0308-521X/$ see front matter Published by Elsevier doi:10.1016/j.agsy.2009.01.002 * Corresponding author. Tel.: +701 667 3002; fax: + E-mail address: [email protected] (R. P Spatiotemporal variability in forage quantity and quality requires that regular assessment is needed of the capacity for grasslands to support livestock nutritional requirements. Current methods for estimating g...

Forage quality testing defines the language of value between the dairy and forage sector. From a nutritionist’s viewpoint, forage quality consists of many analyses that, together, provide a prediction of performance in a balanced ration for the dairy cow. Marketing systems, on the other hand, require a few simple criteria that can be related to value and price discovery. Currently, most trading...

Two explanations exist for the evolutionary origin of grouping in primary consumers: reduction of individual predation risk and resource-mediated aggregation. While several studies have assessed relationships between aggregation and predation risk, few studies have examined the circumstances under which resource-mediated aggregation can lead to stable group formation. Using a model, we examined...

abstract. information on forage quality in phenological stage could help range managers to choose suitable grazing method to achieve higher animal performance without detriment to vegetation. vetiver grass (vetiveria zizanioides) is a non-native perennial grass that was introduced to the iran in 2008. this plant is a multi use species that could be considered from different viewpoints. thus, it...

Preservation of forage crops as silage offers opportunity to avoid the high risk of rain-damaged hay in the humid south-central USA. Recent developments with baled silage or baleage make silage a less expensive option than typical chopped silage. Silage has been important in the region primarily for dairy production, but baleage has become an option for the more extensive beef cattle industry i...

Elements of forage testing as it relates to markets include 1) Standardization of Sampling, 2) Standardization of between-lab variation, and 3) Standardization of what is analyzed. None of these elements can be ignored. While the current ‘fiber based’ system of utilizing Relative Feed Value and TDN has been useful, incorporation of more dynamic analyses are needed. A ‘core alfalfa test’ consist...

Forage analyses are a valuable tool for determining the economic value of forages and for formulating efficient and profitable rations. To be useful, forage analyses must be determined accurately and interpreted correctly. The sample submitted must truly represent the feed being analyzed and the forage analyses must provide information that is relevant. There are reliable and repeatable methods...

Heifer performance, diet composition, and forage composition were compared during rotational and continuous grazing of mixed pasture (alfalfa, tall fescue, orchardgrass). One hundred eighteen yearling heifers were used to compare the three grazing systems during 2 yr. Treatments included continuous (CONT), 6-paddock rotational (6-PADD), and 11-paddock rotational grazing (11-PADD). Rotational pa...