Relationship between metabolism and ovarian activity in dairy cows with different dry period lengths

Chen, Juncai; Soede, N.M.; Dorland, H.A. van; Remmelink, G.J.; Bruckmaier, Rupert M.; Kemp, B.; Knegsel, A.T.M. van

doi:10.1016/j.theriogenology.2015.07.025

Cited by 36 publications

(57 citation statements)

References 55 publications

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“…Cows with a 30-d DP had a lower plasma insulin and IGF-1 concentrations and greater GH concentration than cows with a 0-d DP. Previous studies reported lower insulin (Andersen et al, 2005;Chen et al, 2015) and IGF-1 (Chen et al, 2015) concentrations for cows with a short DP compared with no DP. The difference in lactogenic hormone concentrations between DP lengths reflects the EB of cows with a 30-d DP compared with cows with a 0-d DP and the degree of coupling of the somatotropic axis (Butler et al, 2003).…”

Section: Lactogenic Hormonesmentioning

confidence: 79%

Consequences of dietary energy source and energy level on energy balance, lactogenic hormones, and lactation curve characteristics of cows after a short or omitted dry period

Hoeij

Dijkstra

Bruckmaier

et al. 2017

Journal of Dairy Science

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Omitting the dry period (DP) generally reduces milk production in the subsequent lactation. The aim of this study was to evaluate the effect of dietary energy source-glucogenic (G) or lipogenic (L)-and energy level-standard (std) or low-on milk production; energy balance (EB); lactogenic hormones insulin, insulin-like growth factor 1 (IGF-1), and growth hormone (GH); and lactation curve characteristics between wk 1 and 44 postpartum in cows after a 0-d or 30-d DP. Cows (n = 110) were assigned randomly to 3 transition treatments: a 30-d DP with a standard energy level required for expected milk yield [30-d DP(std)], a 0-d DP with the same energy level as cows with a 30-d DP [0-d DP(std)], and a 0-d DP with a low energy level [0-d DP(low)]. In wk 1 to 7, cows were fed the same basal ration but the level of concentrate increased to 6.7 kg/d for cows fed the low energy level and to 8.5 kg/d for cows fed the standard energy level in wk 4. From wk 8 postpartum onward, cows received a G ration (mainly consisting of corn silage and grass silage) or an L ration (mainly consisting of grass silage and sugar beet pulp) with the same energy level contrast (low or std) as in early lactation. Cows fed the G ration had greater milk, lactose, and protein yields, lower milk fat percentage, greater dry matter and energy intakes, and greater plasma IGF-1 concentration compared with cows fed the L ration. Dietary energy source did not affect EB or lactation curve characteristics. In cows with a 0-d DP, the reduced energy level decreased energy intake, EB, and weekly body weight gain, but did not affect milk production or lactation curve characteristics. A 30-d DP resulted in a greater total predicted lactation yield, initial milk yield after calving, peak milk yield, energy intake, energy output in milk, days to conception [only when compared with 0-d DP(low)], plasma GH concentration [only when compared with 0-d DP(std)], and decreased weekly body weight gain compared with a 0-d DP. A 30-d DP decreased both the increasing and the declining slope parameters of the lactation curve and the relative rate of decline in milk yield (indicating greater lactation persistency) compared with a 0-d DP, and decreased plasma insulin and IGF-1 concentration, and EB. In conclusion, feeding a G ration after wk 7 in milk improved energy intake and milk production, but did not affect EB compared with an L ration. For cows without a DP, a reduced dietary energy level did not affect milk production and lactation curve characteristics, but did decrease EB and weekly body weight gain. A 30-d DP increased milk yield and lactation persistency, but decreased milk fat and protein content, EB, and plasma insulin and IGF-1, compared with a 0-d DP.

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Section: Lactogenic Hormonesmentioning

confidence: 79%

Consequences of dietary energy source and energy level on energy balance, lactogenic hormones, and lactation curve characteristics of cows after a short or omitted dry period

Hoeij

Dijkstra

Bruckmaier

et al. 2017

Journal of Dairy Science

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“…Herrier et al (1994) reported that rbST treatment to lactating cows increased the blood concentration of ST and IGF-1. Chen et al (2015) reported that omitting the dry period (0 days) increased the incidence of normal resumption of ovarian cyclicity in dairy cows within 100 DIM compared with a conventional dry period (60 days). Short (<18 days) or long (>24 days) ovarian cycles during the first ovarian cycle postpartum were associated with severe negative energy balance and poor metabolic status in early lactation.…”

Section: Liver Enzymes and Health Biomarkersmentioning

confidence: 99%

Effect of Recombinant Bovine Somatotropin (rbST) and Oxytocin on Health Biomarkers, Reproductive Performance and Milk Composition of Nili-Ravi Buffaloes (Bubalus bubalis)

Shahid¹

2019

PVJ

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“…Additionally, cows with normal ovarian cycles (18-24 days) had greater concentrations of insulin and IGF-1 from 1 to 8 weeks postpartum (CHEN et al, 2015). As explained previously, the study reported herein is a retrospective analysis of the factors associated with ΔBCS and the consequences of ΔBCS to performance.…”

