title: The effect of flushing and stimulus of estrogenized does on reproductive performance of anovulatory-range goats.
abstract: This study was conducted to determine whether flushing or the stimulus of estrogenized goats is necessary to achieve a high reproductive response in anestrous goats on rangeland. Does were feed-supplemented on rangeland (flushed, n = 20). Other group was exposed to estrogenized does during the mating period (stimulated, n = 20). A third group was both supplemented and stimulated (stimulated-flushed, n = 20) and other group grazed on rangeland only (control, n = 18). More goats in the stimulated and stimulated-flushed groups showed estrus during the first 5 days of joining (45% and 60%, respectively) than the control and flushed groups (11% and 5%, respectively; P < 0.05). Flushing did not improve prolificacy and reduced (P < 0.05) kidding rates (40% and 35% for the flushed and stimulated-flushed groups, respectively) compared to 67% and 55% for the control and stimulated groups, respectively. This experiment demonstrates potential shortcomings of use of flushing in range goats with inadequate nutrition during gestation.
authors.affiliation: Autonomous Agrarian University Antonio Narro, Periférico Raúl López Sánchez y Carretera a Santa Fe, C.P 27054 Torreón, Mexico.
authors.forename: María Angeles
authors.initials: MA
authors.lastname: De Santiago-Miramontes
authors.forename: Juan Ramon
authors.initials: JR
authors.lastname: Luna-Orozco
authors.forename: Cesar A
authors.initials: CA
authors.lastname: Meza-Herrera
authors.forename: Raymundo
authors.initials: R
authors.lastname: Rivas-Muñoz
authors.forename: Evaristo
authors.initials: E
authors.lastname: Carrillo
authors.forename: Francisco Gerardo
authors.initials: FG
authors.lastname: Véliz-Deras
authors.forename: Miguel
authors.initials: M
authors.lastname: Mellado
mesh_terms: D000780:Anestrus; D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D019587:Dietary Supplements; D004958:Estradiol / Q000031:analogs & derivatives / Q000494:pharmacology; D004973:Estrus Synchronization; D005260:Female; D006041:Goats / Q000502:physiology*; D007273:Injections, Intramuscular / Q000662:veterinary; D008297:Male; D008800:Mexico; D011374:Progesterone / Q000494:pharmacology; D012098:Reproduction; D012726:Sexual Behavior, Animal; D013997:Time Factors
chemical_list: D011374:Progesterone; D004958:Estradiol; C007630:estradiol 17 beta-cypionate