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Keywords
Array, Array
Abstract
Objective: The aim was to analyze the cost of the calving interval (CI) in cattle production in humid tropic of south-eastern Mexico and to predict the possible economic losses of farms in the humid tropics.
Design/methodology/approach: Tropical farms corresponding to 1,200 cattle of the breeds: Simmental, Simbrha, Brahman and F1 crosses, grazing was analyzed. One-way ANOVA was used to compare costs among breeds. Linear regression was used to obtain the relationship between cow age and CI.
Results: The cost of a day without pregnancy reached US$0.99 (± 0.05), and a cow that did not calve for one year represented an investment loss of US$359.00 (± 11.72) dollars in relation to production costs.
Limitations on study/implications: The income obtained from the sale of a calf at weaning and milk amounted to US$734.10 (± 16.98) dollars.
Findings/conclusions: No significant differences were found between the races (p <0.05) and the CI, however, there was a positive relationship (r=0.9326, r2= 0.8698, p<0.05) between the CI and the increase in the age of the cow.
