Journal Articles
Peña, S.T.; Stone, F.; Gummow, B.; Parker, A.J. et al., "Susceptibility of boar spermatozoa to heat stress using in vivo and in vitro experimental models" Tropical Animal Health and Production 53 1 (2021)
Campbell, B.J.; McCutcheon, J.S.; Marsh, A.E.; Fluharty, F.L. et al., "Delayed weaning improves the growth of lambs grazing chicory (Cichorium intybus) pastures" Small Ruminant Research 204 (2021)
Wagner, B.K.; Martin, D.G.; Rudd, D.M.; Parker, A.J., "Oxytocin alters leukogram composition in Bos indicus cattle exposed to short-duration transportation" Animal Production Science 61 13 (2021) 1315-1320-1315-1320
Callaghan, M.J.; Tomkins, N.W.; Hepworth, G.; Parker, A.J., "The effect of molasses nitrate lick blocks on supplement intake, bodyweight, condition score, blood methaemoglobin concentration and herd scale methane emissions in Bos indicus cows grazing poor quality forage" Animal Production Science 61 5 (2021) 445-458-445-458
Benu, I.; Callaghan, M.J.; Tomkins, N.; Hepworth, G. et al., "The effects of feeding nitrate on the development of methaemoglobinaemia in sedentary Bos indicus cattle" Animal Production Science (2021)
Galarza, E.M.; Lizarraga, R.M.; Mattioli, G.A.; Parker, A.J. et al., "Effect of preshipment preconditioning and injectable antioxidant trace elements (Cu, Mn, Se, Zn) and vitamins (A, E) on plasma metabolite and hormone concentrations and growth in weaned beef cattle." Transl Anim Sci 5 1 (2021) txaa233-txaa233
Schrenk, D.; Bignami, M.; Bodin, L.; Chipman, J.K. et al., "Risk assessment of nitrate and nitrite in feed" EFSA Journal 18 11 (2020)
Nickles, K.; Relling, A.; Moraes, L.; Parker, A.J., "The effect of a social facilitator cow on the distance walked and time spent walking by abruptly weaned beef calves" Animal Production Science (2020)
Wagner, B.K.; Relling, A.E.; Kieffer, J.D.; Moraes, L.E. et al., "Short communication: pharmacokinetics of oxytocin administered intranasally to beef cattle" Domestic Animal Endocrinology 71 (2020)
Carranza-Martin, A.C.; Parker, A.J.; Furnus, C.C.; Relling, A.E., "Ghrelin antagonist regulates metabolic hormone receptorsin the hypothalamus of ewes" Small Ruminant Research 185 (2020)
Martin, A.C.C.; Parker, A.J.; Furnus, C.C.; Relling, A.E., "Ghrelin antagonist overrides the mRNA expression of NPY in hypothalamus in feed restricted ewes." PLoS One 15 9 (2020) e0238465-e0238465
Wagner, B.K.; Relling, A.E.; Kieffer, J.D.; Parker, A.J., "Intranasal oxytocin treatment does not attenuate the hypothalamo-pituitary-adrenal axis in beef heifers subjected to isolation stress or restraint and isolation stress." Domest Anim Endocrinol 70 (2020) 106379-106379
Peña, S.T.; Gummow, B.; Parker, A.J.; Paris, D.B.B.P., "Antioxidant supplementation mitigates DNA damage in boar (Sus scrofa domesticus) spermatozoa induced by tropical summer" PLoS ONE 14 4 (2019)
Peña, S.T.; Stone, F.; Gummow, B.; Parker, A.J. et al., "Tropical summer induces DNA fragmentation in boar spermatozoa: Implications for evaluating seasonal infertility" Reproduction, Fertility and Development 31 3 (2019) 590-601-590-601
Parker, E.M.; Edwards, L.J.; Mollenkopf, D.F.; Ballash, G.A. et al., "Salmonella monitoring programs in Australian feed mills: a retrospective analysis" Australian Veterinary Journal 97 9 (2019) 336-342-336-342
Leo-Penu, C.L.O.; Picard, J.; Fitzpatrick, L.A.; Parker, A.J., "Feed and water deprivation has a negative but transient effect on the rumen kinetics of Bos indicus steers" Journal of Animal Physiology and Animal Nutrition 102 3 (2018) 670-678-670-678
Benu, I.; Fitzpatrick, L.A.; Callaghan, M.J.; Tomkins, N. et al., "The effect of nitrate supplementation on arterial blood gases, haemoglobin fractions and heart rate in Bos indicus cattle after exercise" Animal Production Science 58 9 (2018) 1603-1607-1603-1607
Tomkins, N.; Parker, A.J.; Hepworth, G.; Callaghan, M.J., "Nitrate supplementation has marginal effects on enteric methane production from Bos indicus steers fed Flinders grass (Iseilema spp.) hay, but elevates blood methaemoglobin concentrations" Animal Production Science 58 2 (2018) 262-270-262-270
Parker, E.M.; Gardiner, C.P.; Kessell, A.E.; Parker, A.J., "Hypovitaminosis A in extensively grazed beef cattle." Aust Vet J 95 3 (2017) 80-84-80-84
