Effect of a 60-day organic selenium-supplemented diet on the decrease of somatic cell counts in goat milk

Vasconcelos, Angela Maria de; Martins, Thays Paulina; Souza, V. A. B. de; Bonfim, Joice Melo; Pompeu, Roberto Cláudio Fernandes Franco; Façanha, Débora Andréa Evangelista; Pereira, Patrício Leandro; Ferreira, Josiel; Silveira, Robson Mateus Freitas

doi:10.1007/s11250-023-03526-2

Cited by 4 publications

(2 citation statements)

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“…In the present study, the supplementation of SY to the diet in lactating donkeys resulted in a linear decrease in SCC, and doses of 0.3 and 0.5 mg/kg were found to be more effective. Se supplementation plays an important role in reducing oxidative stress, protecting udder health, and decreasing the incidence of mastitis [ 33 , 48 ]. Various studies on dairy cows [ 31 , 39 ] and dairy goats [ 48 , 49 ] have shown that Se supplementation can reduce SCC in milk, which is consistent with our results.…”

Section: Discussionmentioning

confidence: 99%

“…Se supplementation plays an important role in reducing oxidative stress, protecting udder health, and decreasing the incidence of mastitis [ 33 , 48 ]. Various studies on dairy cows [ 31 , 39 ] and dairy goats [ 48 , 49 ] have shown that Se supplementation can reduce SCC in milk, which is consistent with our results. The reduction in SCC indicated that the addition of SY in this trial improved mammary health in lactating donkeys, which probably resulted from improved antioxidant and immune function.…”

Section: Discussionmentioning

confidence: 99%

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Effects of Dietary Selenium Yeast Supplementation on Lactation Performance, Antioxidant Status, and Immune Responses in Lactating Donkeys

Tong,

Li,

Hui

et al. 2024

Antioxidants

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Donkey milk is a traditional medicinal food with various biological activities. However, its production is very low, and lactating donkeys often experience oxidative stress, leading to a further decline in milk yield. In this study, we supplemented the diets of lactating donkeys with yeast selenium (SY) to investigate its effects on lactation performance, antioxidant status, and immune responses, and we expected to determine the optimum additive level of SY in the diet. For this study, 28 healthy lactating Dezhou donkeys with days in milk (DIM, 39.93 ± 7.02 d), estimated milk yield (EMY, 3.60 ± 0.84 kg/d), and parity (2.82 ± 0.48) were selected and randomly divided into 4 groups of 7 donkeys in each: Group SY-0 (control), Group SY-0.15, Group SY-0.3, and Group SY-0.5, with selenium supplementation of 0, 0.15, 0.3, and 0.5 mg of Se/kg DM (in form of SY) to the basal diet, respectively. The results showed a dose-dependent increase in milk yield, milk component yield, milk protein production efficiency, milk production efficiency, the activities of glutathione peroxidases (GSH-Px), catalase (CAT), and total antioxidant capacity (T-AOC), as well as the content of serum interleukin-10 (IL-10), white blood cells (WBC), lymphocytes (LYM), red blood cells (RBC), hematocrit, plasma selenium, and milk selenium. Conversely, it presented a dose-dependent decrease in the activity of nitric oxide synthase (iNOS) and the contents of malondialdehyde (MDA), reactive oxygen species (ROS), nitric oxide (NO), interleukin-1β (IL-1β), interleukin-6 (IL-6), and interferon-γ (IFN-γ). In conclusion, the results confirmed that dietary supplementation with SY can improve lactation performance, antioxidant status, and immune responses in lactating donkeys, and the recommended dose of SY was 0.3 mg/kg.

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