17 THE EFFECT OF EXOGENOUS PROGESTERONE ON CONCEPTION RATE OF COOLED COWS DURING THE SUMMER AND AUTUMN

2009 ◽  
Vol 21 (1) ◽  
pp. 108 ◽  
Author(s):  
D. Wolfenson ◽  
E. Friedman ◽  
Y. Lavon ◽  
Z. Roth
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Visual Observation ◽  
Conception Rate ◽  
Uterine Disease ◽  
Variable Effect ◽  
Lactating Cows ◽  
Condition Score ◽  
Commercial Farms ◽  
Exogenous Progesterone

Dairy cows exhibit low concentrations of plasma progesterone during the summer. The effect of exogenous progesterone supplementation postinsemination (AI) in the summer on conception is equivocal. Moreover, the variability among studies in thermal stress severity contributes to the variable effect of exogenous progesterone on summer fertility. This study examined the effect of supplementing exogenous progesterone post-AI during the summer and autumn on conception rate of lactating cows that were efficiently cooled during the hot season. The study was conducted in Israel on 2 commercial farms of high-milk-producing cows, yielding, on average, 41.3 kg of milk day–1 around AI (124 days postpartum). These farms were equipped with efficient cooling systems along the feeding line and in the holding area. Mean body temperatures during the afternoon and evening hours in summer (air temperature and relative humidity of 30 to 32°C and 41 to 57%) were 39.1 ± 0.1°C, with a peak value of 39.5°C. Cows at first, second, or third AI that were inseminated after estrus (Day 0; detected by visual observation and computerized pedometric system; Afimilk, Israel) from July to August (summer) or September to October (fall) were included in the study (n = 377 cows). Treated cows (n = 181 cows) were fitted with an intravaginal device containing progesterone (CIDR) on Day 5 ± 1 after AI for 12 days; the device was removed on Day 17. Administration of the CIDR increased progesterone concentration by 2.3 ng mL–1 (P < 0.05). Conception rates were analyzed by a logistic regression procedure. Overall, the CIDR treatment increased conception rate by 6% compared with controls (39 v. 33%; NS). Day of CIDR insertion tended to affect conception rate (43, 39, and 34% for Days 4, 5, and 6, respectively; NS). The CIDR treatment significantly increased, compared with the control (+23%, P < 0.05), the conception rate of cows with a low body condition score at peak lactation (49.3 v. 26.6%). Similarly, the CIDR significantly increased (+22%, P < 0.05) the conception rate of cows that exhibited a uterine disorder at parturition (46.3 v. 24.6% in untreated control cows). The CIDR treatment also increased conception rate (NS) in the fall (+13%) in mature cows (+8%) and in the first AI (+12%). Similarly, cows treated with a CIDR before Day 120 postpartum, or cows yielding less than 40 kg of milk day–1 exhibited a numerically higher (+8%; NS) conception rate. Results indicated that exogenous progesterone administered post-AI increases conception during the summer and autumn in efficiently cooled cows during the hot months. The most beneficial effect was documented in cows that had been diagnosed as having a uterine disease postpartum, and in those that exhibited a low body condition score.

scholarly journals Body Condition Score and Milk Production on Conception Rate of Cows under a Small-Scale Dairy System

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 800
Author(s):  
Luis Javier Montiel-Olguín ◽  
Felipe J. Ruiz-López ◽  
Miguel Mellado ◽  
Eliab Estrada-Cortés ◽  
Sergio Gómez-Rosales ◽  
...  
Keyword(s):  
Milk Production ◽  
Body Condition ◽  
Body Condition Score ◽  
Metabolic Stress ◽  
Dairy Farms ◽  
Conception Rate ◽  
Small Scale ◽  
Condition Score ◽  
The Impact ◽  
Small Scale Dairy

Management and production characteristics impact conception rate to first service (CR1S) in small-scale dairy farms, but the impact of body condition score (BCS) and milk production levels on cows’ fertility is unknown. Our objective is to determine the effect of BCS and milk production on CR1S in small-scale dairy farms of western Mexico. Logistic regression models are used to determine the effect of BCS (at calving and first service), 60-d and 305-d milk production, protein and fat production, lactation number, and days at first service on CR1S. BCS at calving does not affect CR1S in cows with three or more lactations (39.5%; p > 0.1). However, first-lactation cows with BCS < 3.0 at calving and second lactation cows with BCS ≤ 2.5 at calving have higher CR1S (63.2 and 67.9%, respectively; p < 0.1). This result is perhaps due to reduced milk production, which leads to lower metabolic stress. BCS ≤ 2.5 at calving is associated (p < 0.05) with a reduced milk yield, explaining partially the observed higher CR1S in these groups. Cows with BCS ≤ 2.5 at first service in the higher quartile of 60-d milk production (≥ 28kg/day) show lower CR1S (23.9 and 51.1%, respectively; p < 0.01). In conclusion, BCS at calving and at first service, 60-d milk production, and lactation number are factors associated with CR1S.

