Pub Date : 2023-10-24DOI: 10.3389/fanim.2023.1298390
Aemiro K. Ashagrie, Fekede Feyissa, Gezahegn Kebede, Mulisa Faji, Kedir Mohammed, Gezahegn Mengistu, Getu Kitaw, Mesfin Dejene, Diriba Geleti, Muluneh Minta, Esteban F. Rios, Mulubrhan Balehegn, Adegbola T. Adesogan
In the published article, there was an error in the Funding statement. [This work was fully or partly funded by the Bill & Melinda Gates Foundation through the Equip-Strengthening Smallholder Livestock Systems for the Future Project (SUBAWARD agreement no. UFDSP00012156 between UF and EIAR). The assistance obtained from UF, EIAR, Holetta Agricultural Research Center (HARC), feeds and nutrition research staff of HARC, ILRI and participant farmers is highly appreciated]. The correct Funding statement appears below. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
{"title":"Corrigendum: Enhancing dairy productivity through best bet feeding interventions under smallholders in the central highlands of Ethiopia","authors":"Aemiro K. Ashagrie, Fekede Feyissa, Gezahegn Kebede, Mulisa Faji, Kedir Mohammed, Gezahegn Mengistu, Getu Kitaw, Mesfin Dejene, Diriba Geleti, Muluneh Minta, Esteban F. Rios, Mulubrhan Balehegn, Adegbola T. Adesogan","doi":"10.3389/fanim.2023.1298390","DOIUrl":"https://doi.org/10.3389/fanim.2023.1298390","url":null,"abstract":"In the published article, there was an error in the Funding statement. [This work was fully or partly funded by the Bill & Melinda Gates Foundation through the Equip-Strengthening Smallholder Livestock Systems for the Future Project (SUBAWARD agreement no. UFDSP00012156 between UF and EIAR). The assistance obtained from UF, EIAR, Holetta Agricultural Research Center (HARC), feeds and nutrition research staff of HARC, ILRI and participant farmers is highly appreciated]. The correct Funding statement appears below. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135315707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-16DOI: 10.3389/fanim.2023.1284368
Thiruvenkadan Aranganoor Kannan, Tanveer Hussain, L. Avendaño-Reyes, R. Ramanujam
{"title":"Editorial: Buffalo (swamp and riverine) production for meat and milk","authors":"Thiruvenkadan Aranganoor Kannan, Tanveer Hussain, L. Avendaño-Reyes, R. Ramanujam","doi":"10.3389/fanim.2023.1284368","DOIUrl":"https://doi.org/10.3389/fanim.2023.1284368","url":null,"abstract":"","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139318659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.3389/fanim.2023.1270550
Madison T. Henniger, Troy N. Rowan, Jonathan E. Beever, Pierre-Yves Mulon, Joe S. Smith, Brynn H. Voy, Jim E. Wells, Larry A. Kuehn, Phillip R. Myer
The rumen microbiome provides approximately 70% of the required energy for the host by converting low-quality feedstuffs into usable energy for ruminants. The energy produced by the microorganisms is subsequently absorbed through the rumen epithelium and used towards growth and energy maintenance. There is evidence that ruminal epimural microbes directly interact with the rumen epithelium, acting as an intermediary communicator between the rumen liquid fraction and the host. Epimural microbiota have been demonstrated to be distinct from the ruminal liquid microbiome and perform unique roles within the rumen environment. However, methods to sample epimural communities from the rumen wall are limited and typically invasive, requiring animal fistulation or harvesting. To characterize the epimural communities present on the rumen wall, a novel and minimally-invasive surgical method was developed to swab the epithelium of the ventral sac of the rumen. The objective of this study was to validate this sampling method by comparing epimural and liquid fraction bacterial communities. During a 70-day feeding trial, Angus steers ( n = 45) were sampled on day 35 using the novel surgery method and tubed on day 70 to sample rumen liquid content. Genomic DNA was used to generate amplicon libraries of the V4 region of the 16S rRNA gene. There were no differences between alpha diversity indices when comparing rumen versus epimural bacterial communities ( P > 0.05). The Bray-Curtis dissimilarity was used to ordinate ASV counts, and then tested for differences between rumen and epimural communities using a PERMANOVA with 999 permutations ( P < 0.05). Differential abundances of bacterial communities were tested using ANCOM-BC and MaAsLin2, where significance was determined by Q < 0.05 and overlap between both analysis methods. Within the 91 taxa that differed in abundance, 451 ASVs were found to be different between sample types ( Q < 0.05). Unique ASVs associated with Prevotella , Succinivibrio , family-level Eubacterium , and family-level Succinivibrio were in greater abundance for the rumen epithelial-associated bacterial communities ( Q < 0.05). The results demonstrate that the novel method of sampling from the rumen wall can capture differences between epimural and ruminal fluid bacterial communities, thus facilitating studies investigating the interactions between epimural bacteria with the host.