Section: Association Between δBcs and Productive Parametersmentioning

confidence: 84%

“…As explained previously, the study reported herein is a retrospective analysis of the factors associated with ΔBCS and the consequences of ΔBCS to performance. Nonetheless, it is reasonable to speculate that cows with excessive BCS loss during the prepartum period had altered metabolites and hormones concentrations as described by CHEN et al (2015) and SHEEBY et al (2017), which may have led to impaired reproductive performance.…”

Section: Association Between δBcs and Productive Parametersmentioning

confidence: 92%

“…SHEEHY et al (2017) demonstrated that cows that lost BCS during the last 15 d of gestation tended to have greater non-esterified fatty acid concentrations and had reduced insulin concentrations during the prepartum compared with cows that maintained BCS, whereas during the postpartum period cows that lost BCS during the last 15 d of gestation had greater non-esterified fatty acid and BHB concentrations and reduced insulin concentration compared with cows that maintained BCS. CHEN et al (2015) demonstrated that cows that resumed ovarian cycles before 21 DIM had greater BCS from 1 to 8 weeks postpartum.…”

Section: Association Between δBcs and Productive Parametersmentioning

confidence: 97%

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>b<Association between body condition score change during the dry-period and postpartum health and performance>/b<

Chebel¹

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AcknowledgmentDedico este trabalho a Eliana Carbonari, Rita Fernandes e Mariana Pelissari que me incentivaram a encarar os desafios mais difíceis da minha vida. Espero que a minha gratidão seja reconhecida através das minhas atitudes. Faço uma homenagem póstuma a Roberto Jorge Chebel, a quem devo o amor pela medicina veterinária, o espirito inquisitivo, e a coragem de me aventurar em terras distantes. Agradeço, de maneira póstuma, a Wylma Carbonari que me acolheu como um filho e até o fim me encorajou para que me tornasse um homem melhor.Agradeço a José Eduardo Santos, Klibs Galvão, Gláucio Lopes, Luís Mendonça e Todd Bilby que se tornaram irmãos nesta caminhada árdua, mas inexplicavelmente gratificante.Finalmente, não posso eximir-me de agradecer profundamente ao Prof. Dr. Pietro Sampaio Baruselli pela oportunidade conferida, pelos ensinamentos, e pela amizade.Digo que os anos que passaram me fizeram mais calejado, mas também me ensinaram a aceitar de maneira mais calma a mim mesmo e as pessoas que me cercam. Longe de ser perfeito, sinto prazer em evoluir nas mais diversas áreas da vida, mesmo com os constantes retrocessos. Meu compromisso sempre será buscar conhecimento que seja relevante à comunidade científica e, principalmente, aos produtores e à sociedade que servimos. Espero que meus colegas e alunos me alertem quando este objetivo já não for mais minha prioridade evidente, para que eu possa me retirar com dignidade. Não quero apenas criar hipóteses para poder prová-las, quero que a minha relação com produtores, colegas e alunos me incentive a criar e responder hipóteses de fato relevantes. Prefiro publicar algo que esteja errado do que publicar algo que não tem importância. RESUMO CHEBEL, R. C. Associação entre mudança de condição corporal no período seco e saúde e performance pós-parto. 2018. 58 f. Tese (Doutorado) -Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, 2018. A transição entre os períodos seco e lactante é fundamental para a saúde e performance de vacas leiteiras. Comumente em propriedades rurais, as condições de manejo de animais no período de transição são inapropriadas (i.e. estresse calórico, disponibilidade de alimento e água limitada), aumentando o risco de doenças peri-parto e redução na produção de leite. O escore de condição corporal (ECC) determina subjetivamente a quantidade de tecido adiposo subcutâneo de um animal, enquanto a mudança de ECC indica subjetivamente o balanço energético do mesmo, já que uma mudança de 0,25 unidade no ECC representa uma mudança de aproximadamente 18 kg no peso corporal. Os objetivos do presente estudo foram determinar a associação entre a alteração do escore de condição corporal durante o período seco (ΔECC) e a saúde pós-parto e o desempenho reprodutivo e produtivo de vacas holandesas. Dados de 16.104 lactações de 9.950 vacas de duas fazendas leiteiras localizadas no Vale de São Joaquim da Califórnia foram utilizados. Em cada fazenda, as vacas foram classificadas quanto ao ECC no momento da secagem e do parto pelos ...

show abstract

Relationship between metabolism and ovarian activity in dairy cows with different dry period lengths

Cited by 36 publications

References 55 publications

Consequences of dietary energy source and energy level on energy balance, lactogenic hormones, and lactation curve characteristics of cows after a short or omitted dry period

Consequences of dietary energy source and energy level on energy balance, lactogenic hormones, and lactation curve characteristics of cows after a short or omitted dry period

Effect of Recombinant Bovine Somatotropin (rbST) and Oxytocin on Health Biomarkers, Reproductive Performance and Milk Composition of Nili-Ravi Buffaloes (Bubalus bubalis)

>b<Association between body condition score change during the dry-period and postpartum health and performance>/b<

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