Protection of Beef Cattle from Gnats and Gadflies in the South of the Tyumen Region

ABSTRACT: The objective of this study was to evaluate the bioeconomic efficiency of beef cattle production systems in the south of Brazil. A survey was conducted with 33 beef cattle farmers operating with complete cycle production systems in areas larger or equal to 900 ha. Answers were classified in two drivers, technology (TEC) and management (MAN), which were separated into subfactors with their respective components. Multiple correspondence analysis, Tukey test, cluster analysis, and Pearson correlation were the statistics procedures. The TEC components were above normal for Brazilian farmers, but the gross margin is still lower than that needed to generate financial resources for a proper remuneration of cattle farmer. Farmers were classified into three clusters according to bioeconomic efficiency: low (LEL), intermediate (IEL), or high-efficiency level (HEL). The TEC driver differentiated the LEL x HEL clusters and the MAN, mainly expressed in costs, the IEL x HEL. Positive correlation between age at first mating and age at slaughter in the HEL cluster explains the higher costs when compared to IEL because of the use of differentiated feed resources. Investments in technologies related to herd feeding in HEL cluster improved the productivity by only 20% and the cost per hectare by 95 USD ha-1 in comparison to IEL cluster. The main differences between farmers are because of the use of technologies related to feeding and cost management. Therefore, before implementing a new technology, an economic evaluation is necessary.

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A stochastic exposure assessment model to estimate vanadium intake by beef cattle used as sentinels for the South African vanadium mining industry

Preventive Veterinary Medicine ◽

10.1016/j.prevetmed.2006.05.003 ◽

2006 ◽

Vol 76 (3-4) ◽

pp. 167-184 ◽

Cited By ~ 8

Author(s):

B. Gummow ◽

W.F.A. Kirsten ◽

R.J. Gummow ◽

J.A.P. Heesterbeek

Keyword(s):

Beef Cattle ◽

Exposure Assessment ◽

South African ◽

Mining Industry ◽

Assessment Model ◽

The South

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Production characteristics of an open range cattle herd in South-East Pilbara region of Western Australia.

The Rangeland Journal ◽

10.1071/rj9830048 ◽

1983 ◽

Vol 5 (2) ◽

pp. 48 ◽

Cited By ~ 2

Author(s):

HG Gardiner ◽

KR Shackleton ◽

JG Morrissey

Keyword(s):

Beef Cattle ◽

Western Australia ◽

Mortality Rates ◽

Grazing Pressure ◽

Cattle Herd ◽

The South ◽

Age And Sex ◽

Production Characteristics

Production and management characteristics of an open range shorthorn beef cattle herd were recorded for a four year period on a cattle station in the south-east Pilbara region of Western Australia. Herd numbers increased from 893 to 1538 resulting in a 72% increase in grazing pressure on the grazeable portion of the lease. Branding rates varied from 54 to 78% of the cows present for mating the previous year. Mortality rates increased from 4% in 1974 to 15% in 1976. Losses anlong cows older than six years and female calves were significantly higher than among animals in other age and sex categories. Turnoff during this period of herd build-up varied from 3 to 11% of the herd.

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