{"id":410845,"date":"2021-11-30T10:45:32","date_gmt":"2021-11-30T09:45:32","guid":{"rendered":"https:\/\/phileo-lesaffre.com\/?p=410845"},"modified":"2022-02-09T11:47:45","modified_gmt":"2022-02-09T10:47:45","slug":"selsaf-in-ruminants-dual-protection-dual-benefits","status":"publish","type":"post","link":"https:\/\/phileo-lesaffre.com\/en\/selsaf-in-ruminants-dual-protection-dual-benefits\/","title":{"rendered":"Selsaf\u00ae<\/sup> in ruminants: dual protection & dual benefits"},"content":{"rendered":"

[vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” css=”.vc_custom_1623762190118{padding-bottom: 35px !important;}” z_index=””][vc_column][vc_column_text]\"SelsafDue to global warming, climate change, and constantly rising productivity demands, ruminants are becoming more and more predisposed to oxidative stress. This is where the antioxidant capacity of the body cannot cope with the production of reactive oxygen species (ROS), as it accumulates in the body. Oxidative stress in ruminants leads to immune depression, tissue, and organ damage, and affects the animal\u2019s health and welfare. To prevent oxidative stress, animal diets need to be supplemented with antioxidants, such as vitamin E and Selenium (Se).<\/strong>[\/vc_column_text][vc_row_inner row_type=”row” type=”full_width” text_align=”left” css_animation=””][vc_column_inner][vc_separator type=”transparent”][vc_column_text]<\/p>\n

Oxidative stress: an imbalance of the oxidative system<\/strong><\/h3>\n

 <\/p>\n

Oxidative stress, which is caused by an imbalance between the pro-oxidant and antioxidant systems (Figure 1), can lead to the disruption of physiological processes and, in due course, disease. Reactive oxygen and nitrogen species (RONS) are produced as by-products of normal cell metabolism and are, for example, necessary for cellular signalling or pathogen inactivation. Nevertheless, RONS can be double-edged swords, being powerful oxidants with the ability to interfere with the protein function, DNA, or polyunsaturated fatty acids. Fortunately, the body has developed certain control mechanisms which balance the production of RONS, or neutralise them, while still guaranteeing their biological function. On one hand, antioxidants can exist in non-enzymatic molecules, such as Vit E, Vit C or Glutathione. On the other hand, enzymes with specialised functions are also found, such as superoxide dismutase (SOD), catalase (CAT) or Glutathione peroxidase (GPx).<\/p>\n

 <\/p>\n

GPx is a selenoprotein containing four selenocysteine amino acids in its catalytic cleft. Selenocysteine, which is known today as a 21st amino acid, closely resembles the amino acid cysteine, with the only difference being the substitution of the sulphur atom in cysteine by an Se atom in selenocysteine. While the incorporation of selenocysteine in proteins is strictly regulated, it is necessary for the enzymatic function of the so-called seleno-enzyme. Consequently, because it is needed for the construction of selenocysteine, and thus selenoproteins, Se plays an important role in the control of oxidative stress.[\/vc_column_text][vc_separator type=”transparent”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_single_image image=”410853″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_separator type=”transparent” up=”25″ down=”25″][vc_column_text css=”.vc_custom_1638264608156{border-top-width: 1px !important;border-right-width: 1px !important;border-bottom-width: 1px !important;border-left-width: 1px !important;padding-top: 45px !important;padding-right: 45px !important;padding-bottom: 45px !important;padding-left: 45px !important;background-color: #e7e7e7 !important;border-left-color: #000000 !important;border-left-style: solid !important;border-right-color: #000000 !important;border-right-style: solid !important;border-top-color: #000000 !important;border-top-style: solid !important;border-bottom-color: #000000 !important;border-bottom-style: solid !important;border-radius: 20px !important;}”]What happens during oxidative stress?<\/strong><\/p>\n

    \n
  1. Imbalance between pro-oxidant and antioxidant systems causes oxidative stress.<\/li>\n
  2. Pro-oxidants are produced during normal cell metabolism but are neutralised by antioxidants.<\/li>\n
  3. 3. Antioxidants consist partly of selenoproteins (such as GPx) that need Se to achieve full enzymatic activity and to balance pro-oxidants<\/li>\n<\/ol>\n

    [\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_separator type=”transparent”][vc_column_text]<\/p>\n

    Oxidative stress impacts negatively on animal performance and welfare<\/strong><\/h3>\n

     <\/p>\n

    An animal\u2019s antioxidant system can become imbalanced when there is either a lack of antioxidants in its diet, such a Vit E, insufficient de-novo production of antioxidants due to Se deficiency, or an overproduction of ROS due to different stress factors. The overproduction of ROS in modern dairy and beef farming can be associated with many stress factors, such as calving, overcrowding, heat stress, infectious diseases, transportation, and so on.<\/p>\n

     <\/p>\n

    Se<\/em> deficiency in ruminants causes oxidative stress, which in young calves is manifested by muscular dystrophy (white muscle disease), with typical and recognisable clinical signs. In adult animals, however, Se deficiency and oxidative stress are difficult to diagnose as they are often associated with other typical problems, such as immune depression, leading to a high somatic cell count (SCC) and mastitis, placenta retention, infertility, respiratory diseases, and so on.[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_column_text]<\/p>\n

