Age Resistance of Chickens to the Nematode Ascaridia lineata (Schneider)

The Inheritance of Resistance to Cecal Coccidiosis in the Domestic Fowl

“…Published experimental work pertaining to resistance or susceptibility to parasitic diseases of poultry are limited, however. Ackert et al (1935) infected various breeds of chickens with the embryonated eggs of the nematode Ascaridia lineata and found differences between breeds and varieties in their re-sistance and susceptibility to this specific parasite. With limited data based on a non-experimental infection with Eimeria tenella in progeny from crosses of Leghorns and Favorelles, Krallinger and Chodiezsner (1931) concluded that hereditary factors influenced, in part, variations in the degrees of resistance observed.…”

Ascarid Infections in Broilers Raised on Dirt and Concrete Floors

“…However, in an experiment with many repetitions on various breeds as was the case of the present investigation, such a chance would appear remote. Ackert et al (1935) studied the effect of breed resistance in chickens to the fowl ascarid. Although their study did not include some of the breeds used in the present one, it showed that the heavier breeds were generally more resistant than the lighter breeds.…”

Thyroid Condition of Chickens and Development of Parasitic Nematodes

“…Ackert et al (1935) found heavier breeds of chickens, such as Rhode Island Reds, White and Barred Plymouth Rocks, more resistant to infection with A. galli than White Leghorns and White Minorcas. The present writer (1948b) reported a survey of worm populations of chickens in Tennessee where greater numbers of H. gallinae occurred in heavy breeds.…”