Simple Summary This study compared two active dry yeast products in 100 lactating Holstein cows over ten weeks. Cows received a basal diet without yeast, conventional active dry yeast (RF7) at 5 g/cow/day, or Actisaf Sc48 at 5 or 10 g/cow/day. Compared with the control and conventional yeast groups, cows receiving Actisaf Sc48 at 10 g/cow/day had higher milk yield and apparent crude protein digestibility. Milk lactose content was higher with Actisaf Sc48 at 10 g/cow/day than with conventional yeast, but did not differ significantly from the control. Both Actisaf Sc48 groups had higher concentrations of total volatile fatty acids and acetate in the rumen than the control and conventional yeast groups. Feed intake differed among treatments, and these differences varied over time.
The objective of this study was to evaluate the effects of feeding graded levels of hybrid rye silage (HRS) as a replacement for barley silage (BARS) on DMI, milk yield and composition, ruminal fermentation characteristics, omasal nutrient flow, total-tract nutrient digestibility, and nitrogen (N) utilization in dairy...
Bianca P. Rusawo, G. Penner, T. Mutsvangwa· Journal of Dairy Science· 0 citations
This study investigated the effects of increasing dietary crude protein (CP) levels on milk yield, nutrient utilization, nitrogen use efficiency, rumen fermentation, and lamb growth in lactating Barki ewes. Twenty-one multiparous ewes (mean body weight (BW) of 40.5 ± 0.41 kg), each nursing one lamb (mean BW: 6.22 ± 0.1...
Ibrahim M. Khattab, A. Abdel-Wahed, A. Aboamer et al.· Journal of animal physiology...· 0 citations
Optimizing carbohydrate and protein fractions in transition dairy cow diets is critical for maintaining rumen function, health, and productivity. Although rations should be rich in starch and undegraded protein for high-yielding cows, this study examined the effects of reducing dietary starch and rumen-undegradable pro...
Cangir Uyarlar, Ayşe Özcan, I. Bayram· Ankara Üniversitesi Veterine...· 0 citations
We aimed to evaluate the effects of phytogenic supplementation at different dietary protein concentrations in lactating dairy cattle diets. We hypothesized that phytogenic supplementation with a blend of several plant-based ingredients providing saponins, encapsulated cinnamaldehyde, curcumin, capsaicin, and piperine w...
N. Alfaro-Diaz, M. Siregar, A. Osorio et al.· Journal of Dairy Science· 0 citations
This study aimed to investigate the metabolic responses of supplementing the diet with condensed tannins and live yeast on fattening performance and some rumen and blood parameters in beef cattle.In the study, 32 male beef cattle of cross breeds with an average live weight of 521.68 ± 17.84 kg at 15-mo-old were used....
Ozge Bulut, M. Basalan· Journal of Animal Science· 0 citations
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