Hereford cattle

Disorders similar to CHS in humans have been reported in beige mice, Aleutian mink, Hereford cattle and killer whales, and neutrophil dysfunctions similar to those reported in humans are apparent in these animals. Therapy of CHS in humans usually consists of careful management of infections with appropriate antibiotics, although improvements have been reported following administration of high doses of ascorbic acid. Bone-marrow transplantation offers some hope to these patients, especially those entering the accelerated phase of the disease. 

There is also recognition of the potential for organic fibre products, with Treliske based at central Otago. This 3000-acre family farm runs Merino, Romney and coloured sheep flocks with Angus and Hereford cattle. Fleeces are then selected by hand and spun into undyed, unbleached quality yarns which are hand and machine knitted and exported mainly to the US and Japan. 

Olson and Tammeus (215) reported a syndrome of subperiosteal hemorrhages, progressive stiffness, and eventual immobility in a herd of Hereford cattle that responded to L-ascorbic acid treatment but relapsed when treatment ceased. Michigan workers (216) also observed a scurvylike condition, a dermatitis, low hemoglobin and ascorbic acid blood values, and death (35 animals) in a herd of Shorthorn cattle. 

For the cattle, native breeds were preferred, with Shorthorn, Angus, Devon, Hereford and Welsh Black predominating. The sheep were a mixture, but Texel and Charolais were the most popular terminal sires. 

Famphur was not very effective in the control of ticks. The tropical horse tick (Anocentor nitens) is a species of serious concern to horse breeders and raisers in Florida mainly because it transmits Babesia caballi, the causative agent of equine piroplasmosis. A secondary concern is that heavy tick infestations may cause injury to the ears of the horse (Gladney etal. 1972). Data were unavailable on famphur control of ticks in horses however, famphur was 99.9 to 100% effective in controlling A. nitens in Hereford steers and heifers when fed in the diet at 5 mg/kg BW for 14 to 21 days. Famphur at 2.5 mg/kg BW in cattle diets for 7 days was only partially effective (39 to 87.5%) in controlling horse ticks (Gladney et al. 1972). Famphur — despite multiple treatments — was not effective in controlling cattle ticks (Haemaphysalis longicornis) when used as a pour-on at recommended application rates in weaned Hereford calves (Heath et al. 1980). 

Adult rations contained equivalent of 5 mg famphur/kg BW daily Adults given equivalent of 5 mg famphur/kg BW daily Adults given equivalent of 5 mg/kg BW daily for 10 days, administered as a 33%-feed premix Intramuscular injection 15 mg/kg BW Hereford steers and calves, Angus cows to control cattle grubs (Hypoderma lineatum,... 

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