Avaliação do perfil metabólico de vacas da raça Holandesa durante o período de transição

Alvarenga, E.A.; Moreira, Geane; Filho, Elias Jorge Facury; Leme, Fabíola Oliveira Paes; Coelho, Sandra Gesteira; Molina, L. R.; Lima, Josiane Aparecida de; Carvalho, A.Ú.

doi:10.1590/s0100-736x2015000300012

Cited by 18 publications

(31 citation statements)

References 52 publications

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“…The cholesterol levels in crossbred dairy cows showed the same pattern as that already noted in Holstein cows (CAVESTANY et al, 2005;STENGÄRDE et al, 2008;DORLAND et al, 2009;ALVARENGA et al, 2015). Some factors such as food intake reduction and cortisol increase with subsequent cholesterol synthesis decrease can justify the decline in serum levels near parturition (ALVARENGA et al, 2015).…”

Section: Discussionsupporting

confidence: 67%

Metabolites able to predict uterine diseases in crossbred dairy cows during the transition period

Daibert

Alvarenga

Rezende

et al. 2018

SCA

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This study aimed to identify possible metabolites able to predict puerperal uterine diseases in crossbred dairy cows (Holstein x Gir) in the transition period. We hypothesized that, as what has been observed for Holstein cows, a negative energy balance (NEB) may increase the incidence of uterine diseases. Thirtyfour lactating crossbred cows (½HG, ¼HG, ¾HG, and 5/8HG) were evaluated during prepartum (-60d and -30d), calving, and postpartum (+14d, +21d, and +35d) periods, being divided into two groups (with and without uterine diseases). NEB evaluations were based on the concentrations of non-esterified fatty acids (NEFA) and beta-hydroxybutyrate (BHBA) at calving and 14 days postpartum. Nearly 1/3 of the crossbred cows presented an NEB, characterized by a significant increase in NEFA with no BHBA increase; however, it was less intense than that observed in Holstein cows during the transition period. There was a significant difference between cows with and without uterine diseases in NEFA and calcium concentrations at partum, as well as body condition score (BCS) during prepartum. In conclusion, the occurrence of uterine diseases during the transitional period is related to the BCS in the prepartum period, besides serum NEFA and calcium concentrations at partum. Key words: Body condition score. NEFA. Endometritis. Metritis. ResumoO objetivo do estudo foi identificar possíveis metabólitos no período de transição capazes de predizer a ocorrência de enfermidades uterinas puerperais em vacas leiteiras (Holandês X Gir parto (-60d e -30d), parto e pós-parto (+14d, +21d e +35d) e as fêmeas divididas em dois grupos, com e sem enfermidades uterinas. O BEN foi estabelecido com base nas concentrações de ácidos graxos não-esterificados (NEFA) e beta-hidroxibutirato (BHBA) no parto e 14 dias pós-parto. Observou-se que cerca de 1/3 das vacas mestiças passaram por BEN caracterizado por aumento significativo de NEFA e sem aumento de BHBA, porém em intensidade menor do que o observado em vacas Holandesas. Verificouse diferença significativa do escore de condição corporal (ECC) no pré-parto e das concentrações de NEFA e de cálcio no parto, entre vacas com e sem enfermidades uterinas. Conclui-se que o ECC no pré-parto e as concentrações de NEFA e cálcio no parto se relacionam com a ocorrência de enfermidades uterinas. Palavras-chave: Escore de condição corporal. NEFA. Endometrite. Metrite.

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Section: Discussionsupporting

confidence: 67%

Metabolites able to predict uterine diseases in crossbred dairy cows during the transition period

Daibert

Alvarenga

Rezende

et al. 2018

SCA

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“…There is a remarkable difference when we compare these results with a Chilean study with grazing cattle conducted from 2003 to 2011, using a cut point of 8.0mg/dL for hypocalcemia, that find a much lower frequency of only 3.4% of animals below the cut point (Wagemann et al, 2014). One other Brazilian study performed by Alvarenga et al (2015) showed better results with 16.7% of animals with subclinical hypocalcemia. These results demonstrate that is possible to decrease the incidence of hypocalcemia and that further researches are necessary to understand factors that are causing this high incidence in so many studies in Brazil.…”

Section: Resultsmentioning

confidence: 60%

Mineral profile of crossbred F 1 Holstein x Gyr dairy cows during the transition period in summer and winter

Moreira

Filho

Costa

et al. 2017

Arq. Bras. Med. Vet. Zootec.

