Investigation by meta-analysis of the effect of prostaglandin F2 alpha administered post partum on the reproductive performance of dairy cattle

1995 ◽  
Vol 136 (4) ◽  
pp. 90-94 ◽  
Author(s):  
N. Burton ◽  
I. Lean
Keyword(s):  
Dairy Cattle ◽  
Reproductive Performance ◽  
Post Partum ◽  
Meta Analysis ◽  
Prostaglandin F2 Alpha

Monitoring reproductive performance in beef suckler cows by milk progesterone analysis.

1998 ◽  
Vol 1998 ◽  
pp. 189-189
Author(s):  
G.E. Mann ◽  
R. Keatinge ◽  
M. Hunter ◽  
B.A. Hedley ◽  
G.E. Lamming
Keyword(s):  
Dairy Cattle ◽  
Reproductive Cycle ◽  
Reproductive Performance ◽  
Post Partum ◽  
Valuable Insight ◽  
Beef Suckler ◽  
Insight Into

Milk progesterone monitoring in dairy cattle has provided a valuable insight into the reproductive cycle during the post-partum and mating periods (Lamming et al., 1981; Darwash and Lamming, 1997). In this study a similar approach was applied to suckler cows. The objective was to compare the reproductive performance of two contrasting genotypes with a view to improving output from commercial herds. Such herds produce an average of 91 live calves per 100 cows mated (MLC, 1996).

scholarly journals Oestrus synchronisation in postpartum dairy cows using repetitive prostaglandin doses: Comparison between D-cloprostenol and dinoprost

2015 ◽  
Vol 63 (1) ◽  
pp. 79-88
Author(s):  
Carlos Pérez-Marín ◽  
Jose Sánchez ◽  
Guillermo Vizuete ◽  
Luis Quintela ◽  
Laura Molina
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Reproductive Performance ◽  
Artificial Insemination ◽  
Post Partum ◽  
Study Groups ◽  
Pregnancy Rates ◽  
Group Differences ◽  
Group A ◽  
Group B

This trial evaluated the reproductive performance in an early routine oestrus induction programme using two different PGF2α preparations in dairy cattle. D-cloprostenol sodium (n = 192; Group A) or dinoprost (n = 187; Group B) was administered between days 35 and 42 post partum. Also, a group of non-treated cows (n = 135; Group C) was included as control. Pedometers were used to detect oestrus, and also secondary oestrous signs and vaginal mucus quality were assessed prior to artificial insemination (AI). When oestrus was not detected for 14 days after PGF2α administration, the treatment was repeated, up to a maximum of three times. There were no differences between the study groups in oestrus detection (A = 73.48%, B = 73.01%, C = 79.26%; P = 0.428), good mucus quality (A = 96.45%, B = 91.30%, C = 93.45%; P = 0.203) and the presence of mounting lesions (A = 98.58, B = 94.93%, C = 98.13; P = 0.414). First-service pregnancy rates were 19.78%, 15.64% and 32.03% in Groups A, B and C, respectively (P = 0.003). There were no inter-group differences for the interval from parturition to first AI. However, a significantly shorter interval from parturition to conception (92.17 days, 99.45 days, 118.93 days; P = 0.002) and significantly less services per conception (2.12, 2.18, 2.66; P = 0.003) were observed in Groups A and B in comparison with Group C. The use of PGF2α resulted in better fertility in a repetitive, routine postpartum programme, although no differences between Dcloprostenol and dinoprost were detected.

Monitoring reproductive performance in beef suckler cows by milk progesterone analysis.

1998 ◽  
Vol 1998 ◽  
pp. 189-189 ◽  
Author(s):  
G.E. Mann ◽  
R. Keatinge ◽  
M. Hunter ◽  
B.A. Hedley ◽  
G.E. Lamming
Keyword(s):  
Dairy Cattle ◽  
Reproductive Cycle ◽  
Reproductive Performance ◽  
Post Partum ◽  
Valuable Insight ◽  
Beef Suckler ◽  
Insight Into

Milk progesterone monitoring in dairy cattle has provided a valuable insight into the reproductive cycle during the post-partum and mating periods (Lamming et al., 1981; Darwash and Lamming, 1997). In this study a similar approach was applied to suckler cows. The objective was to compare the reproductive performance of two contrasting genotypes with a view to improving output from commercial herds. Such herds produce an average of 91 live calves per 100 cows mated (MLC, 1996).

Akodon molinae (Rodentia Cricetidae), a new laboratory animal: breeding, management and reproductive performance

1980 ◽  
Vol 14 (2) ◽  
pp. 129-131 ◽  
Author(s):  
Maria Susana Merani ◽  
Marta Susana Lizarralde
Keyword(s):  
Sex Ratio ◽  
Reproductive Performance ◽  
Sexual Maturity ◽  
Laboratory Animal ◽  
Post Partum ◽  
Animal Breeding ◽  
Haemorrhagic Fever ◽  
Sex Ratio At Birth ◽  
Breeding Management ◽  
Laboratory Colony

Akodon molinae, a vole mouse widely distributed in central Argentina, shows remarkable chromosome polymorphisms. It is one of the natural reservoirs of the actiologic agent of haemorrhagic fever, and a laboratory colony could be of great help in investigating this disease. Pregnancy lasted 23 (range 21-25) days. Litters of 4-5 young were born to monogamous breeding pairs about every 30 days, with weaning at 26 days post partum. The sex ratio at birth was 505 males to 500 females: at weaning it was 460 to 440. Sexual maturity was attained at about 16 weeks of age in males and 12-20 weeks in females. Akodon molinae is easy to handle, but fighting and killing or neglect of young are problems.

Liver fatty acid metabolism associations with reproductive performance of dairy cattle

2019 ◽  
Vol 208 ◽  
pp. 106104 ◽  
Author(s):  
Emmanuel Angeli ◽  
Fernanda Mariel Rodríguez ◽  
Florencia Rey ◽  
Gonzalo Santiago ◽  
Valentina Matiller ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dairy Cattle ◽  
Fatty Acid Metabolism ◽  
Reproductive Performance ◽  
Acid Metabolism ◽  
Liver Fatty Acid
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