By Brydl, E., Magyar Allatorvosok Lapja, 1999
Description
A remarkable increase of annual milk production has been seen in Hungary during the last three decades. Due to high milk production, the nutritional demand of the dairy cows became higher and in many cases the feed intake failed to meet the requirement of high producing animals inducing metabolic disorders acid losses. The majority of the losses (decreased milk production, Increased occurrence of lameness, mastitis etc.) were caused by subclinical cases. During the last 7 years, metabolic profile tests have been performed at 130 large scale dairy farms with a total population of 80,000 head of Holstein-friesian cows in order to reveal malnutrition-caused subclinical metabolic diseases. During the 7 years, 5192 dairy cows were sampled selected randomly from the herd examined, The following groups were tested: I. = 1-2 weeks prior to expected parturition, II. = 1-7 days after calving, III. = 2-3 weeks after calving, IV. = 6-8 weeks after calving (at peak lactation), V. = mid-lactation, VI. = heifers, The results of the study are summarised in Table 1
A remarkable increase of annual milk production has been seen in Hungary during the last three decades. Due to high milk production, the nutritional demand of the dairy cows became higher and in many cases the feed intake failed to meet the requirement of high producing animals inducing metabolic disorders acid losses. The majority of the losses (decreased milk production, Increased occurrence of lameness, mastitis etc.) were caused by subclinical cases. During the last 7 years, metabolic profile tests have been performed at 130 large scale dairy farms with a total population of 80,000 head of Holstein-friesian cows in order to reveal malnutrition-caused subclinical metabolic diseases. During the 7 years, 5192 dairy cows were sampled selected randomly from the herd examined, The following groups were tested: I. = 1-2 weeks prior to expected parturition, II. = 1-7 days after calving, III. = 2-3 weeks after calving, IV. = 6-8 weeks after calving (at peak lactation), V. = mid-lactation, VI. = heifers, The results of the study are summarised in Table 1
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