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- W2808250651 abstract "Se evaluaron los efectos de la adicion de acidos grasos poliinsaturados (AGPI) sobre los cambios en el comportamiento reproductivo y productivo en 28 vacas mestizas Carora multiparas, seleccionadas al azar y agrupadas en tres tratamientos (T): TI (n=14): pastos cultivados+4 kg/d de mezcla alimenticia de harina de sorgo (55%), harina de soya (25%) y melaza (25%) mas 75 g de mineral. TII (n=7): TI+0,3 kg de grasa sobrepasante (GS), durante los ultimos 20 d preparto y 60 d postparto (dpp) y TIII (n=7): TI+0,3 kg de GS, durante los primeros 60 dpp. Se evaluo: peso corporal (PC), condicion corporal (CC), ciclicidad ovarica (CO), dimension de los ovarios (DO), numero de foliculos por clase folicular: FOLI, II, III, cuerpos luteos (CL), concentracion sanguinea de progesterona (P4), dias vacios (DV), prenez (P), produccion total de leche vendible (PTL), y grasa de la leche (% GL). Los datos fueron analizados mediante ANOVA, medidas repetidas en el tiempo, analisis de supervivencia (AS), MANOVA, pruebas de t y de Chi cuadrado (χ²). No hubo diferencias (p>0,05) en CC y PC, ni en AS para CO entre tratamientos. A los 15 dpp hubo diferencias para FOLIII entre TII y TI, FOLII entre TII y TIII (p≤0,01) y FOLIII entre TII y TIII (p 0.05) in BCS and BW, and SA for OC between T. On 15 dpp there were differences for FOLIII between TII and TI; FOLII between TII and TIII (p≤0.01 ); and FOLIII between TII and TIII (p<0.05). CL were different (p<0.05) on 15 and 45 dpp. On day 45 pp, FOLII were different (p<0.05) between TI, TII and TIII (16.0, 18.1 and 7.7, respectively); likewise, for FOL-II among T. OD was different (p <0.05) on 30 dpp in the left ovary (LO) for TII. Follicular classes and CL were different (p <0.05) in LO during the first 60 dpp. P4 was higher (p<0.05) in TII during 45 dpp (4.12 ng/mL±1.60) vs. TI (1.42 ng/mL±0.58) and TIII (0.85 ng/mL±0.46). DO decreased (P<0.01) in TII (70.43±10.8 d); TIII (88.4±14.90d) vs. TI (148.7±100,71d). BCS at calving affected TMP (p<0.05). The TMP in TIII, exceeded in 10.5% and 15.2% that of TII and TI, respectively (p<0.05). %MF was different (p<0.05) in TII, at 30 dpp. The inclusion of PUFAs positively influenced OC for FOLII, FOLIII, CL, and left ovary dimensions, favoring TMP, contrary to TI. Inclusion of PUFASs turned out to be beneficial to improve reproductive and/or productive indicators." @default.
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- W2808250651 date "2017-12-01" @default.
- W2808250651 modified "2023-10-18" @default.
- W2808250651 title "Efecto de la Adición de Ácidos Grasos Poliinsaturados sobre el Comportamiento Reproductivo y Productivo en Vacas Mestizas Carora en Los Llanos Centrales de Venezuela" @default.
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