Reproductive management of postpartum cows

Roche, J. F.; Mackey, David R.; Diskin, M.

doi:10.1016/s0378-4320(00)00107-x

Cited by 203 publications

(173 citation statements)

References 20 publications

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“…These results would reflect the similar changes in body weight and body condition showed by the groups. It is well known that body condition and body weight are functional indicators of energy status and rebreeding performance after calving (Randel 1990) and that the rate of body condition losses after calving may be more influential on reproductive performance than absolute body condition score at calving (Roche et al 2000). Even though pregnancy rates found in the present experiment seemed to be low, they are consistent with pregnancy rates found at early lactation (90 days postpartum) in DP cows at the same experimental station (Aguilar-Pérez et al 2009a, 2009b.…”

Section: Resultssupporting

confidence: 81%

Milk production and reproduction of dual-purpose cows with a restricted concentrate allowance and access to an association ofLeucaena leucocephalaandCynodon nlemfuensis

Peniche-González

González-López

Aguilar-Pérez

et al. 2014

Journal of Applied Animal Research

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The aim of the study was to evaluate the productive and reproductive performance of dual-purpose (DP) cows with a restricted concentrate allowance and access to a forage association of Leucaena (Leucaena leucocephala) and Stargrass (Cynodon nlemfuensis). Twenty-four multiparous Holstein × Zebu cows were used during the first 98 days postpartum. .97 ± 0.6, TL = 11.9 0.6) with a similar composition (P > 0.05). There were no differences (P > 0.05) between treatments for changes in live weight (CT −29.6 kg, LT −33.3 kg) and body condition (CT −1.3, LT −1.4, in a 1-9 scale). Population of ovarian follicles per cow was similar between treatments throughout the experiment. Pregnancy rate was 33% for CT and 25% for LT, with no significant differences (P > 0.05). Grazing an association of Leucaena and Stargrass can replace part of the concentrate without detrimental effects on production and reproduction in DP cows.

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Section: Resultssupporting

confidence: 81%

Milk production and reproduction of dual-purpose cows with a restricted concentrate allowance and access to an association ofLeucaena leucocephalaandCynodon nlemfuensis

Peniche-González

González-López

Aguilar-Pérez

et al. 2014

Journal of Applied Animal Research

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“…SR cows were not found to be affected by different milk yield levels, while SH cows in loose-housing system, in accordance with Lopez et al (2004), tended to have a decreasing OI with increasing milk yield levels. Lower CR in SH could be due to stronger selection for milk yield in SH cows and/or a negative energy balance (NEB), which could result in impaired follicle development and ovulation, fewer oestrous symptoms and a delay in the recovery of the uterine tissue, which is often seen in high-producing dairy cows (Butler, 2000;Roche et al, 2000;Rodriguez-Martinez et al, 2008). Swedish Holstein cows tend to prioritize milk yield and go into a faster and deeper NEB than SR cows (Berglund & Danell, 1987;Hjertén, 2006).…”

Section: Discussionmentioning

confidence: 99%

A longitudinal study of oestrous characteristics and conception in tie-stalled and loose-housed Swedish dairy cows

Nyman

Malm

Gustafsson

et al. 2016

Acta Agriculturae Scandinavica, Section A — Animal Science

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The presence and importance of visual oestrous symptoms and the relation to conception, breed, housing system and milk yield were studied. Data were collected from a Swedish research herd during a 16-year period. Local, secondary and primary oestrous symptoms and an overall oestrus intensity score (OI) were studied. Decreasing trends in oestrous expression and conception rates (CR), and an increase in CR with more intensive oestrus, from 24% at OI score one (very week) to 54% at OI score five (very strong) were observed. The mean interval from first to last observed oestrus symptom was long with a large variation (54 ± SD = 32 h). Generally, irrespectively of housing system, Swedish Red cows had higher CR, more intensive oestruses and longer oestrus durations compared to Swedish Holstein cows. Local oestrous symptoms, with CR of 24-28%, were most frequently detected, which is why more attention should be paid to local oestrous symptoms.ARTICLE HISTORY

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“…In acute episodes, chemical mediators (cytokines, interleukins and tumor necrosis factor) and lypopolissacarides released by Gram negative bacteria may lead to reduction in appetite and feed intake (Ingvartsen & Andersen, 2000;Nikolic et al, 2003). In such cases, prolonged CCI would result from a negative energy balance due to the high metabolic burden needed for milk production (Roche et al, 2000;Dobson et al, 2007), which enhances the metabolic demand of many substances, such as estrogens (Butler, 2000;Lopez et al, 2004). So, cows with high daily milk production may present absent or irregular ovarian activity and, thus, less intense estrus expression than those with lower daily milk production (Roche et al, 2000;Lopez et al, 2004).…”

Section: Herdmentioning

confidence: 99%

Association of the occurrence of some diseases with reproductive performance and milk production of dairy herds in southern Brazil

Filho¹,

Schiavon²,

Gastal³

et al. 2012

R. Bras. Zootec.

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-This study analyzed associations between the occurrence of mastitis, metritis and retained placenta with the reproductive performance and milk production of four Holstein dairy herds of southern Brazil. Calving-to-conception intervals (CCI) and daily milk production were compared across herds, number of artificial inseminations and clinical occurrences and occurrence of mastitis, metritis and retained placenta. The CCI of cows with three or more clinical occurrences was longer than for those with no occurrences, but shorter for cows with retained placenta than for those without it. Cows with clinical mastitis up to 60 days post-partum had shorter CCI than those with mastitis after 60 days. Cows with retained placenta also had higher frequency of metritis. The daily milk production was higher for cows with three or more clinical occurrences than for those with one or none and for those without retained placenta than for those with retained placenta.A high number of clinical occurrences was related to prolonged CCI and increased daily milk production.

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Reproductive management of postpartum cows

Cited by 203 publications

References 20 publications

Milk production and reproduction of dual-purpose cows with a restricted concentrate allowance and access to an association ofLeucaena leucocephalaandCynodon nlemfuensis

Milk production and reproduction of dual-purpose cows with a restricted concentrate allowance and access to an association ofLeucaena leucocephalaandCynodon nlemfuensis

A longitudinal study of oestrous characteristics and conception in tie-stalled and loose-housed Swedish dairy cows

Association of the occurrence of some diseases with reproductive performance and milk production of dairy herds in southern Brazil

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