    Antioxidant status is key for better immunity<\/strong><\/h3>\n

     <\/p>\n

    An activated immune system is a major contributor to oxidative stress as the immune cells, such as neutrophils, are metabolically very active, producing large amounts of ROS. They also use an oxidative burst as a way of destroying pathogenic bacteria. In this context, they are the most sensitive cells to oxidative stress while the immune system is the first to suffer from an excessive accumulation of ROS. Providing sufficient antioxidants helps to neutralise ROS and balance the immune response (Figure 2).[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410865″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]<\/p>\n

    Increasing antioxidant defence through Selsaf\u00ae<\/sup> supplementation in ruminants<\/strong><\/h3>\n

     <\/p>\n

    Supplementing Se in the ruminant diet is critical for the avoidance of oxidative stress. Se is only absorbed in the small intestine and its solubility is important. However, ruminants absorb mineral Se very poorly as rumen microbes reduce it to a non-soluble form that cannot be absorbed but is excreted into the environment. In comparison to monogastric animals, which are able to absorb mineral Se at levels of up to 80%, a ruminant animal\u2019s absorption of mineral Se is only 39% (Meschy et. al., 2010).[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_column_text]Hence, Selsaf\u00ae<\/sup> is a unique source of highly digestible and bioavailable organic Se, providing best absorption through active transport in the intestines. Selsaf\u00ae<\/sup> also provides two major sources of organic Se: selenomethionine, comprising 70% of the Se in Selsaf\u00ae<\/sup>, and selenocysteine, comprising 30% with other seleno-active compounds (Figure 3). It is important to know that the active form of Se is the selenocysteine which is used in the main antioxidant enzyme \u2013 glutathione peroxidase. Selenomethionine is stored in the body proteins (muscles, meat, milk) and can be used later under high stress conditions. In this context, Selsaf\u00ae<\/sup> is unique in that it provides sufficient Se, as Se-cysteine, for immediate use in the antioxidant system and as Se-methionine, to be kept in reserve.[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410869″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]Comparative trials between Selsaf\u00ae<\/sup> and mineral Se (sodium selenite) in dairy cows show significantly increased antioxidant activity in the serum, increased Se content in milk and colostrum, and improved immune function, as observed by a significant reduction of SCC in the milk (Figures 4, 5, 6, & 7).[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410874″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410878″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410882″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410886″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]In receiving beef calves for fattening, Selsaf\u00ae<\/sup> demonstrates superiority over sodium selenite where the higher antiradical capacity of the blood was observed, along with higher antibody titers after vaccination. This study not only shows the efficacy of Selsaf\u00ae<\/sup> as a unique source of highly bioavailable Se but also the importance of antioxidant capacity to achieve a better immune function (Figures 8 & 9).[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410890″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410894″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]Se is also associated with meat quality, with meat antioxidant capacity being related to meat tenderness, appearance, and shelf life. Supplementing Selsaf\u00ae<\/sup> to beef cattle during the final two months of their finishing period significantly improves meat quality and shelf life in comparison to meat from cattle given sodium selenite (Figure 10 & 11<\/strong>).[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410898″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410902″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column width=”1\/2″][vc_column_text]Meat pH is positively associated with meat processing properties, appearance, and shelf life. High pH reduces visual appearance and shelf life. Often these meats after processed, such as during minced beef production, which reduces their value (Figure 12).[\/vc_column_text][vc_separator type=”transparent”][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”410906″ img_size=”full” onclick=”link_image” qode_css_animation=””][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]<\/p>\n

    Conclusion<\/strong><\/h3>\n

    Selsaf\u00ae<\/sup> supplementation is shown to be efficient in reducing the negative impact of oxidative stress in animals by improving their antioxidant defence and homeostasis. Hence, Selsaf\u00ae<\/sup> supplementation improves both animal performance and welfare.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern” z_index=”” css=”.vc_custom_1598509169065{padding-bottom: 35px !important;}”][vc_column][vc_separator type=”transparent” up=”15″ down=”15″][vc_column_text]<\/p>\n

    Authors<\/strong>: Valentin Nenov<\/strong>, DVM, Global Ruminant Manager, Phileo by Lesaffre & Ruth Raspoet<\/strong>, PhD, R&D Program Manager, Phileo by Lesaffre.<\/p>\n

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    Ruminants are becoming more and more predisposed to oxidative stress. To prevent it, animal diets need to be supplemented…<\/p>\n","protected":false},"author":1,"featured_media":411174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,11,40],"tags":[],"class_list":["post-410845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-beef","category-dairy","category-selsaf"],"yoast_head":"\nSelsaf\u00ae in ruminants: dual protection & dual benefits • Phileo by Lesaffre<\/title>\n<meta name=\"description\" content=\"Ruminants are becoming more and more predisposed to oxidative stress. To prevent it, animal diets need to be supplemented with antioxidants, such as vitamin E and Selenium (Se).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/phileo-lesaffre.com\/en\/selsaf-in-ruminants-dual-protection-dual-benefits\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Selsaf\u00ae in ruminants: dual protection & dual benefits\" \/>\n<meta property=\"og:description\" content=\"Ruminants are becoming more and more predisposed to oxidative stress. 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