Feeding differing direct-fed microbials and its influence on growth and haematological parameters of growing lambs1

Antwi, Christopher; Mensa, Patience A; Arthur, Fareed K. N.; Frimpong, Yaw Oppong; Baah, J.

doi:10.1093/tas/txz053

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…Usually, these additives have been used in pre-weaning ruminants and monogastric animals. However, Antwi et al (2019) reported that DFMs improve the immune system by increasing the phagocytic activity of microorganisms, as a result of increasing macrophages, and thus increasing the number of neutrophils. The increase in the number of granulocytes, such as eosinophils, has been attributed to the improvement of the immune system (Prieto et al, 2014).…”

Section: Blood Metabolitesmentioning

confidence: 99%

Evaluating the effects of direct‐fed microbial supplementation on the performance, milk quality and fatty acid of mid‐lactating dairy cows

Asil,

Mohammadabadi,

Chaji

et al. 2023

Veterinary Medicine & Sci

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BackgroundThe objective of the experiment was to investigate the effect of a mixture of direct‐fed microbial (DFM) on feed intake, nutrient digestibility, milk yield and composition, milk fatty acid and blood parameter in crossbred mid‐lactating cows.MethodsTwenty‐four crossbred Holstein cows (body weight = 650±15 kg; days in milk = 100±20; daily milk yield = 25±3 kg) were used in a completely randomized design with three treatments: (1) CON, without DFM; (2) LS, inoculation with Lactobacillus fermentum (4.5 × 108 CFU/day) plus Saccharomyces cerevisiae (1.4×1010 CFU/day); and (3) LSM, inoculation with LS plus Megasphaera elsdenii (4.5 × 108 CFU/day). All animals received the same ration with 45.7% forage and 54.3% concentrate.ResultsResults showed that the highest feed intake was observed in treatments LS and LSM (p = 0.02). Compared with the CON, milk production, 4% fat‐corrected milk, energy‐corrected milk, fat (kg/day), protein (kg/day) and lactose (kg/day), FE and percent of fat were increased (p<0.05) by LSM, but unaffected by LS. Also, compared with the CON, both LS and LSM increased antioxidant activity (p<0.05). The concentration of C18:2c n‐6 increased significantly in treatment LSM compared with the CON (p = 0.003). The concentration of C20:0 increased significantly in treatment LS compared with the CON (p = 0.004). The highest concentrations of insulin, glucose, triglyceride and cholesterol were observed by LSM (p<0.05). Compared with the CON, both LS and LSM increased blood monocyte, neutrophil, eosinophil and basophil (p<0.05), and blood lymphocyte was increased (p = 0.02) only by LSM.ConclusionsThe results of the research showed that the use of DFMs had no effect on the digestibility, microbial load and the major part of fatty acids in milk. However, it improved feed intake, milk yield and antioxidant activity of milk and also increased the milk concentration of C18:2 n‐6.

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Section: Blood Metabolitesmentioning

confidence: 99%

Evaluating the effects of direct‐fed microbial supplementation on the performance, milk quality and fatty acid of mid‐lactating dairy cows

Asil,

Mohammadabadi,

Chaji

et al. 2023

Veterinary Medicine & Sci

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Response of large white gilts to diets containing differing probiotic products

et al. 2021

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Implication and challenges of direct-fed microbial supplementation to improve ruminant production and health

Ban

Guan

2021

J Animal Sci Biotechnol

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Direct-fed microbials (DFMs) are feed additives containing live naturally existing microbes that can benefit animals’ health and production performance. Due to the banned or strictly limited prophylactic and growth promoting usage of antibiotics, DFMs have been considered as one of antimicrobial alternatives in livestock industry. Microorganisms used as DFMs for ruminants usually consist of bacteria including lactic acid producing bacteria, lactic acid utilizing bacteria and other bacterial groups, and fungi containing Saccharomyces and Aspergillus. To date, the available DFMs for ruminants have been largely based on their effects on improving the feed efficiency and ruminant productivity through enhancing the rumen function such as stabilizing ruminal pH, promoting ruminal fermentation and feed digestion. Recent research has shown emerging evidence that the DFMs may improve performance and health in young ruminants, however, these positive outcomes were not consistent among studies and the modes of action have not been clearly defined. This review summarizes the DFM studies conducted in ruminants in the last decade, aiming to provide the new knowledge on DFM supplementation strategies for various ruminant production stages, and to identify what are the potential barriers and challenges for current ruminant industry to adopt the DFMs. Overall literature research indicates that DFMs have the potential to mitigate ruminal acidosis, improve immune response and gut health, increase productivity (growth and milk production), and reduce methane emissions or fecal shedding of pathogens. More research is needed to explore the mode of action of specific DFMs in the gut of ruminants, and the optimal supplementation strategies to promote the development and efficiency of DFM products for ruminants.

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Feeding differing direct-fed microbials and its influence on growth and haematological parameters of growing lambs1

Cited by 5 publications

References 29 publications

Evaluating the effects of direct‐fed microbial supplementation on the performance, milk quality and fatty acid of mid‐lactating dairy cows

Evaluating the effects of direct‐fed microbial supplementation on the performance, milk quality and fatty acid of mid‐lactating dairy cows

Response of large white gilts to diets containing differing probiotic products

Implication and challenges of direct-fed microbial supplementation to improve ruminant production and health

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