scholarly journals Preliminary study on exploration of seaweed for an alternative to antibiotic growth promoter in poultry feed additives.

2021 ◽  
Author(s):  
Ipsheta Bose ◽  
T. Sujatha ◽  
Rahul Singh ◽  
Jai Sunder ◽  
Gayatri Samaddar
Keyword(s):  
Animal Feed ◽  
Positive Influence ◽  
Feed Additives ◽  
Biologically Active ◽  
Poultry Feed ◽  
Feed Additive ◽  
Growth Promoter ◽  
Waste Biomass ◽  
Negative Effects ◽  
Renewable Biomass

Abstract Seaweed (known as the marine algae) has a tradition of being part of the animal feed in the coastal areas, from ancient times. Seaweed, are mixed with animal feed, because when consumed alone can have some negative effects on the animal. Seaweed are very rich in useful metabolite (pigments, carotenoids, phlorotannin, polyunsaturated fatty acids, agar, alginate and carrageenan) and minerals (iodine, zinc sodium calcium, magnesium, iron, selenium), being considered as a natural source of additives that can substitute the antibiotic usage in various animals. Inclusion of naturally available material in poultry feed additive can have a positive influence on the poultry performance and enrich the quality of their by product. As an easily available and renewable biomass rich in biologically active compounds, seaweeds can meet this demand. Different forms of seaweed powder from naturally occurring biomass, cultivated or waste biomass, extracted compounds, post extraction residues or liquid extracts may be used in poultry feeding. This study describes the nutritional values of seaweeds and their effects in poultry feed additive, and to what extent their unique properties can serve as an alternative to antibody growth promoter.

scholarly journals The productivity and mass of internalss of quails are for actions feed addition of «Proenzym»

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
N. M. Baluh
Keyword(s):  
Live Weight ◽  
Maximum Amount ◽  
Feed Additives ◽  
Biologically Active ◽  
Poultry Feed ◽  
Feed Additive ◽  
Internal Organs ◽  
Basic Diet ◽  
Experimental Group ◽  
Different Doses

Established that the largest distribution combined with feed additives which include a number of biologically active substances. As an alternative to antibiotics, the use of which recently banned their production and significantly reduced feeding system is used four groups of drugs, enzymes, probiotics, prebiotics and аcidifiers. The largest number of feed additives used in poultry feed. Therefore, to improve the consumption and use of feed efficiency, obtaining maximum animal performance ensured a high level of balanced nutrition using the same enzyme–probiotic supplements. It is to include such feed additives «Proenzym» which consists of live bacteria genus Bacillus subtilis and an enzyme tsellyulaza. What prevents gastrointestinal diseases, improves digestion and absorption of essential nutrients intake. Therefore, the aim was to study the effect of feeding different doses feed additive «Proenzym» in the quail Full–feed and its impact on productivity and internal organs. For the experiment selected 200 day old Estonian quail breed. Of these, the principle of analogues formed four groups of 50 goals each. The duration of the experiment – 56 days. The first (control) group during the entire experiment received a basic diet, and quail research groups in addition to the basic diet fed different doses of feed additives. For the effects of various doses feed additive had a positive effect on live weight quails in 42 and 49–day age. Yes, most live weight at the end of the experiment were females and males second experimental group 10.8% and 8.3%, which in addition to full–feed introduced minimum dose «Proenzym» The introduction of the new maximum amount of feed factor had a significant impact on the weight of internal organs, quails second group for the actions of study drug increased the mass of the lungs and liver, respectively, 0.6 g and 3.4 g, and gallbladder in 4 experimental group 0.16 g. Therefore, we can conclude that the diets of quails best was the maximum amount of feed additive.

scholarly journals Seaweeds, Intact and Processed, as a Valuable Component of Poultry Feeds

