Tropical animal health and production最新文献

{"title":"Therapeutic efficacy of moxifloxacin and marbofloxacin against mastitis in buffalo.","authors":"A A Shelke, M F M F Siddiqui, M P Sakhare, T A Shafi, P R Suryawanshi, S R Shaikh","doi":"10.1007/s11250-025-04323-9","DOIUrl":"https://doi.org/10.1007/s11250-025-04323-9","url":null,"abstract":"<p><p>Mastitis is a common economically important disease of dairy buffaloes. Antibiotic resistance is the most cited reason behind the failure of clinical mastitis treatment in buffaloes. Selection of antibiotic after antibiotic sensitivity test is the key to avoid multidrug resistance (MDR) for mastitis therapy. Therefore, the present research work was carried out to evaluate efficacy of moxifloxacin and marbofloxacin in clinical mastitis in buffaloes based on the sensitivity against common mastitic bacteria in buffaloes. Total twenty clinical mastitis positive buffaloes were selected after screening of 129 lactating buffaloes by strip cup test and clinical signs, in and around Parbhani area. The selected buffaloes were divided into 2 groups, 10 animals in each. Group I was treated with injection Moxifloxacin @ 5 mg/kg BW IM for 5 days and group II received injection Marbofloxacin @ 2 mg/kg BW IM for 5 days. Supportive treatment was given in both groups as antihistaminic, multivitamins and NSAIDs. The clinical parameters like rectal temperature, heart rate and respiratory rate showed significant improvement in both the treatment groups. Haematolgical study showed significant improvement in TLC, neutrophil and lymphocyte count while apparent but non-significant improvement observed in Hb, PCV, basophil, eosinophil and monocyte count. The most frequent bacteria observed in mastitic samples were Staphylococcus aureus, followed by E. coli, Klesiella spp. and mixed bacterial infection. Marbofloxacin showed highest sensitivity to mastitis causing bacteria followed by Moxifloxacin, Enrofloxacin and Ciprofloxacin. The comparative efficacies in treatment groups were calculated on the basis of improvement in clinical signs, strip cup test and somatic cell count after treatment. Higher efficacy of Marbofloxacin was found (70%) as compared to Moxifloxacin (50%) for treatment of clinical mastitis. Hence, concluded that marbofloxacin could be appropriative antibiotic agent in the treatment of mastitis in buffalo.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"76"},"PeriodicalIF":1.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extended lactation length curves of Holstein and Jersey cattle reared in Brazilian dairy farms.","authors":"Marcos Busanello, Karise Fernanda Nogara, Maity Zopollatto","doi":"10.1007/s11250-025-04318-6","DOIUrl":"https://doi.org/10.1007/s11250-025-04318-6","url":null,"abstract":"<p><p>A lactation length (LL) of 305 days in milk (DIM) does not fully represent the reality of milk yield and a great part of lactations extend beyond that period. This study aimed to compare the parameters of extended lactation curves with the traditional 305 DIM, considering parity orders (PO) in Holstein (HOL) and Jersey (JER) cows. Data were collected from 33,524 cows (31,194 HOL and 2,330 JER) across 544 dairy farms in Paraná, Brazil. Cows were classified by PO (primiparous, secundiparous, and multiparous) and LL, defined based on calving intervals of 11 to 13 months (LL305_D), 13 to 15 months (LL365_D), and 15 to 18 months (LL435_D). Wood's model was used to estimate lactation parameters from a non-linear mixed model. Cows in LL435_D started with a higher milk yield (parameter A) than those in LL305_D, with the greatest differences observed in multiparous HOL (3.3 L/d) and JER cows (2.1 L/d). However, the rate of increase in milk yield until peak (parameter B) was lower in extended lactations, decreasing from ~ 0.24 to ~ 0.19 in HOL and from ~ 0.18 to ~ 0.14 in JER when comparing LL305_D to LL435_D, respectively. Extended lactations (LL365_D and LL435_D) showed greater persistency (lower parameter C) in both breeds, with primiparous cows in LL435_D being the most persistent (HOL = 0.0018, JER = 0.0016). HOL cows had higher initial milk yield and parameter B than JER cows across all POs and LLs. Primiparous HOL cows reached peak milk yield 13 days later in LL435_D compared to LL305_D. Total milk yield in the lactation increased, while daily mean milk yield per lactation day decreased with extended LL. Extended lactations improved milk yield persistency and could enhance cow longevity, efficiency, and lifetime production.