Effect of organic sources of minerals on fat-corrected milk yield of dairy cows in confinement

Abstract

-This study evaluated the effects of organic and inorganic sources of minerals in diets for mid-lactation dairy cows on milk yield and composition, intake and total apparent digestibility of dry matter and nutrients, blood parameters, microbial protein synthesis, and energy and protein balances. Twenty Holstein cows averaging 146.83±67.34 days in milk and weighing 625.30±80.37 kg were used. The experimental design was a crossover. Diets were composed of corn silage (50%), ground grain corn, and soybean meal, differing with regard to the sources of trace minerals, plus an organic and inorganic mix. The organic mineral source increased milk fat and fat-corrected milk yield without changing milk yield, intake, or total apparent digestibility. Blood parameters, microbial protein synthesis, and energy and protein balances were not affected by the sources of minerals. Organic sources of minerals improve milk fat yield without affecting other parameters.

Top-dressing of chelated phytogenic feed additives in the diet of lactating Friesian cows to enhance feed utilization and lactational performance

“…Wadhwa et al (2016) reported that feeding chelated minerals increased microbial protein synthesis compared with inorganic minerals. del Valle et al (2015) observed unaffected apparent nutrient digestibility with minerals supplementation.…”

Effect of Mixed Mineral-Enriched Essential Oils Supplementation on Milk Production and Feed Efficiency of Lactating Dairy Cows

“…In this study, lactating dairy cows have supplemented a commercial mixed mineral-enriched essential oils (Agromix Booster®). Numerous macro-micro minerals and essential oils (spices and herbs) have been utilized to enhance animal growth and production (Braun et al, 2019;del Valle et al, 2015;Elcoso et al, 2019;Roshanzamir et al, 2020;Suksombat et al, 2017). In response to this feed additive, AGB supplementation did not affect DMI (Table 2).…”

Effect of feeding chelate complexes of trace elements on the average daily balance of Cu, Zn and Mn in the organism of cows during the period of lacta-tion

“…Останнім часом в годівлі великої рогатої худоби широко використовуються хелатні комплекси мікроелементів за рахунок їх високої біодоступності, що викликає безсумнівний науковий і практичний інтерес (Cortinhas et al, 2012;Del Valle et al, 2015;Harlamov et al, 2013;Toporova et al, 2016). Однак, проблема нормування кількості введення хелатів до раціону тварин остаточно не вирішена і потребує уточнення.…”