Polymorphisms of leptin, β-lactoglobulin and pituitary transcription factor have no effect on milk characteristics in crossbred cows

Abstract

Polymorphisms of leptin, β-lactoglobulin and pituitary transcription factor have no effect on milk characteristics in crossbred cows [Polimorfismos da leptina, β-lactoglobulina e fator de transcrição da hipófise não afetam as características do leite em vacas mestiças]

Exploring the relationship between polymorphisms of leptin and IGF-1 genes with milk yield in indicine and taurine crossbred cows

“…Other reports showed that C/BspEI/T and C/HphI/T poly-morphisms of leptin gene is associated with milk protein percentage, whereas the C/HphI/T locus of leptin is significantly associated with Solid non fat (SNF) percentage (Singh et al, 2014). Contrary to our findings, Ferreira et al (2019) reported that polymorphisms leptin do not influence the composition and quality of milk from 1/2, 3/4 and 7/8 Holstein x Guzera cows kept in a hot climate. Kulig and Kmiec (2009) evaluated that the selection for the A59V CC and CT animals might contribute to enhance in milk yield as well as fat and protein yields in Jersey cattle.…”

“…Previously an association between A1457G and milk yield in British cows have been found (Banos et al, 2008;Clempson et al, 2011). However, there are contradictory reports regarding association of leptin polymorphisms with composition and quality of milk (Ferreira et al, 2019). Despite the studies on polymorphisms of leptin with respect to milk yield, there is no available literature on the relationship of these two genes on the same aspect.…”

Exploring the relationship between polymorphisms of leptin and IGF-1 genes with milk yield in indicine and taurine crossbred cows

“…Other reports showed that C/BspEI/T and C/HphI/T poly-morphisms of leptin gene is associated with milk protein percentage, whereas the C/HphI/T locus of leptin is significantly associated with Solid non fat (SNF) percentage (Singh et al , 2014). Contrary to our findings, Ferreira et al (2019) reported that polymorphisms leptin do not influence the composition and quality of milk from 1/2, 3/4 and 7/8 Holstein x Guzera cows kept in a hot climate.…”