Effects of body condition score and flushing on the reproductive performance of adult ewes during anoestrous or breeding season: a meta-analysis | Meta-análisis sobre el efecto de la condición corporal y el flushing en la fertilidad y prolificidad de varias razas ovinas en diferentes épocas de cubrición
2009
Díez, B., Instituto Vasco de Investigación y Desarrollo Agrario, Vitoria (España) | Ruiz, R., Instituto Vasco de Investigación y Desarrollo Agrario, Vitoria (España) | Villalba, D., Universitat de Lleida (España). Escola Técnica Superior d'Enginyeria Agrària | Beltrán de Heredia, I., Instituto Vasco de Investigación y Desarrollo Agrario, Vitoria (España)
A meta-analysis was conducted to evaluate the effects of body condition score (BCS) or flushing on the fertility and prolificacy of adult ewes in anoestrous or breeding season. Inclusion criteria for the publications were comparison of two groups of different BCS (<2.5 and >/=2.5) and comparison of one group receiving flushing during 3-6 weeks and other maintaining the initial status. Fifteen papers were selected and 5484 data from 16 different breeds analysed. Eight meta-analyses were done (2 seasons x 2 nutrition effects x 2 reproductive parameters). Both nutritional strategies had an overall significant effect on fertility during anoestrous and on prolificacy during breeding season.
Показать больше [+] Меньше [-]