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  1. Effect of cage type on fecal corticosterone concentration in buck rabbits during the reproductive cycle

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

    Fecal corticosterone concentration (FCC) was measured in 14 buck rabbits individually housed in standard-dimension cages (SC) or in bigger cages (BC; with a volume more than double that of SC and equipped with a plastic foot mat) during 4 consecutive reproductive cycles. Cage type and...

  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...

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  5. 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...

  6. Behavior and performance in primiparous sows of two Min pig hybrid breeds in outdoor housing systems

    Contributor(s):: Liu, HongGui, Wang, Chao, Lv, Jing, Yu, YunQing, Zhang, JunLing, Bao, Jun

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

    Contributor(s):: Lane, J.

  8. 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.

  9. Establishing the extent of behavioural reactions in dairy cattle to a leg mounted activity monitor

    Contributor(s):: MacKay, J. R. D., Deag, J. M., Haskell, M. J.

  10. 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.

  11. 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...

  12. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. Does in proestrus-estrus hasten estrus onset in does estrous synchronized during breeding season

    Contributor(s):: Romano, J. E.

    During the breeding season, 68 Nubian goats were synchronized for oestrus with intravaginal sponges impregnated with fluorgestone acetate (FGA, Chronogest, 30 mg; n=36) or medroxyprogesterone acetate (MAP, Sincrocel, 60 mg; n=32). The experiment was performed in two replicates. In each replicate,...

  19. Mating behavior of bucks and does in goat operations under range conditions

    Contributor(s):: Mellado, M., Cardenas, C., Ruiz, F.

    The objectives of this study were to characterize the mating capacity of bucks under range condition and assess the effect of mating frequency on flock fertility. Two adjacent flocks of crossbred goats (Criollo x dairy goat breeds; n = 70 does, 5 bucks and 141 does, 4 bucks) were used. The mating...

  20. Oestrus and mating behaviour in gilts during boar induced puberty in relation to stress and housing

    Contributor(s):: Pedersen, L. J., Jensen, K. H., Giersing Linder, A.

    The effect of intermittent electroshock and individual vs. pair housing on sexual proceptive behaviour was studied in 48 large White x Danish Landrace gilts. In addition, the effect of intermittent electroshock on the behavioural response to boar stimulation and on sexual receptivity during first...