{"title":"Validation of a minimally-invasive method for sampling epithelial-associated microorganisms on the rumen wall","authors":"Madison T. Henniger, Troy N. Rowan, Jonathan E. Beever, Pierre-Yves Mulon, Joe S. Smith, Brynn H. Voy, Jim E. Wells, Larry A. Kuehn, Phillip R. Myer","doi":"10.3389/fanim.2023.1270550","DOIUrl":"https://doi.org/10.3389/fanim.2023.1270550","url":null,"abstract":"The rumen microbiome provides approximately 70% of the required energy for the host by converting low-quality feedstuffs into usable energy for ruminants. The energy produced by the microorganisms is subsequently absorbed through the rumen epithelium and used towards growth and energy maintenance. There is evidence that ruminal epimural microbes directly interact with the rumen epithelium, acting as an intermediary communicator between the rumen liquid fraction and the host. Epimural microbiota have been demonstrated to be distinct from the ruminal liquid microbiome and perform unique roles within the rumen environment. However, methods to sample epimural communities from the rumen wall are limited and typically invasive, requiring animal fistulation or harvesting. To characterize the epimural communities present on the rumen wall, a novel and minimally-invasive surgical method was developed to swab the epithelium of the ventral sac of the rumen. The objective of this study was to validate this sampling method by comparing epimural and liquid fraction bacterial communities. During a 70-day feeding trial, Angus steers ( n = 45) were sampled on day 35 using the novel surgery method and tubed on day 70 to sample rumen liquid content. Genomic DNA was used to generate amplicon libraries of the V4 region of the 16S rRNA gene. There were no differences between alpha diversity indices when comparing rumen versus epimural bacterial communities ( P &gt; 0.05). The Bray-Curtis dissimilarity was used to ordinate ASV counts, and then tested for differences between rumen and epimural communities using a PERMANOVA with 999 permutations ( P &lt; 0.05). Differential abundances of bacterial communities were tested using ANCOM-BC and MaAsLin2, where significance was determined by Q &lt; 0.05 and overlap between both analysis methods. Within the 91 taxa that differed in abundance, 451 ASVs were found to be different between sample types ( Q &lt; 0.05). Unique ASVs associated with Prevotella , Succinivibrio , family-level Eubacterium , and family-level Succinivibrio were in greater abundance for the rumen epithelial-associated bacterial communities ( Q &lt; 0.05). The results demonstrate that the novel method of sampling from the rumen wall can capture differences between epimural and ruminal fluid bacterial communities, thus facilitating studies investigating the interactions between epimural bacteria with the host.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135858007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-12DOI: 10.3389/fanim.2023.1195710
Edwin Louis-Maerten
Animal breeding is a mainstay of our relationship with domesticated species. However, it is sometimes leading to serious health and welfare issues, such as canine brachycephaly or double-muscling phenotype in Belgian Blue cattle. How then can we re-think our breeding system in animals? In this paper, I discuss the ethics of domestic animal breeding and new ways to achieve it. In doing so, I focus primarily on the concept of eugenics and its two major accounts: authoritarian and liberal eugenics. Indeed, the debates surrounding eugenics in humans is a quite prolific framework to question how we can justify animal breeding and has the merits to clarify the conditions needed to consider some practices as morally wrong ( e.g. in the case of authoritarian eugenics). I argue that pure-bred breeding is comparable in many ways with authoritarian eugenics primarily because it does not consider the benefits for the animals but external factors such as beauty, productivity or certain behaviors. But arguing so raises the question whether this renders all types of animal breeding unethical. I refute this conclusion and give some arguments to support an active use of more ethical kinds of breeding systems. Specifically, I explore the concept of liberal eugenics and its limitations to defend a breeding practice that is both liberal and responsible. Such new standards can warrant a focus on animal welfare and put forward the central role of breeders in this process.