2020 ◽  
Vol 8 (8) ◽  
pp. 620
Author(s):  
Izabela Michalak ◽  
Khalid Mahrose
Keyword(s):  
Feed Additives ◽  
Production Performance ◽  
Biologically Active ◽  
Poultry Production ◽  
Waste Biomass ◽  
Growth Promoters ◽  
Active Compounds ◽  
Renewable Biomass ◽  
Poultry Nutrition ◽  
Poultry Feeding

Poultry production is an important area of the agricultural economy. Nowadays, there is an interest in novel sources of feed additives that will improve production performance and poultry health. As an easily available and renewable biomass rich in biologically active compounds, seaweeds can meet this demand. Different forms of seaweeds–seaweed powder from naturally occurring biomass, cultivated or waste biomass, extracted compounds, post-extraction residues or liquid extracts–may be used in poultry feeding. Inclusion of this unconventional material in the poultry nutrition can positively influence the poultry performance along with its health and enrich poultry products with active compounds, such as micro- and macroelements, polyunsaturated fatty acids and pigments. Seaweeds also reduce lipids and cholesterol in eggs. Moreover, due to their unique properties, they can serve as an alternative to antibiotic growth promoters. This review presents the latest developments in the use of seaweeds in poultry nutrition, as well as its limitations.

scholarly journals Peluang Imbuhan Pakan Herbal-Probiotik Komersial “Promix®” Sebagai Pengganti Antibiotic Growth Promoter (AGP) pada Ayam Pedaging yang Diberi Vaksin ND

2019 ◽  
Vol 37 (2) ◽  
pp. 180
Author(s):  
Agnesia Endang Tri H. Wahyuni ◽  
Vinsa Cantya Prakasita ◽  
Thomas Emanuel Manggotu Nahak ◽  
Agustina Viktoria Tae ◽  
Jeffi Chandra ◽  
...  
Keyword(s):  
Weight Gain ◽  
Animal Feed ◽  
Feed Additives ◽  
Feed Additive ◽  
Growth Promoter ◽  
Not Given ◽  
Commercial Feed ◽  
Significant Difference ◽  
Group A ◽  
Group B

With the prohibition of the use of Antibiotic growth promotors (AGP) used in animal feed, especially in broilers, the use of feed additives such as herbs, probiotics, prebiotics, synbiotics or mixtures of some of these ingredients is currently widely used as feed replacements for AGP substitutes. One of the commercial feed additives that contain combinations herbal and probiotics is Promix®. In broiler maintenance, one vaccine that must be given is Newcastle Disease (ND) vaccine. The purpose of this study was to determine the role of supplementation of commercial feed combination of herbs and probiotics in broilers given ND vaccines. A total of 42 broilers were divided into two, group A (vaccinated with ND) and B (not vaccinated ND), each with 21 heads. Group A is divided into groups A1, A2 and A3 each with 7 heads. The A1 group is given only basal feed; A2 basal feed and AGP; A3 basal feed and Promix®. Group B is divided by B1, B2 and B3 same as group A before. Broilers are maintained for 5 weeks and weighing each week. All data obtained were statistically analyzed using One Way ANOVA and continued with Duncan's post hoc test. The results of this study were that the group of chickens given the ND vaccine and given supplements of Promix® had greater weight gain (P˂0.05) compared to the AGP and basal groups in the fifth week while in the group of chickens that were not given the ND vaccine but given supplement Promix® feed had greater weight gain (P˂0.05) compared to the AGP and basal groups in the fourth week. In the fifth week there was no significant difference (P˂0.05) between all feed groups in the group not given the ND vaccine. The conclusion of this study that feed additives contain combinations herbal and probiotics can replace AGP as feed additive in broiler. By giving ND vaccine the weight gain of the feed group plus Promix® showed a significant increase in weight gain.

scholarly journals Effect of corn substitution with Enzymated apple pomace on broiler production performance and percentage internal organ of broiler chickens

