Serum Lipid Profile of Spayed and Non-Spayed Female Dogs Associated With the Body Condition Score

Ferreira, Patricia Almeida; Capella, Sabrina de Oliveira; Theodoro, Stephanie de Souza; Félix, Samuel Rodrigues; Peres, William; Nobre, Márcia de Oliveira

doi:10.1590/1089-6891v16i226348

Cited by 3 publications

(4 citation statements)

References 21 publications

(28 reference statements)

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“…A negative correlation was identified between 17‐β‐estradiol and total cholesterol concentrations. This finding is consistent with previous reports that identified significantly higher serum cholesterol concentrations in spayed bitches than in unspayed female dogs 40 …”

Section: Discussionsupporting

confidence: 93%

“…This finding is consistent with previous reports that identified significantly higher serum cholesterol concentrations in spayed bitches than in unspayed female dogs. 40 As for 17-β-estradiol concentrations below the LOD, as mentioned above, they were recorded entirely in the diestrus and anestrus phases. This finding reflects the normal pattern that generally occurs during the estrous cycle of the dog.…”

Section: Discussionmentioning

confidence: 79%

“…This finding is consistent with previous reports that identified significantly higher serum cholesterol concentrations in spayed bitches than in unspayed female dogs. 40 …”

Section: Discussionmentioning

confidence: 99%

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Relationship between thyroid function and sex hormones in female German shepherd dogs

Scarpa,

Tagliasacchi,

Iavazzo

et al. 2023

Veterinary Internal Medicne

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BackgroundSeveral variables influence the serum concentration of thyroid hormones in dogs, including breed, age, drugs, and concurrent diseases. However, data regarding the interaction between thyroid function and the estrous stage of female dogs are limited.HypothesisEstrous stage may influence thyroid function in German Shepherd dogs.MethodsLongitudinal, observational, non‐randomized cohort study. The dogs were monitored during the complete estrous cycle, and different stages were determined by vaginal cytology. Two blood samples were collected at the beginning and end of each stage to analyze the following: total thyroxine (TT4), free thyroxine (fT4), total triiodothyronine (TT3), free triiodothyronine (fT3), canine thyrotropin (cTSH), progesterone, 17‐β‐estradiol, triglycerides, and cholesterol concentrations. Hematological and biochemical evaluations were performed at the beginning and end of the study period.AnimalsSeventeen German Shepherds were included, of which 7 were bred during the study period. One dog was excluded for estrus interruption and another for suspected hypothyroidism.ResultsSerum concentrations of T4, fT4, and fT3 were negatively correlated with age. Total thyroxine demonstrated significant changes in serum concentrations between estrous stages, with higher concentrations in estrus and diestrus. Total thyroxine concentrations were positively correlated with progesterone concentrations and negatively correlated with 17‐β‐estradiol concentrations. Free thyroxine did not show significant variations but was positively correlated with progesterone concentrations. Canine TSH concentrations were positively correlated with 17‐β‐estradiol concentrations. No significant differences in thyroid hormones and cTSH concentrations were observed between diestrus during pregnancy and pseudopregnancy.ConclusionsDifferent stages of estrus can influence the measurement of TT4 in female dogs.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 79%

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Relationship between thyroid function and sex hormones in female German shepherd dogs

Scarpa,

Tagliasacchi,

Iavazzo

et al. 2023

Veterinary Internal Medicne

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“…There are studies where the relationships between metabolic parameters and condition are described. On the other hand, there are only a few studies on dogs dealing with the relationship between castration and condition [7]. Oestrogen plays an important role in the regulation of energy and fat metabolism and affects the condition of dogs.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nutrition on the Morphometric Markers in Spayed Dogs

et al. 2021

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Obesity and overweight have been frequently observed in dogs in recent years as in humans. The compositions of fatty acids in the accumulated lipids in tissues of obese animals may have important roles in the process and mechanisms related to the onset of metabolic disorders. The purpose of this study was to evaluate the effects of a vegetarian diet, which contained a higher proportion of unsaturated fatty acids on individual morphometric parameters in spayed dogs. Seven mongrel dogs without ideal body condition scores (average: 7.42) were fed vegetarian dog kibbles and received the daily amount of energy calculated with the following formula: 130 kcal × weight (kg) 0.75. The animals were evaluated on days 0 and 60 in relation to the body measurements, such as: body weight, metabolic body weight, body fat percentage, nape, rib, tail base, chest, and abdomen, using a plicometer. Also determined were the body condition scores (scale from 1—thin to 9—obese), canine body mass index, and their waist circumference. These data were analysed by the Student’s t-test. The body measurement variation of body fat percentage, waist circumference, body condition score and thickness values of the abdomen differed significantly (P < 0.01).

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