Supplementing a -based direct-fed microbial improves feed efficiency in lactating dairy cows.

This experiment was conducted to evaluate the effects of feeding a -based direct-fed microbial () on performance and nutrient digestibility of lactating dairy cows. Seventy-six lactating (42 ± 6 days in milk []) Holstein-Friesian primiparous and multiparous cows were enrolled to a 16-wk experiment. Cows were blocked by lactation number and DIM and within blocks, assigned to 1 of the 2 treatments: 1) basal partial-mixed ration () without DFM addition ( = 38; ) or 2) basal PMR with the addition of 3 g/head/d of a DFM containing 809 and 810 ( = 38; BOVACILLUS, Chr.

Effects of supplementing direct-fed microbials on health and growth of preweaning Gyr × Holstein dairy calves.

This study aimed to evaluate the effects of direct-fed microbials (DFM) on health and growth responses of preweaning Bos indicus × Bos taurus (Gyr × Holstein) crossbred calves. Ninety newborn heifer calves (initial BW of 35 ± 4.0 kg) were used.

Effects of supplementing a -based direct-fed microbial on performance, nutrient digestibility, rumen fermentation characteristics, and metabolic responses of lactating dairy cows.

This experiment was conducted to evaluate the effects of feeding a -based direct-fed microbial (DFM) on performance, nutrient digestibility, rumen fermentation, and metabolic response of lactating dairy cows. Sixty-eight lactating (50 ± 6 d in milk) Holstein-Friesian (n = 20) and Swedish Red (n = 48) cows were enrolled to a 15-wk experiment. Cows were blocked by breed, lactation number, and days in milk and, within blocks, assigned to 1 of the 2 treatments: (1) basal partial mixed ration (PMR) without DFM (n = 34; CON) or (2) basal PMR with the addition of 3 g/head per day of a DFM containing and (n = 34; DFM).

Evaluation of a -based direct-fed microbial probiotic on in vitro rumen gas production and nutrient digestibility of different feedstuffs and total mixed rations.

We evaluated the effects of a -based direct-fed microbial () on total in vitro gas production, dry matter (), neutral detergent fiber (), and starch disappearance of different feedstuffs and total mixed rations () in three different experiments. In experiment 1, six single fiber-based feedstuffs were evaluated: alfalfa hay, buffalo grass, beet pulp, eragrostis hay, oat hay, and smutsvinger grass. Experimental treatments were control (with no probiotic inoculation; ) or incubation of a probiotic mixture containing and (3.