Digestibilidade do cálcio de ingredientes para suínos, avaliada por meio de dois métodos

Abstract

 RESUMODeterminaram-se os coeficientes de digestibilidade aparente e verdadeira do cálcio (Ca) de ingredientes para suínos por meio de dois métodos. Foram utilizados 60 suínos machos castrados, alojados em gaiolas de metabolismo e distribuídos em delineamento experimental inteiramente ao acaso, em arranjo fatorial 2 x 10 (métodos x tratamentos) e seis repetições por tratamento. Os tratamentos consistiram em oito alimentos, uma ração basal (0,072% de Ca total) e uma ração com baixo teor de Ca (0,018%). Os coeficientes de digestibilidade aparente e verdadeira do Ca foram avaliados utilizando-se simultaneamente dois métodos: coleta total de fezes e coleta de fezes com indicador fecal (cinza ácida insolúvel  CAI). 84.80 and 87.33%; Limestone 2, 84.19% and 86.32; Dicalcium Phosphate, 79.36 and 84.55%; Monodicalcium Phosphate, 83.83 and 85.81%, Dolomitic Limestone, 87.39% and 85.65; Meat and Bone Meal (40% CP), 70.00 and 68,64%; Meat and Bone Meal (50% CP), 66.92% and 68.03; Poultry by Product Meal, 73.40 and 73.95%, Calcium Lactate, 95.10

Digestibility of calcium and digestible calcium from inorganic sources evaluated in swine by two methods

“…Salguero Cruz et al (2014), working with diets containing 0.37% of total calcium, found no difference between calcium sources nor interference of fecal collection methods in the calcium digestibility.…”

“…However, the content of AIA in grains is low and the amount supplied in the diets is not enough to act as an indicator. Thus, eventually, external sources of AIA (Celite ™, sand and silica) can be added to diets to improve the accuracy of estimates, being also considered as external indicator, as assessed by Salguero Cruz et al (2014), Rocha Junior et al (2015 and Santana et al (2017). Carvalho et al (2013) compared different methods of analysis of acidinsoluble ash with the total collection method to the determination of metabolizable energy of corn to birds.…”

“…The true digestible calcium values of the sources (Table 7) were calculated from the true digestibility coefficients estimated in this study for castrated pigs in the growth phase. Salguero Cruz et al (2014) calculated the values of digestible calcium for growing pigs and reported 31.58% for calcitic limestone. This value is a very similar data to that obtained in present study, which is 31.31%.…”

Effects of Dietary Calcium Lactate Supplementation on Laying Performance, Blood Index, Shinbone Quality, Jejunal Immunity, and Egg Quality of Aged Laying Hens

“…The decline in eggshell quality is one of the biggest challenges in feeding old laying hens and causes large economic losses in egg production and processing. As a kind of organic calcium, calcium lactate showed a higher true digestibility coefficient of calcium than limestone, calcium phosphate, bone meal, and egg powder in pigs [23]. Lactic acid and calcium lactate are safe to add to animal feed [21], and the production cost of feed-grade calcium lactate is gradually reduced and widely used.…”

Differences in intestinal and renal Ca and P uptake in three different breeds of growing-finishing pigs

“…The ATTD of Ca and P is calculated by the difference between mineral intake and fecal excretion, while the available minerals for bone formation can be evaluated by other methods, such as bone mineralization (Salguero et al. 2014 ). In the present study, Ca and P contents of the femur, tibia, and rib of TYB pigs were lower compared to Duroc pigs at 80 D. Mineralization in the femur and rib showed a response to the Ca and P contents of pigs at the beginning of the growing-finishing stage.…”