Prediction of vitality and survival of newborn lambs using a modified Apgar score

Barreto, José Victor Pronievicz; Pértile, Simone Fernanda Nedel; Rêgo, Fabíola Cristine de Almeida; Patelli, Thais Helena Constantino; Nascimento, Sheila Tavares; Lorenzetti, Elis; Filho, Luiz Fernando Coelho da Cunha

doi:10.1016/j.applanim.2021.105281

Cited by 4 publications

(6 citation statements)

References 23 publications

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“…These data were similar to those described by Dwyer (2003) for neonates from eutocic parturitions. The data also corroborated the findings of Barreto et al (2021) , who used the modified Apgar score to assess the influence of maternal and neonatal conditions on lambs’ vitality and survival, and who noted averages in minutes between the ISD position and the first suckle that were similar to those found in this study in neonates with moderate to high Apgar scores.…”

Section: Discussionsupporting

confidence: 90%

“…Labor is induced through exogenous glucocorticoids that mimic the action of cortisol produced by the fetal adrenal cortex, which acts as an initial trigger to a hormonal cascade that, in turn, triggers labor ( Zoller et al, 2015 ; Barreto et al, 2021 ). Corticosteroids also promote fetal maturation, particularly structural pulmonary maturation, thereby stimulating the production of surfactant phospholipids and activating the maturation of brown adipose tissue ( Liggins, 1969 ; Fowden et al, 1995 ; Ballard et al, 1997 ; Zaremba et al, 1997 ; Bispham et al, 2002 ).…”

Section: Introductionmentioning

confidence: 99%

“…In veterinary medicine, a neonate's clinical condition is determined by several adaptations of the Apgar score, a method created by a medical anesthesiologist for application in human neonates (Garcia, 2001). In a recent study, Barreto et al (2021) found that neonates with a high Apgar score ingested a greater amount of colostrum and had a higher liver enzyme index, which is associated with greater survival likelihood.…”

Section: Introductionmentioning

confidence: 99%

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Influence of prenatal corticosteroid therapy on neonatal vitality and utility as a labor-inducing agent in Santa Inês ewes

Santos,

Bittencourt,

Xavier

et al. 2024

Anim. Reprod.

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Since the 1970s, maternal corticosteroid therapy has been used successfully to induce labor. This allows for better monitoring of parturients and provision of first aid to neonates, improving neonatal viability, as this treatment induces maturation in a variety of fetal tissues, thereby reducing morbidity and mortality. Although the effects of corticosteroids are well known, few studies have investigated the influence of this therapy in Santa Inês sheep. This study aimed to evaluate the efficacy of dexamethasone at two doses (8 and 16 mg) to induce lambing in Santa Inês ewes at 145 days of gestation and assess its effects on neonatal vitality. For this study, 58 ewes raised in an extensive system were investigated. Pregnancy was confirmed after artificial insemination at a set time or after controlled mounting. Ewes were separated into three groups: an untreated control group (G1: 0 mg) and groups treated with two doses of dexamethasone (G2: 8 mg and G3: 16 mg). In total, 79 lambs were born. Their vitality was assessed based on their Apgar score, weight, temperature, and postnatal behavior. SAS v9.1.3 (SAS Institute, Cary, NC) was used to analyze data, considering a 5% significance level for all analyses. The births in the induced groups occurred 48.4 ± 22.1 h after induction, while the ewes that underwent non-induced labor gave birth 131.96 ± 41.9 h after placebo application (p < 0.05), confirming the efficacy of dexamethasone to induce and synchronize labor. The induced and non-induced neonates had similar Apgar scores, temperatures, weights, and postnatal behavioral parameters (p > 0.05). This study showed that inducing labor in Santa Inês ewes at 145 days of gestation with a full (16 mg) or half dose (8 mg) of dexamethasone is an effective technique and does not compromise neonate vitality.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of prenatal corticosteroid therapy on neonatal vitality and utility as a labor-inducing agent in Santa Inês ewes

Santos,

Bittencourt,

Xavier

et al. 2024

Anim. Reprod.

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“…In this way, the results shown by these authors would help to support the idea that an animal with a low birth weight would have less energy capacity due to the limited availability of resources to maintain its thermogenesis. Interestingly, this idea is complemented by the study carried out by Barreto et al [ 66 ] where they determined the vitality of 54 Suffolk lambs using the APGAR (appearance, pulse, grimace, activity, and respiration) method. Although these authors observed that low environmental temperature (minimum of 8.75 °C) had a greater impact on the body temperature of the offspring, they also observed that animals weighing less than 3 kg (from multiple births) had a greater chance of developing hypothermia.…”

Section: Intrinsic Factors Affecting the Temperature In The Newborn B...mentioning

confidence: 99%

“…In dogs, it has even been suggested that low birth weight can increase the probability of perinatal death by 2.6% and the necessity of post-natal assistance by 2.7 times [ 69 ]. For this reason, early recognition of hypothermia is necessary to provide the necessary assistance, as is the case with the consumption of colostrum, which can be a valuable energy resource for newborns [ 66 , 68 ]. Consumption of colostrum in newborns will provide enough energetic substances to complement the available reserves.…”

Section: Intrinsic Factors Affecting the Temperature In The Newborn B...mentioning

confidence: 99%

Strategies and Mechanisms of Thermal Compensation in Newborn Water Buffaloes

Mota-Rojas

Braghieri

Ghezzi

et al. 2023

Animals

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Hypothermia is one of the principal causes of perinatal mortality in water buffaloes and can range from 3% to 17.9%. In ruminants, factors affecting hypothermia in newborns may be of intrinsic (e.g., level of neurodevelopment, birth weight, vitality score, amount of brown fat, skin features) or extrinsic origin (e.g., maternal care, environmental conditions, colostrum consumption). When newborn buffaloes are exposed to cold stress, thermoregulatory mechanisms such as peripheral vasoconstriction and shivering and non-shivering thermogenesis are activated to prevent hypothermia. Due to the properties of infrared thermography (IRT), as a technique that detects vasomotor changes triggered by a reduction in body temperature, evaluating the central and peripheral regions in newborn buffaloes is possible. This review aims to analyze behavioral, physiological, and morphological strategies and colostrum consumption as thermal compensation mechanisms in newborn water buffalo to cope with environmental changes affecting thermoneutrality. In addition, the importance of monitoring by IRT to identify hypothermia states will be highlighted. Going deeper into these topics related to the water buffalo is essential because, in recent years, this species has become more popular and is being bred in more geographic areas.

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Programmed parturition assistance (PPA) in primiparous wool-type ewes improves mother-lamb behaviour at lambing

Regueiro¹,

Jorge-Smeding²,

Baldi³

et al. 2023

Applied Animal Behaviour Science

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Prediction of vitality and survival of newborn lambs using a modified Apgar score

Cited by 4 publications

References 23 publications

Influence of prenatal corticosteroid therapy on neonatal vitality and utility as a labor-inducing agent in Santa Inês ewes

Influence of prenatal corticosteroid therapy on neonatal vitality and utility as a labor-inducing agent in Santa Inês ewes

Strategies and Mechanisms of Thermal Compensation in Newborn Water Buffaloes

Programmed parturition assistance (PPA) in primiparous wool-type ewes improves mother-lamb behaviour at lambing

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