Toward improved postpartum cyclicity of primiparous dairy cows: Effects of genetic merit for production traits under contrasting feeding systems

Bédère, Nicolas; Delaby, Luc; Ducrocq, Vincent; Leurent-Colette, Ségolène; Disenhaus, Catherine

doi:10.3168/jds.2015-9843

Cited by 5 publications

(8 citation statements)

References 33 publications

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“…The metabolites recorded in the present study suggest that cows were in an acceptable energy balance as the mean values are within the threshold of healthy cows as mentioned previously. Findings similar to those of O' Sullivan et al (2019b) and other studies (Walsh et al, 2008;Bedere et al, 2016) were found in the present study, where progesterone variables used to identify PPAI were not affected by genotype. The poor fertility subindex in this study is just below the current national average (26.5 vs. 37.6, ICBF) and did not have a negative effect on the uterine recovery parameters recorded.…”

Section: Genetic Effectsupporting

confidence: 92%

The effect of nutritional management in early lactation and dairy cow genotype on milk production, metabolic status, and uterine recovery in a pasture-based system

Brady

Pierce

Lynch

et al. 2021

Journal of Dairy Science

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High levels of milk production coupled with low feed intake cause negative energy balance in early lactation, especially in the first month postpartum (PP). Therefore, specific nutritional management at this time may improve nutritional and metabolic status with the possibility of contrasting genotypes responding differently. Thus, the objective of this study was to compare the effects of nutritional management strategies and dairy cow genotype on milk production, metabolic status, and some fertility parameters during early lactation in a pasture-based system. Sixty Holstein Friesian cows were blocked on parity and genotype [low-fertility highmilk (LFHM) and high-fertility low-milk (HFLM)] and were randomly assigned to 1 of 2 treatments in a 2 × 2 factorial arrangement, in a randomized complete block design based on calving date, previous 305-d milk yield, and precalving body condition score (BCS). The nutritional management treatments were: (1) ad libitum access to fresh pasture plus an allowance of 3 kg of concentrates per day (CTR, n = 30); and (2) ab libitum access to a tailored total mixed ration (TMR, n = 30). These diets were offered for the first 30 d PP. Following the first 30 d PP, cows fed TMR joined the CTR treatment and were managed similarly until 100 d PP. Blood samples were taken at d 7, 14, 21, and 28 PP to determine metabolic status. Milk samples for composition analysis were collected weekly and BCS assessed every 2 wk. Genotype had a significant effect on milk output, whereas LFHM had increased fat (+0.28 kg/d) and fat-plus-protein (+0.17 kg/d) yield in the first 30 d PP compared with HFLM cows. The LFHM group also exhibited higher protein and lactose yields over the first 100 d PP. Nutritional management did create significant differences in milk composition in the first 30 d: TMR cows had lower protein, milk urea nitrogen, and casein concentration and higher lactose concentration than CTR cows. Over the first 100 d PP, TMR cows had higher fat-plus-protein and lactose yields. Feeding TMR reduced concentrations of nonesterified fatty acids (−0.12 mmol/L) and β-hydroxybutyric acid (−0.10 mmol/L) compared with the CTR group. Cows fed TMR had smaller BCS losses from calving to 60 d PP. There was no effect of any treatment on uterine recovery. Cows in the LFHM group demonstrated greater milk production in the first 30 and 100 d in milk. These results demonstrate that feeding cows a TMR for the first month of lactation has positive effects on milk output, metabolic status, and BCS profile.

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Section: Genetic Effectsupporting

confidence: 92%

The effect of nutritional management in early lactation and dairy cow genotype on milk production, metabolic status, and uterine recovery in a pasture-based system

Brady

Pierce

Lynch

et al. 2021

Journal of Dairy Science

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“…Indeed, Nebel and McGilliard (1993) and Bello et al (2013) found that herds with high genetic merit for milk yield had poor fertility status, which was not observed between cows within herds. Our results show that, in both breeds, cows in the milk group have delayed cyclicity compared with the content group (Bedere et al, 2016a). Further studies are needed to confirm whether cows in the content group have impaired fertility because selecting for fat content may have impaired embryo survival or not.…”

mentioning

confidence: 71%

“…It can be hypothesized that dairy cows with high genetic merit for fat and protein content preserve their reproductive performance while producing the same amount of milk solids than cows with high genetic merit for milk yield. A previous study showed that primiparous dairy cows with high genetic merit for fat and protein content had an earlier commencement of luteal activity than those with high genetic merit for milk yield in 2 contrasted breeds (dairy vs. dual-purpose cows) and 2 contrasted feeding systems (high vs. low inputs; Bedere et al, 2016a). This was a promising result to establish strategies to cope with reproductive decline and maintain productive performance.…”

Section: Introductionmentioning

confidence: 96%

“…Mobilization results in high plasma concentrations of fatty acids that are used as energy supply, but they also damage oocytes and endometrium, causing embryonic death (Santos et al, 2004;Friggens et al, 2010;Wathes et al, 2012). In our previous study, we showed that primiparous Holstein cows in the content group under the low FS had the lowest BW (Bedere et al, 2016a). According to their BCS, all Holstein cows suffered from a more severe and prolonged negative energy balance than Normande cows.…”

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confidence: 94%

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Ability of dairy cows to ensure pregnancy according to breed and genetic merit for production traits under contrasted pasture-based systems