2021 ◽  
Vol 31 (1) ◽  
pp. 60-65
Author(s):  
Irfan H Djunaidi ◽  
Muharlien Muharlien ◽  
Yuli Frita Nuningtyas
Keyword(s):  
Animal Feed ◽  
Energy Content ◽  
Apple Pomace ◽  
Feed Additives ◽  
Production Performance ◽  
Feed Consumption ◽  
Poultry Feed ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Growth Promoters

Corn is a feedstuff that use as a major component of energy sources and hard to be replaced other feedstuff in poultry ration, even its use is always above 45% in the composition of poultry feed. However, domestic maize availability is limited and the price is changes depend on season harvest time, and most of the availability for animal feed is still imported. Besides that, there is a ban on the use of Antibiotic Growth Promoter (AGP) in poultry feed and drinking water effectively since January 2018, so an effort is needed to replace AGP with natural feed additives or Natural growth promoters (NGP). Based on the above conditions, it is necessary to make efforts to replace corn with local feed ingredients, one of which is apple extraction pomace (apple pomaces). The pomace of apple extraction, if left unchecked, will quickly rot so that it will potentially as an environmental pollutant. The potential of apple pomace extract can be used as a feed ingredient with high sugar and energy content (2300 kcal/kg BK). This research was conducted in the Field Laboratory of Sumber Sekar, Laboratory of Animal Nutrition and Feed, Faculty of Animal Husbandry, Agricultural Technology Laboratory, Brawijaya University. The experiment used 192 DOC broilers and placed them in 8 postal cages per replication. Research on Enzymanted apple pomaces (EAP) as a substitute for corn used a completely randomized design (CRD) P0: basal feed, P1: substitution of EAP 5%, P2: substitution of EAP 10%, P3: substitution of EAP 15%. The variables observed were the production performances include (feed consumption, weight gain, feed conversion ration) and the % internal organs. Based on the research, the results were not significantly different on the production performances and the % of organs in broilers. The use of apple pomaces can be used as a substitute for broiler feed up to a level of 15%.

ВЛИЯНИЕ КОМПЛЕКСНОЙ МИНЕРАЛЬНО-ВИТАМИННОЙ КОРМОВОЙ ДОБАВКИ НА ГЕМАТОЛОГИЧЕСКИЕ И БИОХИМИЧЕСКИЕ ПОКАЗАТЕЛИ КРОВИ ТЕЛЯТ

2020 ◽  
Author(s):  
M.T. SABITOV ◽  
A.R. FARKHUTDINOVA ◽  
M.G. MALIKOVA ◽  
N.G. FENCHENKO ◽  
N.I. KHAIRULLINA ◽  
...  
Keyword(s):  
Animal Feed ◽  
Food Additives ◽  
Test Group ◽  
Feed Additives ◽  
Feed Additive ◽  
Control Group ◽  
Special Role ◽  
Young Stock ◽  
Black And White ◽  
Calcium Phosphorus

