Water Quality Effect of Rangeland Beef Cattle Excrement
نویسندگان
چکیده
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منابع مشابه
Social behavior of grazing beef cattle: Implications for management
This paper reviews current knowledge of the social behavior of grazing beef cattle and discusses how that knowledge can be applied to rangeland cattle management. Cattle herds are composed of social subgroups that influence grazing distribution on rangeland. Grazing distribution is, in part, a learned response; therefore, management strategies that alter the social composition and structure of ...
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SUMMARY Results from various straight-and crossbreeding trials South Africa were reviewed. The conclusion is drawn that in instances, initial crossbreeding followed by inter ~ matin, crossbred cattle give the same if not better results than crossbreeding. This facilitates rangeland improvement as it number of pastures needed during the breeding season.
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Cattle and other livestock excrete endogenous steroid hormones, including estrogens, androgens, and progestins; therefore, allowing grazing livestock direct access to surface waters can result in the release of steroids in agricultural watersheds. Elevated concentrations of steroids are problematic because low concentrations of certain steroids can affect fish reproduction. To assess the occurr...
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Eight beef steers fitted with esophageal (four steers/pasture) and 12 beef calves fitted ruminal and duodenal (six calves/pasture; beginning BW = 267 +/- 6 kg) cannulas grazed either midgrass prairie rangeland (excellent range condition; MIDGRASS) or plains bluestem (Bothriochloa ischaemum var. Plains) pasture (BLUESTEM) during mid-May, late June, mid-August, and mid-October of 1990 and 1991 in...
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