Bédère

Disenhaus

Ducrocq

et al. 2017

Journal of Dairy Science

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The present study aimed to assess and measure the effects of breed, genetic merit for production traits, and feeding systems (FS) on the ability of dairy cows to ensure pregnancy through its components (fertilization, embryonic losses, recalving). An experiment was conducted over 9 yr on Normande and Holstein cows assigned to contrasted FS. Diets were based on maize silage in winter and grazing plus concentrate in spring in the high FS group, and on grass silage in winter and grazing with no concentrate during spring in the low FS group. Within breeds, cows were classified into 2 groups with similar estimated breeding values (EBV) for milk solids: cows with high EBV for milk yield were included in a milk group and those with high EBV for fat and protein contents were included in a content group. Holstein cows produced more milk throughout lactation than Normande cows (the differential was greater in the high FS group, +2,294 kg, compared with +1,280 kg in the low FS group) and lost more body condition to nadir (the differential was greater in the high FS group, −1.00 point, compared with −0.80 point in the low FS group). Within breeds, milk solids production was similar between genetic groups. Cows in the high FS group produced more milk (+2,495 kg for Holstein and +1,481 kg for Normande cows) and had a higher body condition score at nadir (+0.40 point for Holstein and +0.60 point for Normande) than cows in the low FS group. Holstein cows had a lower recalving rate than Normande cows (−19 percentage units). We found no effect of genetic group and FS on fertility of Normande cows. However, according to FS, Holstein cows in the content group exhibited different fertility failure patterns. In the low FS group, Holstein cows in the content group had more nonfertilizations or early embryo mortality (+26 percentage units at first and second services) than Holstein cows in the milk group.In the high FS group, Holstein cows in the content group had a higher proportion of late embryo mortality than in the milk group (+10 percentage units at first and second services). We observed no effect of FS on recalving rate; however, indicators of energy balance (protein content or body condition score) were positively associated with successful conception and pregnancy. This suggested a link between genetic merit for fat and protein content and lower ability of dairy cows to ensure pregnancy because of more nonfertilizations and early or late embryo mortality. Key words: dairy cow, genetic merit, fertilization, pregnancy loss INTRODUCTIONIn the past decades, reproductive performance of dairy cows has been declining and the strong genetic selection that was applied on production traits is considered to be responsible for this. Each step of the reproductive step has been affected: abnormal ovarian activity is more common in the current population (Gautam et al., 2010), the duration and intensity of estrus has markedly decreased (Kerbrat and Disenhaus, 2004), and the occurrence of pregnancy losses has increased (Grimard et al...

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“…Pelvic floor dysfunction (PFD), a type of common gynecological disease in women, refers to the pelvic tissues that are affected by various pathogenesis and the external environment. This affects decreased immune ability and weakened structure, which leads to the susceptibility of pelvic organ displacement due to injured tissues, which leads to the abnormal location of organs and induces functional PFD ( 1 – 3 ). Clinical data ( 4 ) indicate that physical rehabilitation therapy, combined with herbal treatment, can effectively enhance pelvic functions and increase perineal muscle strength.…”

Section: Introductionmentioning

confidence: 99%

Observation of the effect of physical rehabilitation therapy combined with the medication on pelvic floor dysfunction

Han

Wang

Qi³

et al. 2017

Exp Ther Med

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We observed the effects of physical rehabilitation therapy combined with medication on pelvic floor dysfunction (PFD). We collected the medical records of 84 maternal patients with PFD who received treatment at the Affiliated Hospital of Hebei University between May 2015 and October 2016. These patients were randomly divided into two groups, the control group (n=42) and observation group (n=42). In the control group, patients received conventional physical rehabilitation therapy while in observation group, patients received the shixiao powder combined with siwu decoction in addition to the physical rehabilitation. The therapeutic effects were compared between the two groups. The total effective rate of the observation group was 97.6%, which was significantly higher than 78.6% in the control group (P<0.05). In observation group, the index scores of pelvic floor function under rest state, such as electromyo-graphy amplitude, contraction force, coordinate strength and urine flow rate, were significantly higher than those in control group (P<0.05). The rate of Grade II perineal muscle strength in the observation group was 7.32%, which was significantly lower than 47.62% in control group (P<0.05). In observation group, the rates of Grade III and Grade IV muscle strength were respectively 43.91 and 29.26%, which were significantly higher than those in control group (P<0.05). Before the administration of treatment, there were no significant differences in the comparison of the urinary incontinence and sexual life quality of patients between the two groups (P>0.05). In observation group, after treatment, the rehabilitation effects of urinary incontinence and sexual life quality at 3 months post-delivery were significantly better than those in control group (P<0.05). Before treatment, there were no significant differences in the comparison of levels of C-reactive protein (CRP) and interleukin-10 (IL-10) between the two groups (P>0.05), however, after treatment, the levels of CRP and IL-10 of patients in observation group were significantly lower than those in control group (P<0.05). In the observation group, the incidence rate of complications (7.14%) were significantly lower than that in control group (23.81%; P<0.05). Therefore, physical rehabilitation therapy combined with the shixiao powder and siwu decoction exhibits significant efficacy in the treatment of PFD by effectively improving the pelvic floor functions, increasing perineal muscle strength, and decreasing expression levels of inflammatory factors, which can significantly ameliorate life quality and reduce the incidence rate of complications. Thus, this treatment method shows great application value in clinical practice.

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Toward improved postpartum cyclicity of primiparous dairy cows: Effects of genetic merit for production traits under contrasting feeding systems

Cited by 5 publications

References 33 publications

The effect of nutritional management in early lactation and dairy cow genotype on milk production, metabolic status, and uterine recovery in a pasture-based system

The effect of nutritional management in early lactation and dairy cow genotype on milk production, metabolic status, and uterine recovery in a pasture-based system

Ability of dairy cows to ensure pregnancy according to breed and genetic merit for production traits under contrasted pasture-based systems

Observation of the effect of physical rehabilitation therapy combined with the medication on pelvic floor dysfunction

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