Изучена целесообразность использования в рационах телят черно-пестрой породы комплексной минерально-витаминной кормовой добавки (КМВКД). Установлено пониженное содержание в кормах таких элементов, как кальций, фосфор, магний, сера, марганец, медь, цинк и кобальт. Соотношение питательных и минеральных веществ, степень их доступности для усвоения организмом не обеспечивают их потребность. Использование КМВКД способствовало улучшению всех гематологических показателей. Все испытываемые рецепты, имеющие в своем составе разные варианты макро-, микроэлементов и витаминов положительно влияют на обменные про- цессы в организме животных. У молодняка опытной группы, получавшей подкормку по рецепту 1, количество эритроцитов в сравнении с животными контрольной группы увеличилось на 6,6, гемоглобина на 6,93 соответственно, по рецепту 2 11,05 и 11,39 по рецепту 3 16,75 и 15,27, то есть соотношение макро- и микроэлементов, имеющихся в составе КМВКД и взаимодействие между собой меди, железа и кобальта сыграли особую роль на концентрацию форменных элементов. У молодняка, получавшего подкормку по рецепту 1 количество общего белка в сравнении с животными контрольной группы увеличилось на 1,99, кальция на 16,02, каротина на 10,92 соответственно, по рецепту 2 4,91, 25,96 и 19,12 по рецепту 3 на 3,58, 27,07 и 20,21. Значительное повышение содержания белка, кальция, фосфора и каротина по сравнению с животными контрольной группы объясняется тем, что недостаток их в рационах восполнялся за счет используемой подкормки, в результате их содержание увеличилось в сыворотке, но не выходило за пределы нормативных данных и соответствовало физиологическим нормам.Practicability of using a complex mineral and vitamin feed additive (CMVFA) in the ration of black-and-white calf breed was studied. Decreased content of such elements as calcium, phosphorus, magnesium, sulfur, manganese, copper, zinc, and cobalt was registered. The correlation of nutritive and mineral substances, and the level of their availability for digestion did not provide for their need. CMVFA use facilitated the increase of all hematologic parameters. Tested recipes which had different content of sapropel and zeolite, as well as various types of macronutrients, microelements, and vitamins, positively influenced the digestive processes in animal bodies. Young stock from the test group that was receiving food additives according to recipe No. 1 showed 6.6 increase in the quantity of red blood cells compared to control group animals, and 6.93 increase in hemoglobin quantity the ones who were fed according to recipe No. 2 demonstrated the increase by 11.05 and 11.39 recipe No. 3 showed 16.75 and 15.27 increase, which means that the ratio of macronutrients and microelements present in CMVFA and the mutual interaction of copper, iron, and cobalt played a special role in the concentration of formed elements due to the fact that they are integral elements of blood. Total protein of young stock that was receiving food additives according to recipe No. 1 was 1.99 higher than in test group animals calcium 16.02 higher carotene 10.92 as for recipe No. 2 the values were increased by 4.91, 25.96, and 19.12 recipe No. 3 3.58, 27.07, and 20.21. Substantial increase in the content of protein, calcium, phosphorus, and carotene compared to control group animals can be explained by the fact that their insufficiency in animal feed was replenished due to the use of feed additives, and as a result their content increased in the serum but did not go beyond the norm and corresponded to physiological norms.

scholarly journals Review: Peluang Pengembangan Imbuhan Pakan Fitogenik Sebagai Pengganti Antibiotika dalam Ransum Ayam Pedaging di Indonesia

2019 ◽  
Vol 6 (2) ◽  
pp. 188
Author(s):  
Cecep Hidayat ◽  
Rahman Rahman
Keyword(s):  
Broiler Chicken ◽  
Scientific Literature ◽  
Feed Additives ◽  
Feed Additive ◽  
Growth Promoter ◽  
Literature Study ◽  
The Third ◽  
Feed Industry ◽  
Broiler Diet ◽  
Main Support

