Validation of a handheld refractometer to assess Merino ewe colostrum and transition milk quality

Agenbag, Bianca; Swinbourne, Alyce M.; Petrovski, Kiro; Wettere, W. H. E. J. van

doi:10.3168/jds.2022-22022

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…The Brix refractometer has also been proven to be a valuable tool for estimating the total protein concentration in sheep [7] and cow [12] colostrum samples. In fact, in a previous study on the colostra of Valle del Belice sheep, a high and positive correlation (r=0.90) was found between the Brix value and the colostrum protein percentage [13]; similar results (r=0.72) were found in Merino sheep colostra that were sampled 24 h after lambing [14]. Finally, Floren et al [15] reported that a Brix refractometer can be beneficial in estimating the concentration of total solids in milk replacement mixes to help monitor the milk replacement feeding consistency.…”

Section: Introductionsupporting

confidence: 60%

The Use of a Digital Brix Refractometer to Estimate Cheese-Making Constituents in Ewes’ Milk

Todaro,

Gannuscio,

Mancuso

et al. 2023

Preprint

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In this study, 737 individual sheep milk samples were collected to evaluate the relationships between Brix refractometer measurements and milk constituents—particularly, protein and fat percentages—with the aim of verifying the ability of the refractometer to predict milk constituents. The Pearson's simple (rSP) and partial (rPP) correlations between milk constituents were calculated, and several first- and second-order regressions were tested to predict the protein and fat percentages. The results of the forecasts can be considered satisfactory only for the simple regression that predicted the percentage of milk protein through the measurements read with the Brix refractometer (PRT = -2.996 + 0.639*Brix), while the regression that predicted the percentage of fat + milk protein presented a weak forecasting capacity, which was probably due to the absence of partial correlations between the Brix refractometer measurements and the fat percentage.

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Section: Introductionsupporting

confidence: 60%

The Use of a Digital Brix Refractometer to Estimate Cheese-Making Constituents in Ewes’ Milk

Todaro,

Gannuscio,

Mancuso

et al. 2023

Preprint

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“…But RID is an expensive laboratory method and requires time for results. Although it is not well-accurate, in farm-practice the best method is brix refractometry to evaluate colostrum quality because of it is fastest and easiest method [74]. Another method is Split trehalase immunoglobulin G assay (STIGA) that used in bovine colostrum [75].…”

Section: Evaluation Methodsmentioning

confidence: 99%

Colostrum Induced Passive Immune Transfer in Lambs

Ovet

2023

Preprint

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During last decades, production and consumption of small ruminant milk has been increased. As a result of it, sheep and goat farming has been developing and scientists are focused on these animal researches both clinical and feeding strategies. By the evolutionary challenges and adaptations, colostrum has a crucial role of immune complementation for litter. As a result of these challenges and adaptations neonatal life is especially more important in ruminants because of it affects their whole life and future of livestock. Passive immune transfer is the main mechanism that explained by biological evolution between dam and lamb and also it is effected by factors up to dam and up to the litter. Today importance of passive immune transfer is well known for the future of livestock economy and animal welfare. In the literature, researchers are focused on correlation between colostrum quality (especially immunoglobulin amounts) and blood serum levels of newborns. Aims of present review are to discuss datas of recent studies, point out different effecting factors in colostrum quality and passive immune transfer, enlighten and give new ideas to researchers.

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“…However, RID is an expensive laboratory method and requires time for results. Although it is not well-accurate, in farmpractice the best method is brix refractometry to evaluate colostrum quality because it is fastest and easiest method (Agenbag et al, 2023). Another method is Split trehalase immunoglobulin G assay (STIGA) that used in bovine colostrum (Drikic et al, 2018).…”

Section: Evaluation Methodsmentioning

confidence: 99%

Colostrum induced passive immune transfer in lambs

ÖVET

2023

Journal of Istanbul Veterinary Sciences

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During last decades, the production and consumption of small ruminant milk have been increased. As a result of this, sheep and goat farming have been developing and scientists are focused on clinical and feeding strategy researches on these animals. By the evolutionary challenges and adaptations, colostrum has a crucial role in immune complementation for litter. As a result of these challenges and adaptations neonatal life is more important especially in ruminants due to its lifetime effect and the future of livestock. The passive immune transfer is the main mechanism explained by biological evolution between the dam and lamb which is influenced by certain factors related to both dam and litter. Today the importance of passive immune transfer is well known for the future of livestock economy and animal welfare. In the literature, researchers are focused on correlation between colostrum quality (especially immunoglobulin concentration) and blood serum levels of immunoglobulin levels in newborns. The aims of the present review are to discuss data of recent studies and how passive immune transfer occurred in lambs as well as effecting factors and to supply new ideas to researchers.

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Validation of a handheld refractometer to assess Merino ewe colostrum and transition milk quality

Cited by 6 publications

References 36 publications

The Use of a Digital Brix Refractometer to Estimate Cheese-Making Constituents in Ewes’ Milk

The Use of a Digital Brix Refractometer to Estimate Cheese-Making Constituents in Ewes’ Milk

Colostrum Induced Passive Immune Transfer in Lambs

Colostrum induced passive immune transfer in lambs

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