Palma forrageira e silagem de restos de cultura do abacaxi : consumo, digestibilidade e comportamento ingestivo de ovinos

Abstract

The effect of replacing the silage of cultural remains pineapple with spineless cactus was evaluated, in addition to a control treatment with sorghum silage as exclusive roughage, in a sheep diet on intake and the apparent digestibility of nutrients, ingestive behavior and water intake. The experiment was conducted at the Universiade Federal Rural de Pernambuco, in Recife – PE, from January to April 2020.Five male crossbred sheep were used, with an average body weight of 43 kg, were distributed in a 5 x 5 Latin square. The treatments consisted of four levels of replacement of silage of cultural remains pineapple by spineless cactus (0, 30, 60 and 90%) and a control treatment consisting of sorghum silage. The intakes of dry matter (DM), organic matter (OM) and total digestible nutrients (TDN), were higher with the exception of the last level of replacement (90%) compared to the control treatment (P<0.05). Neutral detergent fiber (NDF) intake decreased linearly, from 436.5 to 220.5 g/day, while NFC intake was higher (368.8 vs 94.26 g/day) for the treatment with 90% replacement compared to the control treatment, respectively. Sorghum silage showed lower apparent digestibility of DM, OM, NFC when compared to any of the replacement levels. On the other hand, there was no difference between (P>0.05) the control treatment when compared to the different replacement levels (0 to 90%) for CP and NDF digestibility. The time spent on feeding was similar between the control treatment and the different levels of substitution. Rumination times were shorter and the amount spent with idleness was higher for levels 30, 60 and 90% when compared to the control treatment. The silage of cultural remains pineapple presented better nutritive value than the sorghum silage. It is not recommended to replace the silage of cultural remains pineapple with forage cactus.