ABSTRAK                                                            Seiring dengan telah dilarangnya penggunaan antibiotic growth promotor (AGP) dalam pakan oleh pemerintah Indonesia, maka pencarian pengganti AGP mejadi penting saat ini. Imbuhan pakan fitogenik menjadi salah satu pengganti AGP potensial. Makalah ini ditulis untuk mengungkap peluang pengembangan imbuhan pakan fitogenik sebagai pengganti AGP dalam ransum ayam pedaging di Indonesia. Metode penulisan makalah dilakukan dengan beberapa tahapan. Tahapan pertama, tahap persiapan, dilakukan dengan mengumpulkan dan membaca jurnal, makalah prosiding, buku yang diperoleh dari hasil dari pencarian  pada internet. Dilanjutkan dengan memilih dan menentukan jurnal hasil penelitian, makalah ilmiah pada prosiding, buku terkait dengan topik yang sudah ditentukan. Tahapan ke dua, penyusunan outline makalah yang akan ditulis, dimana pada tahapan ini untuk menentukan skema berfikir penulis terkait dengan topik yang akan di bahas. Tahapan ke tiga, mengembangkan kerangka makalah dengan menggunakan literatur ilmiah, teori, hasil penelitian yang sudah diperoleh. Tahapan ke empat, pemeriksaan terhadap isi makalah yang sudah ditulis, baik secara substansi maupun redaksional. Berdasarkan studi pustaka yang dilakukan disimpulkan bahwa imbuhan pakan fitogenik dari berbagai jenis tanaman potensial digunakan sebagai pengganti AGP dalam pakan ayam pedaging. Kebutuhan akan daging ayam nasional yang semakin tinggi setiap tahunnya, menjadi peluang betapa besarnya pasar akan kebutuhan pengganti AGP di Indonesia. Sinergisme antara lembaga penelitian-perguruan tinggi dengan pelaku industri pakan dan imbuhan pakan menjadi penopang utama dalam pengembangan imbuhan pakan fitogenik di Indonesia.Kata Kunci: imbuhan pakan fitogenik, ayam pedagingABSTRACTKeywords: pytogenic feed additive, broiler chicken The use of antibiotic growth promoter (AGP) in feed has been banned by the Indonesian government. Therefore, the search for alternative AGP continues to be carried out. The addition of phytogenic is one of the potential alternatives because it has the same ability as AGP. This paper was written to reveal the opportunities for developing phytogenic feed additives as a substitute for antibiotics in broiler diet in Indonesia. The method of writing this paper was done in several stages. The first stage, the preparation, is done by searching and reading journals, proceedings, books obtained from the internet. The second method is the preparation of the outline of the paper to be written, to determine the author's thinking scheme related to the topic to be discussed. The third method is developing a framework of thought by using scientific literature obtained and read before. Fourth method is examination of the contents of papers that have been written, both substantially and editorially. Based on the literature study, it was concluded that the phytogenic feed additives from various types of plants should be considered as a substitute for AGP in broiler diet.  The need for national chicken meat which is getting higher every year becomes an opportunity for how big the market will be for AGP's replacement in Indonesia. Synergism between university-research institutions and feed industry is the main support in developing phytogenic feed additives in Indonesia.Keywords: pytogenic feed additive, broiler chicken

scholarly journals Influence of the biologically active dietary supplement Floravit® on the skin and hair structure in sable (Martes zibellina)

2018 ◽  
Vol 22 (2) ◽  
pp. 256-260
Author(s):  
N. N. Loenko ◽  
I. E. Chernova ◽  
T. S. Kunitsina
Keyword(s):  
Adult Female ◽  
Morphological Structure ◽  
Test Group ◽  
Positive Influence ◽  
Biologically Active ◽  
Physiological Adaptation ◽  
Feed Additive ◽  
Hair Length ◽  
Martes Zibellina ◽  
Dermal Thickness

It is important to search for new highly effective multicomponent compounds that are able to influence several of animals’ homeostasis systems simultaneously to improve the physiological adaptation of fur animals to different conditions of nutrition. This is the function of the feed additive Floravit® – a natural bioregulator. The compound is a combination of biologically active ingredients produced by the mycelial fungus Fusarium sambucinum. Studied was the effect of Floravit® on the structure of the skin and hair in adult female sable (Martes zibellina). The scientific and economic experiment was conducted at the JSC “Plemzavod Pushkinskyi” in the Moscow Region during the period of winter fur formation in October-November. The study of the morphological structure of the hair and skin cover was carried out in the chine, side and rump topographical areas. The structure of the guard hairs in the main topographical areas was examined on a scanning electron microscope. The experiment showed that administration of Floravit® per os to adult female sable at a dose of 1.0 ml per head per day throughout the period of winter pelt formation in October-November has an influence on the morphological structure of all the categories of hair on all topographic pelt areas. Animals in the test group exposed to Floravit® exhibited an increase in guide hair length on the chine and side, when compared to controls, by 4.1 mm (p < 0.001) and by 2.8 mm (p < 0.01), respectively. The length of guard hair on the chine, side and rump increased by 8.1, 7.8 and 7.8 mm (p < 0.001), respectively. An increase in down hair length was recorded in all areas of the pelt, when compared to controls, by 13.0, 4.5 and 6.3 mm (p < 0.001). An increase in dermal thickness was recorded in the chine area by 0.7 mm (p < 0.001). The specified changed in the skin and hair structure in sable adult females after using Floravit® have shown a positive influence on the quality of hair cover. As a result, bioregulator Floravit® takes part in the adaptation process of the sable organism to external factors.

