Extracted and Characterized Humic Substances as Feed Supplement in Rabbit Feeding: Effects on Performance, Blood Metabolites and Caecal Fermentation Activity

Hafsa, Salma H. Abu; Hassan, A. A.; Sabek, Ahmed; Elghandour, Mona M.Y.; Barbabosa‐Pliego, Alberto; Alqaisi, Othman; Salem, Abdelfattah Z.M.

doi:10.1007/s12649-021-01392-3

Cited by 5 publications

(8 citation statements)

References 32 publications

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“…Using a rumen stimulation technique and in HS-added goat and dairy cows, linear reductions in ruminal ammonia concentration have been reported [34,98,134]. In addition, in HS-added rabbits, the concentration of ceca ammonia decreased sharply in a dose response manner [33]. The lower ruminal or ceca ammonia concentrations may be linked with the effectiveness of HS to reduce ammonia accumulation and also to their strong nitrogen-binding properties of HS.…”

Section: Ammonia Emissionsmentioning

confidence: 96%

“…The protective effect of HS on the digestive epithelium has been associated with increases in villus height, crypt depth, and epithelial surface area in mice [17], chickens [24-26], Japanese quails [27], and rabbits [28], and increased activity of digestive enzymes in the digestive mucosa of chickens [26,29] and freshwater fish [30], and also to increased energy and protein digestibility in chickens [31,32], organic matter, protein, and fiber in rabbits [28,33] and protein in milking cows [34]. In addition, an increased weight of the gizzard and length of the duodenum and jejunum has been reported in chickens fed canola-based diets and added with HS [35], as well as the size and weight of the cecum of rabbits [28].…”

Section: Formation Of Protective Layers In the Digestive Mucosamentioning

confidence: 99%

“…In growing HS-added rabbits, the total bacteria and E. coli counts in cecum were decreased [28]. Also in HS-added rabbits, increased concentrations of propionic and butyric acids were found [33].…”

Section: Digestive Microbiotamentioning

confidence: 99%

“…These results agree with the higher protein efficiency ratio [128], breast and thigh meat and total protein content [62,102,129], and higher carcass and breast yield [35,91,102] recently found in HS-added broilers. The addition of HS has also caused increases in protein retention and digestibility in broiler chickens [31,32] and protein digestibility rabbits [28,33] and milking cows [34]. In laying hens, HS linearly increased serum total protein, albumin, and globulin [130].…”

Section: Proteinsmentioning

confidence: 99%

“…In HS-added rabbits, a significant decrease in the concentrations of urea and increase in total blood protein, albumen, and globulin levels have been observed [33,131].…”

Section: Proteinsmentioning

confidence: 99%

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Mechanisms of Action of Humic Substances as Growth Promoters in Animals

Angeles¹,

Gómez-Rosales²,

Téllez–Isaías³

2022

Humus and Humic Substances - Recent Advances

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A review of the latest research on the addition of humic substances (HSs) in the drinking water or feed of farm animals including poultry, pigs, dairy cows and calves, goats, and rabbits was carried out. The results reinforces the promoted protective action of HS on the digestive mucosa, their antioxidant properties, immunomodulatory, and anti-inflammatory attributes, the suggested microbial shift to a probiotic-type bacteria in the gut, including antiparasitic and antifungal effects, as well as their influence on the higher efficient of minerals, proteins, and lipids utilization within the body. The outstanding improvements in health, productivity, and meat and milk quality obtained from animals supplemented with HS are common features in the majority of available research. The main benefits in the gastrointestinal tract stem from the formation of protective barriers on the epithelial mucosa due to its colloidal properties and stimulation of mucin production. HS also promotes the development of probiotic microbiota and positive changes in bacterial fermentation patterns, which results in improved intestinal health and integrity. As a result, a cascade of benefits is derived within the body, reinforcing antioxidant protection responses, immunomodulation, and anti-inflammation mechanisms, as well as improving nutrient utilization efficiency. However, the truly molecular mechanisms of action of HS in the intestine and throughout the body remain unknown.

