Browsing by Author "Zuin Jarro, Jenny Fernanda"

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    Addition of clinoptilolite in the diet reduces uterine PMN leukocytes and open days in multiparous lactating dairy cows managed in a mountain tropical pasture‑based system
    (2022) Garzón Prado, Juan Pablo; Quito Largo, Fernando Xavier; Calle Ortiz, Guido Rigoberto; Sinchi Merchán, Franklin Israel; Zuin Jarro, Jenny Fernanda; López Crespo, Gonzalo Estuardo; Galarza Lucero, Diego Andrés; Perea Ganchou, Fernando Pedro
    This study aimed to assess the effect of adding clinoptilolite in the diet on uterine health and reproductive performance in multiparous lactating dairy cows managed in a tropical pasture -based system above 2500 m of altitude. Seventy-seven multiparous Holstein crossbred cows from two farms were allocated randomly into two groups: clinoptilolite supplemented cows (CLG, n = 42) and non-supplemented cows as control (CG, n = 35). Cows from CLG were supplemented with clinoptilolite from 30 days (50 g/cow/day) before to 60 days after calving (200 g/cow/day). In CLG cows, percentages of uterine PMN leukocytes (P < 0.0001) and proportion of subclinical endometritis (P = 0.0187) were lower than in CG. The interval calving to first corpus luteum was shorter (P = 0.0759) in CLG than CG, and calving to first service interval was similar between treatments. Cows from CLG became pregnant 35 days earlier than CG cows (P = 0.0224). On farm A, calving to conception interval was 18.1 days longer in CLG than in CG (P = 0.3750); in farm B, this interval was 86.2 days shorter in CLG than in CG (P = 0.0002). In conclusion, daily addition of clinoptilolite in the diet decreased the percentage of uterine PMN leukocytes, the proportion of cows with subclinical endometritis, and shortened the calving-conception interval in multiparous lactating dairy cows.
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    Efectos de la suplementación de zeolita en la salud e involución uterina y el retorno de la ciclicidad ovárica postparto en vacas lecheras del cantón Cuenca-Ecuador
    (2020-01-03) Sinchi Merchán, Franklin Israel; Zuin Jarro, Jenny Fernanda; Rodríguez Saldaña, Diego Fernando
    The clinoptilolite in the bovine diet acts as an antioxidant and alkalizing substance at the ruminal level, studies show that it works as an abductor of aflatoxins and helps strengthen the immune system indirectly. The objective of this study was to evaluate the action of zeolite in dairy cows in the postpartum period, and its effect on endometrial polymorphonuclear, calving-first service interval, calving-conception interval, ovarian cyclicity, uterine involution and accumulated production. A total of 60 mestizo cows (Holstein-friesian), multiparous, body condition between 2.5 - 3.5, clinically healthy; the diet offered was based in pastures more balaced; through randomized distribution two groups of 30 animals each were formed: control (GC) and treatment (GZ); GZ, consumed 50 and 200 g of zeolite, used from 15 to 60 days before and after delivery, respectively; were evaluated, at 34 to 47 days postpartum with endometrial cytology; In addition, the uterine involution (UI), ovarian cyclic reboot (OCR), interval calving first service (ICFS), calving-conception interval (CCI) and cumulative production (CP) at 100 days were assessed. The percentage of polymorphonuclear was lower (P <0.0001) in the GZ (2.89%). Meanwhile, the UI, OCR, ICFS, CCI and CP did not vary (P> 0.05) between treatments. In conclusion, the inclusion of zeolite in the bovine diet improved uterine health. Therefore, it can be adopted as a nutritional management strategy.