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"75"},"PeriodicalIF":1.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Productive and economic performance of cull heifers from different genetic groups fed diets with different sources of non-protein nitrogen in feedlot.","authors":"Manoel Gustavo Paranhos da Silva, Luís Carlos Vinhas Ítavo, Camila Celeste Brandão Ferreira Ítavo, Marina de Nadai Bonin Gomes, Priscilla Dutra Teixeira, Angelo Herbet Moreira Arcanjo, Rodrigo da Costa Gomes","doi":"10.1007/s11250-025-04302-0","DOIUrl":"https://doi.org/10.1007/s11250-025-04302-0","url":null,"abstract":"<p><p>Non-protein nitrogen (NPN) sources can replace true protein sources in ruminant diets. This strategy can reduce production costs and improve the economics and productivity of production systems. We hypothesized that genetic group and non-protein nitrogen sources in the diet would not affect the intake and performance of cull heifers. The objective of this study was to evaluate the effect of genetic group and non-protein nitrogen sources added to the total ration on the productive and economic performance of Angus × Nellore (A × N) and Charolais × Nellore (C × N) cull heifers finished in feedlot. A total of 552 crossbred beef heifers with an initial weight of 374.23 ± 55 kg and 24.0 ± 2 months of age were used. The data were analyzed considering a 2 × 2 factorial scheme (2 genetic groups and 2 diets). The diets had the same protein and energy levels, however, with different sources of non-protein nitrogen (NPN). The first diet (LPU) contained livestock urea and protected urea, while the second diet (EU) contained only extruded urea as a source of NPN. There was no significant interaction between genetic group and diet on nutrient intake and most of the productive performance variables (P > 0.05). However, A × N heifers showed greater dry matter intake (10.33 vs. 9.92 kg/day), average daily gain (1.29 vs. 1.15 kg/day) and heavier carcass (305.73 vs. 279.8 kg) compared to C × N heifers (P < 0.01). Heifers fed the LPU diet had higher final weights (500.04 vs. 488.56 kg), average daily gain (1.31 vs. 1.21 kg) and feed efficiency (0.13 vs. 0.12) (P < 0.01). Greater revenue was observed in A × N heifers (US$ 1,244.30 vs. US$ 1,151.64), which despite the greater total cost (US$ 307.13/animal vs. US$ 295.09), had a greater gross margin (US$ 209.38 vs. US$ 136.09), in relation to C × N heifers (P < 0.05). A × N heifers had greater nutrient intake and were more efficient in feed conversion compared to C × N heifers. The inclusion of fast and slow soluble non-protein nitrogen sources in the diet of beef heifers provides greater performance during finishing in feedlots.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"73"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk association of Lawsonia intracellularis in commercial swine farms.","authors":"Jittra Jinanan, Jasna Bosnjak-Neumüller, Tobias Steiner, Anh Phong Van Nguyen, Tram Ngoc Thi Ngo, Kieu Thi Nguyen, Linh Ngoc My Tran, Ngoc Minh Le, Toa Hoang Le, Hai Van Nguyen, Danh Cong Lai, Keatipong Mongkolwit, Duy Tien Do","doi":"10.1007/s11250-025-04317-7","DOIUrl":"https://doi.org/10.1007/s11250-025-04317-7","url":null,"abstract":"<p><p>Lawsonia intracellularis and Brachyspira species are important enteric pathogens in commercial pig farming. Despite their importance, there is little information on the epidemiology and risk factors of these pathogens in Vietnam. Therefore, this study investigated the percentage of L. intracellularis, B. pilosicoli, and B. hyodysenteriae across 18 commercial pig farms in Vietnam and analyzed risk factors for L. intracellularis infection. Fecal samples were collected from pigs in three age groups, and bacterial DNA was analyzed using quantitative PCR. The study found a 100% percentage of L. intracellularis at the farm level, with 90.74% of individual samples testing positive. B. pilosicoli was detected in 27.78% of farms, while B. hyodysenteriae was not detected in any samples. Risk factor analysis revealed thatpost weaning diarrhea, direct contact between pig batches, and the presence of rats were significantly associated with L. intracellularis infection. Post-weaning frequently experience diarrhea had a 1.8 times higher risk than non-diarrhea, and direct contact between pigs increased infection risk by 10.29 times. The presence of rats also contributed to higher infection rates. These findings emphasize the importance of improved biosecurity, and effective management practices to control the spread of L. intracellularis in Vietnamese pig farms.