Effects of supplementary desalted mother liquor as replacement of commercial salt in diet for Thai native cattle on digestibility, energy and nitrogen balance, and rumen conditions

Abstract

Four Thai native cattle were used in a 4 × 4 Latin square design experiment to evaluate the availability of desalted mother liquor (DML) as replacement of salt in concentrate. Each cattle was assigned to one of the following concentrate feeding treatments: C1, 1% NaCl was added as salt; C2, 2% NaCl was added as salt; D1, 1% NaCl was replaced by DML; D2, 2% NaCl was replaced by DML, on a dry matter (DM) basis. The animals were fed rice straw and experimental concentrates (40:60) at 1.9% of body weight on a DM basis, daily. Acid detergent fiber expressed exclusive of residual ash (ADFom) digestibility in DML treatment was higher than salt treatment (p < .05) and D2 feeding showed the highest value (60.8%). There were no significant differences in blood metabolites, nitrogen retention, ruminal ammonia nitrogen, methane emission or energy efficiency among treatments. Molar percent of acetate on volatile fatty acids in rumen fluid 4 hr post-feeding tended to be higher in DML treatment than salt treatment (p = .08). The results indicated that adding DML could improve ADFom digestibility and salt could be replaced by DML up to 2% as NaCl in concentrate without adverse effects on nitrogen balance, rumen conditions, blood metabolites and methane emission.

New challenges for efficient usage of Sargassum fusiforme for ruminant production

“…With regard to salinity, certain in vivo results have showed that cows that consume 0.82 kg of salt daily do not exhibit altered cellulose digestibility and gross energy efficiency compared to those in animals that ate the same diet without salt 17 . In addition, another study 18 also reported that salt has no detrimental effects on nitrogen balance, rumen fermentation, methane emissions, and energy efficiency. Due attention must be given to the heavy metal concentrations of S. fusiforme, as heavy metal accumulation in ruminants would have adverse effects on health.…”

Effects of feeding mother liquor, by‐product of monosodium glutamate, on digestibility, energy and nitrogen balances, and rumen condition in Thai native bulls

“…The previous study (Sato et al, 2018) suggested that desalted mother liquor (DML) increased ADFom digestibility in Thai native bulls. In the present study, however, the ML did not have the effect.…”

“…Respiration trial was conducted according to the procedure described by Sato et al (2018). Expiratory gas was collected using a ventilated hood calorimetry system as described by Suzuki et al (2008).…”

“…The concentrate feeds and rice straw were fed separately at a ratio of 60:40 on a DM basis. The concentrate-toroughage ratio was determined according to the feeding method of fattening cattle in the center and the experiments conducted by Sakai et al (2017) and Sato et al (2018). Rice straw was chopped into 10 cm lengths on an average.…”