Comportamento ingestivo de caprinos das raças Moxotó e Canindé em confinamento recebendo dois níveis de energia na dieta

Abstract

RESUMO Ingestive behaviour of Moxoto and Caninde goats fed diets with two energy levels in feedlotABSTRACT -In this work, it was evaluated the ingestive behavior of indigenous goats from the northeastern semiarid region, kept in feedlot. Forty castrated males, 20 from Moxotó and 20 from Caninde breeds, with average initial weight of 15.22 kg ± 1.78 kg, were used. The goats were distributed in a completely randomized design in a 2 × 2 factorial arrangement with two breeds and two diets. Two experimental diets were evaluated: diet with lower energy level (2.2 Mcal ME/kg dry matter (DM)) formulated with 70:30 roughage:concentrate ratio;and another diet with higher energy level, (2.7 Mcal ME/kg DM) and roughage:concentrate ratio of 35:65. For ingestive behavior, observations were carried out at every five minutes for 24 hours to determine time spent on intake, rumination and idle. Dry matter intake, number of ruminated boli and ruminating chews per day, time of ruminating chews per boli, urinary frequency and frequency of search for water and water intake significantly differed among breeds. Moxoto breed animals showed higher urinary frequency and lower frequency for search for water during the day. However, when Moxoto animals received the diet with 2.7 Mcal ME/kg DM, they excreted less urine. Moxoto and Caninde goats are very selective with greater preference for small particles of the diets, regardless to its energy level. Supply of diets with high level of energy improves feed and rumination efficiency of Moxoto and Caninde goats in feedlot.

Water consumption when exposed to sun and shade for native goats in the semiarid of the State of Paraiba, Brazil

“…It was also noted that increased demand for water was made by Moxotó, followed by the Azul goats, and the animals which visited the least the water fountains were the ones from the Graúna breed. This consumption was similar to that found by BARRETO et al (2011) when studying the feeding behavior of native Moxotó and Canindé goats with different diets, but differs from quoted by RIBEIRO et al (2006), who analyzed the feeding behavior of goats fed ad libitum and under restriction, mentioned that the demand for water was higher (1.94 times), for the animals fed ad libitum, and inferior to the present research. ARAÚJO et al (2010) reported that among the factors that affect water consumption are: heat, which promotes more effective in increasing water consumption; dry matter intake , which has a direct relation with the water consumption; mineral supplementation, which increases the demand especially in pregnant and lactating female; and confinement considering that the stabled animals tend to decrease consumption in relation to those in pasture.…”

Selectivity and feeding behavior of Saanen goats subjected to three nutritional levels

“…It might also explain the fact that females had a higher percentage of mineral matter in their orts, because the concentrated feeds and mineral supplement had lower granulometry. Barreto et al (2011) observed that Moxotó and Canindé goats had a preference for the smaller particles in their diets, regardless of energy level, which was similar to what we observed in the present study. This can be explained in diets composed of ingredients that have heterogeneous particle size and physical density, as segregation may occur at mixing due to transportation and the animals turning over the diet in the trough using their muzzles, thus facilitating selective feeding.…”

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“…Goats are animals that are adapted to semiarid regions, where they are grown extensively, but can however have their performance compromised for not having access to food sources during dry periods, and is therefore important when confining these animals, especially during the summer season (Lisboa et al, 2010;Barreto et al, 2011). It was verified during this study that the animals maintained their dietary habits and behaviours similar to those ones raised in the field.…”