Felipe S. Carvalho

The objective of this study was to evaluate lipid sources, associated with spineless cactus or not, as a strategy for reducing feed costs in goat milk production. Twelve lactating Saanen goats, with an average body weight of 55.0±8.0kg, were distributed in a 4x4 Latin square, with a 2x2 factorial arrangement. The treatments consisted of two lipid sources (coconut peels - CP; and cottonseed - CT), associated or not with “Orelha de Elefante Mexicana” (OEM) spineless cactus. Goats that consumed diets containing cottonseed as the main source of energy showed higher performance indexes (P<0.05). The CP+OEM treatment presented the lowest cost for 1 kg of dry matter (R$ 1.78). The PC diet demonstrated lower daily feeding costs (R$ 2.54). Total revenue was higher for the CT+OEM diet (R$ 8.17), as was net income (R$ 4.19). Therefore, the association of cottonseed with OEM spineless cactus in the feeding of lactating goats is recommended, due to the reduction in feeding costs, especially with roughage, in addition to superior performance, contributing to greater profitability of the activity. Keywords: economic evaluation, fat feeds, milk production, Opuntia stricta (Haw.) Haw., small ruminants.

Demonstrative thoughts are distinguished by the fact that their contents are determined relationally, via perception, rather than descriptively. Therefore, a fundamental task of a theory of demonstrative thought is to elucidate how facts about visual perception can explain how these thoughts come to have the contents that they do. The purpose of this paper is to investigate how cognitive psychology may help us solve this metasemantic question, through empirical models of visual processing. Although there is a dispute between attentional and non-attentional models concerning the best metasemantic mechanism for demonstrative thoughts, in this paper I will argue in favor of a hybrid model, which combines both types of processes. In this picture, attentional and non-attentional mechanisms are not mutually exclusive, and each plays a specific role in determining the singular content of demonstrative thoughts.