*Thermal Manipulation: Embryonic Development, Hatchability, and Hatching Quality… DOI: http://dx.doi.org/10.5772/intechopen.101894*

Thereafter, the reviewers examined the titles and abstracts, followed by examining the full version of the selected potential studies. At this point, each study was read to extract the aimed set of information. Therefore, the eligibility criteria for the final study selection included:


The initial literature search identified a total of 229 articles (125 in Web of Science, 59 in PubMed, and 45 in Scopus database). After the elimination of 89 duplicate articles, 140 studies were available for analysis. Other 72 studies were excluded after evaluating the titles, thus a total of 68 articles were eligible for abstract screening. At this point, 30 studies were excluded because they did not meet the defined criteria, which resulted in 38 studies being available for full-text evaluation. From this, 7 studies were removed based on the previously defined criteria. Finally, 31 studies were selected and included in the definitive systematic review as shown in **Figure 1**.

#### **Figure 1.**

*A flowchart of the summarized study search procedure.*
