Evaluation of some environmental and genetic factors (CSN3 and AGPAT6 gene) on milk yield and composition in Saanen goats

This study was designed to determine the effect of some environmental factors on milk yield and composition in Saanen goats CSN3 AGPAT6 gene polymorphisms production traits. were genotyped for traits, samples collected during lactation, yield/compositions each goat specified. In terms genes, genotypes defined by PCR-RFLP. The (MY), lactation length (LL), protein, fat, total solid (TS), not fat (SNF), casein, lactose rates yields as follows; 388.9 ± 17.5 kg, 243 5.81 days, 3.29 0.05%, 3.59 0.07%, 11.60 0.13%, 8.43 0.06%, 2.57 0.04%, 4.31 0.03%, 11.21 0.47 12.79 0.64 40.95 1.82 29.53 1.31 8.82 0.37 15.40 0.74 kg respectively. determined genotype allele frequencies FF (%99.20), MF (%0.80), F (0.996), M (0.004); GG (%12), GC (%43.20), CC (%44.80), G (0.336), C (0.664). impacts all parameters (protein, TS, SNF, lactose, MY) (P<0.001); age (P<0.001) casein (P<0.05), TS rate LL (P<0.01) found be significant. birth type significantly affect any parameters. Although showed variation (g.9263C>G), herd monomorphic (FF) gene. traits statistically Environmental factors, such maternal length, goats. So consideration or could useful improving breeding strategies dairy