Nogueira, D.M.; Eshtaeba, A.; Cavalieri, J.; Fitzpatrick, L.A. et al., "Short-term supplementation with maize increases ovulation rate in goats when dietary metabolizable energy provides requirements for both maintenance and 1.5 times maintenance." Theriogenology 89 (2017) 97-105-97-105
Penã, S.T.; Gummow, B.; Parker, A.J.; Paris, D.B.B.P., "Revisiting summer infertility in the pig: Could heat stress-induced sperm DNA damage negatively affect early embryo development?" Animal Production Science 57 10 (2017) 1975-1983-1975-1983
Parker, A.J.; Goopy, J.P.; Callaghan, M.J.; Vermunt, J.J. et al., "Vitamin A deficiency in Bos indicus heifers fed a wheat straw diet cannot be corrected with algae lick blocks or intramuscular injectable retinyl palmitate treatments" Animal Production Science 57 6 (2017) 1079-1084-1079-1084
Nogueira, D.M.; Cavalieri, J.; Fitzpatrick, L.A.; Gummow, B. et al., "Effect of hormonal synchronisation and/or short-term supplementation with maize on follicular dynamics and hormone profiles in goats during the non-breeding season." Anim Reprod Sci 171 (2016) 87-97-87-97
Benu, I.; Callaghan, M.J.; Tomkins, N.; Hepworth, G. et al., "The effect of feeding frequency and dose rate of nitrate supplements on blood haemoglobin fractions in Bos indicus cattle fed Flinders grass (Iseilemia spp.) hay" Animal Production Science 56 10 (2016) 1605-1611-1605-1611
Nogueira, D.M.; Gardiner, C.P.; Gummow, B.; Cavalieri, J. et al., "A survey of the meat goat industry in Queensland and New South Wales. 1. General property information, goat and pasture management" Animal Production Science 56 9 (2016) 1520-1532-1520-1532
Leo-Penu, C.L.O.; Fitzpatrick, L.A.; Zerby, H.N.; Parker, A.J., "Treating Bos indicus bulls with rumen transfaunation after 24 hours of transportation does not replete muscle glycogen" Animal Production Science 56 10 (2016) 1738-1744-1738-1744
Mullins, C.R.; Zerby, H.N.; Fitzpatrick, L.A.; Parker, A.J., "Bos indicus cattle possess greater basal concentrations of HSP27, alpha B-crystallin, and HSP70 in skeletal muscle in vivo compared with cattle." J Anim Sci 94 1 (2016) 424-429-424-429
Nogueira, D.M.; Gummow, B.; Gardiner, C.P.; Cavalieri, J. et al., "A survey of the meat goat industry in Queensland and New South Wales. 2. Herd management, reproductive performance and animal health" Animal Production Science 56 9 (2016) 1533-1544-1533-1544
Mullins, C.R.; Zerby, H.N.; Fitzpatrick, L.A.; Parker, A.J., "Bos indicus cattle possess greater basal concentrations of HSP27, alpha B-crystallin, and HSP70 in skeletal muscle in vivo compared with Bos taurus cattle" Journal of Animal Science 94 1 (2016) 424-429-424-429
Nogueira, D.M.; Cavalieri, J.; Gummow, B.; Parker, A.J., "Comparison of follicular dynamics and hormone profiles in Boer goats examined during the breeding and non-breeding seasons in the tropics of Queensland, Australia" Small Ruminant Research 125 (2015) 93-100-93-100
Nogueira, D.M.; Cavalieri, J.; Gummow, B.; Parker, A.J., "The timing of the commencement of the breeding season in Boer and rangeland goats raised in the tropics of Queensland, Australia" Small Ruminant Research 125 (2015) 101-105-101-105
Callaghan, M.J.; Tomkins, N.W.; Benu, I.; Parker, A.J., "How feasible is it to replace urea with nitrates to mitigate greenhouse gas emissions from extensively managed beef cattle?" Animal Production Science 54 9 (2014) 1300-1304-1300-1304
Wainewright, S.A.; Parker, A.J.; Holmes, W.E.; Zerby, H. et al., "An economic case study of entire male grain-fed beef from a north-western Queensland production system" Animal Production Science 51 6 (2011) 570-574-570-574
Parker, A.J.; Coleman, C.J.; Fitzpatrick, L.A., "A technique for sampling blood from cattle during transportation" Animal Production Science 49 12 (2009) 1068-1070-1068-1070
Rochfort, S.; Parker, A.J.; Dunshea, F.R., "Plant bioactives for ruminant health and productivity." Phytochemistry 69 2 (2008) 299-322-299-322
Parker, A.J.; Dobson, G.P.; Fitzpatrick, L.A., "Physiological and metabolic effects of prophylactic treatment with the osmolytes glycerol and betaine on Bos indicus steers during long duration transportation." J Anim Sci 85 11 (2007) 2916-2923-2916-2923
