Desempenho produtivo e reprodutivo de cordeiras recebendo suplementação concentrada em comedouro privativo

• Autor(a) principal: Ortiz, Jessé Siqueira
• Data de Publicação: 2013
• Outros Autores: Costa, Ciniro [UNESP], Meirelles, Paulo Roberto de Lima [UNESP], Silva, Marina Gabriela Berchiol da [UNESP], Hadlich, Janaina Conte [UNESP], Cavassano, Francielli Aparecida, Garcia, Cledson Augusto
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.7213/academica.011.003.AO09; http://hdl.handle.net/11449/141022
• topic: Lambs; Creep feeding; Suffolk; Puberty; Borregas; Creep feeding; Suffolk; Puberdade

Ewes with high fertility and prolificacy rates with ability to reduce lamb mortality are sought as matrix replacements in sheep herds. The objective of this study was to evaluate the effect of different levels of concentrate supplementation containing 18% CP and 3.15 Mcal/kg/DM during creep feeding of lambs on their weight and performance at different ages, the onset of puberty and reproductive performance. Thirty-six Suffolk lambswere used, divided into three levels of concentrate intake (1, 2.5 and 4% of body weight). The animals were fed from birth to weaning. Feed was supplied once a day and daily leftovers were recorded. The lambs were identified, weighed at birth, 30 days and 60 days of age, when they were weaned. There was no significant difference in body weight and average daily weight gain at 30 and 60 days of age. The intake levels did not affect the parameters measured. The daily supplementation with 4% concentrate provided better reproductive performance in the first and second year of mating, but did not increase the number of lambs per birth.