hese papers eventually also studied the effect of PA on milk composition or grazing behavior, or both, as additional measurements. The search was carried out using the following key words in different combinations: dairy cow, grazing, allowance, herbage, and pasture. More papers were then identified by reviewing the reference list in the publications resulting from the search. Papers were selected if they met the following criteria: (1) temperate regions and temperate sward species, (2) lactating dairy cows under strip- or rotational-grazing management, (3) a comparison of at least 2 PA under the same experimental conditions, particularly same pasture mass (i.e., where PA levels were only obtained through changes in daily offered area). After discarding publications with duplicated data (i.e., results from the same experiment published several times), a starting database was obtained. The initial database included 61 papers with 140 PA comparisons. It was conceptualized with rows representing treatments within experiments and columns reporting treatment characteristics and least squares means of measured variables. Each paper was identified by author(s), year of publication, and country. Each PA comparison was allocated an individual code (study) and was characterized by grazing system, season, sward type, experimental design, experimental length, number of cows, preexperimental cow characteristics, EH, and the method to estimate pasture intake. In experiments where PA was studied in interaction with another factor (e.g., at 2 supplementation levels or 2 nitrogen fertilization levels), PA comparisons conducted under similar experimental conditions were considered independent studies.