Effect of feeding sweet‐potato condensed distillers solubles on intake and urinary excretion of minerals in Japanese Black steers

Abstract

Four Japanese Black steers (16 months of age) were assigned to a 4 × 4 Latin square design to investigate the effect of graded levels of sweet-potato condensed distillers solubles (SCDS) in their diets on intake and urinary excretion of minerals. The four diets consisted of 0%, 10%, 20% and 30% (dry matter (DM) basis) SCDS, with SCDS replacing commercial concentrate (CC). Intake of K, Cl, S, P and Mg increased linearly with increasing SCDS content. Urinary pH increased linearly with increasing dietary SCDS content. SCDS feeding increased urinary K concentrations (linear and quadratic effects). Urinary concentrations of Cl increased linearly with increasing SCDS content. In contrast, urinary concentrations of Mg decreased with increasing SCDS content. Feeding of SCDS did not apparently affect urinary NH ,P, Na or Ca concentrations. These results suggest that high SCDS feeding is not a risk for crystallization of minerals leading to the formation of magnesium-phosphate type calculi: although SCDS contains large amounts of P and Mg, high SCDS feeding decreased the Mg concentration and did not affect the P concentration in urine. Additionally, high SCDS feeding had no apparent effects on plasma concentrations of Na, K, Cl, Ca or inorganic P.

Bladder calculi and cystitis in Hanwoo steers without clinical symptoms: a case report

“…This result is similar to a previous report that silica, magnesium ammonium phosphate, calcium carbonate and calcium oxalate are the most common types of crystals found in ruminants (Makhdoomi and Gazi 2013). This is also consistent with a previous report that calculi of the magnesium-phosphate type are commonly found in ruminant urolithiasis (Miranda et al 2010;Kamiya et al 2016). Miranda et al (2010) reported that magnesium ammonium phosphate or calcium phosphate calculi often develop particularly in feedlots with fattened cattle that receive rations with high contents of cereal grains, oil meals, an excess of phosphorus and magnesium and relatively low levels of calcium and potassium.…”

“…Urinary calculi in beef cattle have long been regarded as an economic burden in the livestock industry (Kamiya et al 2016). The risk factors for urinary calculi in cattle are diverse and complex; they can occur due to early castration, a highly concentrated diet, a high-phosphorous diet or improper calcium-phosphorous balance in feed rations, vitamin A deficiency, excessive oestrogen, hypervitaminosis D, reduced water intake and pastures containing silica or oxalate (Connell et al 1959;Divers and Peek 2008;Pan et al 2011;Kamiya et al 2016). Hanwoo, a cattle breed native to Korea, has been raised to produce highly marbled beef to improve the income of farmers as well as meet consumer demand.…”

Can neutral dietary cation–anion difference (DCAD) decrease occurrence of clinical periparturient hypocalcaemia in dairy cattle?

“…The DCAD was defined as the strong ion difference in milliequivalents. We used the most commonly used 4‐element equation:…”

Effect of different levels of Ipomoea batatas flour inclusion on the ruminal pH of sheep in metabolic cages

“…Studies show that the use of sweet potato by-product in livestock diet is a promising reality, with great potential for application and positive effects as to weight gain, and organic matter consumption and digestibility (Megersa, Urge, & Nurfeta, 2013;Phesatcha & Wanapat, 2013;Beckford & Bartlett, 2015;Mangwe, Rangubhet, Mlambo, Yu, & Chiang, 2016;Dang et al, 2017;Li, Ji, Wang, Qin, Hou, & Shen, 2017;Kamiya et al, 2017), but few studies have assessed the effect of using sweet potato on ruminal pH; what has been proposed is the transformation of a residue, which is not commercialized, into flour or bran, in order to compose a balanced diet. Therefore, the objective of this study is to assess the ruminal pH of sheep supplemented with different levels of sweet potato byproduct.…”