SciELO - Scientific Electronic Library Online

 
vol.30 issue1Nutritional behavior and feeding profile of dairy production in cultivated pastures (Panicum maximum Jacq)Effect of pre-partum supplementation with calcium chloride on the serum concentration of minerals and productive aspects in Carora cows author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

Share


Revista de Investigaciones Veterinarias del Perú

Print version ISSN 1609-9117

Abstract

VIVAR H, Mery; OLAZABAL L, Juan  and  SAN MARTIN H, Felipe. Comparison of blood urea nitrogen level between weaned alpacas and llamas grazing cultivated pastures. Rev. investig. vet. Perú [online]. 2019, vol.30, n.1, pp.193-200. ISSN 1609-9117.  http://dx.doi.org/10.15381/rivep.v30i1.15691.

The aim of this study was to compare the level of blood urea nitrogen (BUN) between weaned alpacas and llamas grazing cultivated pastures. It was used 63 alpacas and 64 llamas, both females and males, maintained for 21 days after weaning on cultivated pastures (association of Italian rye grass [Lolium multiflorum] and white clover [Trifolium repens]). The blood sample was taken on day 21 of the study before animals went for grazing. The chemical composition of the offered feed, BUN and the selectivity index (SI) were evaluated. The BUN determination was done by visible UV spectrophotometry with a commercial kit. The IS was determined between the botanical composition of the pasture and the botanical composition of feed consumed. The data were analyzed through the Student t test of two samples with equal variances. The chemical composition of the cultivated grass offered for dry matter, crude protein, crude fiber, ethereal extract and ash was 18.09, 16.30, 19.20, 1.43 and 6.60%, respectively. BUN values in alpacas and llamas were 19.04 ± 3.24 mg/dl (12.13 -26.36 mg/dl) and 19.05 ± 3.93 mg/dl (8.80 -25.69 mg/dl), respectively, without significant difference between species. The IS was neutral, and no selectivity was found in both species. It is concluded that BUN is similar between weaned alpacas and llamas grazing cultivated pastures and they did not show selectivity for consumption.

Keywords : blood urea nitrogen; cultivated pastures; alpacas; llamas.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License