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Effect of milking interval on alveolar versus cisternal milk accumulation and milk production and composition in dairy ewes
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ABSTRACT
Cisternal and alveolar milk fractions were measured in East Friesian crossbred dairy ewes (n = 32) after 4, 8, 12, 16, 20, or 24 h of milk accumulation in a 6 x 6 Latin square design by administration of an oxytocin receptor antagonist for recuperation of cisternal milk followed by injection of oxytocin to remove the alveolar fraction. Less than half (38 to 47%) of the total milk yield was stored within the cistern for the first 12 h of udder filling compared with up to 57% a...
Related newspaper, magazine, and 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)
Prepared Foods
; Today, consumer demands for convenience, safety, good nutrition and sensory satisfaction are the driving forces behind new food product development. Consumer interest in the relationship of food to good health, however, ha never been higher and far outpaces other consumer pressures. Such intense
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Effect of milking interval on alveolar versus cisternal milk accumulation and milk production and composition in dairy ewes
Journal of Dairy Science
; ABSTRACT Cisternal and alveolar milk fractions were measured in East Friesian crossbred dairy ewes (n = 32) after 4, 8, 12, 16, 20, or 24 h of milk accumulation in a 6 x 6 Latin square design by administration of an oxytocin receptor antagonist for recuperation of cisternal milk followed by
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Trans-9, Cis-11 Conjugated Linoleic Acid Reduces Milk Fat Synthesis in Lactating Dairy Cows1
Journal of Dairy Science
; ABSTRACT Under certain dietary situations, rumen biohydrogenation results in the production of unique fatty acids that inhibit milk fat synthesis. The first of these to be identified was trans-10, cis-12 conjugated linoleic acid (CLA), but others are postulated to contribute to diet-induced milk
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Trans-10 Octadecenoic Acid Does Not Reduce Milk Fat Synthesis in Dairy Cows1,2
The Journal of Nutrition
; 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 content of milk fat. Our objective was to directly examine the effect of
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Effect of Safflower Oil, Flaxseed Oil, Monensin, and Vitamin E on Concentration of Conjugated Linoleic Acid in Bovine Milk Fat
Journal of Dairy Science
; ABSTRACT Conjugated linoleic acid (CLA) refers to a mixture of conjugated octadecadienoic acids of predominantly ruminant origin. The main isomer in bovine milk fat is the cis-9, trans-11 CLA. Interest in CLA increased after the discovery of its health-promoting properties, including potent
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Milk Fat Content Measurement by a Simple UV Spectrophotometric Method: An Alternative Screening Method
Journal of Dairy Science
; ABSTRACT We developed a simple microtechnique to measure lipids in milk by UV spectrophotometry. This technique is based upon the property of fatty acids to absorb UV light proportional to their concentration. Samples of powdered or fluid milk (30 or 60 L) were added to 3 mL of analytic grade
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A Field Study of Dietary Interactions with Monensin on Milk Fat Percentage in Lactating Dairy Cattle
Journal of Dairy Science
; 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,
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Effects of Canola Oil Dilution on Anhydrous Milk Fat Crystallization and Fractionation Behavior
Journal of Dairy Science
; ABSTRACT Blends of anhydrous milk fat (AMF) and canola oil (CO) were cooled from 35 to 5C at 0.1C/min, held for 24 h, and centrifuged to separate the liquid and crystalline fractions. The blends' crystallization behaviors and microstructures depended on the level of CO present. Onset and half times
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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
Journal of Dairy Science
; Abstract Trans-10, cis-12 conjugated linoleic acid (CLA) is a potent inhibitor of milk fat synthesis, and the magnitude of milk fat depression is often correlated with the fat content of this isomer. However, the trans-10, cis-12 CLA content does not always correspond to the extent of milk fat
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Abomasal Infusion of Butterfat Increases Milk Fat in Lactating Dairy Cows
Journal of Dairy Science
; ABSTRACT The objective of this study was to compare the effects of abomasal infusion of butterfat containing all fatty acids (FA) present in milk, including the short- and medium-chain FA, with infusion of only the long-chain FA (LCFA) present in milk, on the FA composition and milk fat yield in
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