Wet feed and cold water as heat stress modulators in growing Muscovy ducklings
نویسندگان
چکیده
منابع مشابه
INVOLVEMENT OF SERETONIN IN COLD-INDUCED THERMOGENESIS IN MUSCOVY DUCKLINGS: A HPLC STUDY Short communication
On the basis of its marked thermogenic and lipolytic effects in birds, glucagon appears as a strong mediator of avian nonshivering thermogenesis (NST).The present work was performed to test whether glucagon administration acts directly on avian thermoregulatory mechanisms by inducing thermogenesis or indirectly through the participation of serotonin (5-HT); a widely distributed monoamine neurot...
متن کاملHormonal control of thermogenesis in perfused muscle of Muscovy ducklings.
Endocrine stimulation of muscle nonshivering thermogenesis (NST) in ducklings was investigated in vitro using a perfused hindlimb preparation maintained at 25°C. Effects of flow rate, norepinephrine (NE), epinephrine, and glucagon on perfused muscle oxygen consumption (M˙o 2) and perfusion pressure were studied. Control ducklings ( Cairina moschata, 5 wk old) reared at thermoneutrality (25°C, T...
متن کاملEphedrine-caffeine mixture in wet-cold stress.
Our investigations were aimed at studying the possibility of enhancement of homeostatic processes protecting against excessive body cooling by using thermogenic drugs. We studied the influence of ephedrine (1 mg/kg) and caffeine (2.5 mg/kg) mixture in males immersed in cold water (12 degrees C) on core temperature and plasma catecholamines, cortisol, energy substrates and chosen cognitive funct...
متن کاملEvaluating equations estimating change in swine feed intake during heat and cold stress.
The objectives of this study were to evaluate heat stress feed intake models for growing swine using a data set assembled from the literature and to develop a series of new equations modeling the influence of the thermal environment and interactions between the thermal environmental and other factors on feed intake. A literature survey was conducted to identify studies assessing intake response...
متن کاملWater thickness effect on the fin efficiency and heat transfer for partially wet-surface heat exchanger
Heat and mass transfer, in this paper, is considered in one-row heat exchanger, that fins are hotter than air flow and water is added to fins. Related governing equations are derived by analyzing a two-dimension model in a unique cell of a heat exchange. These equations are numerically solved by finite difference method. Heat transfer and efficiency under partially wet surface are calculated by...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Poultry Science
سال: 2018
ISSN: 0032-5791
DOI: 10.3382/ps/pey006