early weanling and rearing of lambs on milk replacer is an important act to increasing flock productivity. two experiments were carried out to compare the voluntary intake and nutrients digestibility ewe milk and commercial milk replacer and their feeding effects on the growth rate, feed intake and feed efficiency of suckling lambs. in experiment 1, eight lambs (two 4-lamb groups) at 31 to 34 d...

Human breast milk is the best nutritional support that insures the right development and influences the immune status of the newborn infant. However, when it is not possible to breast feed, it may be necessary to use commercial infant formulas that mimic, where possible, the levels and types of nutrients present in human milk. Despite this, some formula-fed infant develops allergy and/or atopic...

This trial tested whether rumen-protected Lys (RPL) supplementation would improve the nutritive value of rumen-undegradable protein (RUP) from corn protein. Thirty-two lactating Holstein cows were blocked by days in milk and parity into 8 squares 4 each replicated × Latin squares. Treatments provided all supplemental crude from: (1) soy (67% expeller soybean meal plus 33% solvent meal); (2) a b...

We examined the effect of calving month (CM) on the production of milk and milk protein by Israeli Holstein dairy cows located in the main climatic zone of Israel during their third and fourth lactations, and found it to be significant. Cows that calved in December produced the highest milk and milk protein yields, and those that calved in June produced the lowest, 92.8% of the maximum. The com...

The 6 main milk proteins in cattle are encoded by highly polymorphic genes characterized by several nonsynonymous and synonymous mutations, with up to 47 protein variants identified. Such an extensive variation was used for linkage analysis with the description of the casein cluster more than 30 yr ago and has been applied to animal breeding for several years. Casein haplotype effects on produc...

Recent advances in processing research and membrane technology have allowed for the fractionation of whey proteins directly from milk. The differences in attributes between whey proteins isolated from milk and those isolated from cheese whey are becoming an important factor for dairy protein processors considering this new avenue for fractionating whey proteins. The symposium will cover membran...

To determine the effect of Dietary Crude Protein (DCP) on milk production and protein metabolism, a two group pre/post experimental design was used. The CP level in the ration fed to the two groups (high, low) of lactating dairy cows was increased by 2% for a period of 21 days. Data from each group was collected regarding manure scores, milk fat, milk protein, Milk Urea Nitrogen (MUN) and overa...

Background: The in vivo quality of milk protein fractions has seldom been studied in humans. Objective: Our objective was to compare the postprandial utilization of dietary nitrogen from 3 [N]-labeled milk products: micellar caseins (MC), milk soluble protein isolate (MSPI), and total milk

PURPOSE Previous studies have examined the response of muscle protein to resistance exercise and nutrient ingestion. Net muscle protein synthesis results from the combination of resistance exercise and amino acid intake. No study has examined the response of muscle protein to ingestion of protein in the context of a food. This study was designed to determine the response of net muscle protein b...

Daily milk, fat and protein yield and amount of somatic cells in cow milk are very important factors that influence milk performance traits. An association between polymorphisms in the kappa casein (CSN3) gene and milk production, composition and technical properties has been previously reported; however, this type of information is not available for the bovine β-carotene oxygenase 2 (BCO2) gen...