sire breed. No differences existed between sire breeds for adjusted number of lambs born or number of lambs weaned. At weaning, KT-sired lambs had lower BW than terminal sired lambs (P < 0.05). During the grazing trials, lnFEC, FAMACHA and PCV varied over time (P < 0.001) with lower FAMACHA scores for KT-sired lambs than SU- and TX-sired lambs (P < 0.05). Of the terminal sire breeds, TX-sired lambs had a greater FEC at deworming and required a greater number of days before treatment in Y2 (P < 0.05). At harvest, terminal-sired lambs were heavier than KT-sired lambs (P < 0.05) in Y1 while SU-sired lambs had greater BW than TX-sired lambs (P < 0.05) in Y2. Terminal-sired lambs had greater LM area and leg scores than KT-sired lambs (P = 0.05). These results indicate the potential of terminal sires (SU- and TX-sires) to improve lamb growth and carcass merit. Texel-sired lambs had more similar parasite resistance characteristics to KT-sired lambs and may have potential as terminal sires in forage based hair sheep production systems.}, journal={SMALL RUMINANT RESEARCH}, author={Weaver, Andrew R. and Wright, Donald L. and Notter, David R. and Zajac, Anne M. and Bowdridge, Scott A. and Greiner, Scott P.}, year={2022}, month={Aug} }
 @article{weaver_garza_greiner_bowdridge_2021, title={Immune mechanisms of Texel sheep to adult and egg stages of Haemonchus contortus}, ISSN={["1365-3024"]}, DOI={10.1111/pim.12876}, abstractNote={Abstract}, journal={PARASITE IMMUNOLOGY}, author={Weaver, Andrew R. and Garza, Javier J. and Greiner, Scott P. and Bowdridge, Scott A.}, year={2021}, month={Aug} }