Influencia de la condición corporal y la bioestimulación sobre la eficiencia reproductiva en vacas de raza Simmental en agostadero
作者： Javier Colín N. , Dennis M. Hallford , Mario A. Madrigal A.
关键词:
摘要: EN ESTE EXPERIMENTO SE EVALUO EL EFECTO DE LA CONDICION CORPORAL AL PARTO Y BIOESTIMULACION CON TOROS, SOBRE EFICIENCIA REPRODUCTIVA MEDIANTE DURACION DEL ANESTRO POSPARTO TASA PRENEZ SINCRONIZAR ESTROS. UTILIZARON 73 VACAS RAZA SIMMENTAL, MANEJADAS AGOSTADERO. LOS TRATAMIENTOS ASIGNARON BAJO UN DISENO COMPLETAMENTE AZAR, ARREGLO FACTORIAL 2 ' 2, COVARIANZA. FACTORES FUERON: ALTA O BAJA (CCA CCB), SIN TOROS (CT ST). (T) T1, CCA-CT; T2, CCA-ST; T3, CCB-CT; T4, CCB-ST. ANALIZO PROGESTERONA (P4) SUERO SANGUINEO POR TECNICA RIA, PARA DETERMINAR INICIO ACTIVIDAD CICLICA. PALPARON OVARIOS DETECTAR PRIMER CUERPO LUTEO (CL). CICLICA A LAS SEMANAS SEIS, OCHO, 11 15 (P 5.5) BIOESTIMULADAS INMEDIATAMENTE DESPUES PARTO. MEJORO SERVICIO (IA) 44% EMPADRE 60 DIAS 40%.
academica.mx参考文章(11)
P L Houghton, R P Lemenager, L A Horstman, K S Hendrix, G E Moss, Effects of body composition, pre- and postpartum energy level and early weaning on reproductive performance of beef cows and preweaning calf gain. Journal of Animal Science. ,vol. 68, pp. 1438- 1446 ,(1990) , 10.2527/1990.6851438X
K. K. Schillo, Effects of dietary energy on control of luteinizing hormone secretion in cattle and sheep Journal of Animal Science. ,vol. 70, pp. 1271- 1282 ,(1992) , 10.2527/1992.7041271X
T. T. Stumpf, M. W. Wolfe, P. L. Wolfe, M. L. Day, R. J. Kittok, J. E. Kinder, Weight changes prepartum and presence of bulls postpartum interact to affect duration of postpartum anestrus in cows. Journal of Animal Science. ,vol. 70, pp. 3133- 3137 ,(1992) , 10.2527/1992.70103133X
M. W. Richards, J. C. Spitzer, M. B. Warner, Effect of Varying Levels of Postpartum Nutrition and Body Condition at Calving on Subsequent Reproductive Performance in Beef Cattle Journal of Animal Science. ,vol. 62, pp. 300- 306 ,(1986) , 10.2527/JAS1986.622300X
D G Morrison, J C Spitzer, J L Perkins, Influence of prepartum body condition score change on reproduction in multiparous beef cows calving in moderate body condition Journal of Animal Science. ,vol. 77, pp. 1048- 1054 ,(1999) , 10.2527/1999.7751048X
Milo C. Wiltbank, Cell types and hormonal mechanisms associated with mid-cycle corpus luteum function. Journal of Animal Science. ,vol. 72, pp. 1873- 1883 ,(1994) , 10.2527/1994.7271873X
R.H. Alberio, G. Schiersmann, N. Carou, J. Mestre, Effect of a teaser bull on ovarian and behavioural activity of suckling beef cows Animal Reproduction Science. ,vol. 14, pp. 263- 272 ,(1987) , 10.1016/0378-4320(87)90016-9
L. F. Laflamme, M. L. Connor, Effect of postpartum nutrition and cow body condition at parturition on subsequent performance of beef cattle Canadian Journal of Animal Science. ,vol. 72, pp. 843- 851 ,(1992) , 10.4141/CJAS92-096
I. A. Wright, S. M. Rhind, T. K. Whyte, A note on the effects of pattern of food intake and body condition on the duration of the post-partum anoestrous period and LH profiles in beef cows Animal Science. ,vol. 54, pp. 143- 146 ,(1992) , 10.1017/S0003356100020663
P. J. Dziuk, P. J. Dziuk, R. A. Bellows, R. A. Bellows, Management of Reproduction of Beef Cattle, Sheep and Pigs Journal of Animal Science. ,vol. 57, pp. 355- 379 ,(1983) , 10.2527/ANIMALSCI1983.57SUPPLEMENT_2355X