Academic Journal
PSVI-1 Effect of Soy co-Products in Supplements for Growing Cattle on Hemocytology Following a Lipopolysaccharide Challenge
| العنوان: | PSVI-1 Effect of Soy co-Products in Supplements for Growing Cattle on Hemocytology Following a Lipopolysaccharide Challenge |
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| المؤلفون: | Midkiff, Kirsten A, Scott, Rachel M, Dunkel, Sidney N, Cheek, Robin A, Lansdell, Bralee S, Littlejohn, Brittni P, Powell, Jeremy G, Galloway, Doug L, Reynolds, Jana L, Kegley, Elizabeth B |
| المصدر: | Journal of Animal Science ; volume 101, issue Supplement_2, page 343-344 ; ISSN 0021-8812 1525-3163 |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 2023 |
| الوصف: | The objective of this study was to determine the effect of including soy co-products (soybean meal and soy oil) in the diet on the hemocytology of cattle after an endotoxin challenge. For the growing phase, crossbred Angus steers (n = 36; initial body weight = 289 ± 31 kg) were stratified by body weight and sire and randomly assigned to pastures (n = 9; 0.45 ha mixed grass). Pastures were assigned randomly to 1 of 3 dietary treatments: 1) a control supplement containing no soy co-products (CON); 2) a supplement containing soybean meal (SBM); or 3) a supplement containing soy oil (SBO). All supplements were isonitrogenous and isoenergetic. Cattle were fed supplements (2.45 kg DM/day) for 56 days. At the conclusion of the growing phase, cattle were assigned randomly to 1 of 2 groups for a lipopolysaccharide (LPS) challenge (i.v. infusion of 0.5 µg LPS/kg of body weight). A minimum of 18 hours before sampling, cattle were fitted with jugular vein catheters and placed into stanchions. Blood was collected starting 2 hours before LPS infusion (-2 hr), immediately prior to LPS infusion (0 hr), and at 2, 4, 6, and 8 hr. Statistical analyses were performed using the MIXED procedure of SAS 9.4 as repeated measures with treatment, time, and treatment × time interaction as fixed effects, challenge group as random effect, and calf specified as the subject. Statistical significance was declared at P ≤ 0.05 and tendencies declared at 0.05 < P ≤ 0.1. There were treatment × time interactions for neutrophils (P = 0.003), percentage of neutrophils (P = 0.002), percentage of lymphocytes (P = 0.006), and neutrophil/lymphocyte ratio (NE:LY ratio; P = 0.001). Briefly, neutrophils, percentage of neutrophils, and NE:LY ratio were decreased in cattle on CON diets compared with SBM at -2 h and 0 h (P < 0.01). Also, the percentage of neutrophils were greater at 8 h for cattle on SBO diets than SBM diets (P = 0.018). The percentage of lymphocytes were greater in cattle on the CON diets compared with the SBM diets at 0 ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1093/jas/skad341.390 |
| الاتاحة: | https://doi.org/10.1093/jas/skad341.390 https://academic.oup.com/jas/article-pdf/101/Supplement_2/343/52972935/skad341.390.pdf |
| Rights: | https://academic.oup.com/pages/standard-publication-reuse-rights |
| رقم الانضمام: | edsbas.28257975 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/jas/skad341.390 |
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