scholarly journals System of antioxidant protection of the body of piglets under the action of feed additive “Sylimevit”

2021 ◽  
Vol 23 (104) ◽  
pp. 10-17
Author(s):  
L. V. Vyslotska ◽  
B. V. Gutyj ◽  
O. V. Kozenko ◽  
V. I. Khalak ◽  
M. V. Chornyj ◽  
...  
Keyword(s):  
Body Weight ◽  
Antioxidant Defense System ◽  
Feed Additives ◽  
The Body ◽  
Biologically Active ◽  
Feed Additive ◽  
Free Access ◽  
Direct Acting ◽  
Active Substances ◽  
Technological Stress

One of the conditions for obtaining high-quality pig products is the use of feed additives, which contain all the necessary biologically active substances, eliminating their deficiency in feed and acting as catalysts for metabolic processes in pigs. That is why the aim of the study was to study the effect of feed additive “Sylimevit” on the enzymatic and non-enzymatic parts of the antioxidant system of piglets after weaning. Two groups of piglets were formed – control and experimental, in the amount of 10 individuals in each group, selected on the principle of analogues – age, breed and body weight. During the weaning period, the piglets were kept under the sow in special machines, had constant access to the mother, and from the age of 5 days – free access to concentrated feed. Feeding of animals was carried out in accordance with the norms for a given age of pigs. Prior to the study, a clinical and physiological examination of the piglets was performed. Their general condition and activity when eating food were taken into account. On the 28th day of life, the piglets were weaned from the sow and regrouped from different nests in order to be further maintained during the period of fattening and rearing with a change in the structure of the diet, which served as technological stress for the animals. From the age of 5 days, piglets of all groups were fed pre-starter feed. Piglets of the experimental group, from 21 to 40 days of age, were additionally fed the feed supplement “Sylimevit” at a dose of 100 mg/kg body weight per day. Feeding piglets Silimevit feed enhances their antioxidant status. The use of this feed additive in piglets contributed to the activation of both enzymatic and non-enzymatic parts of the antioxidant defense system of piglets after weaning, as indicated by an increase in blood 35-day-old piglets superoxide dismutase activity by 26.9 % (P < 0.001), catalase – 41.1 % (P < 0.001), glutathione peroxidase – by 52.7 % (P < 0.05), glutathione reductase – by 53.5 % (P < 0.05), the content of reduced glutathione – by 75 % (P < 0.001). This is due to the fact that silimevit contains active substances such as milk thistle and vitamins, which are strong direct-acting antioxidants and directly interact with free radicals and reactive oxygen species.

scholarly journals CHEMICAL COMPOSITION AND NUTRITIONAL VALUE OF THE NEW CITRUS POMACE FEED ADDITIVE

2021 ◽  
Vol 20 (4) ◽  
pp. 33-37
Author(s):  
O. Karunskyi ◽  
G. I. Kotets ◽  
M. M. Madani
Keyword(s):  
Chemical Composition ◽  
Nutritional Value ◽  
Positive Influence ◽  
Feed Additives ◽  
Farm Animals ◽  
Feed Additive ◽  
Feed Ingredients ◽  
Feed Costs ◽  
Citrus Waste ◽  
Granulation Technology

