Santana Ana Lúcia Almeida, de Oliveira Carvalho Paulo Levi, Cristofori Eliseu Carlos, da Silva Chambo Poliana Caroline, Barbizan Mariana, Nunes Ricardo Vianna, Gregory Cristine Regina, Genova Jansller Luiz
Universidade Federal da Bahia, Ondina Campus, Salvador, BA, 40170-110, Brazil.
Universidade Estadual do Oeste do Paraná, Campus of Marechal Cândido Rondon, Marechal Cândido Rondon, PR, 85960-000, Brazil.
Trop Anim Health Prod. 2018 Mar;50(3):477-484. doi: 10.1007/s11250-017-1456-8. Epub 2017 Nov 7.
The aim of this study was to evaluate the effect of supplementation of pig diets in the growth and termination phases with different calcium sources. In experiment I, 36 whole males were distributed in randomized blocks in six groups, with six replications. A basal diet was formulated to meet the animals' nutritional requirements except for calcium (0.09%), and the sources evaluated (calcitic limestone, monodicalcium phosphate, calcinated bone flour, and oyster flour) replaced the basal diet to provide 0.59% of total calcium. To determine the endogenous calcium, a diet containing low calcium (0.019%) was given simultaneously to another group of animals. Feces and urine were collected for determination the coefficients of apparent and true digestibility. In experiment II, 160 piglets were distributed in randomized blocks in four treatments, with five replications and four animals per experimental unit. Carcass and performance parameters, calcium concentration in bone and serum, and bone parameters were evaluated. The data were submitted to analysis of variance and factorial. The calcium source did not influence the digestibility coefficients determined by total collection (P > 0.05). The digestibility of Ca from oyster flour estimated by collection with an indicator was higher than that from the other sources (P < 0.05). Calcium sources did not interfere in the evaluated parameters (P > 0.05). The sources studied in this work can be used to supplement growing pigs' diets.
本研究的目的是评估在生长和育肥阶段用不同钙源补充猪日粮的效果。在实验I中，36头雄性仔猪被随机分组到6个组中，每组6个重复。配制了一种基础日粮，以满足动物除钙（0.09%）外的营养需求，所评估的钙源（石灰石粉、磷酸二氢钙、煅烧骨粉和牡蛎粉）替代基础日粮以提供0.59%的总钙。为了测定内源钙，同时给另一组动物饲喂低钙（0.019%）日粮。收集粪便和尿液以测定表观消化率和真消化率系数。在实验II中，160头仔猪被随机分组到4种处理中，每个实验单元5个重复，每个重复4头动物。评估了胴体和生产性能参数、骨骼和血清中的钙浓度以及骨骼参数。数据进行方差分析和析因分析。钙源对通过全收粪法测定的消化率系数没有影响（P>0.05）。用指示剂法收集评估得出，牡蛎粉中钙的消化率高于其他来源（P<0.05）。钙源对所评估的参数没有干扰（P>0.05）。本研究中所研究的钙源可用于补充生长猪的日粮。