Parker, A.J.; Fitzpatrick, L.A., "The relationship between arterial and venous acid-base measurements in normal Bos indicus steers." Aust Vet J 84 10 (2006) 349-350-349-350
Stanger, K.J.; Ketheesan, N.; Parker, A.J.; Coleman, C.J. et al., "The effect of transportation on the immune status of Bos indicus steers." J Anim Sci 83 11 (2005) 2632-2636-2632-2636
Parker, A.J.; Hamlin, G.P.; Coleman, C.J.; Fitzpatrick, L.A., "Excess cortisol interferes with a principal mechanism of resistance to dehydration in Bos indicus steers." J Anim Sci 82 4 (2004) 1037-1045-1037-1045
Parker, A.J.; Hamlin, G.P.; Coleman, C.J.; Fitzpatrick, L.A., "Quantitative analysis of acid-base balance in Bos indicus steers subjected to transportation of long duration." J Anim Sci 81 6 (2003) 1434-1439-1434-1439
Parker, A.J.; Hamlin, G.P.; Coleman, C.J.; Fitzpatrick, L.A., "Dehydration in stressed ruminants may be the result of a cortisol-induced diuresis." J Anim Sci 81 2 (2003) 512-519-512-519
Campbell, B.J.; Gelley, C.H.; McCutcheon, J.S.; Fluharty, F.L. et al., "A comparison of annual forages and stockpiled pasture on the growth and health parameters of grazing fall-born lambs"
Conferences
Parker, A.J., "Virtual Fencing systems; A pragmatic review" Heart of America Grazing conference 2021.
Lizarraga, R.; Galarza, E.; Guillermo, M.; Parker, A.J. et al., "PSVI-21 Effect of preconditioning pre-shipment and injectable antioxidant trace elements and vitamins on growth, antioxidant status, and plasma metabolites and insulin concentration in weaned beef cattle" 2020 ASAS Midwest conference 2020.
Nickles, K.; Relling, A.; Parker, A.J., "51 Intranasal oxytocin improves plasma non-esterified fatty acids but not distance walked or cortisol concentrations at weaning" 2020 Annual Meeting, Midwest section of ASAS 2020.
Campbell, B.; McCutcheon, J.; Fluharty, F.; Parker, A.J., "69 - Connecting with the Next Generation of Shepherds – An Online Sheep-based Webpage Serves as an Additional Tool in Extension Education." 2020 Annual Meeting, Midwest section of ASAS 2020.
Campbell, B.; McCutcheon, J.; Marsh, A.; Fluharty, F. et al., "PSV-19 - Pasture history and supplementation effect on parasite status of naïve lambs in grazing systems" 2020 Annual Meeting, Midwest section of ASAS 2020.
Nickles, K.; Relling, A.; Garcia-Guerra, A.; Fluharty, F. et al., "70 Cows housed in muddy environmental conditions during late gestation have lesser body weight and body condition score compared with cows housed on wood chips" ASAS-CSAS 2020 Annual Meeting and Trade Show 2020.
Campbell, B.; Gelley, C.; McCutcheon, J.; Fluharty, F. et al., "PSX-15 Fall grazing of annual forages with fall born lambs may improve animal growth and total protein concentrations when compared to stockpiled pastures" ASAS-CSAS 2020 Annual Meeting and Trade Show 2020.
Nickles, K.; Parker, A.J., "Calves walk less when placed with a social facilitator cow at weaning." Northern Beef Research Update Conference 2019 2019.
Nickles, K.; Relling, A.; Parker, A.J., "79 Seeing the whole picture: Utilizing GPS technology to determine distance and time calves devote to walking post-weaning" 2019 ASAS-CSAS Annual meeting and trade show 2019.
Campbell, B.; McCutcheon, J.; Fluharty, F.; Parker, A.J., "38 The sustainability of grass fed lamb in the eastern United States" 2018 American Society of Animal Science Annual Meeting 2018.
Wagner, B.; Parker, A.J., "PSII-11 The cellular immune system in Bos indicus cattle is not altered by short-duration transport." American Society of Animal Science Annual Meeting, Vancouver, Canada 2018.
Ngo, T.; Gardiner, C.; Parker, A.J., "The Effects of Diet Preference on Feed Intake, Digestibility and Nitrogen Balance of Sheep Given Iseilema spp. (Flinders Grass) Hay and/or Desmanthus leptophyllus cv. JCU 1 Ad Libitum" International tropical agriculture conference 2017.
Noguiera, D.; Parker, A.J.; Cavalieri, J.; Gummow, B. et al., "Effect of hormonal treatment and energy supplementation on reproductive performance in rangeland goats during the non-breeding season: preliminary results" 29th Biennial Conference of the Australian Society of Animal Production (ASAP) 2012.
Technical Reports
Nickles, K.; Relling, A.; Parker, A.J., "The cost of mud to the beef cow"