scholarly journals Effects of parity and body condition score (BCS) on oestrus expressions and post breeding reproductive performance of Katjang crossbred goat

2021 ◽  
Vol 6 (2) ◽  
pp. 80-87
Author(s):  
Intan Sofienaz Ahmad Fuad ◽  
Khairiyah Mat ◽  
Nor Dini Rusli ◽  
Hasnita Che Harun
Keyword(s):  
Litter Size ◽  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Fertilization Rate ◽  
Visual Observation ◽  
Gestation Length ◽  
Progesterone Concentration ◽  
Condition Score ◽  
Embryonic Loss

This experiment goal was to identify the effect of parity and body condition score (BCS) on oestrusexpressions (OE), post breeding reproductive performance (PBRP) of Katjang crossbred andchanges of progesterone (P4) concentration. Twenty-four does were treated with 14 dayssynchronisation followed by visual observation of oestrus expressions (standing heat (SH),mounted by other buck but not standing (MBNS), vocalization (VC), tail swaging (TW), andsniffing of the genital of other buck (SGB)) and blood sampling twice daily up to 72 hours followingControl Internal Drug Release (CIDR) removal. PBRP data was recorded for evaluation whichincluded pregnancy rate (PR), abortion rate (AR), mortality rate (MR), litter size (LS), litter birthweight (LBW) and gestation length (GL). Result revealed that there was no significant effect(P>0.05) of parity and BCS on OE, PBRP and progesterone concentration except for birth weightwhich had been affected by parity. Based on observation of OE of SH, it was found that accuracyof pregnancy prediction was up to 50%. Analysis of OE established reliability of OE in wassequence from SH>SGB>TW>MBNS>VC and onset of oestrus began approximately 33h post toCIDR removal. Analysis of PBRP shown parity?2 had heavier birth weight in single litter size thanparity?3 which was associated with no MR. Progesterone concentration indicated all of the doeswere on oestrus and highly susceptible as early as 48 h post to CIDR removal. In conclusion, thisstudy demonstrated that both non-genetic factors; parity and BCS are very poor in determining theeffect of OE, PBRP and P4 concentration due to limitation of sample size and greater influences ofexternal factors such as weather, extreme environmental condition and farm management. It isrecommended to improve program in future by focusing on enhancing the fertilization rate andreducing embryonic loss for optimum conception rate.

scholarly journals The Effect of Body Condition Score on the Biochemical Blood Indices and Reproductive Performance of Dairy Cows

2016 ◽  
Vol 16 (1) ◽  
pp. 129-143 ◽  
Author(s):  
Barbara Stefańska ◽  
Włodzimierz Nowak ◽  
Ewa Pruszyńska-Oszmałek ◽  
Robert Mikuła ◽  
Daniel Stanisławski ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Body Condition ◽  
Reproductive Performance ◽  
Body Condition Score ◽  
Conception Rate ◽  
Early Lactation ◽  
Blood Indices ◽  
Igf I ◽  
Condition Score ◽  
Days Open

