Many birds are capable of varying the rate of evaporative heat loss during respiration as a
means of temperature regulation. 2. Respiratory heat loss becomes increasingly important …

Skin and feather characteristics, which play a critical role in body temperature maintenance,
can be affected by incubation circumstances, such as incubation temperature. However, no …

The effect of temperature on the heat production, of temperature-acclimatized feathered and
defeathered cockerels was examined at 15, 22, 25, 29, 34 and 38° C. The maintenance ME …

Many invertebrates, birds, and mammals, including those of agricultural importance, depend
on the variable microclimate of the upper soil and lower atmosphere. These animals are …

II. There are differences between swayback in Gt. Britain and the similar disease, enzootic
ataxia in Australia. During 1956-58, the epidemiology, pathology and biochemistry of …

Hens and cockerels of a White Leghorn strain ('H & N') were kept at a constant temperature
of 23° C from 1 year until 2¼ years of age. The mean fasting heat production, which was …

Houghton Poultry Research Station, Houghton, Huntingdon, England s the chick hatches it
acquires the ability to regulate its meta-A bolism thereby enabling it to maintain a relatively …

The heat production of hens and cockerels of a White Leghorn strain ('H & N') was measured
after acclimation to environmental temperatures of 16, 23, 27 and 33° C. No difference in …

1. Two groups of pullets were reared on a 12 and a 23½ hr. day length respectively and at
an environmental temperature of 64–65° F. Two months after the first bird came into lay, the …

Known mineral deficiences in pigs, and occurrences in South Australia are recorded. An
attempt is being made to formulate a ration, compounded from readily available feeding …