The Marginal Value Theorem (MVT) is a cornerstone of biological theory. It connects the quality and distribution of patches in a fragmented habitat to the optimal time an individual should spend exploiting them, and thus its optimal rate of movement. However, predictions regarding how habitat alterations should impact optimal strategies have remained elusive, with heavy reliance on graphical ar...

ing as it does from population growth and technical progress, the model does not generate perpetual growth. It does, however, illustrate the role of organizational change in exploiting the gains to labor specialization and, thereby, overcoming diminishing returns to capital. The focus on organization, in turn, highlights the role of transaction costs as a determinant of long run economic perfor...

The objective of this study was to evaluate productive, nutritional, and economic traits in lactating cows on pasture fed diets with different cation-anion balances (DCAB). Ten ¾ Holstein × ¼ Dairy Gyr the middle third lactation, at an average age 70 ± 4.6 months body weight 400 55.2 kg, were distributed into five treatments a 5 Latin square experimental design two simultaneous squares. Treatme...