Reproduction

Includes breeding; fertility; gestation; parturition; and contraception.

Rodríguez-Trujillo, R., Batista-Arteaga, M., Iusupova, K. et al. 2024. Comparison of propofol and alfaxalone as anesthesic drugs in bitches undergoing ovariohysterectomies (healthy bitches and with pyometra) and cesarean sections. Animals 14(9), 1343

This study evaluated the efficacy and safety of two anesthetic agents, alfaxalone and propofol, on maternal physiological parameters (heart and respiratory rates, blood pressure, and temperature) on either ovariohysterectomies or cesarean sections in bitches. A...

Olsen, H. E., Vogel, K. D., Creutzinger, K. C. 2024. Use of a calving blind that imitates a natural environment. Animals 14(8), 1171.

Many indoor-housed cows isolate at calving when given the opportunity, and calving behaviors vary by blind and pen design. The objectives of this study were to determine if cows preferred calving in a visibly separated...

Newton, R. 2023. An overview of black tree monitor (Varanus beccarii) husbandry. RATEL (Journal of the Association of British and Irish Wild Animal Keepers) 50(3-4), 24-25.

This article describes the enclosure, environmental parameters, feeding, enclosure dynamics, breeding, handling, identification, and enrichment for zoo-housed black tree monitors.

Lagoda, M. E., O’Driscoll, K., Galli, M. C. et al. 2023. Indicators of improved gestation housing of sows. Part II: Effects on physiological measures, reproductive performance and health of the offspring. Animal Welfare 32, e52.

Prenatal stress is the mechanism through which poor welfare of pregnant sows has detrimental effects on the health and resilience of their piglets. We compared two gestation housing systems (IMPROVED versus [conventional] CONTROL) in terms...

Lagoda, M. E., O’Driscoll, K., Galli, M. C. et al. 2023. Indicators of improved gestation housing of sows. Part I: Effects on behaviour, skin lesions, locomotion, and tear staining. Animal Welfare 32, e51.

Commercial gestation housing systems for sows generally fail to cater fully for their needs in terms of comfort or the ability to perform highly motivated behaviours, which can lead to chronic stress and an impairment...

Barrett, L., Maloney, S. K., Blache, D. 2023. Pekin ducks are motivated to lay in their preferred nest substrate. Animal Welfare 32, e28.

Nest design is one factor contributing to floor-laying in farmed poultry. We investigated: (i) if ducks (Anas platyrhynchos) prefer a particular nest substrate; and (ii) how important that preference is to them, indicated by stress-induced...

Braden, G. C., Rasmussen, S., Monette, S. et al. 2017. Effects of breeding configuration on maternal and weanling behavior in laboratory mice. JAALAS 56(4), 369-376.

Although numerous studies have evaluated the effect of housing density on the wellbeing of laboratory mice, little is known about the effect of breeding configuration on mouse behavior. The 8th edition of the Guide for...

Hunter, C. L., Yang, P., Renner, D. M. et al. 2023. Effects of isoflurane anesthesia on C57BL/6J pups after cervical dislocation of dams. JAALAS 62(5), 449–452.

Inhalant anesthesia is routinely used for cesarian section in many animal species, allowing the safe delivery of neonates and smooth recovery of dams. However, in mice, inhalant anesthesia in cesarean section may be avoided due...

Clancy, B. M., Theriault, B. R., Turcios, R. et al. 2023. The effect of noise, vibration, and light disturbances from daily health checks on breeding performance, nest building, and corticosterone in mice. JAALAS 62(4), 291–302.

At our institution, the techniques that technicians use for health checks vary for mice housed in cages on individually ventilated caging (IVC) racks. If the mice cannot be adequately visualized, some technicians partially undock the...

Cho, E., Walsh, C. A., D’Angelo-Gavrish, N. M. et al. 2023. Effects of housing density on reproductive performance, intracage ammonia, and welfare of mice continuously housed as breeders in standard mouse and rat caging. JAALAS 62(2), 116–122.

Maintaining compliance with cage density recommendations in The Guide for the Care and Use of Laboratory Animals precludes continuous trio breeding in standard-sized mouse cages. This study evaluated and compared several parameters of reproductive performance...

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