DSpace About DSpace Software
 

Repositorio Atenea de la Facultad de Ciencias, UNAM >
Repositorio Ciencias >
FACULTAD DE CIENCIAS >
Ciencias >

Please use this identifier to cite or link to this item: http://hdl.handle.net/11154/3296

Title: Progestagen-induced oestrous response in Holstein cows and its influence on the sexual behaviour of non-treated pen mates
Authors: Galina, CS
Orihuela, A
López, L
Issue Date: 1998
Abstract: Grouped cows with oestrous cycles synchronised by the use of synthetic progestagen (SMB) appear to increase the degree of synchrony among them and this may enhance sexual behaviour in untreated herd mates. One hundred and twenty cycling cows were equally divided among three pens. For the first three days of the experiment, nine cows were induced to display oestrus on each of the three days. On the first day, one cow was programmed in pen 1, in pen 2, and three in pen 3, The following day, the number of cows were three, one, and five, respectively, and on the third day, live, three, and one, in the respective pens. Nine other cows per pen were stimulated to show high levels of progesterone during the expected oestrus of the synchronised ones. The number of animals artificially induced into oestrus was directly related to the number of non-treated herd mates showing sexual behaviour (r = 0.96, P < 0.05). No difference was found in oestrous response among treatments (P = 0.21) within the untreated cows (P = 0.14), probably due to the small sample size. No differences were found (P > 0.05) in oestrous lengths, onset of oestrus, and sexual activity (mounts given and received) among treatments. Animals with exogenous high levels of P-4 did not participate in sexual activities. It was concluded that a group of animals induced into oestrus by a synchronisation treatment may favour cycling herd mates to display concomitant oestrous behaviour.
URI: http://hdl.handle.net/11154/3296
ISSN: 0041-3216
Appears in Collections:Ciencias

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback