Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Ciencia Animal

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The study aimed to evaluate the effect of dietary crude protein (CP) on blood urea nitrogen (BUN) in alpacas and sheep. Four male alpacas (53 ± 5 kg) and four male sheep (24 ± 4 kg) were used in an experimental design of overchange with a 4x4 Latin square arrangement (4 animals, 4 periods and 4 treatments). The diets contained 7, 10, 13 and 16% CP and were made from alfalfa meal, oat straw and a commercial supplement of minerals and vitamins. Feed was offered ad libitum. Each period had an adaptation stage (10 d) and an evaluation stage (4 d) and the animals were in individual pens. A linear regression was performed between the levels of N in the diet (independent variable) and the levels of BUN (dependent variable) for each species, comparing the intercept and the slope between both by means of t-Student. In both species, BUN increased with the level of CP in the diet (p<0.05). Alp...

There are few studies describing the eating habits of non-human primates (NHPs) that provide information related to the use of food resources of the ecosystem in the Amazon Forest. The objectives of the study were (1) to determine the composition of the diet of six species of NHPs and (2) to evaluate the amplitude and diversity of their diets from the evaluation of the gastric contents of animals hunted for subsistence purposes by inhabitants of three areas of the northern Peruvian Amazon between 2012-2015. Samples of 82 primates of the species Lagothrix poeppigii (n = 30), Sapajus macrocephalus (n = 23), Pithecia monachus (n = 11), Cacajao calvus (n = 8), Cebus albifrons (n = 6) and Alouatta seniculus (n = 4). The NHPs diet consisted of a high variety of fruits, including 133 types of seeds and 39 types of arthropods. The amplitude of the niche according to the Levin Index and the Simps...