412 Concentrations of progesterone, estrogen, and insulin in serum during early pregnancy in crossbred Angus beef heifersConcentrations of progesterone, estrogen, and insulin in serum during early pregnancy in crossbred Angus beef heifers

2016 ◽  
Vol 94 (suppl_2) ◽  
pp. 192-193
Author(s):  
T. L. Ellig ◽  
K. J. McLean ◽  
C. R. Dahlen ◽  
P. Borowicz ◽  
L. P. Reynolds ◽  
...  
Keyword(s):  
Early Pregnancy ◽  
Beef Heifers ◽  
Insulin In Serum

Nutrition and early pregnancy in beef heifers: impacts on CAT2 abundance in utero-placental tissues

2019 ◽  
Author(s):  
A.C.B. Menezes ◽  
T.L. Neville ◽  
M.S. Crouse ◽  
K.J. McLean ◽  
A.K. Ward ◽  
...  
Keyword(s):  
Early Pregnancy ◽  
In Utero ◽  
Beef Heifers

Ultrasound monitoring of blood flow and echotexture of the corpus luteum and uterus during early pregnancy of beef heifers

2015 ◽  
Vol 83 (3) ◽  
pp. 449-458 ◽  
Author(s):  
S. Scully ◽  
A.C.O. Evans ◽  
F. Carter ◽  
P. Duffy ◽  
P. Lonergan ◽  
...  
Keyword(s):  
Blood Flow ◽  
Corpus Luteum ◽  
Early Pregnancy ◽  
Beef Heifers ◽  
Ultrasound Monitoring

The effect of foot-and-mouth disease vaccination on early pregnancy loss in beef heifers in Argentina

2019 ◽  
Vol 170 ◽  
pp. 104716
Author(s):  
Fernando J. Marqués ◽  
Eduardo I. Battistessa ◽  
Simon F. Peek ◽  
Sarah M. Raabis ◽  
Benjamin J. Darien
Keyword(s):  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
Early Pregnancy Loss ◽  
Beef Heifers ◽  
Foot And Mouth

457 Effects of protein supplementation with low to medium quality forage on reproductive parameters in beef heifers in early pregnancy

2017 ◽  
Vol 95 (suppl_4) ◽  
pp. 224-224
Author(s):  
A. L. Jones ◽  
E. L. Stephenson ◽  
K. Kruckenburg ◽  
M. Randall ◽  
E. Zwiefelhofer ◽  
...  
Keyword(s):  
Early Pregnancy ◽  
Protein Supplementation ◽  
Reproductive Parameters ◽  
Beef Heifers ◽  
Medium Quality

574 Effects of protein supplementation with low to medium quality forage on intake and circulating amino acids in beef heifers in early pregnancy

2017 ◽  
Vol 95 (suppl_4) ◽  
pp. 281-281
Author(s):  
A. L. Jones ◽  
E. L. Stephenson ◽  
K. Kruckenburg ◽  
M. Randall ◽  
E. Zwiefelhofer ◽  
...  
Keyword(s):  
Amino Acids ◽  
Early Pregnancy ◽  
Protein Supplementation ◽  
Beef Heifers ◽  
Medium Quality

scholarly journals Immunization against Gonadotropin-Releasing Hormone in Female Beef Calves to Avoid Pregnancy at Time of Slaughter

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2071
Author(s):  
Julia Schütz ◽  
Jürn Rudolph ◽  
Adrian Steiner ◽  
Esther Rothenanger ◽  
Jürg Hüsler ◽  
...  
Keyword(s):  
Early Pregnancy ◽  
Serum Cortisol ◽  
Gonadotropin Releasing Hormone ◽  
Control Group ◽  
Stillbirth Rate ◽  
Beef Heifers ◽  
Beef Calves ◽  
Non Invasive ◽  
Measuring Period ◽  
Unwanted Pregnancies

Precocious puberty in beef heifers can result in unwanted pregnancies due to accidental breeding by farm bulls. Inbreeding, premature calving followed by dystocia and a high stillbirth rate or slaughtering of pregnant heifers are the consequences of this behaviour. The aim of the study was to postpone puberty by using Improvac®, an anti-GnRH vaccine. Therefore, n = 25 calves were twice vaccinated, once at the age of 5 and then at 6.5 months. n = 24 calves served as unvaccinated case controls. The onset of puberty was assigned if progesterone analysis in the blood exceeded 1 ng/mL. Progesterone values were excluded if the corresponding serum cortisol levels were ≥60 nmol/L. Our target was met, as in the vaccinated group none of the calves exceeded a progesterone value >1 ng/mL until the scheduled age of slaughter at 11 months and only 12.5% of the animals exceeded a progesterone value of 1 ng/mL over the whole measuring period (>400 days) compared with 56.5% of the calves in the control group. In conclusion, the favourable results from our study using the vaccine Improvac® represent an animal-friendly, non-invasive and reliable way to avoid early pregnancy in heifers as well as the slaughter of pregnant cattle.

Sexual Abuse and Early Pregnancy in Young Women's Lives

1995 ◽  
Vol 40 (9) ◽  
pp. 889-890
Author(s):  
Valerie J. Steffen
Keyword(s):  
Sexual Abuse ◽  
Early Pregnancy ◽  
Women's Lives
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