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A Field Study of Dietary Interactions with Monensin on Milk Fat Percentage in Lactating Dairy Cattle
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ABSTRACT
Ninety-one Ontario Holstein dairy herds were surveyed about their lactating cow ration and use of a premix containing monensin to identify possible dietary interactions with monensin on milk fat suppression. All herds were enrolled in Ontario Dairy Herd Improvement (DHI) milk recording, and results from four DHI tests were used. Herd mean fat tests were calculated only for cows between 100 and 200 d in milk to avoid potential confounding due to stage of lactation. Wet forage and total mixed ration (TMR) samples from all herds were evaluated for particle size using the Penn State ...
Related newspaper, magazine, and trade journal articles from HighBeam Research
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Milk fat secrets: researchers develop a value-added edge. (includes related article on milk fat modifications)
; ...intense focus on nutrition has exposed milk fat to criticism. As a consequence, many consumers...Assoc. Because the sensory attributes of milk fat are unique-as are its physical performance...Researchers are studying not only how milk fat can be modified to meet consumer demands...
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Trans-10, Trans-12 Conjugated Linoleic Acid Does Not Affect Milk Fat Yield but Reduces [Delta]^sup 9^-Desaturase Index in Dairy Cows1
; ...linoleic acid (CLA) is a potent inhibitor of milk fat synthesis, and the magnitude of milk fat depression is often correlated with the fat...does not always correspond to the extent of milk fat depression, and in some instances, an increase...
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Trans-9, Cis-11 Conjugated Linoleic Acid Reduces Milk Fat Synthesis in Lactating Dairy Cows1
; ...production of unique fatty acids that inhibit milk fat synthesis. The first of these to be identified...postulated to contribute to diet-induced milk fat depression (MFD). Our objective was to...trans-9, cis-11 CLA in the regulation of milk fat. In a preliminary study, we used ...
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Effects of Monensin and Dietary Soybean Oil on Milk Fat Percentage and Milk Fatty Acid Profile in Lactating Dairy Cows
; ...yield was not significant. Monensin reduced milk fat yield by 6.6%. Soybean...These results suggest that monensin reduces milk fat percentage and this effect...Key words: dairy cow, monensin, soybean oil, milk fat percentage INTRODUCTION...
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Milk Fat Content Measurement by a Simple UV Spectrophotometric Method: An Alternative Screening Method
; ...Milko-Scan, a device that measures milk fat by IR spectroscopy, with an r^sup...alternative screening method to estimate milk fat content in small samples without prior lipid extraction. (Key words: milk fat, UV-spectrophotometry, lipid measurement...
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Effects of Canola Oil Dilution on Anhydrous Milk Fat Crystallization and Fractionation Behavior
; ABSTRACT Blends of anhydrous milk fat (AMF) and canola oil (CO) were cooled...dilution also influenced the polymorphism of milk fat. Whereas only the β' polymorph was...This strategy of using CO to fractionate milk fat was limited by the poor separation of...
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Processing Effects on Physicochemical Properties of Creams Formulated with Modified Milk Fat
; ...physicochemical properties of natural cream (20% milk fat) and creams formulated with 20% low-me...before pasteurization contained more milk fat surface material, higher phospholipid levels, and less protein at the milk fat interface than creams homogenized...
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Trans-10 Octadecenoic Acid Does Not Reduce Milk Fat Synthesis in Dairy Cows1,2
; Abstract Diet-induced milk fat depression (MFD) involves the interrelation between rumen fermentation and mammary synthesis of milk fat, and the reduction in milk fat coincides with a marked increase in the trans-10 18:1...
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A Meta-Analysis of the Impact of Monensin in Lactating Dairy Cattle. Part 2. Production Effects
; ...production efficiency by 2.5%. Monensin decreased milk fat percentage 0.13%, but had...condition. The effect of monensin on milk fat percentage and yield was...outcome is the impact of monensin on milk fat percentage. There is both...
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Effects of Intravenous Infusion of Conjugated Diene 18:3 Isomers on Milk Fat Synthesis in Lactating Dairy Cows
; ...linoleic acid plays an important role in milk fat depression (MFD). However, in many...dietary induced MFD, the reduction in milk fat synthesis is much greater than what would be predicted based on the milk fat concentration of trans-10, cis-12 18...
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