Relation of Reproduction Indicators from the Structure of Nutrition Ration in Cows of Dairy Farms
Abstract
In five cows farms with over 25 cattle heads were studied relations of the reproductions indicators from the structure of nutrition ration. Indicators of the para service period (PSP), service period (SP) and of the average copulations index (CI) were matched with quantity indicators of nutrition ration, amount of the dry matter (DM), amount of hard fermentable fibres (CF), easily fermentable fibres (NDF), with total metabolic energy (FME) and metabolized energy (EM). Obtained data, after grouping and statistically analysis, showed that there is dependency relation among indicators. Most important negative correlative relations were between service period (SP) and the copulation index (CI) with the level of the metabolized energy (EM), (r = - 0.387 and r = - 0.427) and with the total energy (FME) in ration (r = - 0.370 and r = - 0.412). Paraservice period (PSP) seems to be unaffected by the composition and structure of nutrition ration.
Keywords: Total energy, metabolized energy, service period, copulation index.
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