The materials of the article present data on research on the chemical, mineral-vitamin composition and nutritional value of a new feed additive from citrus pomace. The article presents the results of research on the technological line of granulation of citrus waste, established the optimal composition for granulation of citrus feed additives: sunflower meal - 20%, molasses - 5% and 75% of citrus fruits.Their chemical composition was studied, the gross content of proteins, fats, assimilated carbohydrates, including simple sugars, was determined, and the efficiency of use in the diets of farm animals was determined. The positive influence of citrus waste granulation technology has been established, which allows to obtain high-quality granules. Chemical analysis of citrus granules showed that 100 g contains: protein - 6.15 g, fat - 0.99 g, carbohydrates - 21.8 g, of which simple sugars 14 g, the energy value of this feed additive - Kcal (kJ) - 120.7 (505.7).The possibility of preparation of feed additives in the form of granules is revealed, which allows to avoid selfsorting of components and overdose of microelements and to improve the consumption of feed ingredients. The ability to prepare feed additives in the form of granules avoids self-sorting of components and overdose of micronutrients and improve the consumption of feed ingredients. The results of zootechnical researches, structure and nutritional value of average daily rations with use of citrus pomace are resulted.It was found that the introduction into the diet of dairy cows feed additives from citrus pomace during stable lactation increases the average daily expectations by 1.8 kg or 15.5%, feed costs for milk production containing 4 fat were 0.97-0, 98 feed units. When using a feed additive from citrus pomace, the nutritional value of the diet is improved due to the ratio of sugar - protein (0.62: 1 vs. 0.8: 1.2).

289 Phytogenic Feed Additives as a Potential Strategy to Mitigate the Negative Effects of Heat Stress in Growing Heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 156-157
Author(s):  
Shelby M Ramirez ◽  
Janaka Wickramasinghe ◽  
Nadiia Stepanchenko ◽  
Maria Oconitrillo ◽  
Jayamuni Silva ◽  
...  
Keyword(s):  
Heat Stress ◽  
Fixed Effects ◽  
Recovery Period ◽  
Random Effect ◽  
Antioxidant Properties ◽  
Feed Additives ◽  
Feed Additive ◽  
Negative Effects ◽  
Humidity Index ◽  
Potential Strategy

Abstract Phytogenic feed additives that contain anti-inflammatory and antioxidant properties may have potential to reduce inflammation and oxidation observed during bouts of heat stress. The trial objective was to determine the effects of a phytogenic feed additive on markers of stress in heifers subjected to diurnal heat stress (dHS). Eighteen Holstein and four Jersey heifers (5–6 months of age; d1 BW=205±9 kg) were assigned to two dietary treatments (n = 11) based on breed and age; 1) a basal TMR diet (CTL), 2) CTL supplemented with 0.25 g/head/d of a proprietary blend of phytogenics (PFA; BIOMIN America, Inc., Overland Park, KS). Heifers were housed individually and fed their respective treatments for 14d prior to dHS (d-14-1), subjected dHS (d1-7), and followed through a recovery period (d8-11). Weights were collected at d1 (baseline), d7 (end of dHS), and d11 (end of recovery). The temperature set point was assigned at 33°C from 0900 to 2100 h and allowed to equilibrate with outside temperature during night (24°C) for a total of 7d dHS. Total DMI (tDMI) and DMI from 0900 to 2100 h (hsDMI) were recorded daily. Serum was collected at d1, 2, 7 and 11 to determine effect of treatment on markers of oxidation, inflammation, and stress. Treatment effects were analyzed using PROC MIXED in SAS with treatment and time as fixed effects and heifer as a random effect. Temperature humidity index during dHS was greater during the day (84.5) versus night (73.3). There were no treatment differences (P&gt;0.05) in d 0–11 on ADG, ADFI, or GF between treatments. However, PFA numerically increased hsDMI, reduced (P&lt; 0.05) haptoglobin and tended to reduce (P&lt; 0.10) lipopolysaccharide binding protein compared with CTL. Overall, dietary PFA may be a potential strategy to mitigate the stresses that heifers experience during dHS.

Sign in / Sign up

Export Citation Format

Share Document