The Effect of Stress on Reproduction and Reproductive Technologies in Beef Cattle—A Review

Fernández-Novo, Aitor; Pérez-Garnelo, S. S.; Villagrá, Arantxa; Pérez‐Villalobos, Natividad; Astiz, Susana

doi:10.3390/ani10112096

Cited by 59 publications

(62 citation statements)

References 196 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There is also widespread consensus that FSH secretion increases in the summer, owing to reduced inhibit secretion from small follicles. When a stressor affect the hypothalamic-pituitary-adrenal axis (HPA) which are responsible to stimulate the hormone such as gonadotropin releasing hormone (GnRH), vasopressin, releasing hormone (CRH) and glucocorticoids [11]. while progesterone, gonadotropins, prolactin, and glucagon rises [11].…”

Section: Heat Stress Imbalances Reproductive Hormonesmentioning

confidence: 99%

Adverse Impact of Heat Stress on Bovine Development: Causes and Strategies for Mitigation

Gokhale¹,

Sharma²

2022

Bovine Science - Challenges and Advances

View full text Add to dashboard Cite

Heat stress induces the richness and reproductive domesticated animal’s performance by settling the physiology conceptive steps, through hormonal irregularity, diminished oocyte quality and feeble semen quality, and diminished undeveloped organism advancement and endurance. It depends on principally milk production, nutrition, disease management, sexual activities, and heat stress tolerance capacity in livestock farming. The decreases infertility caused by elevated blood heat influences sex gland regulation, oestrus regulation, and gametocyte disturbance and also affects embryonic development. Heat stress reduces the degree of dominance of the seminal vesicles and this may be observed as reduced steroidogenic capability of its theca and granulose cells as fall in blood oestrogen concentrations. Plasma progestin levels are also diminished counting on whether or not the heat stress is acute and on the metabolic state of the animal. The endocrine changes the cyst activities and alters the ovulatory mechanism leading to a decrease in gametocyte and embryo quality. Summer infertility may be countered through oestrus behaviour can be mitigated by with the help of implementation of ovulation phase treatments to limited period of embryonic transfer and also advanced reproductive technologies involving hormonal treatments, systematic artificial insemination and which may enhance the possibility of establishing pregnancy in domestic animals.

show abstract

Section: Heat Stress Imbalances Reproductive Hormonesmentioning

confidence: 99%

Adverse Impact of Heat Stress on Bovine Development: Causes and Strategies for Mitigation

Gokhale¹,

Sharma²

2022

Bovine Science - Challenges and Advances

View full text Add to dashboard Cite

show abstract

“…Discussion focuses on studies in cattle which have employed infusion of epinephrine or norepinephrine to examine short term effects of adrenergic activation on physiological mechanisms, and injection of synthetic adrenergic agonists and antagonists such as clenbuterol and propranolol on longer term effects of adrenergic activation or inhibition. For reviews of adrenergic influences on reproduction in beef cattle see (Fernandez-Novo et al, 2020) and on appetite see (Wellman, 2005). For comments on limitations associated with the scope of the review see Supplementary Material.…”

Section: Influence Of Adrenergic Pathways On Traits Associated With Fsmentioning

confidence: 99%

Adrenergic Tone as an Intermediary in the Temperament Syndrome Associated With Flight Speed in Beef Cattle

Colditz

2021

Front. Anim. Sci.

View full text Add to dashboard Cite

The temperament of farm animals can influence their resilience to everyday variations within the managed production environment and has been under strong direct and indirect selection during the course of domestication. A prominent objective measure used for assessing temperament in beef cattle is the behavioral flight response to release from confinement in a crush or chute. This behavioral measure, termed flight speed (also known as escape velocity) is associated with physiological processes including body temperature, feeding behavior, growth rate, carcass composition, immune function, and health outcomes. This review examines the functional links between this suite of traits and adrenergic activity of the sympathetic nervous system and the adrenomedullary hormonal system. It is suggested that flight speed is the behavioral aspect of an underlying “flightiness” temperament syndrome, and that elevated adrenergic tone in animals with a high level of flightiness (i.e., flighty animals) tunes physiological activities toward a sustained “fight or flight” defense profile that reduces productivity and the capacity to flourish within the production environment. Nonetheless, despite a common influence of adrenergic tone on this suite of traits, variation in each trait is also influenced by other regulatory pathways and by the capacity of tissues to respond to a range of modulators in addition to adrenergic stimuli. It is suggested that tuning by adrenergic tone is an example of homeorhetic regulation that can help account for the persistent expression of behavioral and somatic traits associated with the flight speed temperament syndrome across the life of the animal. At a population level, temperament may modulate ecological fit within and across generations in the face of environmental variability and change. Associations of flight speed with the psychological affective state of the animal, and implications for welfare are also considered. The review will help advance understanding of the developmental biology and physiological regulation of temperament syndromes.

show abstract

“…New hormonal procedures could increase synchronization and conception rates, together with other strategies, such as nutritional ones [34], body condition score improvement [35], and avoiding stress while handling [36].…”

Section: Introductionmentioning

confidence: 99%

Effects on Synchronization and Reproductive Efficiency of Delaying the Removal of the Intravaginal Progesterone Device by 24 h in the 5d Co-Synch Protocol in Heifers

Fernández-Novo

Santos-Lopez

Pesantez-Pacheco

et al. 2021

Animals

Self Cite

View full text Add to dashboard Cite

In beef herds, increasing animal welfare, improving reproductive performance and easing animal management are key goals in farm economics. We explored whether delaying the removal of the intravaginal progesterone device by 24 h in heifers synchronized with a 5d Co-synch 72-h protocol could improve reproductive efficiency of fixed-time artificial insemination (FTAI). In experiment 1, we examined the total synchronization rate (TSR) in cycling Holstein heifers. Heifers (13.4 ± 0.69 mo.) were randomly assigned to the standard 5d Co-synch 56-h protocol (5dCo56; n = 10), 5d Co-synch 72-h (5dCo72; n = 17), or the modified 5d Co-synch 72-h protocol, in which removal of the progesterone device was delayed by 24 h (6dCo48; n = 19). In experiment 2, 309 cycling beef heifers on 18 commercial farms were subjected to the 5d Co-synch 72-h or 6-d Co-synch 48-h protocol and conception rate (CR) studied. In experiment 1, the three protocols led no differences on TSRs of 80.0% (5dCo56), 88.2% (5dCo72), and 89.5% (6dCo48). In experiment 2, the CR from the beef heifers, observed during two consecutive reproductive seasons did not differ: 59.7% for 5dCo72 and 62.0% for 6dCo48 (p = 0.907). Therefore, delaying removal by 24 h provides satisfactory results without reducing reproductive efficiency of heifers.

show abstract

The Effect of Stress on Reproduction and Reproductive Technologies in Beef Cattle—A Review

Cited by 59 publications

References 196 publications

Adverse Impact of Heat Stress on Bovine Development: Causes and Strategies for Mitigation

Adverse Impact of Heat Stress on Bovine Development: Causes and Strategies for Mitigation

Adrenergic Tone as an Intermediary in the Temperament Syndrome Associated With Flight Speed in Beef Cattle

Effects on Synchronization and Reproductive Efficiency of Delaying the Removal of the Intravaginal Progesterone Device by 24 h in the 5d Co-Synch Protocol in Heifers

Contact Info

Product

Resources

About