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Where did this old wise tale come from
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<blockquote data-quote="jnowack" data-source="post: 218490" data-attributes="member: 3954"><p>FOUND A RECENT STUDY THAT CONTRADICTS THE OLD SCHOOL OF THOUGHT.</p><p>Studies indicate that a dairy cow that provides a large volume of first-milk colostrum will generally have a lower concentration of Ig per milliliter of milk than cows giving smaller amounts of colostrum. In the past, it has been generally accepted that the colostrum of a first-calf heifer was lower in quality than that of second-calf lactations. Recent studies conclude the opposite is true. While first-calf heifers will tend to give lower volumes of colostrum, the Ig concentration is greater than that of second lactation cows. It has been common practice to pool colostrum on dairy farms and freeze to for future use. Dr. Corbett discourages pooling because dairies tend to have high concentrations of cows that are second lactation or greater. This will tend to dilute the Ig concentration of pooled colostrum. Further, the practice increases the possibility of one cow shedding Salmonella bacteria contaminating the colostrum pool and spreading bacteria to a large number of cows.</p><p></p><p>MORE CONFUSION</p></blockquote><p></p>
[QUOTE="jnowack, post: 218490, member: 3954"] FOUND A RECENT STUDY THAT CONTRADICTS THE OLD SCHOOL OF THOUGHT. Studies indicate that a dairy cow that provides a large volume of first-milk colostrum will generally have a lower concentration of Ig per milliliter of milk than cows giving smaller amounts of colostrum. In the past, it has been generally accepted that the colostrum of a first-calf heifer was lower in quality than that of second-calf lactations. Recent studies conclude the opposite is true. While first-calf heifers will tend to give lower volumes of colostrum, the Ig concentration is greater than that of second lactation cows. It has been common practice to pool colostrum on dairy farms and freeze to for future use. Dr. Corbett discourages pooling because dairies tend to have high concentrations of cows that are second lactation or greater. This will tend to dilute the Ig concentration of pooled colostrum. Further, the practice increases the possibility of one cow shedding Salmonella bacteria contaminating the colostrum pool and spreading bacteria to a large number of cows. MORE CONFUSION [/QUOTE]
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