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Polymorphism of Growth Hormone GH1-AluI in Jersey Cows and Its Effect on Milk Yield and Composition
Dario, C.,Carnicella, D.,Ciotola, F.,Peretti, V.,Bufano, G. Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.1
To analyze genetic effects on milk production traits, 164 unrelated Italian Jersey cows reared in 15 farms located in Southern Italy were characterized at the growth hormone locus. Using a Polymerase Chain Reaction-Restriction Fragment Length Polymorphism protocol all three possible genotypes for the Leucine/Valine polymorphism were identified even if in the considered population the number of homozygous animals (Leucine/Leucine = 36; Valine/Valine = 28) was smaller than Leucine/Valine (n = 100) cows; the Hardy-Weinberg equilibrium was verified. Statistical analysis showed that daily milk yield in the Leucine/Leucine genotype was higher (p<0.01) than in Leucine/Valine (22.76 kg vs. 16.96 kg ); cows with Leucine/Valine genotype differed significantly from Leucine/Leucine and Valine/Valine genotypes particularly in fat (4.95% vs. 4.13% and 4.82%, respectively) and protein content (4.00% vs. 3.47% and 3.79%, respectively). No significant effect on lactation length was observed.
Ming-Chun Wang,Chia-Ying Chan,Christian de Peretti,Hong-Min Chen 한국증권학회 2017 Asia-Pacific Journal of Financial Studies Vol.47 No.5
This study examines the volatility spillover effect among five index options and their underlying markets. Results show that the bidirectional volatility spillover effect and the cross-market leverage effect exist between index options and their underlying markets. Our findings confirm that the volatility spillover effect is generally outweighed by shocks in the underlying market, and that the options implied price volatility is provoked by the information shock occurring in both the cash and options markets to a higher degree. Through the volatility impulse response function, this study shows that the options implied prices are more sensitive to innovations in both markets.