Animal Feed Science and Technology最新文献

{"title":"Effect of xylanase and Lentilactobacillus buchneri on corn silage harvested at two maturity stages","authors":"Wagner Sousa Alves,&nbsp;Alberto Jefferson da Silva Macêdo,&nbsp;Gabriela Duarte Oliveira Leite,&nbsp;Gabriel Ferreira de Lima Cruz,&nbsp;Tâmara Chagas da Silveira,&nbsp;Danielle Nascimento Coutinho,&nbsp;Albert José dos Anjos,&nbsp;Felipe Almeida Soares,&nbsp;Odilon Gomes Pereira,&nbsp;Karina Guimarães Ribeiro","doi":"10.1016/j.anifeedsci.2024.116111","DOIUrl":"10.1016/j.anifeedsci.2024.116111","url":null,"abstract":"<div><p>The aim of this study was to evaluate the aerobic stability (AS), fermentative profile, and nutritive value of corn silage harvested at two maturity stages, with the use of xylanase, associated or not with <em>Lentilactobacillus buchneri</em>. In trial 1, corn was harvested with a low dry matter (DM) content (250 g/kg) and ensiled in a 4 × 2 factorial scheme (4 additives and 2 storage periods), in a completely randomized design, with 4 replications. The additives tested were as follows: control (CT; no inoculant), <em>L. buchneri</em> (LB), xylanase (XL), and LB+XL (LBXL). The storage periods were 30 and 60 days. The neutral detergent fiber (P=0.041) and acid detergent fiber (P=0.024) content were lower in LB silage after 60 days of storage. The lactic acid bacteria population was higher (P&lt;0.001) in LB and LBXL, while the yeast population (P=0.008) decreased in these treatments. The lactic acid concentration was lower (P&lt;0.001) in LB at 30 days and higher at 60 days. The acetic acid content was higher (P=0.014) in LB at 60 days, but there was no difference between treatments at 30 days. The AS was higher (P&lt;0.001) in LB and LBXL silages. All additives increased the soluble fraction of DM (P=0.015) and organic matter (OM; P=0.013). The effective digestibility of DM and OM was higher (P≤0.001) for LB and lower for CT at all passage rates. In trial 2, corn was harvested at a high DM content (360 g/kg) and ensiled in a completely randomized design with 5 replications, using the same additives as in trial 1. The ammonia content was lower (P=0.043) in LBXL silage and higher in LB. The lignin (sa) content was lower (P=0.019) in LBXL silage and higher in CT silage. The population of filamentous fungi (FUN) was higher (P=0.029) in CT silage and lower in LBXL. The same trend was observed in the population of FUN after 7 days of aerobic exposure (P=0.018). The effective digestibility of DM and OM at passage rates of 2 % was higher (P≤0.029) in LBXL silage and lower in XL silage. Inoculating corn silage with only <em>L. buchneri</em> was more efficient in improving the fermentative profile, aerobic stability, and nutritive value of silage than using xylanase associated or not with LB, especially in corn silage harvested at a low DM content.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"318 ","pages":"Article 116111"},"PeriodicalIF":2.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of black soldier fly (Hermetia illucens) larvae oil as a potential lipid source for largemouth bass (Micropterus salmoides): Growth performance, myofiber development and glucolipid metabolism","authors":"Meng Xia,&nbsp;Zechao Hu,&nbsp;Gang Wang,&nbsp;Xiangtong Yuan,&nbsp;Hong Ji,&nbsp;Jian Sun,&nbsp;Haibo Yu","doi":"10.1016/j.anifeedsci.2024.116102","DOIUrl":"10.1016/j.anifeedsci.2024.116102","url":null,"abstract":"<div><p>Black soldier fly larvae oil (BSFLO) is considered as a by-product of the production process of defatted black soldier fly larvae meal at present, and may show the potential to be used as a lipid source for aquafeeds. In this study, a total of 300 largemouth bass (initial body weight 7.95 g) were fed diets containing different levels of BSFLO for 56 d to evaluate its effects on the growth performance, fatty acid composition, antioxidant capacity and glucolipid metabolism. Five isonitrogenous and isolipidic diets were designed with fish oil supplemented feed (FO) as the control diet and then feeds with BSFLO replacing 12.5 %, 25 %, 50 % and 100 % of the fish oil (BSFLO12.5, BSFLO25, BSFLO50, BSFLO100) as the treatment diets. No significant changes in weight gain and specific growth rate were observed between groups, but BSFLO100 showed a significant change in feed conversion ratio, higher than the