masterThesis
Evaluación de la involución, salud uterina y retorno de la actividad ovárica con la adición de zeolita 2% en la dieta basal de vacas lecheras
Fecha
2016Autor
Garzón Prado, Juan Pablo
Institución
Resumen
The objective of this research was to evaluate the effect of zeolite (clinoptilolite) added in the basal diet of dairy cows for 105 days, 60 days pre-partum (dap) and 45 days post-partum (dpp), and it’s influence on return of ovarian activity (AO), involution (IU ) and uterine health (SU), and body condition (CC). The project was conducted in three herds in the community of Soldados of the Cuenca - Azuay in fifty dry cows, with CC ≥ 3.5, between 2-5 births, clinically healthy and all in the same health and management conditions; were divided into a control group (n1 = 25), fed with basal diet and experimental (n2 = 25), with basal diet + 2% Zeolite of dry matter intake (DMI). Return of AO was evaluated considering follicles ≥ 10 mm of diameter at 15, 22, 35 and 45 dpp by transrectal ultrasonography, SU (> 10 PMN) at 35 dpp for cytobrush, IU considering position of the uterus relative to the pelvis (PU), symmetry of the horns (SCU) and diameter of the cervix (DC) at 22 and 45 dpp by rectal palpation, and finally CC to 15 dap, at calving and 45 dpp. The experimental design was completely random (DCA) and the results were analyzed with SPSS version 22.0, they were subsequently applied statisticians "Mann Whitney and Kruscall Wallis". I have obtained effectiveness in GE the highest percentage of cows returning their AO (GC and GE respectively were: 35 dpp vs.70,4% 29.6%; 44.4% vs. 45 dpp 55.6%; p <0.05). The IU was at 45 dpp, the values obtained for GC and GE were respectively 40.0% vs. PU 76.0%, 32.0% vs. SCU 76.0% and 28.0% vs. DC 68.0% (p <0.05). And YOUR also showed effectiveness in getting GE vs. 3.4% 22.2% of PMN compared to GC, (p <0.05). Finally, significant differences (p <0.05) was found in DC childbirth and 45 dpp effectively attributed to GE. In conclusion, the addition of zeolite 2% in the basal diet showed efficacy in involution and uterine health, return of ovarian activity and body condition in cows in transition, recommending its use in dairy herds