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Abstract

A least-squares analysis of 10 896 reproductive performance records of Slovakian Pied (SP), Holstein and Holstein × SP cows was carried out. The crossbreds comprised groups with 50-96.8% Holstein inheritance. The traits analysed were interval from calving to 1st insemination, interval between ...

Author(s)
Huba, J.; Peškovičová, D.; Chrenek, J.; Kmet, J.
Citation
Živočišná Výroba, 1996, 41, 8, pp 333-338
Abstract

Data were obtained on 204 GL Iv-f (White Italian X Rhenish), 22 Slovakian Danube (White Slovakian X Embden X White Hungarian) and 43 Landes ganders aged 1-2 yr. In the 3 groups resp., body weight averaged 4805, 6533 and 5790 g (CVs = 12.0, 13.6 and 12.1% resp.), penis length 51.2, 45.2 and 43.8 mm...

Author(s)
Stasko, J.; Masar, T.; Spronc, A.
Citation
Acta Zootechnica, Nitra, 1973, 26, pp 65-75
Abstract

The size of the 1st litter in 15 imported gilts averaged 7.7 v 9.3 in 46 gilts born in acclimatized herds (P<0.05). In older sows, the relationship was similar (8.1 v 9.9, P<0.01). Differences between imported and acclimatized ♀♀ in body weights of piglets at birth, 21 and 42 days of age were not significant.
Artificial Insemination and Semen Characters.

Author(s)
Zilla, T.; Majerciak, P.; Cupka, V.; Poltársky, J.
Citation
Polnohospodarstvo, 1969, 15, pp 1073-1081
Abstract

12 Pekin and 8 Muscovy drakes were studied. For the 2 breeds resp., ejaculate volume averaged 0.19 and 0.14 ml, and sperm concentration 6 847 000 and 638 000/mm3. 75% of Pekin males produced an ejaculate at the 1st attempted collection, and the percentage of successful collections afterwards was...

Author(s)
Stasko, J.; Csuka, J.; Majna, R.; Spronc, A.
Citation
Vedecke Prace - Hydinarstvo, No. 16, pp 79-84

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