control group (<em>P</em> &lt; 0.05). The muscle and liver C12:0 and ∑n-6 PUFA content increased with the addition of BSFLO, while C20:5n-3, C22:6n-3 and ∑n-3 PUFA content gradually decreased, and significant differences were observed between FO and BSFLO100 (<em>P</em> &lt; 0.05). Expression of hepatic <em>Δ6fad</em> and <em>FABP</em> genes was lower in the FO group and the highest in BSFLO50 and BSFLO100 (<em>P</em> &lt; 0.05). In terms of myofiber development, Dietary BSFLO led to e a progressive increase in myofiber diameter and area, while the expression of <em>smad-2</em> gene in muscle was significantly reduced in BSFLO25 and BSFLO50 (<em>P</em> &lt; 0.05). Besides, the serum glucose levels were significantly lower in BSFO12.5, BSFLO50 and BSFLO100, and dietary 8 % BSFLO (BSFLO100) resulted in a decrease in hepatic glycogen content from 94 mg g⁻¹ to 71.78 mg g⁻¹, along with the expression of glycolysis-related genes (<em>GK, PK</em> and <em>PFK</em>) and enzyme (PK and PFK) activities (<em>P</em> &lt; 0.05), while the expression of gluconeogenesis-related genes (<em>G6Pase</em>) was significantly increased (<em>P</em> &lt; 0.05). Dietary 4 % BSFLO (BSFLO50) increased muscle and liver T-SOD activity and simultaneously reduced muscle MDA content (<em>P</em> &lt; 0.05), which has the best antioxidant properties. One-variable linear regression analysis revealed that various parameters of feed utilization, glucose metabolism, and muscle development in fish were significantly and linearly affected by dietary BSFLO levels (<em>P</em> &lt; 0.05). In summary, if only optimal glucose lowering is considered, 8 % BSFLO is recommended. However, if feed utilization efficiency is taken into account, it is recommended that dietary BSFLO be added at no more than 4 %.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"318 ","pages":"Article 116102"},"PeriodicalIF":2.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ensiling sugar beets: Effect of mixer feed used for co-ensiling on fermentation products and losses when ensiled in vacuum bags","authors":"Emma Marie Vallentin Hvas ,&nbsp;Mogens Larsen ,&nbsp;Lars Andersen ,&nbsp;Ulrike Bedenk ,&nbsp;Martin Riis Weisbjerg","doi":"10.1016/j.anifeedsci.2024.116101","DOIUrl":"10.1016/j.anifeedsci.2024.116101","url":null,"abstract":"<div><p>Co-ensiling beets with other feeds allows for year-round feeding of beets and reduces the risk of dry matter (DM) loss as effluent from the silage. This study aimed to evaluate the effect of co-ensiling high DM beets with maize and grass/clover silage, grass seed straw, fresh beet pulp, and high DM concentrates (dried beet pulp, wheat distillers’ grain solubles; DDGS, wheat bran, rapeseed meal, sunflower meal, soybean hulls, and maize gluten feed) on gaseous weight loss (GWL), loss of effluents, and silage quality. Beets from harvest year 2021 were used to produce two sets of silages in laboratory silos, resulting in a total of 2 pure beet silages and 12 mixed beets silages. GWL was measured by weighing the laboratory silos until 181 days of ensiling. Fermentation was terminated by freezing after 30, 92, and 181 days of ensiling where loss of effluent was also measured. Total GWL was highest in the two pure beet silages (mean ± SEM; 282 ± 5.47 and 250 ± 7.94 g/kg DM, respectively), and differed among the mixed silages depending on mixer feed. Effluent was only observed in the pure beet silage in Set 1. Silage DM content at 181 days of ensiling was lowest for the two pure beet silages (180 ± 10.9 and 165 ± 5.95 g/kg). For all silages, pH was below 4.25 by 30 days of ensiling. Ethanol concentrations at 181 days of ensiling were highest in the two pure beet silages (345 ± 11.5 and 287 ± 11.8 g/kg DM). L-lactate content of pure beet silages was 38.4 ± 1.85 and 31.1 ± 1.21 g/kg DM at 181 days of ensiling. In Set 1, L-lactate content was lower in beets ensiled with maize silage, grass seed straw, dried beet pulp, or DDGS compared to pure beet silage. In Set 2, L-lactate content was higher in beets ensiled with maize gluten feed compared to pure beet silage. Silage concentration of NH₃ varied depending on mixer feed. The NH₃ content at 181 days of ensiling was 0.817 ± 0.626 and 2.05 ± 0.601 g/kg DM for pure beet silages and was highest in beets ensiled with grass/clover silage in both silage sets (16.4 ± 0.63 and 17.6 ± 0.60 g/kg DM). Co-ensiling beets with forages, high DM concentrates, and protein-rich feeds included in this study lowered fermentation weight loss, eliminated the loss of effluent, and resulted in silages of good fermentation quality.