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Abstract

Five species of Brontaea occur in the New World. B. humilis has been introduced from Europe and is known from a few localities in eastern and Pacific coast Canada and USA. B. normata is an endemic Neotropical species. The other species, B. debilis, B. quadristigma (= B. cilifera syn. nov.) and B....

Author(s)
Carvalho, C. J. B. de; Pont, A. C.
Citation
Revista Brasileira de Zoologia, 1997, 14, 3, pp 723-749
Abstract

II. A vitamin deficiency in ruminants in the Argentine was reported, caused by a diet of Cynodon hirsutus and C. dactylon. HCN, produced by these grasses, appears to destroy the micro-organisms synthesizing vitamins of the B complex. The conditions responded to injections of the above mentioned...

Author(s)
ANON.
Citation
Recent developments affecting livestock production in the Americas, 1956, pp 83-98 pp.
Datasheet
Cover for Bos taurus (cattle)

Feral cattle can be distinguished from domestic stock only by their location and lack of ear marks or tags. Their size and conformation vary greatly...

Datasheet
Cover for Criollo cattle

Anthropological and palaeontological evidence shows that cattle were absent in America until Christopher Columbus discovered the continent. In 1493,...

Datasheet
Cover for Brahman cattle

Evolutionary HistoryAll modern cattle trace their origins to Bos primigenius. Analyses of mitochondrial DNA have shown that divergence of Bos...

Datasheet
Cover for rabies

Rabies is caused by a neurotropic virus that is transmissible to all mammals. Birds are much less susceptible to the virus than mammals, and the...

Datasheet

Cryptosporidiosis is caused by protozoan parasites of the genus Cryptosporidium (family Cryptosporidiidae, order Eucoccidiorida, subclass...

Datasheet

There exist over 200 distinct breeds of sheep Ovis aries. The breeds differ in their physical characteristics. Female sheep tend to be smaller than...

Datasheet
Cover for coccidiosis

Coccidiosis is a disease that is caused by microscopically visible parasites named ‘coccidia’ [mainly Eimeria spp and Isospora spp]. These parasites...

Datasheet

Males weigh between 45 and 55 kilos and females weigh between 25 and 35 kilos. Colouration is highly variable from mostly black, to various shades...

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