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Milk quality
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Selenium (Se) is an essential trace element and has been documented to be important for the health of both animals and humans (Rayman, 2000; McKenzie et al., 1998). However, selenium intake is generally low in many areas of the world, particularly the Nordic countries, where content of selenium in soil is low. Thus, feed for livestock is supplemented with selenium, mostly as inorganic sodium selenite, although bioavailability of inorganic selenium is lower than that of organic forms (Ortman...
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Introduction The essential trace element selenium (Se) is fundamental to mammalian health, influencing growth, immunity, muscle and neuromuscular function and fertility. Westernised cultures, including some European nations, have identified suboptimal intakes of Se according to recent accumulated survey data, a result that may be exacerbated by some modern agricultural practices (Rayman, 2000). A similar situation applies in Australia and New Zealand where Se-deficit status...
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Abstract Restricted suckling during lactation is a widespread practice in cattle managed in dual purpose systems, appreciably reducing saleable milk and its fat content. Early weaning might solve these problems, but it could reduce milk yield after weaning. An experiment was carried out to evaluate the influence of early weaning on milk yield and fat content of crossbred Brahman x Holstein cows with restricted suckling. Twenty four animals were used, machine milked twice daily and...
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An FDA risk assessment that is expected to declare meat and milk derived from cloned animals safe for the food supply is currently being reviewed by the government, and is due to be released by the end of the year.
If these documents are finalized, cloned animal products will become part of the food supply, without the requirement for such foods to carry special labeling. And this could result in a backlash of absence claims, with ‘clone-free' products starting to appear on supermarket...
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Abstract Restricted suckling is a characteristic of dual purpose cattle systems found in tropical America and has a series of advantages over artificial rearing, such as higher milk yield and calf live weight gain, together with lower incidence of mastitis. However, an important limitation of this practice is the complicated management during milking. It implies appropriate installations for machine milking, high labour requirements, difficulties in handling large calves and...
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