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• Examination of Fattening and Slaughtering Performance of Hungarian Merino, Ile de France F1 and Suffolk F1 Lambs

  16-23

  Péter Póti

  Ferenc Pajor

  Edina László

  Views:

  96

  In our examination, we evaluated Hungarian Merino (ram n=30, ewe n=30), Ile de France F₁ (ram n=10, ewe n=10) and Suffolk F1 (ram n=10, ewe n=10) lambs. The best fattening performance was shown by the Ile de France F₁ lambs (361 g/day). After the fattening period, Hungarian Merino, Ile de France F₁ and Suffolk F₁ genotypes lambs were slaughtered with a live weight of 30-34 kg. Carcasses were evaluated for dressing percentage, weight of valuable carcass cuts, percentage of valuable meat, bone to meat ratio, as well as meat conformation and fat cover (S/EUROP grading).
  The slaughter performance proved to be the best for the Suffolk F₁ concerned dressing percentage (51,7%), percentage valuable carcass cuts (81,9%). The best percentage valuable meat presented (79,4%) the Ile de France F1 lambs. The best meat conformation and fat covered were in the Suffolk F₁ lambs; Hungarian Merinos showed less favourable results.
  Presently, the results derived from Hungarian practice that Hungarian Merino lambs are not eligible for fattening to great live body weight (30 kg). Therefore, it is necessary to revise the Hungarian Merino lambs with meat sheep breeds.

• Study of the rams’ jumping order

  59-62

  János Oláh

  Nóra Vass

  Szilvia Kusza

  János Posta

  Anna Pécsi

  Andrea Radácsi

  Attila Harcsa

  Gergely Gyimóthy

  András Kovács

  András Jávor

  Views:

  150

  The bevahiour of Babolna Tetra, Ile de France and Suffolk rams was studied at semen collection by artificial vagina. The sequence of rams coming out of the group to the place of semen collection and the number of jumpings needed to ejaculation were observed. It was investigated if there were changes in these characters at different occasions, and did they show connection to the body condition. The number of jumpings before ejaculation was different in the different breeds. Semen was taken at the first jump from 63% of the Suffolk, 56% of the Babolna Tetra and 55% of the Ile de France rams. There was no early ejaculation at the Ile de France, but it was common among the Suffolk rams. The greatest changes in the jumping order between different semen collections were observed in the Babolna Tetra breed. There was a medium correlation in the Suffolk breed between the jumping order and body condition in the autumn and spring, which was tight and significant in winter.

• Lambing Frequency in the Ile de France, Suffolk and Babolna TETRA Stocks of Babolna c.o., Szendrő

  29-32

  Attila Harcsa

  Gábor Pál

  István Komlósi

  András Jávor

  Views:

  203

  Lambing frequency of three different genotypes was evaluated in the breeding stock of Babolna c.o. Szendrő. Ile de France, Suffolk and Babolna TETRA breeding ewes gave the data for the further evaluation. The main aim of this research was to find out if there is any significant effect of selected parameters (registration class, lambing season, lambing type and the years) on the lambing frequency, the period between consecutive lambings. Production parameters of 9,471 Ile de France, 1,244 Suffolk and 7,618 Babolna TETRA ewes were collected and processed. The analysis covered the period between the years 1989-1999. It was concluded that not all of the evaluated parameters had a significant effect on lambing frequency. Not all of the genotypes showed significant differences, according to the examined parameters.

• The Fatty Acid Composition of Different Lamb Genotypes

  30-33

  Zsófia Rózsáné Várszegi

  Views:

  83

  We compares the fatty acid composition of five different genotypes. The maternal line was Hungarian Comb Merino x British Milksheep and this genotype was crossed with different terminal breeds, like: British Milksheep, Suffolk, Ile de France, German Mutton Merino, German Blackheaded. We compared the intramuscular fatty acid composition of different body parts like: leg, loin and shoulder. We can name that there are significant differences between the genotypes in the fatty acid composition. The suffolk crosses has the best UFA/SFA rate. In the meat of German Mutton Merino crosses has a high saturated fatty acid ratio, but there is a high polyunsaturated fatty acid ratio as well. There are only small differences between the meat parts in the view of fatty acid composition. Despite the small differences, the loin showed the best picture while the shoulder had the worst.