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Efficacy of oral feeding of combined preparation of progesterone and oestrogen on the induction of oestrus in Frieswal females

Indian Agricultural Research Journals

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Title Efficacy of oral feeding of combined preparation of progesterone and oestrogen on the induction of oestrus in Frieswal females
 
Creator MATHUR, A K
PRASAD, R
SHARMA, SUKBHIR
 
Subject Anoestrus; Fertility; Frieswal heifers; Minerals; Progesterone
 
Description Delayed puberty and prolonged anoestrus are the most frustrating problems in crossbred cattle. To overcome this problem in Frieswal females 3 trials were conducted. In the first trial 7 heifers having mean age 23.6±2.4 months were fed a combination of progesterone and oestrogen (1.2 mg levonorgestrel + 0.24 mg ethinylestradiol) along with a mineral mixture @ 40g/day/head for 10 days. In the second trial same treatment was repeated in 10 heifers (mean age 28.2±2.32 months). In the third trial 20 Frieswal fermales having mean age 56.59±5.50 months were fed combined preparation of progesterone and oestrogen (1.2 mg norgestrel + 0.24 ethinylestradiol) per day along with 50g of mineral mixture chillated/head/day for 10 days, whereas 6 heifers were kept as control. Oestrus was observed daily twice in the morning and evening throughout the experimental period with the help of a teaser bull. It was observed that trial in 1, 2 and 3; 71.4, 70.0 and 80% females exhibited oestrus within 45 days.However, in control group only 33% heifers exhibited estrus after 11.5±4.5 days. The estimation of copper and zinc indicated that concentration of these minerals were sub normal in all the treatment groups before the start of the experiment. These studies indicated that feeding of combined preparation of progesterone and estrogen can be used as the most economical and convenient method to overcome the problem of anoestrus in Frieswal females.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Contributor —
 
Date 2011-11-14
 
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/12657
 
Source The Indian Journal of Animal Sciences; Vol 81, No 11 (2011)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/12657/6330
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences