Effects of prepartum supplementation of β-carotene in Holstein cows

Article Agriculture, Dairy & Animal Science

Serum retinol, β-carotene, and α-tocopherol as biomarkers for disease risk and milk production in periparturient dairy cows

Jaimie M. Strickland et al.

Summary: This study evaluated the association between serum vitamin concentrations and periparturient cow diseases, finding that serum retinol concentrations were negatively associated with hyperketonuria and uterine diseases, while lower retinol concentrations were associated with increased odds of developing diseases in the aggregate outcome. Serum beta-carotene, retinol, and alpha-tocopherol show potential as biomarkers for disease risk in dairy cows.

JOURNAL OF DAIRY SCIENCE (2021)

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Article Agriculture, Dairy & Animal Science

Effect of β-carotene supplementation to prepartum Holstein cows on colostrum quality and calf performance

K. M. Aragona et al.

Summary: Supplementing beta-carotene to cows prepartum can increase the fat and protein content of colostrum, but may decrease the efficiency of IgG absorption in calves. However, beta-carotene supplementation can improve feed efficiency in calves.

JOURNAL OF DAIRY SCIENCE (2021)

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Article Agriculture, Dairy & Animal Science

Vitamin E and beta-carotene status of dairy cows: a survey of plasma levels and supplementation practices

A. E. P. Mary et al.

Summary: The study assessed the blood concentrations of vitamin E and beta-carotene in commercial dairy cows, revealing a significant drop around calving. The majority of surveyed cows were deficient in vitamin E and beta-carotene, with supplementation levels and blood concentrations varying significantly among countries.

ANIMAL (2021)

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Review Agriculture, Dairy & Animal Science

Invited review: The influence of immune activation on transition cow health and performance-A critical evaluation of traditional dogmas

E. A. Horst et al.

Summary: The transition from gestation to lactation in cows is accompanied by significant physiological, metabolic, and inflammatory changes, with the success of this period impacting the entire lactation cycle and potential future lactations. Despite traditional beliefs about the role of adipose tissue mobilization and hypocalcemia in transition period success, recent research suggests that immune activation and inflammation play a crucial role in the adaptive process. The utilization of glucose by the immune system leading to increased NEFA and ketones, coupled with the impact on hypocalcemia, may explain the relationship between immune activation and poor health, production, and reproduction outcomes in dairy cows.

JOURNAL OF DAIRY SCIENCE (2021)

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Article Agriculture, Dairy & Animal Science