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Section: Ammonia Emissionsmentioning

confidence: 96%

Section: Formation Of Protective Layers In the Digestive Mucosamentioning

confidence: 99%

Section: Digestive Microbiotamentioning

confidence: 99%

Section: Proteinsmentioning

confidence: 99%

“…In HS-added rabbits, a significant decrease in the concentrations of urea and increase in total blood protein, albumen, and globulin levels have been observed [33,131].…”

Section: Proteinsmentioning

confidence: 99%

See 3 more Smart Citations

Mechanisms of Action of Humic Substances as Growth Promoters in Animals

Angeles¹,

Gómez-Rosales²,

Téllez–Isaías³

2022

Humus and Humic Substances - Recent Advances

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show abstract

Converting the Waste of Orange Fleshed Sweet Potato Biomass to Improve Performance Characteristics and Vitamin Profile of Broiler Chickens

Oladeji

Akinbola

Faniyi

et al. 2022

Waste Biomass Valor

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Assessment of the inclusion of a feed additive of sodium humate derived from freshwater sapropel in diets for broiler chickens

Proskina,

Barzdina,

Valdovska

et al. 2023

Vet World

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Background and Aim: Poultry production is the fastest growing livestock industry in the world, as the rapid growth of and efficient absorption of feed by poultry ensure the production of poultry meat with a relatively low carbon footprint. Seeking new ways to increase livestock productivity as well as poultry product quality, the number of research studies on the use of humic substances of various origins in livestock farming has increased significantly, emphasizing the role of feed additives derived from local resources. The unique capability of humic substances to improve metabolic processes allows the immune protection of the bird body to be strengthened and production efficiency to be increased. This study aimed to identify the effects of sodium humate (NaHum) on the growth performance of broiler chickens and selected blood and ileum microbiota parameters. Materials and Methods: Dietary research was conducted 2 times under production conditions in a poultry facility of a commercial company, with 210 1-day-old, unsorted broiler chickens of both sexes (Ross 308). The broiler chickens were fed with standard commercial feed, the rearing period of 35 days, and slaughtered on day 36. Sodium humate additive was added to drinking water for the research groups of broilers in period from 8th to 35th day of life, 25 mL (Group 1, n = 2 × 35) and 50 mL (Group 2, n = 2 × 35) per liter of drinking water. Sodium humate contained an average of 4.48% dry matter, a kilogram of dry matter containing 104.3 g of crude protein, 3.6 g of crude fiber and 0.9 g of crude fat, 14.3 MJ of metabolic energy, and 5.8 MJ of energy for live weight gain, as well as a very high content of crude ash −759.8 g, including 4.2 g Ca, 4.2 g Na, and 4.81 g Fe, the dry matter digestibility of NaHum was 87.0%, and the absorption capacity of dry matter was 113.2%., the pH level was 13.0, i.e., alkaline. At the end of the dietary research, the productivity and economic efficiency of the research groups of broilers were calculated by live weight gain, carcass weight, feed conversation ratio, and blood and intestinal samples of broilers were analyzed to identify the effects of NaHum on the growth performance and health status of broilers. Results: Dietary research found that adding 25 mL/L and 50 mL/L of NaHum to drinking water for the broiler chickens increased their live weights at the selling age, average live weight gains by 3.06–3.93%, and carcass weights by 5.07–6.06%, while feed conversion increased in terms of both live weight (1.5 and 1.51) and carcass weight (1.84 and 1.86) compared with the control group. The best economic performance in terms of the economic efficiency index and the cost index (CI) was found in Group 1, which was fed with the NaHum additive at an intake rate of 25 mL/L. The NaHum additive modulated the ileal microbiota and metabolic processes in the broiler body. At the same time, a significant decrease in the levels of total protein, alkaline phosphatase and phosphorus (P) in blood was found in the research groups. Conclusion: Considering the positive effects of NaHum derived from freshwater sapropel on the productivity and economic efficiency of broiler chickens, the NaHum feed additive should be further investigated on a larger scale to obtain results that could reasonably be used in practice. This study concluded that a decrease in P levels in the blood was observed when NaHum was added to the drinking water; therefore, it is important to continue the research to draw reasonable conclusions on the effects of NaHum in liquid form on the health performance of farm animals. Keywords: broilers, carcas yield, growth performance, ileum microbiota, sapropel, sodium humate.

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Extracted and Characterized Humic Substances as Feed Supplement in Rabbit Feeding: Effects on Performance, Blood Metabolites and Caecal Fermentation Activity

Cited by 5 publications

References 32 publications

Mechanisms of Action of Humic Substances as Growth Promoters in Animals

Mechanisms of Action of Humic Substances as Growth Promoters in Animals

Converting the Waste of Orange Fleshed Sweet Potato Biomass to Improve Performance Characteristics and Vitamin Profile of Broiler Chickens

Assessment of the inclusion of a feed additive of sodium humate derived from freshwater sapropel in diets for broiler chickens

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