Analysis of the reproductive parameters in the jersey breed in El Puente ranching and its impact on profitability
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Abstract
A descriptive study was carried out using the reproductive records between 2008 and 2018. Furthermore, the information was collected from the farm accounting records. We reviewed the reproductive parameters and their impact on probability at the Ganadería El Puente located in Riobamba canton, province of Chimborazo. In this study, the descriptive statistics (mean) was used to estimate yearly average. The following variables were evaluated: reproductive parameters (number of services per conception (SPC), calving to first heat interval (CFHI), calving to conception interval (CCI), calving interval (CI), and interval between heats) and economic parameters (the cost of a calf born, the cost of a pregnant cow, and the cost of a day open). The results obtained were as follows: 1) the mean number of services required per conception per cow was 2.2, taking into account only the conceptions that resulted in a calf born; 2) the average calving to first heat interval was 71,61 days; 3) the average calving to conception interval was 173, 58 days; 4) the average calving interval was 451,90 days; and 5) the average interval between heats was 31,55 days, taking into account that the heat cycle is normally 17 to 24 days with an average of 21 days. The cost indicators were calculated (based on 2018), and the results were the following: 1) $4.34/cow per day open, considering that there is great economic loss when a cow does not conceive after 100 days postpartum since the calving interval is extended, and the production decreases, increasing the cost to maintain an animal; 2) the cost of a pregnant cow was $526.57; and 3) the cost of a calf born was $1,733.12. The results suggest that the implementation of a heat detection and synchronization program shortens the calving interval and the regular training of staff reduces mistakes and maximizes production.
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