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  1. Characterizing changes in activity and feeding behaviour of lactating dairy cows during behavioural and silent oestrus

    Contributor(s):: Zebari, Hawar M., Rutter, S. Mark, Bleach, Emma C. L.

    The normal time budgets of dairy cows are influenced by oestrus, with cows spending less time resting and eating but more time walking. Previous studies have shown that cows spend approximately 21% less time feeding where the day of oestrus is assumed to be the day of successful artificial...

  2. Evaluation of the sexual behavior and testosterone concentrations of Mangalarga Marchador stallions

    Contributor(s):: Rua, M. A. S., Quirino, C. R., Bastos, R., Bartholazzi Junior, A., Santoro, P. N., Ribeiro, M. da S., Matos, L. F., Barreto, M. A. P.

    Assessing the sexual behavior of stallions is extremely important because sexual behavior is linked to reproductive efficiency. The objective of this study was to evaluate the sexual behavior, testosterone concentration and libido of Mangalarga Marchador stallions from northern Rio de Janeiro...

  3. How to train a dog to detect cows in heat-training and success

    Contributor(s):: Johnen, D., Heuwieser, W., Fischer-Tenhagen, C.

    Efficient and accurate estrus detection is a key management factor determining acceptable reproductive performance in dairy herds. Previous studies have shown that dogs can differentiate between vaginal mucus samples of cows in estrus and vaginal mucus samples of cows in diestrus with an accuracy...

  4. Behaviour, wounds, weight loss and adrenal weight of rabbit does as affected by semi-group housing

    Contributor(s):: Buijs, S., Maertens, L., Hermans, K., Vangeyte, J., Tuyttens, F. A. M.

    Group housing is often assumed to improve the welfare of gregarious species. Whether this is actually the case depends on the advantages (e.g. more opportunity for social and locomotor behaviour) and disadvantages (e.g. increased fighting and wounding) induced by the specific housing type. We...

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  6. Assessment: effects of porcine zona pellucida immunocontraception on oestrous cyclicity in feral horses

    Contributor(s):: Powell, D. M., Monfort, S. L.

    The following study used noninvasive faecal hormone monitoring to assess whether contraception with porcine zona pellucida (PZP) had an impact on oestrous cycle characteristics in a herd of feral horses living on Assateague Island, Maryland. The study assayed longitudinal faecal samples,...

  7. Effect of breed, cage type, and reproductive phase on fecal corticosterone levels in doe rabbits

    Contributor(s):: Prola, L., Cornale, P., Renna, M., Macchi, E., Perona, G., Mimosi, A.

    Fecal corticosterone concentration (FCC) is increasingly being used as a noninvasive indicator of stress in assessment of nonhuman animal welfare. The aim of this study was to evaluate effects of breed, cage type, reproductive phase, and their interactions on FCC levels in doe rabbits. A total of...

  8. Using fecal hormonal and behavioral analyses to evaluate the introduction of two sable antelope at Lincoln Park Zoo

    Contributor(s):: Loeding, E., Thomas, J., Bernier, D., Santymire, R.

    Introductions of sable antelope (Hippotragus niger) can be difficult due to the potential ensuing aggression compounded by their large horns. The goal was to use hormonal assays and behavioral analyses to evaluate the success of an introduction of 2 adult females at Lincoln Park Zoo. The...

  9. The welfare implications of large litter size in the domestic pig II: management factors

    Contributor(s):: Baxter, E. M., Rutherford, K. M. D., D'Eath, R. B., Arnott, G., Turner, S. P., Sandoe, P., Moustsen, V. A., Thorup, F., Edwards, S. A., Lawrence, A. B.

  10. Can non-invasive glucocorticoid measures be used as reliable indicators of stress in animals?

    Contributor(s):: Lane, J.

  11. Effect of short and long periods of separation on agonistic behaviour, injuries and stress in Herens cows kept in loose housing

    Contributor(s):: Castro, I. M. L., Gygax, L., Wechsler, B., Hauser, R.

  12. Reducing mother-young separation distress by inducing ewes into oestrus at the day of weaning

    Contributor(s):: Perez-Leon, I., Orihuela, A., Lidfors, L., Aguirre, V.

  13. Repeated locomotion scoring of a sow herd to measure lameness: consistency over time, the effect of sow characteristics and inter-observer reliability

    Contributor(s):: D'Eath, R. B.

  14. Estrous and related behaviour in postpartum Holstein cows

    Contributor(s):: Hurnik, J. F., King, G. J., Robertson, H. A.

    Over a period of 1 yr, 3 consecutive groups, each consisting of 12 postpartum Holstein-Friesian cows aged from 3 to 9 yr, were observed continually for 80 days. The distribution of mounting behaviour showed evidence of circadian rhythm with the highest frequency occurring during the nocturnal...

  15. A note on silent ovulation identified by using radiotelemetry for estrous detection

    Contributor(s):: Shipka, M. P.

    The occurrence of silent ovulation in high-producing, postpartum Holstein cows was examined. 19 multiparous cows were fitted with transmitters (HeatwatchReg.) for radiotelemetry and examined using a visual oestrus detection routine for 1/2 h twice daily, on day 10 post partum. Blood samples were...

  16. A note on the effect of continuous ram presence on estrus onset, estrus duration and ovulation time in estrus synchronized ewes

    Contributor(s):: Romano, J. E., Fernandez Abella, D., Villegas, N.

    During fall season, 18 multiparous Corriedale ewes were divided into two equal groups for the continuous (CON) and intermittent (INT) presence of a ram. Oestrus was synchronized with fluorgestone acetate intravaginal sponges (Chronogest) that were left 14 days, plus an injection of 200 micro g of...

  17. A note on the effects of calf stimuli on the response of Zebu cows to Synchro-mate-B

    Contributor(s):: Quesada, Y., Estrada, S., Cubero, M., Garcia, F., Galina, C. S., Molina, R., Orihuela, A.

    The effect of Synchro-mate-B (SMB, ear implant containing 6 mg norgestomet) was measured on the oestrous response and the establishment of cyclicity using different calf stimuli. Multiparous Zebu cows, were divided in three groups. In the first, 32 animals were treated with SMB leaving the calves...

  18. Are cows more likely to lie down the longer they stand?

    Contributor(s):: Tolkamp, B. J., Haskell, M. J., Langford, F. M., Roberts, D. J., Morgan, C. A.

    Information on (changes in) standing and lying behaviour of cows can be used for oestrus detection, early diagnosis of disorders and to evaluate welfare consequences of changes in housing and management. Data sets on lying and standing behaviour were collected from cows with IceTagTM sensors...

  19. Continuous presence of rams hastens the onset of estrus in ewes synchronized during the breeding season

    Contributor(s):: Romano, J. E., Christians, C. J., Crabo, B. G.

    90 pluriparous ewes (30 Whiteface Western, 30 Suffolk and 30 Hampshire Down) from the St. Paul Sheep Teaching and Research Unit of the University of Minnesota (USA) were divided by breed and oestrous was synchronized with intravaginal sponges. These sponges were impregnated with...

  20. Development and validation of a new method for visual detection of estrus in mithun ( Bos frontalis )

    Contributor(s):: Mohan, Mondal, Muthupalani, Karunakaran, Chandan, Rajkhowa, Prakash, B. S.

    The objectives of this study were (1) to develop a suitable scoring scale for oestrus detection based on frequency and reliability of behavioural signs of oestrus in mithun (Bos frontalis) and (2) to validate the accuracy of this method for detection of oestrus in primi- and multiparous mithun...