Record Details

lnvestigations on repeat breeding crossbred cattle with history of prolonged estrus

Indian Agricultural Research Journals

View Archive Info
 
 
Field Value
 
Title lnvestigations on repeat breeding crossbred cattle with history of prolonged estrus
 
Creator Dadarwal, Dinesh
Singh, Jagir
Honparkhe, M
Cheede, G S
Kang, R S
 
Subject Cattle; Prolonged estrus; Progesterone; Repeat breeding
 
Description Repeat breeding cattle (22-11 heifers and 11 cows in second to fourth parity) with the history of prolonged estrus (group 1) were examined percentally at 3-5 day intervals for single or 2 consecutive estrous cycles and blood samples were taken on each day of observation to estimate psogesterone profiles. Similar observations were also taken on 6 healthy, regularly cycling animals (4 cows. 7 heifers) selected as control (group 2). The approximate day of ovulation was decided on the basis of day of onset and end of estrus and presence of CL on per-rectal palpation along with the blood plasma progesterone values on day 6 after the end of estrus. A low body condition score (ranging from 2.0-2.5) of the animals showing prolonged estrus than the control animals (3.0-4.0) was observed. Mean estrus period of the repeat breeder animals (3.77±0.87 days) was significantly higher (P<0.05) than the control group (1.O-1.5 day). All the animals (n=22) having prolonged estrus period showed delayed ovulation and out of them, 10 showed mean blood progesterone levels of 0.153±0.087ng/ml during estrus period compared to those of control group (1.52±0.047 ng/ml),w hile 12, cattle showed higher (P<O.05) (0.806±0.623 ng/ml) the suprabasal progesterone levels. The suprabasal progesterone levels during estrus might have casued delayed LH peak and be an important factor in the causation of repeat breeding syndrome.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Date 2005-08-05
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
—
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/9440
 
Source The Indian Journal of Animal Sciences; Vol 75, No 8 (2005)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/9440/4173
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences