<b>Feeding behavior of dairy cows fed different levels of xiquexique (<i>Pilosocereus gounellei</i>)

Abstract

ABSTRACT. This study evaluated the replacement of Tifton hay with xiquexique (0, 12, 24 and 36%) on feeding behavior of lactating dairy cows. To this end, eight cows with average milk production of 15 kg milk day -1 and average body weight of 465.2 ± 39.4 kg were distributed in a double 4x4 Latin square. Each experimental period lasted 16 days, ten for adaptation and six for data collection. The record of behavioral variables was made every five min. for 24 hours. The times spent in feeding, ruminating and total chewing, expressed in hours day -1 , as well as feeding (FE) and rumination (RE) efficiencies, expressed in g NDF h -1 , the number of cuds and cud chews per day showed a linear decrease according to the levels of xiquexique in the diet. There was a linear increase in time in idleness. Xiquexique levels in the diet for dairy cows did not influence FE and RE, expressed in g DM h -1 , number and time spent in chewing per cud. The replacement of Tifton hay with xiquexique in the diet alters the feeding behavior of dairy cows due to the reduction in fiber content.Keywords: cactaceous, fiber, chewing, resting, Pilosocereus gounellei, rumination. Comportamento ingestivo de vacas em lactação alimentadas com diferentes níveis de xiquexique (Pilosocereus gounellei)RESUMO. Este trabalho foi realizado para avaliar a substituição do feno de capim-tifton por xiquexique (0, 12, 24 e 36%) sobre o comportamento ingestivo de vacas leiteiras em lactação. Foram utilizadas oito vacas com produção média de 15 kg de leite dia -1 e com peso corporal médio de 465,2 ± 39,4 kg, distribuídas em quadrado latino 4x4, duplo. Cada período experimental teve duração de 16 dias, sendo dez para adaptação e seis para coleta de dados. O registro das variáveis comportamentais foi realizado a intervalos de 5 min. durante 24h. Os tempos de alimentação, ruminação e mastigação total, expressos em hora dia -1 , além da eficiência de alimentação (EAL) e de ruminação (ERU) expressas em g FDN h -1 , o número de bolos ruminais e de mastigação merícicas por dia, diminuíram linearmente com os níveis de xiquexique nas rações experimentais. Houve aumento linear no tempo em ócio. Os níveis de xiquexique na ração de vacas leiteiras não influenciaram a EAL e ruminação ERU expressas em g MS h -1, número e tempo de mastigação merícica por bolo. A substituição do feno de capim-tifton por xiquexique na ração modifica o comportamento ingestivo de vacas em lactação em decorrência da redução dos teores de fibra.

Feeding behavior of sheep in feedlot and fed with diets containing detoxified castor cake in substitution to the soybean meal

“…Water intake was influenced (p < 0.05) only by the periods of the day (Table 4), with predominance in the hours from 8h00 to 11h00 am and 14h00 to 17h00, the same periods where the feed was supplied. Periods where feed supply occurs represent a higher peak frequency of water intake due to the stimulus to feed consumption (Furtado, Carneiro, Pereira, Moreira Filho, & Silva, 2016), being still associated with higher ambient temperatures at these times that increase the rate of water consumption (Berchielli, Pires, & Oliveira, 2011). For food metabolism, water is initially necessary in the chewing and swallowing process, as well as for digestion processes, which require homogenization and translocation of digesta and fluids within the gastrointestinal lumen (Barreto et al, 2011).…”

Urea and Tannin in multiple supplements: Ingestive behavior of grazing beef cattle

“…Several plants contain secondary compounds that protect them from fungi, bacteria, herbivores and insects attacks. Saponins and tannins present in some tropical plants may act in this process (Furtado, Carneiro, Pereira, Moreira Filho, & Silva, 2016), when supplied at high levels, these compounds may have adverse effects on the ruminal microbial population and animal health, while at low levels it presents potential to improve ruminal fermentation (Santos, 2018).…”