Tobyas Maia de Albuquerque Mariz

Relação materno-filial da raça Morada Nova recebendo dietas com três níveis de energia, ao final da gestação

The present work was carried out with the objective to evaluate the effects of different energy levels offered in the final third of gestation on the ewe-lambs behavior of animals from the Morada Nova breed. The experiment was divided into three treatments - three groups of eight ewes, fed isoprotein diets containing different energy levels (2.0, 2.4, and 2.8 Mcal ME/kg DM), with eight replicates each. There was effect of the treatment on the maternal behavior evaluated variables (vocalization, act of smell and lick the lambs and the position of the ewe - stand up or lying), in the ewes, but no difference was observed for the filial behavior (position of animal, time from the birth to the first time that the animal was up, time from the birth to the first sucking and total time sucking) of the lambs. The mobilization of reserves or the direct carrying of nutrients of the diet for normal fetal growth, in the groups fed with diets containing 2.0 and 2.4 Mcal ME/kg DM, minimized the possible effects on the filial behavior of lambs. The mobilization of reserves or direct carry of nutrients of the diet for normal fetal growth, in the groups fed with diets containing 2.0 and 2.4 Mcal ME/kg DM, minimized the possible effect on the filial behavior of lambs. Despite the interference in their relationship with the kids, ewes Morada Nova attained to keep the conditions of the lambs unchanged in all treatments.

Efeitos dos Níveis de Energia no Período Gestacional Sobre o Crescimento de Cordeiros Morada Nova

A viabilidade e o desenvolvimento pos-natal dos cordeiros sao diretamente influenciados pelo nivel de energia ofertado a ovelha no pre-parto. Com este trabalho objetivou-se avaliar a influencia do aporte energetico da dieta de ovelhas Morada Nova, no terco final da gestacao, sobre o desenvolvimento dos cordeiros na fase materno-dependente. O experimento foi conduzido na Estacao Experimental da UFPB, no municipio de Sao Joao do Cariri, Paraiba, tendo tres tratamentos com diferentes niveis energeticos no terco final da gestacao (2,2; 2,8 e 3,4 Mcal de EM/dia) com oito repeticoes cada. O desenvolvimento ponderal, na fase em estudo, nao apresentou variacao significativa (P>0,05) entre os niveis de energia ofertados, podendo-se atribuir tal comportamento a capacidade de mobilizacao de reservas corporais pelas ovelhas com menor oferta de energia ou mesmo devido ao carreamento de nutrientes da dieta para crescimento fetal, com reflexos no desenvolvimento pos-natal.