Hypothermia in Newborn Calves

Occurrence of congenital cerebral theileriosis in a newborn twin Holstein calves in Iran: Case report

An 8-day-old newborn female twin Holstein calves with a history of weakness, anorexia, emaciation and convulsion were presented to Tabriz University Veterinary Teaching Hospital. On admission, the calves were febrile and recumbent. Physical examination revealed many ticks from the external body surface of the animals, right and left prescapular lymphadenopathy, severe opisthotonos, nystagmus, p...

Metabolic heat production of neonatal calves during hypothermia and recovery.

Metabolic heat production and rectal temperature were measured in 19 newborn calves (41.8 +/- 3.7 kg) during hypothermia and recovery when four different means of assistance were provided. Hypothermia of 30 degrees C rectal temperature was induced by immersion in 18 degrees C water. Calves were rewarmed in a 20 to 25 degree C air environment where thermal assistance was provided by added therma...

Natural Intrauterine Infection with Schmallenberg Virus in Malformed Newborn Calves

Natural Intrauterine Infection with Schmallenberg Virus in Malformed Newborn Calves

The Body as a Whole Schmallenberg virus (SBV)–positive calves were significantly lighter than SBV-negative calves (32 ± 15 vs. 49 ± 4 kg, p<0.05). The large deviation between SBV cases denotes a heterogeneous deficit of body weight. Notably, there was an obvious correlation between the body mass deficit and the severity of deformations in whole-body conformation (Table 1). Also, most deformed a...

Vasomotor responses in the hindlimb of newborn calves.

The reflex control of the hindlimb circulation was examined in 9 newborn calves under chloralose anesthesia by measuring iliac arterial pressure-flow curves. Asphyxia always caused vasoconstriction which was abolished or greatly reduced by sciatic nerve section. Vasomotor tone was present a few hours from birth, as shown by an increase in flow on sciatic nerve section and by drug action. It is ...