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"74"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143459592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Castration procedures and feed management in the finishing phase affect the performance, carcass traits, and meat quality of grazing steers.","authors":"Jaqueline Rodrigues Ferreira Cara, Thiago Luis Alves Campos de Araújo, Andrei Pereira Néves, Karla Izidio Latta, Marília Williani Filgueira Pereira, Gilberto Romeiro de Oliveira Menezes, Gelson Luís Dias Feijó, Marina de Nadai Bonin Gomes, Rodrigo da Costa Gomes","doi":"10.1007/s11250-025-04319-5","DOIUrl":"https://doi.org/10.1007/s11250-025-04319-5","url":null,"abstract":"<p><p>The objective of this study was to evaluate the effects of different castration methods, body weights at castration, and feeding management practices on the performance, carcass traits, and meat quality of grazing Nellore steers. 60 male cattle were randomly distributed among the following treatments: surgical castration (SC) at 350 kg body weight (BW) and finished in semiconfinement; immunocastration (ImC) at 350, 400, and 450 kg BW and finished in semiconfinement; and ImC at 450 kg BW and finished receiving protein-energy (P-E) supplementation. All steer production phases were carried out in a grazing system with tropical grass, and only the level of supplementation was varied. The animals were subsequently slaughtered, their carcasses were qualitatively and quantitatively evaluated. The measures of animal performance, carcass traits, composition, and physicochemical quality of aged and unaged meat were considered dependent variables. Immunocastration promoted greater (P < 0.05) average daily weight gains (ADG) postweaning, final BWs postweaning, final BWs at finishing, hot carcass weights, carcass lengths, and internal carcass depths. There was no effect (P > 0.05) of ImC weights on the animal performance variables; however, the ImC weight factor influenced (P < 0.05) carcass conformation and the L* component of aged and unaged meat. Semiconfinement promoted greater (P < 0.05) ADGs, final BWs, hot carcass weights, carcass yields, carcass fattening, rib eye areas, subcutaneous fat thicknesses, and L* components of aged and unaged meat. Immunocastration at 450 kg BW and semiconfinement at the finishing phase is recommended for grazing beef cattle production systems that involve the castration of males.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"71"},"PeriodicalIF":1.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiology and genetic diversity of Theileria equi and Babesia caballi in draft horses in the Distrito Federal, Brazil.","authors":"Thais Alves Fernandes, Patrícia Gonzaga Paulino, Daniele Dos Santos Juliano, Carla Alves Rabello, Nádia Valesca Biral de Oliveira, Matheus de Souza Santana, Maristela Peckle, Carlos Luiz Massard, Isabele da Costa Angelo, Júlio César Ferraz Jacob, Huarrisson Azevedo Santos","doi":"10.1007/s11250-025-04321-x","DOIUrl":"https://doi.org/10.1007/s11250-025-04321-x","url":null,"abstract":"<p><p>Equine piroplasmosis (EP) is a reportable disease according to the World Organization for Animal Health (WOAH), caused by Babesia caballi, Theileria equi and T. haneyi. This syndrome is prevalent in tropical and subtropical regions, including various areas in Brazilian. This study examines EP in the Distrito Federal, Brazil, focusing on prevalence, epidemiological characteristics, and circulating genotypes. Epidemiological data and whole blood samples were collected from horses in the Distrito Federal. DNA was analyzed using qPCR for Theileria sp. and B. caballi, followed by cPCR for 18S rDNA of Theileria sp and rap-1 gene for B. caballi and phylogenetic analysis. Results showed a high EP prevalence (56.23%) among the horses: 49.88% for Theileria sp, 1.47% for B. caballi and 4.89% for both. Phylogenetic analysis indicated genetic similarities with other countries, identifying of T. equi genotypes A and C and B. caballi genotype A. Factors linked to infection, included animals older than five years (p-value = 0.04; OR = 1.71, CI = 1.01-2.87) and health conditions (p-value = 0.049; OR = 1.91, CI = 1.003-3.64) as significantly associated with positivity for Theileria sp. and/or B. caballi. This study contributes to the awareness of the circulation and distribution of T. equi and B. caballi genotypes in Brazil, highlighting the importance of health condition and age as associated factors for infection. These findings deepen our understanding of the need for ongoing surveillance and control measures to manage EP effectively.