Return of postpartum ovarian activity in dairy goats supplemented with different levels of energy

• Autor(a) principal: Nascimento,Thiago Vinicius Costa
• Data de Publicação: 2014
• Outros Autores: Miranda,Mayara de Souza, Barros,Celso Henrique Souza Costa, Souza,Thaís Thatiane dos Santos, Lopes Júnior,Edilson Soares, Voltolini,Tadeu Vinhas, Moraes,Salete Alves de, Nogueira,Daniel Maia, Cordeiro,Mabel Freitas
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Saúde e Produção Animal
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-99402014000400025
• topic: goats; oestrus; uterine involution; postpartum

This study aimed to evaluate the return of post partum ovarian activity in dairy goats supplemented with different levels of energy during the dry period in the semi-arid region of Pernambuco. Twenty-four animals were allocated into four treatments of six animals each: Control, consisting of goats that had access to pasture and only received 4 kg of fresh palm, and three groups with isoproteic supplementation (20% Crude Protein), ranging in TDN content of 65%, 75% and 85%. The daily milk yield showed a linear growth behavior (P <0.05) since day 35th postpartum, when the animals recovered the weight gain and body condition score after 14 and 21 days postpartum, respectively, with slight weight gain in 75% and 85% treatments. Among the reproductive parameters, uterine involution and return to estrus activity showed a decrease in the number of days associated with the higher energy levels (P <0.05). The emergence of the 1st follicles &gt; 2 mm occurred around 33 days postpartum and the maximum diameter of the pre-ovulatory follicle was 5,41mm. These results were not influenced by treatments (P&gt; 0.05). We concluded that the supplementation with different levels of energy promoted a positive effect, as increased productive parameters and reduced the number of days for the reestablishment of the reproductive parameters postpartum; for instance, uterine involution, return to estrus and consequently return of ovarian activity postpartum.