Several temperature-humidity indexes (THI) have been used to estimate the degree of thermal stress experienced by dairy cows. The present objectives were to develop equations using meteorological variables that predicted rectal temperature of lactating cows in a subtropical environment and compare the goodness of fit of these equations to those using 8 different THI. Rectal temperature was meas...

It has been reported that arginine vasopressin (AVP) plays a thermoregulatory action, but very little is known about the mechanisms involved. In the present study, we tested the hypothesis that nitric oxide (NO) plays a role in systemic AVP-induced hypothermia. Rectal temperature was measured before and after AVP, AVP blocker, or N G-nitro-l-arginine methyl ester (l-NAME; NO synthase inhibitor)...

Abstract The objective of this study was to determine the effect chronic inflammation during late gestation on offspring muscle development. Starting at gestational day (GD) 70, first-parity gilts were administered either lipopolysaccharide (LPS, n=7) or saline (CON, n=8) via jugular venipuncture every other until GD 84. LPS initially given 10 µg/kg BW and increased by 12% each instance adminis...

Abstract The objective of this study was to determine the effect chronic inflammation during late gestation on offspring muscle development. Starting at gestational day (GD) 70, first-parity gilts were administered either lipopolysaccharide (LPS, n=7) or saline (CON, n=8) via jugular venipuncture every other until GD 84. LPS initially given 10 µg/kg BW and increased by 12% each instance adminis...

Abstract Injection of bromocriptine mesylate has been used to mimic the symptoms tall fescue toxicosis in beef cattle. Twelve steers (351 ± 11.82 kg) were investigate effect and heat stress on serum prolactin, rectal temperature, respiration rate, innate/adaptive immune function. Steers randomly assigned receive an injection saline (CON) or (BROMO; 0.1mg/kg BW) every three days. Animals housed ...

introduction: study the protective effect of mucosal bcg vaccination with subcutaneous against leishmania major infection in susceptible balb/c mice material and methods: 6-8 weeks old male balb/c mice,were divided to two test groups and four control groups of 20 of mice and then vaccinated. two test groups vaccinated with appropriate dose of bcg through rectal and subcutaneous routs. they vacc...