According to investigation and clinical practice, the main causes of left displaced abomasums of milk cow were discussed. Improving feed prescription could guard against the disease.

根据调查和临床实践，讨论了奶牛真胃变位发生的主要原因和机理。改善日粮配方可有效预防该病的发生。

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The fat content of raw milk varies with cow breed, feed, and stage of lactation among other factors.

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They sometimes barter, trading milk and cow dung for grass to feed their livestock.

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