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"72"},"PeriodicalIF":1.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143450485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of selection signatures and genetic diversity in the sheep.","authors":"Mustafa Karabaş, Onur Yılmaz","doi":"10.1007/s11250-025-04307-9","DOIUrl":"10.1007/s11250-025-04307-9","url":null,"abstract":"<p><p>In the study, data obtained from OvineSNP50K SNP chips using the Illumina® iScan platform for Eşme sheep were used. The integrated haplotype score (iHS) and runs of homozygosity (ROH) statistical approaches were used to identify selection signatures. Using the iHS analysis, it was discovered that there are 10 genomic regions and 51 genes on ovine chromosomes 1, 9, 11, and 12 that are under selection. Three genomic regions and 97 genes on ovine chromosomes 6 and 11 were found to be under selection using the ROH analysis. Candidate genes associated with economic and ecological traits were detected using both approaches. Among the genetic diversity parameters considered in this study, the minor allele frequency (MAF), the genetic distance between individuals (D), as well as observed (Ho) and expected heterozygosities (He) values were 0.300, 0.309, 0.388, and 0.390, respectively. The obtained Ho, He and D values indicate a moderate level of genetic diversity. The ratio of polymorphic SNPs (PN) was 0.947, and the average values of F_ROH and F_HOM were 0.030 and 0.029, respectively. Considering the PN value obtained in the study, it is evident that the SNPs in the population exhibit a high level of polymorphism at 94.7%. While the F_ROH value obtained indicates high genetic diversity among the individuals in the present study, the F_HOM value suggests that the population is predominantly composed of heterozygous individuals. As a result, evidence indicating genetic advancements have been made for target traits in breeding programs within the population. Additionally, candidate genes suitable for future molecular marker-supported breeding programs have been identified. In addition, a better understanding of the genetic structure and production potential of the population has been achieved. Findings have shown that Eşme sheep are a breed with high meat production potential and strong adaptation abilities.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"68"},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11836209/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Resveratrol and antifreeze protein type I show no synergistic benefits in cryopreserved ram sperm.","authors":"Vivian Angélico Pereira Alfradique, Viviane Lopes Brair, Rachel Ferreira Braga, Leonardo Novaes Cajaiba, Andreza Amaral da Silva, Felipe Zandonadi Brandão, Rodolfo Ungerfeld, Joanna Maria Gonçalves Souza-Fabjan","doi":"10.1007/s11250-025-04311-z","DOIUrl":"https://doi.org/10.1007/s11250-025-04311-z","url":null,"abstract":"<p><p>This study investigated the effect of resveratrol (RV) after thawing of ram sperm cryopreserved with or without the addition of antifreeze protein I (AFPI) on sperm quality during the 3 h incubation period. Each ram ejaculate was split into two aliquots, diluted in a TRIS egg yolk (TEY) extender supplemented with 0 (control) or 0.1 µg/mL AFPI, and then cooled and frozen. Thawed samples of both treatments were subdivided and incubated in Talp-Hepes medium with 0 (TEY and AFPI group) or 50 µM of RV (TEY + RV group and AFPI + RV group) for 3 h at 38 ºC. The sperm kinetics, capacitation status, plasma membrane integrity, mitochondrial activity, sperm-egg binding assay, and TBARS concentrations were evaluated at different intervals. Data were analyzed by mixed model, including the incubation time, AFP treatment, RV treatment, and their interactions as main effects, and the day of semen collection and the ram as random effects (P < 0.05; LS mean ± pooled SEM). The AFPI, RV treatments, and their interaction did not affect the average total motility (~ 17.1 ± 2.4%), progressive motility (~ 5.6 ± 1.4%), mitochondrial activity (~ 35.5 ± 2.3 arbitrary unit), plasma membrane integrity (~ 18.2 ± 2.4%), sperm binding capacity (~ 2.2 ± 0.1 sperm per mm²), TBARS concentrations (~ 1488.7 ± 27.4 ng/mL) and rates of capacitated (~ 27.5 ± 1.6%), non-capacitated (~ 20.9 ± 1.6%) and acrosome-reacted (~ 56.5 ± 4.1%) sperm. It was concluded that adding 0.1 µg/mL AFPI to the extender used for ram semen cryopreservation and/or further in vitro culture exposure to 50 µM RV did not improve in vitro sperm quality.