A META-ANALYSIS OF THE IMPACT OF PLANT OILS RICH IN 18: 2N-6 ON MILK FATTY ACID COMPOSITION IN LACTATING COWS

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VAZIRIGOHAR M.; DEHGHAN BANADAKY M.; REZAYAZDI K.; NEJATI JAVAREMI A.

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Journal: ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ) Year:2015 | Volume:25 | Issue:1 Page(s): 123-140

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Title

A META-ANALYSIS OF THE IMPACT OF PLANT OILS RICH IN 18: 2N-6 ON MILK FATTY ACID COMPOSITION IN LACTATING COWS

Author(s)

VAZIRIGOHAR M. | DEHGHAN BANADAKY M. | REZAYAZDI K. | NEJATI JAVAREMI A. | Issue Writer Certificate

Keywords

MILK FATQ2

PLANT OILQ2

LACTATING COWQ2

META-ANALYSISQ2

Abstract

BACKGROUND: Including PLANT OILs rich in unsaturated fatty acids in LACTATING COW diets can be used as a nutritional strategy to alter MILK FATty acid composition for long-term human health. OBJECTIVES: Effects of dietary PLANT OILs rich in 18: 2n-6 (POLA) on MILK FATty acid (FA) composition in LACTATING COWs, using META-ANALYSIS and meta-regression approach were evaluated. METHODS: Twenty experiments containing 27 comparisons between treatment and control groups, which met the selection criteria, were used. Two levels of supplementing POLA were evaluated: £ and>30 g/kg diet DM. RESULTS: The POLA, at both level, reduced relative proportions of 6: 0–16: 0, enhanced 18: 0, cis (D9–12, and 15) and trans 18: 1 (D6−4), 18: 2n-6, cis -9, trans -11 CLA, and trans -10, cis -12 CLA, whereas approximately 20 g/kg DM oil supplementation had no effect on 4: 0 and 18: 3n-3 concentrations in MILK FAT. Results of meta-regression showed that dietary 18: 2n-6 content explained more than 55% of variation in results of 8: 0–15: 0. Dietary total FA content differences, grain level of basal diets, and parity were the sources of heterogeneity in milkcis -9 18: 1. Milk trans-11 18: 1 increased with increased dietary 18: 2n-6 content and forage level of basal diets. Safflower oil>sunflower oil>corn oil>soybean oil>cottonseed oil induced higher standardized mean difference of milk 18: 2n-6, trans -10, cis -12 CLA and 18: 0 content. CONCLUSIONS: Feeding POLA lowered milk saturated FA and increased trans, monounsaturated and polyunsaturated FA.

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APA: Copy

VAZIRIGOHAR, M., DEHGHAN BANADAKY, M., REZAYAZDI, K., & NEJATI JAVAREMI, A.. (2015). A META-ANALYSIS OF THE IMPACT OF PLANT OILS RICH IN 18: 2N-6 ON MILK FATTY ACID COMPOSITION IN LACTATING COWS. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), 25(1), 123-140. SID. https://sid.ir/paper/147494/en

Vancouver: Copy

VAZIRIGOHAR M., DEHGHAN BANADAKY M., REZAYAZDI K., NEJATI JAVAREMI A.. A META-ANALYSIS OF THE IMPACT OF PLANT OILS RICH IN 18: 2N-6 ON MILK FATTY ACID COMPOSITION IN LACTATING COWS. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ)[Internet]. 2015;25(1):123-140. Available from: https://sid.ir/paper/147494/en

IEEE: Copy

M. VAZIRIGOHAR, M. DEHGHAN BANADAKY, K. REZAYAZDI, and A. NEJATI JAVAREMI, “A META-ANALYSIS OF THE IMPACT OF PLANT OILS RICH IN 18: 2N-6 ON MILK FATTY ACID COMPOSITION IN LACTATING COWS,” ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), vol. 25, no. 1, pp. 123–140, 2015, [Online]. Available: https://sid.ir/paper/147494/en

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