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"318 ","pages":"Article 116101"},"PeriodicalIF":2.5,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0377840124002293/pdfft?md5=4bfa674a0e392bb55c1b5b3c2475835c&pid=1-s2.0-S0377840124002293-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increasing concentrations of low SMCO swedes in the diet of dairy cows improves performance and ruminal metabolism without affecting dairy cow health","authors":"J.P. Keim ,&nbsp;J.C. Ríos ,&nbsp;R. Pinto-Pinuer ,&nbsp;O.A. Balocchi ,&nbsp;R.G. Pulido ,&nbsp;P. Sepúlveda-Varas ,&nbsp;D. Pacheco ,&nbsp;R. Berthiaume ,&nbsp;E. Vargas-Bello-Pérez","doi":"10.1016/j.anifeedsci.2024.116100","DOIUrl":"10.1016/j.anifeedsci.2024.116100","url":null,"abstract":"<div><p>This study aimed to determine dry matter intake, ruminal fermentation, health-related blood metabolites, and production responses of early-lactation dairy cows fed two inclusion levels (30 and 45 %) of low SMCO swedes in the diet. Twelve pregnant multiparous lactating Holstein-Friesian dairy cows (24.1 ± 0.72 kg milk/d, 540 ± 7.3 kg BW, and 142 ± 3.9 DIM at the start of the study) were used in this study. Cows were randomly allocated to three dietary treatments in a replicated 3 ×3 Latin square design. The experiment lasted 63 d and was divided into three 21-d periods. Inclusion of swedes at 30 and 45 % in the diet had no effect on DMI, but increased milk, protein and fat yields, as well as CP concentration in milk. This was due to changes in VFA patterns with greater molar proportions of propionate and butyrate, as well as a greater utilisation of dietary N that was converted to microbial N. No negative effects on haematological and biochemical blood parameters, except for increased BHB concentrations. Fatty acids composition in milk was modified, with a greater proportion of saturated FA and lower n-3 FA. Overall, low SMCO swedes can be included up to 45 % in the diet of pasture fed dairy cows during winter.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116100"},"PeriodicalIF":2.5,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142094885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of dietary full-fat Hermetia illucens larvae meal on growth performance and intestine physiology in largemouth bass (Micropterus salmoides)","authors":"Wenjing Dong ,&nbsp;Xvdong Ran ,&nbsp;Guanglun He ,&nbsp;Wei Hu ,&nbsp;Yongjun Chen ,&nbsp;Yuanfa He ,&nbsp;Shimei Lin","doi":"10.1016/j.anifeedsci.2024.116089","DOIUrl":"10.1016/j.anifeedsci.2024.116089","url":null,"abstract":"<div><p>The present study aimed to investigate the effects of different inclusion levels of full-fat <em>Hermetia illucens</em> larvae (HI) meal as a protein source on the growth performance, intestinal morphology, health, and microbiota of largemouth bass. Five isonitrogenous and isolipidic diets were formulated by adding HI to replace 0 % (HI0, control), 10 % (HI10), 20 % (HI20), 30 % (HI30) and 40 % (HI40) of fish meal (FM) in diets. Each diet was randomly assigned to triplicate groups of 30 fish per aquarium. Fish were fed two times daily to apparent satiation for 80 days. The results indicated that weight gain rate, specific growth rate and protein efficiency ratio were not appreciably reduced until more than 30 % of the FM protein was replaced with HI. Fish fed HI40 diet had the lowest fatty acid (C18:3, C20:5, C22:6) contents (<em>P</em> &lt; 0.05). Moreover, the villi height was decreased, villi width and goblet cell number in hindgut was increased in the HI40 group compared with the other groups, respectively. Meanwhile, serum diamine oxidase activity, D-lactate and endotoxin contents increased markedly as the proportion of HI increased (<em>P</em> &lt; 0.05). Notably, the increased dietary HI levels down-regulated the mRNA expression levels of <em>cldnd1b</em> and <em>ocel1</em> in intestine. Higher malondialdehyde content and down-regulated expression of <em>sod</em> and <em>gpx1a</em> in the intestine were also observed in the HI40 group. Accordingly, the increased dietary HI levels upregulated the expression of intestinal