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"69"},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green propolis extract derived from Mimosa tenuiflora as an additive in the diet of sheep.","authors":"Natalia Ingrid Souto da Silva, Thiago Luís Alves Campos de Araújo, Salenilda Soares Firmino, Mateus Rodrigues Oliveira, Barbara Pinheiro de Sousa, Raiane Mikaeli Nunes da Costa, Michelly Fernandes Macedo, Ana Cecília Dantas Mendes, Marília Williane Filgueira Pereira, José Gustavo Lima de Almeida, Patrícia de Oliveira Lima, Dorgival Morais de Lima Júnior","doi":"10.1007/s11250-025-04301-1","DOIUrl":"https://doi.org/10.1007/s11250-025-04301-1","url":null,"abstract":"<p><p>This study aimed to evaluate the effect of increasing doses (0, 6, 12, 18, and 24 mL/day) of green propolis extract (GPE) on intake, apparent digestibility, ingestive behavior, water balance, ruminal parameters, hematology, serum biochemistry, and nitrogen balance in feedlot sheep. We used five castrated male sheep, ½ Dorper x ½ Santa Inês, with a mean age of 26 months and weight of 47.94 ± 4.73 kg. The increase in GPE levels did not influence (P > 0.05) the intake and apparent digestibility of dry matter, crude protein, and neutral detergent fiber in sheep. Feeding, rumination, and leisure time were not influenced (P > 0.05) by the increase in the GPE supplied to sheep. The pH (6.14 ± 0.25) and ruminal ammonia nitrogen (8.27 mg/dL) values were also not influenced (P > 0.05) by increasing doses of GPE. The water absorbed and nitrogen retained by the sheep were also not influenced (P > 0.05) by the increase in the GPE supplied. Serum biochemistry was not influenced (P > 0.05). However, the concentrations of eosinophils and monocytes were altered (P < 0.05) by the supply of GPE to sheep. The supply of up to 24 mL/day of GPE does not interfere with intake, apparent digestibility, ingestive behavior, water balance, and nitrogen balance of feedlot sheep. Still, it influences the immune response and liver activity of animals.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"67"},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of kudzu vine (Pueraria lobata) on the intestinal microflora and volatile fatty acids in meat rabbits.","authors":"Chengfang Gao, Lei Sang, Shikun Sun, Dongjin Chen, Jinxiang Wang, Xiping Xie","doi":"10.1007/s11250-025-04313-x","DOIUrl":"10.1007/s11250-025-04313-x","url":null,"abstract":"<p><p>Adding flavonoid-rich kudzu vine (Pueraria lobata) meal to animal feed can improve intestinal microflora. Here, we investigated the effects of kudzu vine meal on the growth performance, caecal microbial diversity, caecal microbial number, intestinal pH, and volatile fatty acids (VFAs) of meat rabbits. Two hundred weaned Ira rabbits were randomly divided into four groups and fifty rabbits in each group. Meat rabbits in the control group (group A) were fed a basal diet without kudzu vine meal; those in the three test groups were fed experimental diets comprising 15% (group B), 25% (group C), and 35% (group D) kudzu vine meal. The results showed that the daily feed intake and mortality of meat rabbits decreased significantly after adding kudzu vine meal to their diet. The feed-to-gain ratio and mortality rate in 35% kudzu vine dietary were 3.5 and 7.5%, respectively, significantly lower than those in the control group. The Shannon and Chao 1 index of the bacterial diversity decreased significantly after adding kudzu vine meal to their diet. With the increasing amount of kudzu vine meal, the variety of dominant phyla did not change, but the relative abundance increased with the increase of kudzu vine addition. The intestinal total VFAs, acetic acid and propionic acid were the highest in 15% kudzu vine dietary, and significantly higher than those of 25% kudzu vine dietary. The content of total bacteria in 35% kudzu vine dietary was the lowest and the Escherichia coli and Salmonella showed a decreasing trend. In conclusion, our study confirms the adding kudzu vine meal significantly decreased the mortality rates and feed-to-gain ratio of meat rabbits, and fed diets with 25%-35% kudzu vine meal are recommended to achieve optimal results in meat rabbits.</p>","PeriodicalId":23329,"journal":{"name":"Tropical animal health and production","volume":"57 2","pages":"70"},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11836158/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}