Reproduction

Group size planning for breedings of gene-modified mice and other organisms following Mendelian inheritance

Colony management of gene-modified animals is time-consuming, costly and affected by random events related to Mendelian genetics, fertility and litter size. Careful planning is mandatory to ensure successful outcomes using the least number of animals, hence adhering to the 3R...

Year Published: 2023Topics: ReproductionAnimal Type: Mouse, Rodent

Citation: Milchevskaya, V., Bugnon, P., ten Buren, E. B. J. et al. 2023. Group size planning for breedings of gene-modified mice and other organisms following Mendelian inheritance. Lab Animal 52(8), 183–188.

Physiological and behavioral effects of hormonal contraceptive treatment in captive, pair-bonded primates (Plecturocebus cupreus)

Hormonal contraception is an effective, reversible tool for managing birth rates in humans and nonhuman animals alike. However, manipulating reproductive hormones has behavioral consequences that can impact social and sexual behavior between conspecifics. First, we studied 18 pairs of nonreproductive...

Year Published: 2023Topics: ReproductionAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Karaskiewicz, C. L., Ramirez, M., Bales, K. L. 2023. Physiological and behavioral effects of hormonal contraceptive treatment in captive, pair-bonded primates (Plecturocebus cupreus). JAALAS 62(6), 494–501.

Sedated cesarean sections are associated with increased kid survival compared to general anesthesia in goats: Retrospective cohort of 45 cases (2011–2021)

OBJECTIVE To determine whether anesthesia type (sedation or general anesthesia) affects kid survival to discharge in caprine cesarean sections (C-sections). ANIMALS Retrospective cohort of 99 caprine C-sections (2011–2021). PROCEDURES All surgeries were performed via left flank laparotomy in right lateral...

Year Published: 2023Topics: Anesthesia & Sedation, ReproductionAnimal Type: Goat

Citation: Elane, G. L., Portela, D. A., Hobbs, K. J. et al. 2023. Sedated cesarean sections are associated with increased kid survival compared to general anesthesia in goats: Retrospective cohort of 45 cases (2011–2021). Journal of the American Veterinary Medical Association 261(3), 391–396.

A fat tailed what?!: Navigating husbandry for the fat tailed dunnart (Sminthopsis crassicaudata)

FTDs are Australian carnivorous nocturnal marsupials, whose diet, environmental needs, and enrichment vary from typical research species. Due to the limited working knowledge on the husbandry and care of this species in a biomedical setting, information was compiled from multiple...

Year Published: 2023Topics: Environmental Enrichment, Handling, Husbandry & Management, ReproductionAnimal Type: Other Animal

Citation: Powell, J., Collins, T., Beaty, T. et al. 2023. A fat tailed what?!: Navigating husbandry for the fat tailed dunnart (Sminthopsis crassicaudata). Laboratory Animal Science Professional 11(4) (July/August), 46-48.

A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques

Obtaining quality oocytes is a prerequisite for ART-based studies. Here we describe a method for transabdominal ultrasound-guided (US) oocyte retrieval in rhesus macaques (Macaca mullata) and compare it to the standard surgical approach using laparoscopy (LAP). We analyzed oocyte yield...

Year Published: 2023Topics: Reproduction, Surgery & Post-OpAnimal Type: Macaque, Nonhuman Primate

Citation: Piekarski, N., Hobbs, T. R., Jacob, D. et al. 2023. A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques. Animals 13(19), 3017.

Effects of incubation temperatures on learning abilities of hatchling velvet geckos

Stressful environments in utero can have a profound influence on cognitive functions and learning ability. In lizards, thermal environments experienced by embryos can shape a range of traits, including sex, body size, and locomotor performance, which may influence fitness. Recent...

Year Published: 2020Topics: Husbandry & Management, ReproductionAnimal Type: Lizard, Reptile

Citation: Abayarathna, T., Webb, J. K. 2020. Effects of incubation temperatures on learning abilities of hatchling velvet geckos. Animal Cognition 23(4), 613–620.

Composition of the wild rabbit nest and its implication for domestic rabbit breeding

Wild European rabbits (Oryctolagus cuniculus) give birth in an underground nursery burrow where the kits are hermetically closed into the nest chamber for several weeks except for the three minutes of daily nursing. Given this confinement, the nest quality seems...

Year Published: 2022Topics: ReproductionAnimal Type: Rabbit

Citation: Bilkó, Á., Petróczi, I., Bárdos, B. et al. 2022. Composition of the wild rabbit nest and its implication for domestic rabbit breeding. Applied Sciences 12(4), 1915.

Preterm rat survival is enhanced by gestational environmental enrichment

Throughout the last decade, the estimated global human preterm birth rate was 10.6 %, with higher rates in Asia, South America, and Africa. Preterm individuals, even in adulthood, are more likely to develop cardiorespiratory, renal, and metabolic disorders. On the...

Year Published: 2023Topics: Environmental Enrichment, ReproductionAnimal Type: Rat, Rodent

Citation: Núñez-Murrieta, M. A., Coria-Avila, G. A., Martínez, A. J. et al. 2023. Preterm rat survival is enhanced by gestational environmental enrichment. Behavioural Processes 205, 104820.

The beneficial effects of providing prepartum sows with nesting materials on farrowing traits, piglet performance and maternal behavior: A systematic review and meta-analysis

Sows are highly motivated to engage in nest-building behavior prior to farrowing. Studies have shown that providing nesting material to farrowing sows reduces the occurrence of redirected nest-building behaviors, improves farrowing traits and maternal behavior, and decreases pre-weaning mortality. However,...

Year Published: 2023Topics: Environmental Enrichment, Rearing & Weaning, ReproductionAnimal Type: Pig

Citation: Monteiro, M. S., Muro, B. B. D., Carnevale, R. F. et al. 2023. The beneficial effects of providing prepartum sows with nesting materials on farrowing traits, piglet performance and maternal behavior: A systematic review and meta-analysis. Applied Animal Behaviour Science 259, 105795.

Understanding the behaviour and improving the welfare of pigs

With growing concern from consumers and regulatory agencies about the welfare of farmed animals such as pigs, the livestock sector must assess how animal welfare can be improved whilst ensuring livestock production remains economically and environmentally sustainable. Understanding the behaviour...

Year Published: 2021Topics: Body Modification/Mutilation, Euthanasia, Husbandry & Management, Reproduction, Welfare AssessmentAnimal Type: Pig

Citation: Edwards, S. (Ed.) 2021. Understanding the behaviour and improving the welfare of pigs. Burleigh Dodds Science Publishing Limited, Sawston, Cambridge, UK. 594 p.