pro-inflammatory cytokines (<em>tumor necrosis factor-α and interleukin-1β</em>) and down-regulated anti-inflammatory cytokines (<em>transcriptional growth factor-β1 and interleukin-10</em>) (<em>P</em> &lt; 0.05). In addition, the abundance of both intestinal <em>Lactobacillus</em> and <em>Streptococcus</em> increased significantly, while the abundance of <em>Cetobacterium</em> decreased in the HI20 group (<em>P</em> &lt; 0.05). Broken-line model analysis based on weight gain rate against dietary HI replacement level indicated that the optimum replacement level was 26.79 %. However, including too high proportion of HI could induce intestinal dysbiosis, impair the intestine physical barrier, and finally reduced growth of <em>Micropterus salmoides</em>.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116089"},"PeriodicalIF":2.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feeding almond hulls to light lambs: Effects on growth performance, digestive utilization and blood metabolites","authors":"A. Recalde ,&nbsp;T. de Evan ,&nbsp;M. Benítez ,&nbsp;J. de la Fuente ,&nbsp;B. Barrero-Domínguez ,&nbsp;A. García-Sánchez ,&nbsp;M.D. Carro","doi":"10.1016/j.anifeedsci.2024.116090","DOIUrl":"10.1016/j.anifeedsci.2024.116090","url":null,"abstract":"<div><p>The effects of including almond hulls (AH) in the concentrate fed to light lambs on animal performance, diet utilization, and blood metabolites. Three isonitrogenous and isoenergetic concentrates were formulated with either 0 (control), 6 (AH6) or 12 (AH12) g of AH per 100 g (fresh matter basis). Thirty Manchega breed lambs (15 males and 15 females; 12.3 ± 0.18 kg body weight (BW)) were distributed into six homogeneous groups according to BW (3 groups of each sex), which were randomly assigned within sex to each experimental concentrate. Lambs were fed concentrate and barley straw <em>ad libitum</em> until reaching about 23.0 kg BW. There were no differences (P ≥ 0.182) between groups in final BW, intake of concentrate and straw, and feed conversion rate. Average daily gain and digestibility of dry matter and crude protein tended (P &lt; 0.10) to decrease by the AH inclusion in the concentrate. Lambs fed AH12 showed greater (P &lt; 0.05) urinary losses than those fed the control concentrate (15.4 and 11.5 g per 100 g of N intake, respectively), despite the similar N intake in all groups. Feeding AH did not affect (P ≥ 0.213) blood concentrations of albumin, globulins, urea, creatinine, glucose, total bilirubin and cholesterol or blood activities of hepatic enzymes. The <em>post-mortem</em> analysis revealed no differences among groups in pH and total volatile fatty acids (VFA) concentrations in the rumen of lambs, but NH₃-N concentrations were lower (P &lt; 0.05) in the lambs fed the concentrates with AH. In addition, lambs fed AH12 diet had lower (P &lt; 0.05) molar proportions of propionate and greater (P &lt; 0.05) proportions of butyrate compared with lambs fed control and AH6 concentrate. In general, no concentrate x sex interactions were observed, and sex had no effect on the measured parameters except for some differences in ruminal VFA profile. In conclusion, AH can be included at in light lambs’ concentrate up to 12 g per 100 g of concentrate without impairing animal growth.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116090"},"PeriodicalIF":2.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Threonine supplementation stimulates immune, antioxidant and liver functions of largemouth bass, Micropterus salmoides","authors":"Mohammad Mizanur Rahman ,&nbsp;Hang Yang ,&nbsp;Xiaoqin Li ,&nbsp;SM Sharifuzzaman ,&nbsp;Abdullateef Yusuf ,&nbsp;Wenxiang Yao ,&nbsp;Pinxian Yang ,&nbsp;Xiangjun Leng","doi":"10.1016/j.anifeedsci.2024.116087","DOIUrl":"10.1016/j.anifeedsci.2024.116087","url":null,"abstract":"<div><p>Threonine is an essential amino acid required in the diets for regular growth of fishes, but information is inadequate regarding the effects of threonine on immunity and health status of many aquaculture species. In the present study, a total of 360 juvenile largemouth bass, <em>Micropterus salmoides</em> (19.0 ± 0.1 g) were divided into six experimental groups, and fed diets supplemented with varying levels of crystalline L-threonine at 0 g kg⁻¹ (control), 2.5 g kg⁻¹ (Thr-2.5), 5.0 g kg⁻¹ (Thr-5.0), 7.5 g kg⁻¹ (Thr-7.5), 10.0 g kg⁻¹ (Thr-10.0) and 12.5 g kg⁻¹ (Thr-12.5) for eight weeks. The results revealed that white blood cell count (<em>P</em> = 0.024) and albumin content (<em>P</em> = 0.006) in fish were significantly modulated by the dietary threonine, with the highest levels recorded in fish fed diets Thr-5.0 and Thr-12.5, respectively. White blood cell increased with dietary threonine levels up to Thr-5.0, then decreased thereafter. The other hematological variables such as red blood cell (<em>P</em> = 0.571), hemoglobin (<em>P</em> = 0.259), hematocrit (<em>P</em> = 0.985), mean corpuscular volume (<em>P</em> = 0.631), mean corpuscular hemoglobin (<em>P</em> = 0.280) and mean corpuscular hemoglobin concentration (<em>P</em> = 0.691) remained unchanged as compared to the control group. Serum lysozyme increased (<em>P</em> = 0.000) with increasing levels of threonine up to 5.0 g kg⁻¹. Fish receiving diet Thr-2.5 had relatively higher (<em>P</em> = 0.000) immunoglobulin M and the level decreased when fed with increasing levels of threonine. The activities of superoxide dismutase (<em>P</em> = 0.008) and malondialdehyde (<em>P</em> = 0.005) were elevated at 10.0 g kg⁻¹ and 12.5 g kg⁻¹ supplementation levels, respectively. Moreover, diets Thr-5.0 and Thr-10.0 induced lower serum alanine aminotransferase (<em>P</em> = 0.011) and aspartate aminotransferase activities (<em>P</em> = 0.000) in fish. These results suggest that threonine supplementation led to a positive effect on the hematology, humoral immunity, antioxidant capacity and liver function enzyme activities of economically important largemouth bass. Therefore, threonine has a clear role in fish nutrition and is important in formulating nutritionally balanced feeds.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116087"},"PeriodicalIF":2.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142014029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect on growth, gonad development, health and disease resistance against Aeromonas hydrophila of Origanum minutiflorum essential oil in Cyprinus carpio","authors":"Nalan Ozgur Yigit ,&nbsp;Secil Metin ,&nbsp;Behire Isıl Didinen ,&nbsp;Ozlem Ozmen ,&nbsp;Rahime Aslankoc ,&nbsp;Nimet Kara","doi":"10.1016/j.anifeedsci.2024.116086","DOIUrl":"10.1016/j.anifeedsci.2024.116086","url":null,"abstract":"<div><p>This study investigated the effects on growth performance, histopathology, intestinal histomorphology, antioxidant activity, serum biochemical parameters, and disease resistance against <em>A. hydrophila</em> of carp fed with oregano essential oil (EO). Fish (13.54±0.24 g) were fed with experimental diets containing 1.0 and 3.0 mL kg⁻¹ oregano EO for 60 days. At the end of the experiment, no significant difference was found among the growth performances of fish fed with oregano EO supplemented diets (<em>p</em>&gt;0.05). However, dietary administration of 3.0 mL kg⁻¹ oregano EO had significantly increased survival rates of common carp post-challenged with <em>A. hydrophila</em> (<em>p</em> &lt; 0.05). In addition, goblet cells number and villi length in the intestine were increased in fish fed with oregano EO diets (<em>p</em> &lt; 0.001). Also, no pathological findings were observed in hepatopancreas, gonads and intestines in fish fed with oregano EO. Fish fed with a diet containing 3.0 mL kg⁻¹ oregano EO showed higher catalase activity (CAT) than the other experimental groups (<em>p</em> &lt; 0.05). Superoxide dismutase (SOD), melondialdehyde (MDA), total protein, albumin, AST, ALT and ALP levels were similar in oregano EO supplemented groups compared to the control (<em>p</em> &gt; 0.05). Number of mature oocytes in female ovaries caused a slight increase in fish fed with oregano EO. Adding oregano EO to common carp diet showed improved intestinal histomorphology and increased the survival against the <em>A. hydrophila</em>. Therefore, <em>O. minutiflorum</em> EO can be used as a health promoter for carp.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116086"},"PeriodicalIF":2.