ORIGINAL PAPER
An investigation on allele frequency at the CSN1S2 locus and its relationship with milk parameters in the Sarda goat
| 1 |
University of Sassari, Department of Animal Biology,
via Vienna 2, 07100 Sassari, Italy |
| 2 |
Tunisian Institute of Veterinary Research,
Rue Djebel Lakhdhar 20 - La Rabta, 1006 Tunis, Tunisia |
J. Anim. Feed Sci. 2009;18(4):628–637
Publication date: 2009-11-06
KEYWORDS
ABSTRACT
The aim of the study was to assess allele frequencies at the CSN1S2 locus in the Sarda goat and the effects of the genotype on milk composition. Two hundred twenty Sarda goats from 20 farms were selected. Individual blood and milk samples were collected during the middle of lactation and daily milk yield was registered. Fat, protein and lactose percentage, freezing point, pH, somatic cell count and total mesophilic count were measured. DNA was analysed with different methods based on PCR. Allele frequencies, the Hardy Weinberg (HW) equilibrium and the correlations between milk yield and composition and the genotypes were calculated. F (0.400) and A (0.330) alleles showed the highest frequency. D and 0 alleles were not found. Genotype frequencies were the following: AA, 0.136; AB, 0.009; AC, 0.082; AE, 0.032; AF, 0.264; CC, 0.023; CE, 0.023; CF, 0.250; EF, 0.077; FF, 0.105. The population was in HW disequilibrium. No link between the genotypes and milk yield, chemical, physical and cytological parameters was found.
CORRESPONDING AUTHOR
G. M. Vacca 
University of Sassari, Department of Animal Biology,
via Vienna 2, 07100 Sassari, Italy
CITATIONS (5):
| 1. |
The effect of cold acidified milk replacer on productive performance of suckling kids reared in an extensive farming system
G.M. Vacca, M. Pazzola, G. Piras, E. Pira, P. Paschino, M.L. Dettori
Small Ruminant Research
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| 2. |
Quantitative determination of casein genetic variants in goat milk: Application in Girgentana dairy goat breed
Maria Montalbano, Roberta Segreto, Rosalia Di Gerlando, Salvatore Mastrangelo, Maria Teresa Sardina
Food Chemistry
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| 3. |
Goat casein genotypes are associated with milk production traits in the Sarda breed
G. M. Vacca, M. L. Dettori, G. Piras, F. Manca, P. Paschino, M. Pazzola
Animal Genetics
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| 4. |
Effect of polymorphisms at the casein gene cluster on milk renneting properties of the Sarda goat
M. Pazzola, M.L. Dettori, E. Pira, A. Noce, P. Paschino, G.M. Vacca
Small Ruminant Research
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| 5. |
Genetic Variability atαs2-caseinGene inGirgentanaDairy Goat Breed
Marisa Palmeri, Salvatore Mastrangelo, Maria Sardina, Baldassare Portolano
Italian Journal of Animal Science
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