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• The analysing of value measuring features of Hungarian speckled hen

  17-23

  Ákos Benk

  Lajos Vidács

  Ágnes Baginé Hunyadi

  Imre Mucsi

  Views:

  56

  Our College has been dealing with the crossbreeding of two Hungarian speckled hen breeds, the bare-neck and the featheredneck, to maintain the breeds since 1977. Apart from the gene preservation, we endeavour to find the best way for the production-purpose utilisation of the speckled hen stock. On the basis of our experiments the laying hens can be used in small-scale egg production. As for meat production, these pure-breds cannot compete with the various types of the colour-feathered hybrid constructions available in Hungary. On the basis of the results of the cross-breeding with cock-lines of various hybrid types for direct production purposes we can conclude that the Hungarian speckled hen is suitable as a mother line to produce meat-type chickens in alternative breeding systems.

• Correlation between body condition change and reproduction parameters of Holstein-Frisian cows after calving

  49-52

  Edit M. J. Jónás

  Imre Mucsi

  István Komlósi

  Views:

  129

  The authors examined the body condition with relation to reproduction of Holstein-Friesian cows on three dairy farms in the South Plain region. During the examination they analyzed the data of 516 births of 494 Holstein-Friesian cows. They were trying to find correlation between the first service, the service period and the service rates. The examinations with regard to the correlations were different from the ones published in the professional literature. The body condition at the time of calving affected the interval from calving to the first service but not the conception
  rates or the service period. The examinations did not prove any correlations between body condition changes and reproduction.

• The evaluation of body condition scoring of Holstein-Friesian cows

  57-61

  Edit Mikó Józsefné Jónás

  Imre Mucsi

  István Komlósi

  Views:

  131

  We carried out the examinations on a farm of 500 cows where We examined the body condition of the stock every month. We recorded the body condition data together with the milk production and calving data. We analysed the daily milk production as well as the body condition. During the examinations we sought an answer how the body condition and the production level change during the lactation period.

• The trend of cowmilk yield, its compostion and the body condition during the lactation

  69-73

  Edit Mikó Józsefné Jónás

  Imre Mucsi

  István Komlósi

  Views:

  150

  The authors examined the data of 2767 trial milkings andthe months Body Condition Scores of 479 Holstein dairy cows. The condition loss was significant between the 30-60th days. The improvement of BCS begins only after the 120th day. The change in the milk protein and milk fat content were close after the condition changing. In each period of the lactation the closeness of the relationship among the condition, the milk quantity and the milk composition were different. In the aspect of the milk quantity the most significant difference was between the 2.5 and 4 BCS cows (6.68 kg) in the last period of the lactation.