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The transition period is often a great challenge for dairy cows and mineral imbalances are frequent. With the aim to better understand the mineral profile of F 1 Holstein x Gyr dairy cows and their performances under the different conditions of summer and winter, we collected blood samples to measure calcium, magnesium and phosphorus. Samplings were performed during summer and winter, on 15 and 13 pluriparous F 1 Holstein x Gyr dairy cows, respectively. Blood sampling started 4 weeks prior to the expected calving date until 30 days postpartum. The mean concentrations of all three minerals had a different pattern during the transition period in each season, representing the interaction time x season. Calcium concentration was lower in winter and more animals suffered from subclinical hypocalcemia (100%) then in summer (38.46%). Magnesium concentration was also lower in winter and 46.67% of animals had hypomagnesemia, contributing for the higher hypocalcemia frequency observed in the same season. A high proportion of animals had hyperphosphatemia what can represent an environmental problem and more attention should be given to it. The high frequency of animals with subclinical hypocalcemia is alarming once that can lead to greater consequences.

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“…As a result, cortisol is considered an important glucocorticoid that relates directly to biomolecular metabolism, as it circulates in the blood while being linked to an alpha globulin (ALVARENGA et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Serum cortisol concentration in cattle of different genetic groups slaughtered in confinement

Pales

Pádua

Santos

et al. 2016

SCA

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The objective of this work was to compare the serum cortisol levels among four genetic cattle groups slaughtered in confinement. Thirty-two non-castrated male bovines from four genetic groups were analyzed: Nelore, Aberdeen Angus × Nelore, Caracu × Nelore, and Guzerá × Nelore. The blood samples were collected on the day of weighing (every 28 days) and during the slaughter. Regarding the concentration of serum cortisol, no significant differences were found among the groups during the first, second, and fourth collections. However, during the third collection and at the day of slaughter, respectively, the Nelore group (3.15 ng/dL; 2.98 ng/dL) showed similarity to the Caracu × Nelore (2.02 ng/dL; 2.07ng/dL) and Guzerá × Nelore (2.33 ng/dL; 2.40 ng/dL) groups. Nelore showed a significant difference compared with the Aberdeen Angus × Nelore group (1.21 ng/dL; 1.61 ng/dL). With respect to the overall collection averages, the Nelore group (2.85 ± 0.87 ng/dL) showed greater values than the Aberdeen Angus × Nelore group (1.61 ± 0.87 ng/dL). However, it showed similarities to the Caracu × Nelore (2.06 ± 1.31 ng/dL) and Guzerá × Nelore (2.48 ± 1.16 ng/dL) groups. It was also observed that animals with low cortisol values gained more weight, as demonstrated by the correlation between ADG and the cortisol collection averages (-0.54; p < 0.05). There was no difference among the groups with respect to shearing strength of the meat, and the correlation between this force and the cortisol collection average (0.15; p > 0.05, ns) showed that meat tenderness in the studied groups was not affected. Key words: Shearing strength. Meat tenderness. Beef steers. ResumoObjetivou-se através deste trabalho comparar o nível sérico de cortisol em quatro grupos genéticos de bovinos terminados em confinamento. Foram avaliados 32 bovinos machos não castrados de quatro grupos genéticos, sendo estes: Nelore, Aberdeen Angus x Nelore, Caracu x Nelore e Guzerá x Nelore. As amostras de sangue foram coletadas nos dias das pesagens, a cada 28 dias e durante o abate, na sangria, para posterior dosagem do cortisol plasmático. Para a concentração de cortisol sérico, não foram encontradas diferenças significativas entre os grupos, na primeira, segunda e quarta coleta, porém na terceira coleta e na coleta do dia do abate, respectivamente o grupo Nelore (3,15ηg/dL; 2,98ηg/

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Avaliação do perfil metabólico de vacas da raça Holandesa durante o período de transição

Cited by 18 publications

References 52 publications

Metabolites able to predict uterine diseases in crossbred dairy cows during the transition period

Metabolites able to predict uterine diseases in crossbred dairy cows during the transition period

Mineral profile of crossbred F 1 Holstein x Gyr dairy cows during the transition period in summer and winter

Serum cortisol concentration in cattle of different genetic groups slaughtered in confinement

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