Effects of letrozole administration on growth and reproductive performance in Markhoz

[basskiller]

Effects of letrozole administration on growth and reproductive performance in Markhoz goat bucklings.

Theriogenology. 2019 Nov 18;:

Authors: Rezaei A, Vaziry A, Farshad A, Farzinpour A, Rostamzadeh J


Abstract
This study evaluated the growth performance, testicular and semen characteristics, and hormonal profile of Markhoz (Iranian Angora) bucklings injected with letrozole (LTZ). Twenty-eight 4-4.5 month old bucks were randomly assigned into four groups and received either 0.25.mg/kg body weight (BW) LTZ subcutaneously (sc LTZ) or intramuscularly (im LTZ), and also sc (sc CONT) or im (im CONT) controls every week for 3 months. The study was performed at the beginning of the breeding season in Sanandaj Animal Husbandry Research Station (46.99 °E, 35.31 °N). The results showed that LTZ causes increased final body weight (25.78.±.1.61.kg), higher average daily gain (104.±.0.03.g/days), and decreased feed conversion ratio (7.81.±.2.57) (P.