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142044810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Protection capacity of Lactiplantibacillus plantarum 83114 against contamination of dry pet food with Aspergillus flavus","authors":"Ana F. Moretti ,&nbsp;Ángela León Peláez ,&nbsp;Marina A. Golowczyc","doi":"10.1016/j.anifeedsci.2024.116085","DOIUrl":"10.1016/j.anifeedsci.2024.116085","url":null,"abstract":"<div><p>A wide range of pet food types are available on the market and one of the most common ingredients of dry food are cereals, vectors of harmful mycotoxins. Mycotoxins are toxic secondary fungal metabolites that contaminate dry pet food and their levels remain stable during food processing. This has a direct effect on the quality of the product and on animal health. <em>Lactiplantibacillus plantarum</em> 83114 is a probiotic strain isolated from traditional fermented milk with proven antifungal activity in different matrix. This study investigated the antifungal activities of this strain against contamination of dry pet food with a mycotoxigenic <em>Aspergillus flavus</em> strain. The antifungal activity was assessed using a complete culture of viable <em>L. plantarum</em> 83114, cell free supernatants (CFS), and non-viable cells (postbiotics). The CFS of <em>L. plantarum</em> CIDCA 83114 (pH 4.04) exhibited a high germination reduction rate (GR 94.7 %). However, the neutralized CFS (pH 7.0) lost approximately 60 % of its inhibitory capacity. <em>L. plantarum</em> CIDCA 83114 CFS and postbiotic treatments at 50 % exerted a total fungal growth inhibition, observed in a growth rate (KD) of zero. The viability of <em>L. plantarum</em> 83114 inoculated in dry pet food decreased by one logarithmic order after the first week of storage and, by the second week, no viable cells were detected. The DNA concentration of <em>A. flavus</em> in dry pet food supplemented with the probiotic strain remained consistently low and stable throughout the storage period. <em>Lactiplantibacillus plantarum</em> 83114 played a crucial role in inhibiting fungal growth and could act as a biopreservative agent in pet food.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"316 ","pages":"Article 116085"},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of extruded soybean meal with different fat contents and varying oleic acid content on floating fish feed quality and composition","authors":"Danny B. Patiño ,&nbsp;Ondulla T. Toomer ,&nbsp;Thien C. Vu ,&nbsp;Edgar O. Oviedo-Rondon ,&nbsp;Rouf Mian ,&nbsp;Mike Frinsko ,&nbsp;Steven Hall ,&nbsp;Ryan Kelly ,&nbsp;Jason Mann ,&nbsp;Michael Joseph","doi":"10.1016/j.anifeedsci.2024.116088","DOIUrl":"10.1016/j.anifeedsci.2024.116088","url":null,"abstract":"<div><p>Soybean meal (SBM) is the most widely used source of high-quality plant protein within the feed industry. Raw soybeans are conventionally processed to reduce antinutritional factors, enhance protein bioavailability and improve the overall quality of the final feed product. New high-oleic (HO) cultivars with enhanced unsaturated fatty acids are being utilized in the production of HO SBM for use in the animal feed industry. However, no studies to date have examined the impact of HO SBM on feed formulation and processing of aquaculture feeds. Therefore, we aimed to determine the quality of feed for juvenile domesticated striped bass (<em><u>Morone saxatilis</u></em>) using SBM prepared from HO or normal-oleic (NO) soybeans and extrusion-expeller processing. The following four soybean meals were used in our experimental diets: solvent-extracted defatted normal oleic (SENO), full-fat normal oleic (FFNO), extruded-expelled defatted normal oleic (EENO), or full-fat high oleic (FFHO). These meals replaced half of the fishmeal (FM) normally included in a nutritionally complete marine finfish diet. Physico-chemical feed variables and chemical composition were determined during feed production. Data were analyzed using one-way ANOVA and means were separated using Tukey’s t-test. The specific mechanical energy of the diet was reduced with the addition of full-fat SBMs during the extrusion process. All finished fish diets were of similar high quality with high pellet durability index and protein content (<em>P</em> &gt; 0.05). This suggested that using different types SBM, including high oleic, to replace 50 % of the fish meal in a floating feed for juvenile domesticated striped bass does not adversely affect the feed quality or nutritional content.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":"317 ","pages":"Article 116088"},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}