{"title":"Exploring animal breeding through the lenses of authoritarian and liberal eugenics: why some breeding practices are wrong and what could be new ethical standards?","authors":"Edwin Louis-Maerten","doi":"10.3389/fanim.2023.1195710","DOIUrl":"https://doi.org/10.3389/fanim.2023.1195710","url":null,"abstract":"Animal breeding is a mainstay of our relationship with domesticated species. However, it is sometimes leading to serious health and welfare issues, such as canine brachycephaly or double-muscling phenotype in Belgian Blue cattle. How then can we re-think our breeding system in animals? In this paper, I discuss the ethics of domestic animal breeding and new ways to achieve it. In doing so, I focus primarily on the concept of eugenics and its two major accounts: authoritarian and liberal eugenics. Indeed, the debates surrounding eugenics in humans is a quite prolific framework to question how we can justify animal breeding and has the merits to clarify the conditions needed to consider some practices as morally wrong ( e.g. in the case of authoritarian eugenics). I argue that pure-bred breeding is comparable in many ways with authoritarian eugenics primarily because it does not consider the benefits for the animals but external factors such as beauty, productivity or certain behaviors. But arguing so raises the question whether this renders all types of animal breeding unethical. I refute this conclusion and give some arguments to support an active use of more ethical kinds of breeding systems. Specifically, I explore the concept of liberal eugenics and its limitations to defend a breeding practice that is both liberal and responsible. Such new standards can warrant a focus on animal welfare and put forward the central role of breeders in this process.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135968884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-11DOI: 10.3389/fanim.2023.1108012
Prince Sasu, Victoria Attoh-Kotoku, Antoinette S. Anim-Jnr, Michael Kwaku, Benjamin Adjei-Mensah, Obed Adjei, Frank Kweku Mintah
Introduction The selection of appropriate plant species, particularly those tailored to supplement ruminants raised under agrosilvopastoral systems, remains a persistent challenge. Objective In a 30-day study, the feed intake, growth performance, and manure characteristics of West African dwarf (WAD) goats fed bamboo leaf supplement were evaluated. Materials and methods A total of 30 animals with an average weight of 9.9 ± 0.21 kg were divided into a control group, and four bamboo-supplemented groups, following a 2 x 2 factorial arrangement within a completely randomized design. Each group had six animal replicates and received the following dietary treatments: T1 (control) – 400g of basal diet composed of 60% Megathyrsus maximus and 40% Bridelia ferruginea leaves per day; T2—basal diet composed of the T1 diet supplemented with 400 g of Oxytenanthera abyssinica (A. Rich.) Munro leaves per day; T3—basal diet composed of the T1 diet supplemented with 400 g of Bambusa balcooa (Beema) leaves per day; T4—basal diet composed of the T1 diet supplemented with 600 g of O. abyssinica (A. Rich.) leaves per day; and T5—basal diet composed of the T1 diet supplemented with 600 g of B. balcooa leaves per day. The data were analyzed using generalized linear model procedures in Minitab Statistical Software at a 5% significance level. Results The results showed varied (p < 0.05) dry matter compositions spanning from 894.3 to 910 g/kg with the highest contents of crude protein (194 