Background: Effective and correct estrus detection determines the successful Artificial Insemination (AI) and in turn acceptable performance in dairy cows. All cows presented with estrus signs for AI are not usually fit for breeding for which mid cycle estrum (MCE) is one of the major causes that must be ruled out to prevent unnecessary AI and thereby preventing economic loss to the farmer. 
 
Methods: The present study was designed to compare reproductive parameters of True Estrum (TE) and MCE in crossbred Jersey cows. Around 24 cows addressed for AI has been randomly selected for the study. Based on history, clinical signs and ultrasonographic examination the cows were divided into two groups TE (n=12) and MCE (n=12) and assessed for their qualitative and quantitative parameters. 
 
Result: No significant difference could be observed between TE and MCE cows in expression of estrus signs. The size of the corpus luteum (CL) was significantly larger in MCE cows. In conclusion, no ovulation will occur in MCE cows, hence cows addressing with estrus signs needs to be ruled out for prominent CL (&gt;15 mm) and relaxation of cervical internal os before AI.

Evidence Based Approach for Midcycle Estrum in a Crossbred Jersey Cows

<div>Background: This study aims to estimate the factors affecting the agricultural production process on the problem soil of Tan Thanh district as a case study to develop solutions for sustainable agriculture. 
 
Methods: Through consultation with 150 households and 60 experts, Four primary and 18 secondary factors were identified that affect the agricultural land use of the community. 
 
Result: The results show the factors of the consumption market, government organization, profit and soil quality that are the factors that receive much attention from experts by the &ldquo;multi-criteria evaluation&rdquo; method. On the contrary, the aspects of problem soil, irrigation capacity, flooding and drought time are of little interest to experts. The results have also proposed 12 groups of structural and non-structural solutions to improve the district&rsquo;s agricultural land use efficiency. Which focuses on the consumption market, cost, profit and government organization.</div>

Evidence Based Approach for Midcycle Estrum in a Crossbred Jersey Cows

Determination of Affecting Factor for Sustainable Agricultural Production: A Case Study in Tan Thanh District, Long An Province, Vietnam