Abstract The aim of the study was to investigate the effect of BCS (Body Condition Score) on the calving day and its decrease during early lactation on the biochemical blood indices and reproductive performance. One hundred and thirty-one Polish Holstein-Friesian cows were divided into three groups according to the North-American body condition score on the calving day (AC≤3.5 point BCS; MID 3.51-3.75 point BCS; FAT>3.75 point BCS) and according to the decrease in BCS during early lactation (HG >0.49 point BCS; WEL 0.49-0.25 point BCS, L<0.25 point BCS). In current study, significant interaction between change of BCS during early lactation and time of blood sampling on BHBA concentration was observed. In the AC group (≤3.5 BCS), the highest concentrations of glucose on 3 and 5 d of lactation compared to the MID and FAT groups and of insulin on 28 d and also IGF-I on 5 and 28 d of lactation compared to the FAT group were recorded. In the FAT group, the highest concentration of NEFA on 3 and 5 d compared to the AC group and of BHBA on 28 d of lactation compared to the MID group was recorded. The body condition score on the parturition day affected the reproductive performance; in the FAT group (>3.75 BCS) the lowest conception rate of the first insemination, insemination index and thereby the longest days open were observed. The highest decreases in BCS (HG >0.49 points) resulted in increased concentrations of NEFA on 3 d and of BHBA on 3 and 5 d. Moreover, in the HG group, the lowest concentration of T3 on 3, 5 and 28 d as compared to the WEL group was recorded. We concluded that the BCS (>3.5 points) on the calving day had a significantly negative effect on the metabolic status of dairy cows in the postpartum period estimated by the concentration of biochemical blood indices characterising carbohydrates (IGF-I, insulin) and lipid (NEFA, BHBA) metabolism and also the reproductive performance such as the conception rate of the first insemination, insemination index, days open. We suggested that the blood serum concentrations of IGF-I and NEFA were the most sensitive biochemical markers of the metabolic status of dairy cows in our study.

Relationship of Body Condition Score at Estrus and Conception Rate in Graded Murrah Buffaloes

2016 ◽  
Vol 6 (5) ◽  
pp. 829 ◽  
Author(s):  
M. Praveen Raj ◽  
G. Venkata Naidu ◽  
M. Srinivas ◽  
M. Raghunath ◽  
K. Ananda Rao
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Conception Rate ◽  
Murrah Buffaloes ◽  
Condition Score ◽  
Relationship Of

scholarly journals Influence of Body Condition Score, blood ammonia and serum urea levels on conception rate in Italian Mediterranean buffaloes

2005 ◽  
Vol 4 (sup2) ◽  
pp. 313-315 ◽  
Author(s):  
G. Campanile ◽  
G. Neglia ◽  
C. Grassi ◽  
B. Gasparrini ◽  
R. Di Palo ◽  
...  
Keyword(s):  
Body Condition ◽  
Body Condition Score ◽  
Conception Rate ◽  
Blood Ammonia ◽  
Serum Urea ◽  
Condition Score

scholarly journals Effect of pegbovigrastim on clinical mastitis and uterine disease during a full lactation in grazing dairy cows

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0252418
Author(s):  
Joaquín Barca ◽  
Ana Meikle ◽  
Mette Bouman ◽  
Giovanni Gnemmi ◽  
Rodrigo Ruiz ◽  
...  
Keyword(s):  
Body Condition ◽  
Treatment Effects ◽  
Body Condition Score ◽  
Controlled Trial ◽  
Healing Process ◽  
Clinical Mastitis ◽  
Uterine Disease ◽  
First Case ◽  
Condition Score ◽  
Peg Treatment

In this randomized controlled trial on four commercial grazing dairy farms, we investigated whether pegbovigrastim (PEG) treatment affects clinical mastitis (CM) and uterine disease (i.e. retained placenta (RP), metritis and endometritis) occurrence during a full lactation. The association of prepartum body condition score and prepartum non-esterified fatty acid (NEFA) concentration with disease occurrence was also evaluated. Holstein cows were randomly assigned to one of two treatments: first PEG dose approximately 7 d before the expected calving date and a second dose within 24 h after calving (PEG) compared to untreated controls (Control). In total, 2,153 animals were included in the study: 733 primiparous cows (Control = 391, PEG = 342) and 1420 multiparous cows (Control = 723, PEG = 697). Treatment effects were evaluated with generalized linear mixed models and Cox’s proportional hazard models. Treatment with PEG reduced the occurrence of a first case of CM during the first 30 days in milk (DIM) by 24.6% and reduced the hazard of a first case and the rate of total cases of CM during the full lactation. All PEG treatment effects were independent of parity. Prepartum body condition score interacted with PEG treatment: in over-conditioned cows, PEG reduced the occurrence of a first case of CM during the first 30 DIM by 49.5%. The hazard analysis of a first case of CM during the full lactation suggested that the preventive effect of PEG disappeared with increasing DIM. Treatment with PEG did not affect the occurrence of RP or metritis. Pegbovigrastim treated cows with metritis subsequently showed a reduced occurrence of endometritis compared to control cows with metritis. Pegbovigrastim reduces the occurrence of CM particularly in cows at risk of elevated lipid mobilization, and PEG ameliorates the uterine healing process in cows that experienced metritis.

Sign in / Sign up

Export Citation Format

Share Document