You are here: Home / Tags / Sexual behavior / All Categories

Tags: Sexual behavior

All Categories (121-140 of 153)

  1. Sexual performance of Awassi ram lambs reared in different sex composition groups

    Contributor(s):: Kridli, R. T., Al-Yacoub, A. N.

    The objective of this study was to evaluate the effect of sex composition of the group of lambs before puberty on later sexual performance in Awassi ram lambs. Thirteen Awassi ram lambs of the same age were raised in either all-male group (n=7) or in a group mixed with females (n=6) from weaning...

  2. Social behaviour at and around oestrus of N'Dama cows treated with prostaglandin F<sub>2 alpha </sub>; analogue, cloprostenol

    Contributor(s):: Kabuga, J. D., Gyawu, P., Asare, K., Karikari, P. K., Appiah, P., Awunyo, K., Kwarteng, F. A.

    14 N'dama cows were given 2 intramuscular injections of a PGF2 alpha analogue (cloprostenol) 11 days apart and were then observed continuously from 18 h after each injection for 7 days. The percentage of cows showing standing oestrus was 85.7 and 92.9 after the 1st and 2nd injections resp....

  3. Social relationships of reindeer Rangifer tarandus during rut: implications for female choice

    Contributor(s):: Hirotani, A.

    The social relationships of reindeer during the rut in northeastern Finnish Lapland were studied. Most reindeer were individually recognisable, and their age and kin relationships were known. The majority of mating groups consisted of loosely organised harems, with [female][female] moving between...

  4. Some aspects of the sexual behaviour of stray dogs, Canis familiaris.

    Contributor(s):: Ghosh, B., Choudhuri, D. K., Pal, B.

    Different aspects of sexual behaviour were studied in the stray dog population of Burdwan town. The bitches differed in their degree of attractiveness to [male][male]. There was a positive correlation between the number of [male][male] attempting to mate a given bitch and the duration of their...

  5. Stimuli-related variation in urination frequency of female white-tailed deer during the estrous cycle

    Contributor(s):: Gassett, J. W., Osborn, D. A., Rickard, J. K., Marchinton, R. L., Miller, K. V.

    Variations in urination frequency of female white-tailed deer (Odocoileus virginianus) that appeared to be dependent on stage of the oestrous cycle and type of disturbance stimuli were observed, and possible causes for this potential chemosensory behaviour were evaluated. Eight does were exposed...

  6. The effects of superovulation hormone treatments on the frequency of estrous behaviours in cows

    Contributor(s):: Jezierski, T.

    Superovulation was induced in 37 Polish Black-and-White Lowland dairy cows by injections of cloprostenol (a PGF2 alpha analogue) and FSH. 120 untreated herdmates were used as controls. The frequencies of mountings and vulva sniffings during a total of 275 oestrous cycles during which cows...

  7. The influence of conditions at the time of mating on reproduction of commercial pigs

    Contributor(s):: Hemsworth, P. H., Hansen, C., Coleman, G. J., Jongman, E.

    Two mating systems, the Detection-Mating Area (DM) and a conventional mating system, were compared. The DM system involved detecting oestrous [female][female] in an arena closely surrounded on 2 sides by boars and mating these [female][female] in this arena. The system was designed to improve the...

  8. The influence of conditions at the time of mating on the sexual behaviour of male and female pigs

    Contributor(s):: Jongman, E. C., Hemsworth, P. H., Galloway, D. B.

    The sexual behaviour of 6-month-old boars and gilts mating in the boar's accommodation pen was compared with that of boars and gilts mating in a mating system called the Detection Mating Area (DMA), in which the boars are housed in individual stalls around a large central arena which is used for...

  9. The influence of handling by humans on the behaviour, reproduction and corticosteroids of male and female pigs

    Contributor(s):: Hemsworth, P. H., Barnett, J. L., Hansen, C.

    The influence of three handling treatments was studied in 15 male and 30 female pigs. Two handling treatments, considered as pleasant and unpleasant, were imposed for 5 min, three times a week from 11 weeks of age. The third handling treatment involved minimal contact with humans from 11 weeks of...

  10. The influence of mating conditions on the sexual behaviour of male and female pigs

    Contributor(s):: Hemsworth, P. H., Hansen, C., Winfield, C. G.

    Sixteen boars, aged 7 months, and 48 ovariectomised gilts, aged 7 months, were randomly allotted to mating in the boar's accommodation pen (boar pen treatment) or in an octagonal mating pen (mating pen treatment). One of 2 groups of gilts was induced into behavioural oestrus on alternate wk...

