Analysis of Environmental Factors’ Impact on Donkeys’ Colostrum Quality

Abstract

Abstract:Colostrum is a natural product, issued by both mammals and humans in the first week of lactation. Among different species, donkey colostrum is considered to have, in addition to a valuable composition in nutrients and immune factors, an outstanding similitude with human colostrum. In this context, and taking into account the scarcity of available data concerning the interaction between climate factors and colostrum quality, a trial was conducted aiming to identify the possible influence of environmental factors on donkey colostrum nutritional traits. A stock of 175 jennies from 7 farms located in Cluj and Sălaj Counties was analyzed over a 7-day postpartum period. During the experimental period, the daily temperature, humidity, and wind velocity data were collected. Strong positive correlations are reported between the studied colostrum nutritional traits (fat, protein and lactose). Testing the impact of some environmental parameters upon nutritional content of donkey colostrum indicated three factors that have an influence on the nutritional quality of donkey milk colostrum, labelled as: colostrum nutritional traits, environmental air traits and some colostrum nutritional traits, and climatic traits and some colostrum nutritional traits.

HEAVY METALS AND PHYSICO-CHEMICAL COMPOSITION OF MATERNAL BREAST MILK AND COLOSTRUM. Scientific Bulletin. Series F. Biotechnologies, Volume XXIII, 2019, pp 92-102.

“…Moreover, minimal concentration of Fe was observed in samples from Sălaj (0.71±0.02) and Bistrița-Năsăud (0.85±0.04), mg/l. Futhermore, resulted Fe values in breast milk are higher than concentrations reported in studies from Australia (Mohd-Taufek et al, 2016), Sweeden (Björklund et al, 2012), and Turkey (Altun et al, 2018), 47±99, 339±134 μg/l and 1.65±1.43 mg/l, respectively. (Mohd-Taufek et al, 2016;Björklund et al, 2012;Altun et al, 2018).…”

“…Futhermore, resulted Fe values in breast milk are higher than concentrations reported in studies from Australia (Mohd-Taufek et al, 2016), Sweeden (Björklund et al, 2012), and Turkey (Altun et al, 2018), 47±99, 339±134 μg/l and 1.65±1.43 mg/l, respectively. (Mohd-Taufek et al, 2016;Björklund et al, 2012;Altun et al, 2018). The results regarding Zn concentrations are in concordance with Taufek et al ( 2016) that obtained similar concentrations of this element in milks samples (1390±211 µg/l).…”

“…Lactoscan (Milk analyzer Lactoscan) device was used for physico-chemical analysis. A method previously reported by (Marchis et al, 2018). The following % of parameters were determined: fat, protein and lactose.…”

Alternatives in Donkey semen cryopreservation: Mare vs. Jenny Colostrum

“…According to different studies that have been conducted (Marchis et al., ; Salimei et al., ), jenny and mare colostrum have different composition. Mare colostrum has higher amount of lactose, which might affect sperm quality.…”

“…A recent study has demonstrated that jenny colostrum added to an extender for freezing donkey semen yielded high sperm quality after thawing in comparison to egg yolk extenders (Álvarez, Luño, González, & Gil, ). We investigated if the addition of mare colostrum and jenny colostrum, which differ in their composition (Brumini, Criscione, Bordonaro, Vegarud, & Marletta, ; Marchis et al., ; Salimei et al., ), could have the same protective effect in donkey sperm cryopreservation.…”