EFEITO DO NÍVEL DE SALINIDADE DA ÁGUA SOBRE CONSUMO E A DISGESTIBILIDADE DE CAPRINOS CANINDÉ

Abstract

The objective of the present study was to evaluate the effect of water salinity level on food consumption and digestibility in Canindé goats. The experiment was conducted in a climatic chamber at 26 °C (thermoneutral zone) in the Setor de Bovinocultura de Leite do Centro de Ciências Agrárias da Universidade Federal da Paraíba, Campus II, Areia-PB, from September 15 to October 19, 2017. A total of 18 Canindé animals were used, whole males with a mean age of five months and a body weight of approximately (20 ± 2.3 kg). The animals were housed in metabolic cages placed inside the climatic chamber, provided with feeders and drinking fountains. All animals were weighed initially vaccinated and dewormed against ecto and endoparasites. The animals received the complete hay, soybean meal, corn bran meal and mineral supplement, being the same common for all treatments, offered twice a day at 08:00 and 16:00 hours, estimated by the amount of food ingested to establish 10% of leftovers. Consumption was quantified by the total provided minus the leftovers in the 24 hour period. The water with the salinity levels: 1dS m-1, 6dS m-1 and 12dS m-1 was supplied once a day, the consumption being quantified according to the daily total provided (7L) minus leftovers in the 24 hours. The dry matter intake and other nutrients were calculated by means of the quantity of ingredients offered, minus the ingredients contained in the leftovers, the samples were collected during the five days of the experimental period. The analisys were realized at Laboratório de Avaliação de Alimentos e Nutrição Animais (LAANA), localizado no Centro de Ciências Agrárias – CCA, Areia – PB. Treatments composed of different salinity levels did not present significant differences in DMI with a mean of 663, 637 and 655g / day. For the DMI (% BW) it had the lowest value 2.6 at the salinity level 12dS m-1 (P> 0.05). For nutrient digestibility, no significant effect was found for DMD, OMD, CPD, EED and DNFD. Considering the three levels of salinity (1dS m-1, 6dS m-1 e 12dS m-1), it was verified that these do not influence the nutrient intake as well as the digestibility of food for Canindé goats.