Changes in physiological and immunological parameters during the peripartum period in Zerasca sheep

Giuliotti, Lorella; Lai, O.; Cavallina, R.; Alfieri, L.; Rabusca, G.; Benvenuti, Maria Novella

doi:10.2478/pjvs-2014-0109

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Several studies have reported variable levels of oxidative stress during the transition period in dairy cows and have been recently reviewed [5]. Changes in redox status indicators were also found in a native sheep breed [6,7] and in a synthetic SCP (37.5% Polish sheep, 12.5% prolific breed, Romanowska or Finnsheep, 25% Suffolk, 25% Charollais) line [8] around lambing and during lactation. Studies in Red Syrian goats report a significant decrease in glutathione peroxidase (GPX) activity and albumin concentration during the peripartum, suggesting that animals experienced moderate oxidative stress during this period [9].…”

Section: Introductionmentioning

confidence: 97%

Oxidative Status of Goats with Different CSN1S1 Genotypes Fed ad Libitum with Fresh and Dry Forages

et al. 2020

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Forty late-lactation Girgentana goats were used to study the effect of diets fed ad libitum and αS1-casein (CSN1S1) genotype on redox balance. The goats genotyped at CSN1S1 locus (A/A, A/F) were subjected to four feeding treatments different for percentage inclusion of dry and fresh forage: DAF100 (98% of Dry Alfalfa Forage), DAF65 (65% of Dry Alfalfa Forage), FSF100 (100% of Fresh Sulla Forage) and FSF65 (65% of Fresh Sulla Forage). Blood samples were analyzed for superoxide dismutase (SOD) and glutathione peroxidase (GPX) activity, reactive oxygen metabolites (ROMs), biological antioxidant potential (BAP) and non-esterified fatty acids (NEFA), beta-hydroxybutyrate (BHBA), albumin, glucose and cholesterol contents. The oxidative stress index (OSI) was calculated as percentage ratio of ROMs to BAP. Redox balance was improved by Sulla inclusion, as reflected in the lower OSI values found in FSF100 and FSF65 groups. DAF100 group displayed the highest GPX activity, while other groups exhibited the highest SOD activity. Fresh forage diets increased albumin concentration while no effect of tested factors was noted on glucose, NEFA, BHBA and cholesterol contents. The interaction diet × genotype was significant only for GPX activity. GPX and albumin were negatively correlated and were correlated positively and negatively with ROMs, respectively. Diet rather than genotype affects redox balance in dairy goats and a possible role of forage polyphenol compounds on oxidative status needs to be tested in future studies.

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Section: Introductionmentioning

confidence: 97%

Oxidative Status of Goats with Different CSN1S1 Genotypes Fed ad Libitum with Fresh and Dry Forages

et al. 2020

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“…Cortisol increases estrogen concentration while decreasing progesterone concentration. It also increases oxytocin, which strengthens myometrial contractions (Nagel et al 2019, Akbulut andKal, 2022) and thus embryo implantation may be adversely affected. It has been reported that high cortisol levels cause failed embryo implantation in in-vitro fertilization (IVF) and embryo transfer (ET) in women (Magarelli et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of melatonin on reproductive performance, plasma progesterone and malondialdehyde concentrations during breeding season in ewes

Akbulut

Kırbaş

Harman

et al. 2023

Preprint

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Melatonin, synthesized in the pineal gland, affects the hypothalamus, leading to the release of gonadotropins during the transition period in sheep and goats. Melatonin regulates the production of prolactin in lactotrophic cells and of follicle-stimulating hormone and luteinizing hormone in gonadotropic cells. Melatonin may also provide better reproductive performance through its positive effects on reproduction, such as improving oocyte quality, favoring embryo implantation, reducing oxidative stress, and protecting the offspring by increasing progesterone levels. Melatonin applications in sheep are generally carried out during anoestrus and transition periods. In this study, the effect of exogenous melatonin used with different methods on estrus onset, fertility, plasma progesterone, and malondialdehyde (MDA) concentration will be examined during the breeding season in sheep. For this purpose, the ewes were assigned to three groups: Group I (MEL): Subcutaneous administration of 18 mg of melatonin (Regulin, Ceva-Türkiye) Group II (MELPRO): Subcutaneous administration of 18 mg melatonin (Regulin, Ceva-Türkiye) + Intravaginal sponge containing 20 mg of flugestone acetate for 9 days (Choronogest CR- France) + As soon as the sponge is removed, intramuscular PGF2α (250 µg cloprostenol, Senkrodin-Vetaş-Türkiye) Group III (CON): 1 ml of physiological saline was administered subcutaneously for the placebo effect. As a result, in ewes, only exogenous melatonin administration during the natural breeding season causes a short delay in the time to first estrus. Melatonin increases progesterone concentration on day 17 of gestation in the natural breeding season. The positive reproductive effects of melatonin may increase the multiple birth rate and litter size.

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Parenteral use of ADE vitamins in prepartum and its influences in the metabolic, oxidative, and immunological profiles of sheep during the transition period

Sucupira

Nascimento

Lima

et al. 2019

Small Ruminant Research

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Changes in physiological and immunological parameters during the peripartum period in Zerasca sheep

Cited by 4 publications

References 5 publications

Oxidative Status of Goats with Different CSN1S1 Genotypes Fed ad Libitum with Fresh and Dry Forages

Oxidative Status of Goats with Different CSN1S1 Genotypes Fed ad Libitum with Fresh and Dry Forages

Effects of melatonin on reproductive performance, plasma progesterone and malondialdehyde concentrations during breeding season in ewes

Parenteral use of ADE vitamins in prepartum and its influences in the metabolic, oxidative, and immunological profiles of sheep during the transition period

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