  11. A new approach to overcoming a yearling Holstein bull's complete lack of motivation to mounting

    Contributor(s):: Foote, R. H., Presicce, G. A., Brockett, C. C.

    A young Holstein bull, selected for semen evaluation, was presented with a variety of sexual stimuli in an attempt to induce it to mount teaser animals and serve an artificial vagina. The bull was tested on 25 occasions and was scheduled for slaughter at 17 months of age because of a total...

  12. Behavioural evidence of hybridization (Japanese x European) in domestic quail released as game birds

    Contributor(s):: Deregnaucourt, S., Guyomarc'h, J. C., Spano, S.

    The European quail is a partial migrant bird considered 'vulnerable' by the European community. The decline of this subspecies has spurred an annual release of large numbers of domestic Japanese quail. Prezygotic and postzygotic isolating mechanisms have not been established between these two...

  13. Changes in the behaviour and androgen levels during pubertal development of the buffalo bull

    Contributor(s):: Ahmad, N., Shahab, M., Anzar, M., Arslan, M.

    Changes in the sexual behaviour of 10 Nili-Ravi buffalo bulls in response to a teaser bull were studied at weekly intervals from 15 months of age until puberty (mean age at puberty, 23.6+or-0.9 months). Sexual behaviour of individual bulls was scored by a procedure based on an assessment of...

  14. D.G.M. Wood-Gush Memorial Lecture: an applied ethologist looks at the question "Why"?

    Contributor(s):: Duncan, I. J. H.

  15. Effects of 'chemical intervention' techniques on aggression and injuries when grouping unfamiliar adult pigs

    Contributor(s):: Barnett, J. L., Cronin, G. M., McCallum, T. H., Newman, E. A.

    The effects of a number of 'chemical intervention' techniques and the presence of a boar on the number of aggressive interactions and skin lesions following grouping of 4 unfamiliar, adult ovariectomized pigs, was examined in an experiment involving 24 pigs in 5 replicates. There were 6...

  16. Effects of social environment on welfare status and sexual behaviour of female pigs. I. Effects of group size

    Contributor(s):: Barnett, J. L., Hemsworth, P. H., Winfield, C. G., Hansen, C.

    The study examined the effects of housing 24 adult female pigs in groups of 2, 4 or 8 with a space allowance of 1.4msuperscript 2 per pig on welfare status, as indicated by plasma free-corticosteroid concentrations and behaviour patterns, and sexual behaviour. Housing gilts in pairs resulted in...

  17. Effects of the peri-pubertal rearing environment on endocrine and behavioural responses to oestrous female exposure in the mature bull

    Contributor(s):: Borg, K. E., Esbenshade, K. L., Johnson, B. H.

    30 American Angus bulls, aged 10-11 months, were reared on (1) pasture without contact with [female][female] (controls), (2) pasture with [female] contact for 2 h at 28-day intervals ([female]-exposed group), or (3) penned individually to restrict direct physical contact with other animals. After...

  18. Entire male pigs in farrow-to-finish pens - effects on animal welfare

    | Contributor(s):: Fredriksen, B., Lium, B. M., Marka, C. H., Mosveen, B., Nafstad, O.

    Aggressive and sexual behaviour can hamper animal welfare in entire male pig production. The aim of the present study was to investigate if rearing entire male pigs in sibling groups (in farrow-to-finish pens) could reduce aggressive and sexual behaviour and thereby improve animal welfare in...

  19. Heterosexual and homosexual behaviour and vocalisations in captive female koalas ( Phascolarctos cinereus )

    | Contributor(s):: Feige, S., Nilsson, K., Phillips, C. J. C., Johnston, S. D.

    Female koalas (Phascolarctos cinereus) exhibit both homosexual and heterosexual interactions in captivity, even though only heterosexual copulations have been observed in the wild. A key component of sexual interaction is the acoustic bellow, which is produced by males in the wild and both...

  20. Influence of plasma estradiol 17- beta and progesterone levels on estrous behaviour in mithun ( Bos frontalis )

    | Contributor(s):: Arindam, Dhali, Mishra, D. P., Muthupalani, Karunakaran, Anjumoni, Mech, Chandan, Rajkhowa

    The study was conducted on 10-adult mithun (Bos frontalis) cows during the third or fourth postpartum oestrous cycle to investigate the influence of plasma estradiol 17- beta (E2) and progesterone (P4) levels on the expression of behavioural oestrus. The oestrus was detected in the mithun cows by...