g/kg), nitrogen (31 g/kg), crude fibre (302 g/kg), ash (156 g/kg), acid detergent fibre (429 g/kg), and acid detergent lignin (3.6 g/kg) recorded for B. ferruginea. The leaves of Bambusa balcooa contained the highest neutral detergent fibre (481 g/kg) while M. maximus had the highest organic matter content (911 g/kg). Significant interaction effect (p < 0.05) was observed between the supplement type and the supplementation level, impacting various parameters including feed intake ranging from 398 g (T1) to 469 g (T3) per day, weight gain from 27 g (T1) to 72 g (T2) per day, feed conversion efficiency from 6% (T1) to 15% (T2), manure output from 241 g (T2) to 260 g (T5) per day, carbon- nitrogen (C: N) ratio from 9 (T2) to 20 (T5), faecal acidity levels from 4 (T1) to 5 (T4). Comparatively, higher daily dry matter intake was recorded for the animal groups fed the B. balcooa supplement than their counterparts fed the O. abyssinica supplement. However, the O. abyssinica supplemented groups were more efficient in converting feed to body weight, with feed conversion efficiency approximately 9% higher than the B. balcooa-supplemented groups. Furthermore, in general, the animal groups that received a daily supplement of 400 g gave higher feed efficiency, with performance approximately 3.2% higher compared to the groups receiving 600 g. Likewise, these groups displayed higher faecal N output while concurrently achieving a reduced C: N ratio, indicative of enhanced nutrient utilizat
选择合适的植物物种，特别是那些适合补充在农林复合系统下饲养的反刍动物的植物物种，仍然是一个持续的挑战。目的通过为期30 d的试验，对添加竹叶的西非矮山羊采食量、生长性能和粪便特性进行评价。材料与方法选用平均体重为9.9±0.21 kg的30只试验动物，采用2 × 2因子全随机设计，分为对照组和4个竹材添加组。每组设6个重复，采用以下饲粮处理:T1(对照)—400g基础饲粮，基础饲粮中添加60%大菱鲆和40%铁血桥耳草叶片;t2 -基础饲粮，由T1饲粮中添加400 g深海氧南花组成。每天门罗叶子;t3 -基础饲粮，由T1饲粮中添加400 g /天的豆叶组成;t4 -基础饲粮，由T1饲粮中添加600 g / d的深草叶组成;t5基础饲粮，在基础饲粮中添加600 g /天的balcoba叶片。数据在Minitab统计软件中采用广义线性模型程序进行分析，显著性水平为5%。结果结果显示:(p <0.05)干物质组成为894.3 ~ 910 g/kg，粗蛋白质(194 g/kg)、氮(31 g/kg)、粗纤维(302 g/kg)、灰分(156 g/kg)、酸性洗涤纤维(429 g/kg)和酸性洗涤木质素(3.6 g/kg)含量最高。竹叶中中性洗涤纤维含量最高(481 g/kg)，竹叶中有机质含量最高(911 g/kg)。显著的相互作用效应(p <0.05)观察之间的补充类型和补充水平,影响各种参数包括投料从398克(T1)每天469克(T3),体重从27 g (T1)每天72克(T2),饲料转化效率从6% (T1) 15% (T2)、肥料产量241 g (T2) (T5)每天260克、碳-氮(C: N)比从9 (T2) 20 (T5),粪便酸度水平4 (T1) 5 (T4)。相比之下，饲喂白僵菌的动物组的日干物质采食量高于饲喂深海藻的动物组。然而，深海棘球藻添加组饲料转化为体重的效率更高，饲料转化效率比深海棘球藻添加组高约9%。此外，总的来说，每天添加400 g的动物组的饲料效率更高，其生产性能比每天添加600 g的动物组高约3.2%。同样，这些组的粪便氮排泄量较高，同时碳氮比降低，表明养分利用率提高和潜在的环境效益。综上所述，在动物日粮中添加400 g竹叶可增加动物基础日粮消耗，加速动物生长，并产生类似化肥的粪便，对竹林复合农牧系统从业者具有重要价值。
{"title":"Toward smallholder bamboo-integrated agro-silvopastoral systems in sub-Saharan Africa: assessing the impact of bamboo leaves on consumption pattern, growth performance and manure characteristics of West African dwarf goats","authors":"Prince Sasu, Victoria Attoh-Kotoku, Antoinette S. Anim-Jnr, Michael Kwaku, Benjamin Adjei-Mensah, Obed Adjei, Frank Kweku Mintah","doi":"10.3389/fanim.2023.1108012","DOIUrl":"https://doi.org/10.3389/fanim.2023.1108012","url":null,"abstract":"Introduction The selection of appropriate plant species, particularly those tailored to supplement ruminants raised under agrosilvopastoral systems, remains a persistent challenge. Objective In a 30-day study, the feed intake, growth performance, and manure characteristics of West African dwarf (WAD) goats fed bamboo leaf supplement were evaluated. Materials and methods A total of 30 animals with an average weight of 9.9 ± 0.21 kg were divided into a control group, and four bamboo-supplemented groups, following a 2 x 2 factorial arrangement within a completely randomized design. Each group had six animal replicates and received the following dietary treatments: T1 (control) – 400g of basal diet composed of 60% Megathyrsus maximus and 40% Bridelia ferruginea leaves per day; T2—basal diet composed of the T1 diet supplemented with 400 g of Oxytenanthera abyssinica (A. Rich.) Munro leaves per day; T3—basal diet composed of the T1 diet supplemented with 400 g of Bambusa balcooa (Beema) leaves per day; T4—basal diet composed of the T1 diet supplemented with 600 g of O. abyssinica (A. Rich.) leaves per day; and T5—basal diet composed of the T1 diet supplemented with 600 g of B. balcooa leaves per day. The data were analyzed using generalized linear model procedures in Minitab Statistical Software at a 5% significance level. Results The results showed varied (p &lt; 0.05) dry matter compositions spanning from 894.3 to 910 g/kg with the highest contents of crude protein (194 g/kg), nitrogen (31 g/kg), crude fibre (302 g/kg), ash (156 g/kg), acid detergent fibre (429 g/kg), and acid detergent lignin (3.6 g/kg) recorded for B. ferruginea. The leaves of Bambusa balcooa contained the highest neutral detergent fibre (481 g/kg) while M. maximus had the highest organic matter content (911 g/kg). Significant interaction effect (p &lt; 0.05) was observed between the supplement type and the supplementation level, impacting various parameters including feed intake ranging from 398 g (T1) to 469 g (T3) per day, weight gain from 27 g (T1) to 72 g (T2) per day, feed conversion efficiency from 6% (T1) to 15% (T2), manure output from 241 g (T2) to 260 g (T5) per day, carbon- nitrogen (C: N) ratio from 9 (T2) to 20 (T5), faecal acidity levels from 4 (T1) to 5 (T4). Comparatively, higher daily dry matter intake was recorded for the animal groups fed the B. balcooa supplement than their counterparts fed the O. abyssinica supplement. However, the O. abyssinica supplemented groups were more efficient in converting feed to body weight, with feed conversion efficiency approximately 9% higher than the B. balcooa-supplemented groups. Furthermore, in general, the animal groups that received a daily supplement of 400 g gave higher feed efficiency, with performance approximately 3.2% higher compared to the groups receiving 600 g. Likewise, these groups displayed higher faecal N output while concurrently achieving a reduced C: N ratio, indicative of enhanced nutrient utilizat","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136210490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-10DOI: 10.3389/fanim.2023.1270230
Maurizio Dioli, Mostafa Nasef, Bruce James Braithwaite, Umar Rehman
The camel ( Camelus dromedarius ) holds significant importance as a valuable livestock species for milk production. Consequently, there is an increasing need to enhance attitudes toward increasing camel milk production by selectively breeding camels with desirable milk production attributes. The Majaheem camels have gained recognition for their favorable milk production traits. However, there is currently a lack of rational and modern tools to aid in the evaluation of Majaheem camels, specifically in terms of their milk production capabilities. To address this deficiency and provide guidance to camel breeders for the effective evaluation and selection of superior milk-producing Majaheem camels, a breed linear scorecard is proposed in line with that adopted for Holstein–Friesian milking cattle. However, the scorecard has been simplified and adapted to the phenotypic characteristics of the Majaheem camel breed.
{"title":"A proposed simplified scorecard for the linear descriptive evaluation of dairy characters of female camels (Camelus dromedarius) of the Majaheem breed","authors":"Maurizio Dioli, Mostafa Nasef, Bruce James Braithwaite, Umar Rehman","doi":"10.3389/fanim.2023.1270230","DOIUrl":"https://doi.org/10.3389/fanim.2023.1270230","url":null,"abstract":"The camel ( Camelus dromedarius ) holds significant importance as a valuable livestock species for milk production. Consequently, there is an increasing need to enhance attitudes toward increasing camel milk production by selectively breeding camels with desirable milk production attributes. The Majaheem camels have gained recognition for their favorable milk production traits. However, there is currently a lack of rational and modern tools to aid in the evaluation of Majaheem camels, specifically in terms of their milk production capabilities. To address this deficiency and provide guidance to camel breeders for the effective evaluation and selection of superior milk-producing Majaheem camels, a breed linear scorecard is proposed in line with that adopted for Holstein–Friesian milking cattle. However, the scorecard has been simplified and adapted to the phenotypic characteristics of the Majaheem camel breed.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136296366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-06DOI: 10.3389/fanim.2023.1271202
Stacey B. Leach, Stephanie D. Clark, Ryan D. Baumwart, Sydney R. McCauley, Justin D. Thomason, Renee M. Streeter, Charles A. Zumbaugh, Ken Lamb, Bradley W. Quest
Introduction Diet-associated dilated cardiomyopathy (DCM) has been suspected in breeds that have not been previously noted to have a predisposition to the DCM phenotype. This study hypothesized that over 210 days, dogs fed diets with varying amounts of animal-sourced protein and carbohydrate sources would not be negatively impacted in terms of their cardiac parameters and function. Methods Thirty-two purebred beagles and 33 mixed-breed hounds were randomized into four diet groups and studied for 210 days. The diet groups were as follows: the high-animal-protein grain-free (HAGF) group, the low-animal-protein grain-free (LAGF) group, the high-animal-protein grain-inclusive (HAGI), and the low-animal-protein grain-inclusive (LAGI) group. Cardiac-specific biomarkers, endomyocardial biopsies, and linear and volumetric echocardiographic parameters were evaluated. Results There was a treatment-by-day-by-breed effect observed for the normalized left ventricular internal diameter at end-diastole ( p = 0.0387) and for the normalized left ventricular internal diameter at end-systole ( p = 0.0178). On day 210, mixed-breed hounds fed the LAGI diet had a smaller normalized left ventricular internal diameter at end-diastole than on day 90. On day 210, beagles fed the LAGF diet had a larger normalized left ventricular internal diameter at end-systole than those fed the LAGI diet. Fractional shortening for beagles in the LAGF group was significantly lower ( p = 0.007) than for those in the HAGI and LAGI groups. Cardiac-specific biomarkers and endomyocardial biopsies were not significantly different between breeds, diets, and various time points. Discussion This study did not detect the development of cardiac dysfunction throughout the study period through the echocardiographic parameters measured, select cardiac biomarkers, or endomyocardial biopsies. There were noted interactions of treatment, breed, and time; therefore, isolating a diet association was not possible. Future research should further investigate the other factors that may help to identify the variable(s) and possible mechanisms underlying suspected diet-associated DCM in dogs.
{"title":"Prospective evaluation of echocardiographic parameters and cardiac biomarkers in healthy dogs eating four custom-formulated diets","authors":"Stacey B. Leach, Stephanie D. Clark, Ryan D. Baumwart, Sydney R. McCauley, Justin D. Thomason, Renee M. Streeter, Charles A. Zumbaugh, Ken Lamb, Bradley W. Quest","doi":"10.3389/fanim.2023.1271202","DOIUrl":"https://doi.org/10.3389/fanim.2023.1271202","url":null,"abstract":"Introduction Diet-associated dilated cardiomyopathy (DCM) has been suspected in breeds that have not been previously noted to have a predisposition to the DCM phenotype. This study hypothesized that over 210 days, dogs fed diets with varying amounts of animal-sourced protein and carbohydrate sources would not be negatively impacted in terms of their cardiac parameters and function. Methods Thirty-two purebred beagles and 33 mixed-breed hounds were randomized into four diet groups and studied for 210 days. The diet groups were as follows: the high-animal-protein grain-free (HAGF) group, the low-animal-protein grain-free (LAGF) group, the high-animal-protein grain-inclusive (HAGI), and the low-animal-protein grain-inclusive (LAGI) group. Cardiac-specific biomarkers, endomyocardial biopsies, and linear and volumetric echocardiographic parameters were evaluated. Results There was a treatment-by-day-by-breed effect observed for the normalized left ventricular internal diameter at end-diastole ( p = 0.0387) and for the normalized left ventricular internal diameter at end-systole ( p = 0.0178). On day 210, mixed-breed hounds fed the LAGI diet had a smaller normalized left ventricular internal diameter at end-diastole than on day 90. On day 210, beagles fed the LAGF diet had a larger normalized left ventricular internal diameter at end-systole than those fed the LAGI diet. Fractional shortening for beagles in the LAGF group was significantly lower ( p = 0.007) than for those in the HAGI and LAGI groups. Cardiac-specific biomarkers and endomyocardial biopsies were not significantly different between breeds, diets, and various time points. Discussion This study did not detect the development of cardiac dysfunction throughout the study period through the echocardiographic parameters measured, select cardiac biomarkers, or endomyocardial biopsies. There were noted interactions of treatment, breed, and time; therefore, isolating a diet association was not possible. Future research should further investigate the other factors that may help to identify the variable(s) and possible mechanisms underlying suspected diet-associated DCM in dogs.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135350958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.3389/fanim.2023.1289659
Jean-Loup Rault, Ruth C. Newberry, Manja Zupan Šemrov
{"title":"Editorial: Positive welfare: from concept to implementation","authors":"Jean-Loup Rault, Ruth C. Newberry, Manja Zupan Šemrov","doi":"10.3389/fanim.2023.1289659","DOIUrl":"https://doi.org/10.3389/fanim.2023.1289659","url":null,"abstract":"","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139322746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nutritional and bioactive compounds present in seaweeds make them suitable supplements or feed ingredients in livestock diets. This study assessed the effect of blanched seaweed ( Saccharina latissima ) as a supplement in finishing bulls’ diets on carcass traits and the quality of the longissimus lumborum (LL) and semimembranosus (SM) muscles. A concentration of 0.8% dry matter of blanched S. latissima in bulls’ diets was the maximum amount allowed, owing to iodine and arsenic thresholds in animal feed. Nineteen Limousin crossbreed bulls were randomly assigned to two groups, fed a control (CD, n = 9) diet or a test diet supplemented with blanched seaweed (SW, n = 10), and fed for 48 days pre slaughter. The carcasses from the bulls finished on a seaweed-supplemented diet were heavier ( p < 0.05) than those in the control group, while levels of conformation and fatness were similar between the groups ( p > 0.05). The pH was lower ( p < 0.05) in the LL of CD-fed animals in early post mortem than in the LL of SW-fed animals, whereas no differences ( p > 0.05) were found in the ultimate pH. The meat from the bulls fed both diets had a similar ( p > 0.05) drip loss and shear force at days 7 and 14. The cooking loss at day 7 was not affected ( p > 0.05) by diet, whereas on day 14 the cooking loss was greater ( p < 0.05) for SW than for CD meat. Warmed-over flavor and shear force were muscle dependent and lower ( p < 0.05) for LL than SM. Seaweed supplementation in finishing bulls’ diets had no clear effect on color changes ( L *, a *, and b * values) during chilled storage, although reduced b * values ( p < 0.05) suggest an improved color stability of meat from SW- compared with CD-fed animals. The iodine content was higher ( p < 0.05) in the SW meat than in the CD meat, even when using the low seaweed supplementation level requested by the authorities. A small increase of arsenic in the meat with seaweed supplementation has no implications on human health. Cost-efficient processing methods for the further reduction of iodine and arsenic are needed to increase the utilization of seaweed as a feed additive/ingredient and attain a clear effect on meat quality.
{"title":"Effect of low-dose blanched Saccharina latissima in finishing bulls’ diets on carcass and meat quality traits","authors":"Vladana Grabež, Liv Torunn Mydland, Dimitrios Papoutsis, Margareth Øverland, Bjørg Egelandsdal","doi":"10.3389/fanim.2023.1233244","DOIUrl":"https://doi.org/10.3389/fanim.2023.1233244","url":null,"abstract":"Nutritional and bioactive compounds present in seaweeds make them suitable supplements or feed ingredients in livestock diets. This study assessed the effect of blanched seaweed ( Saccharina latissima ) as a supplement in finishing bulls’ diets on carcass traits and the quality of the longissimus lumborum (LL) and semimembranosus (SM) muscles. A concentration of 0.8% dry matter of blanched S. latissima in bulls’ diets was the maximum amount allowed, owing to iodine and arsenic thresholds in animal feed. Nineteen Limousin crossbreed bulls were randomly assigned to two groups, fed a control (CD, n = 9) diet or a test diet supplemented with blanched seaweed (SW, n = 10), and fed for 48 days pre slaughter. The carcasses from the bulls finished on a seaweed-supplemented diet were heavier ( p &lt; 0.05) than those in the control group, while levels of conformation and fatness were similar between the groups ( p &gt; 0.05). The pH was lower ( p &lt; 0.05) in the LL of CD-fed animals in early post mortem than in the LL of SW-fed animals, whereas no differences ( p &gt; 0.05) were found in the ultimate pH. The meat from the bulls fed both diets had a similar ( p &gt; 0.05) drip loss and shear force at days 7 and 14. The cooking loss at day 7 was not affected ( p &gt; 0.05) by diet, whereas on day 14 the cooking loss was greater ( p &lt; 0.05) for SW than for CD meat. Warmed-over flavor and shear force were muscle dependent and lower ( p &lt; 0.05) for LL than SM. Seaweed supplementation in finishing bulls’ diets had no clear effect on color changes ( L *, a *, and b * values) during chilled storage, although reduced b * values ( p &lt; 0.05) suggest an improved color stability of meat from SW- compared with CD-fed animals. The iodine content was higher ( p &lt; 0.05) in the SW meat than in the CD meat, even when using the low seaweed supplementation level requested by the authorities. A small increase of arsenic in the meat with seaweed supplementation has no implications on human health. Cost-efficient processing methods for the further reduction of iodine and arsenic are needed to increase the utilization of seaweed as a feed additive/ingredient and attain a clear effect on meat quality.","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135194181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-26DOI: 10.3389/fanim.2023.1288239
V. S. Chowdhury, D. Renaudeau, Takashi Bungo
{"title":"Editorial: Animal responses to climatic stress: strategies for coping with harsh climatic conditions","authors":"V. S. Chowdhury, D. Renaudeau, Takashi Bungo","doi":"10.3389/fanim.2023.1288239","DOIUrl":"https://doi.org/10.3389/fanim.2023.1288239","url":null,"abstract":"","PeriodicalId":73064,"journal":{"name":"Frontiers in animal science","volume":"163 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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