SciELO - Scientific Electronic Library Online

vol.41 issue2Frequency of fungi associated to molds in the pedunculus on pineapples from two regions of Costa Rica author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO


Agronomía Costarricense

Print version ISSN 0377-9424


SABORIO-MONTERO, Alejandro; SANCHEZ, Jorge Ml  and  VARGAS-CAMACHO, María. Dynamics of blood calcium concentration during peripartum and its relationship with production and reproduction in a Jersey cow herd. Agron. Costarricense [online]. 2017, vol.41, n.2, pp.7-16. ISSN 0377-9424.

The aim of this research was to describe the dynamics of calcium concentration in blood serum during peripartum in a Jersey cow herd from Oreamuno, Cartago, Costa Rica and its relationship with productive and reproductive indicators. A total of 161 cows were sampled, their pre-partum diet consisted grazing of kikuyu (Kikuyuocloa clandestina) (15.6% CP, 1.65 Mcal NEL (3X), 0.35% Ca, 0.32% Mg, 3.5% K) supplemented with 4 of a low Ca balanced grain mix (88% DM, 14% CP, 0.2% Ca, 0.42% Mg and 1.38% K), and 1 kg of hay (82.3% DM, 5.1% CP, 0.4% Ca, 0.35% Mg and 1.8% K).day-1. Immediately after calving, cows were supplemented with 1 kg of a balanced grain mix (87.5% DM, 18.6% CP, 0.90% Ca, 0.42% Mg and 1.38% K) per each 2.5 kg of milk. Blood samples were taken from the coccygeal vessels since 7 days before calving until 7 days after calving. Ca concentrations in blood samples were determined by atomic absorption spectrophotometry. The average minimum concentration of Ca during the study was obtained on calving day (7.27 mg.dl-1) and on average the cows exceed the threshold of subclinical hypocalcemia (8.0 mg.dl-1) until day 7 after calving. The blood calcium concentration wasn’t statistically associated to reproductive indicators. Multiparous cows with calcium concentrations lower than 5.5 mg.dl-1 on calving day had statistically (p<0.05) lower: daily milk, actual milk yield and lactation length compared to multiparous cows with blood calcium concentrations higher than or equal to 5.5 mg.dl-1. These findings indicate that blood calcium concentration during peripartum is an associated factor to yield performance in multiparous cows.

Keywords : Subclinical hypocalcemia; clinical hypocalcemia; grazing dairy cows.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )