Amy K. McLean

A functional approach to the body condition assessment of lactating donkeys as a tool for welfare evaluation

Background The breeding of lactating donkeys is increasing in Western Europe; with it the evaluation of body condition is growing in importance since it is considered a key principle for their welfare. However, assessment of body condition is a complex task, since several factors are involved. The aim of the present study is to investigate which animal-based indicators are the most reliable to describe the body condition of lactating donkeys. For this purpose, new animal-based indicators, which are easy to measure in field conditions (including body measurements, fatty neck score (FNS), dental score), are recorded and their relationship with BCS (a proxy measure for overall adiposity) was assessed. The ones that reveal an association with the BCS are included in an integrated principal component analysis to understand which are the most related to BCS. Methods Fifty-three healthy lactating donkeys of various breeds, including 7 Martina Franca, 10 Ragusano, 2 Romagnolo and 34 crossbreeds, were evaluated. The animal-based indicators that were recorded were: length (OP, olecranon tuber-pinbone and SH, shoulder-hip), heart girth (HG), abdominal circumference (AC), neck length (NL), neck height (NH) and neck thickness (NT) at 0.50 and neck circumference (NC) at 0.25, 0.50 and 0.75, body condition score (BCS) and fatty neck score (FNS). The owners’ evaluation of the BCS was also considered. A dental assessment was performed and the month of lactation and age of each animal was recorded. Results No correlation was found between BCS and the other morphometric body measurements. On the contrary the FNS was correlated with the morphometric measurements of the neck (positive correlation to 0.50 NH and 0.50 NT, 0.50 NC, 0.75 mean NC, and negative correlation to the mean NC:NH and mean NC:NT, 0.50 NC:NT and 0.50 NC:NH ratios). A significant inverse relationship was identified between BCS and dental score. A Principal Component analysis (PCA) separated the BCS classes on the first principal component (PC1). PC1 revealed a meaningful positive correlation between the BCS and the neck measurements (NT, NH and FNS), with high positive loadings, while a negative correlation was found for dental abnormalities. The owners’ evaluation of BCS was different from the expert evaluator’ assessment, since they tended to give higher score that was slightly but significantly correlated to AC. Discussion A new scoring system, called Fatty Neck Score (FNS), has been proposed for the judgement of the adiposity status of donkey neck. The results suggest that caregivers might use the proposed animal based indicators (BCS, FNS and dental scores) together as a tool for the evaluation of the body condition of lactating donkeys. Our findings highlight that caregivers need to be trained in order to be able to properly record these indicators. Ultimately use of these indicators may help to improve the welfare of lactating donkeys.

Can Scientists Influence Donkey Welfare? Historical Perspective and a Contemporary View

&NA; Humans have greatly benefited from their relationship with donkeys. Different roles that donkeys play in high‐ and low‐income countries are two sides of the same coin. Their draft power is indispensable in low‐income countries, and by contrast, their milk in Europe is fetching a premium. New productive niches are controversially being explored, for example, donkey meat and skin (ejiao); both are considered premium products and have increased value of donkeys in many developing regions of the world. New advances in human medicine are starting to consider possibilities of donkey serum and heart valves. Scientists and channels that they use to spread their knowledge directly influence public interest and implementation of welfare practices in domestic species, indirectly affecting their survival. The studys aim was to trace historical registry of www.sciendirect.com directory from 1896 to 2018 to assess trends followed by articles dealing with donkeys. Publications with 22 themes and 114 publications (91 JCR indexed journals) from 56 countries were included. JCR impact index was scored to study influence of publications dealing with donkeys. Chi‐square test tested six variables, randomly influenced by the rest. Cramers V measured strength of association between variables. Statistically significant differences were observed between almost every combination of variables except for year and JCR impact, year and area/topic and country of the corresponding author, and area/topic of submission. JCR impact and journal influences the area of the articles that are published. As some countries are more specialized in certain themes concerning donkey‐related sciences, they are more likely to publish. HighlightsDonkeys defining role and relationship with humans constantly change according to literature.In high and low income countries, donkey use and worth are two sides of the same coin.Motivating factors were the difficulty to publish and the scarcity of published articles on donkeys.We outlined a map of journals to make it easy for authors to decide on where to submit their articles.Some countries are more specialized in certain themes and have higher publication numbers.

Measuring and modeling for the assessment of the genetic background behind cognitive processes in donkeys

New productive niches can offer new commercial perspectives linked to donkeys products and human therapeutic or leisure applications. However, no assessment for selection criteria has been carried out yet. First, we assessed the animal inherent features and environmental factors that may potentially influence several cognitive processes in donkeys. Then, we aimed at describing a practical methodology to quantify such cognitive processes, seeking their inclusion in breeding and conservation programmes, through a multifactorial linear model. Sixteen cognitive process-related traits were scored on a problem-solving test in a sample of 300 Andalusian donkeys for three consecutive years from 2013 to 2015. The linear model assessed the influence and interactions of four environmental factors, sex as an animal-inherent factor, age as a covariable, and the interactions between these factors. Analyses of variance were performed with GLM procedure of SPSS Statistics for Windows, Version 24.0 software to assess the relative importance of each factor. All traits were significantly (P<0.05) affected by all factors in the model except for sex that was not significant for some of the cognitive processes, and stimulus which was not significant (P<0.05) for all of them except for the coping style related ones. The interaction between all factors within the model was non-significant (P<0.05) for almost all cognitive processes. The development of complex multifactorial models to study cognitive processes may counteract the inherent variability in behavior genetics and the estimation and prediction of related breeding parameters, key for the implementation of successful conservation programmes in apparently functionally misplaced endangered breeds.

Observations of the haematological, haematochemical and electrophoretic parameters in lactating donkeys ( Equus Asinus )

&NA; A cross‐sectional study was conducted on 92 female donkeys. Blood samples were collected, and the following parameters were evaluated: red blood cell (RBC), white blood cell, neutrophil, lymphocyte, monocyte (MON), eosinophil (EOS) and basophil counts, hemoglobin concentration, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), and the hematocrit (HCT), alanine aminotransferase (GPT), aspartate aminotransferase, total proteins, &ggr;‐glutamyl‐transferase, alkaline phosphatase, creatinine, urea, and blood urea nitrogen and electrophoretic profile. Age (≥2 years ≤ 3 [very young], >3 years ≤ 10 [young], and >10 years ≤ 17 [adult]) and lactation (early lactation [≤3 months], middle [>3 months ≤ 6], and late lactation [>6 months]). Groups were independently analyzed using one‐way analysis of variance or Kruskal–Wallis (post hoc test: Bonferronis or Dunns multiple test) tests; P was set as <.05. Very young animals had lower EOS than young and adult animals; in addition, they showed the highest MON and RBC and the lowest MCV and GPT; MCHC was lower in adult than that in the very young group; MCH was higher in the adult than that in the very young group; Alpha 2‐globulin values were greater in young than those in very young animals; MCH was higher in the late lactation group than that in early lactation; alpha 1 and alpha 2‐globulins showed a significant increase from the early to the late lactation period. Values reported herein could provide a useful clinical guide and represent a basis for further research into monitoring the health status of lactating donkeys. HighlightsObservations of blood chemistry parameters in lactating donkeys (Equus asinus).Very young donkeys had lower eosinophil, highest monocyte and red blood cell than young and adult.Mean corpuscular hemoglobin (MCH) was higher in adult compared to very young.Alpha 2‐globluin values were greatest in young donkeys compared to very young MCH was highest late lactation, alpha1, 2 globulins increased from early to late.

Reference intervals for hematological and blood biochemistry reference values in healthy mules and hinnies

Little scientific information is known regarding mules and even less is known about hinnies. Due to increased popularity of both as recreational animals which are still commonly found as working equids, there is a need for such basic information for practitioners and owners. The purpose of this study was to begin to establish reference ranges for hematological and biochemical parameters of clinically healthy mules and hinnies compared to those of their sires and dams (horses and donkeys of similar genotype, phenotype within species) used for hybrid offspring production. Such information will contribute to our understanding and attempts to improve management and disease diagnosis of hinnies and mules. Eighty-one healthy equids (nu2009=u200930 hinnies, 20 mules, 20 donkeys, and 11 horses) were sampled. Clinical data recorded age, gender, BCS, and temperature. Two 10-mL blood samples were collected by venipuncture of the jugular vein, using “vacutainer” plain and EDTA tubes. These samples were analyzed for RBC, PCV, Hb, WBC, platelets, proteins, fatty acids, electrolytes, enzymes, and glucose. Average and standard deviations were calculated. Kruskal-Wallis test was used to test the significant value. Findings were considered to be significant if Pu2009≤u20090.05. When comparing all parameters among four groups of equids, differences were found for temperature, red blood cell lines, white blood cell lines, electrolytes, and enzymes. Differences in mules and hinnies were seen in RBC, WBC, magnesium, bilirubin, creatinine, and AST. The results are constricted to very few known populations of equid hybrids with similar genetics. In this study, hinnies and mules showed results that were closer to those of horses than those of donkeys. Some differences recorded in hinnies may be related to age: RBC, WBC, MCH, MCV, eosinophils, magnesium, total bilirubin, creatinine, and AST. Findings may help establish new, relevant hematological and biochemical parameters which may prevent medical misdiagnosis. Additional research is needed with larger populations of healthy mules and hinnies.

Genetic parameter estimation and implementation of the genetic evaluation for gaits in a breeding program for assisted-therapy in donkeys.

Genetic analyses in donkeys are likely to face compromises in terms of sample size and population structure. This study aims at implementing a suitable model to estimate breeding values and genetic parameters for gaits in Andalusian donkeys. Empirical observation revealed that ambling donkeys (showing a slightly uneven, non-isochronous 1–2, 3–4 lateral sequence gait) did not walk (i.e. presented an isochronous, even 1-2-3-4 sequence gait) and vice versa. However, the two donkey groups could trot, equally. In this study, 2700 gait records were registered from 300 donkeys. The sample included 1350 gait records from 169 ambling/trotting donkeys and 1350 gait records from 131 walking/trotting donkeys. Fixed effects included year, season, sex, farm/owner, husbandry system, weather, ground type and appraisers. Weight and age were included as covariates. MTDFREML software was used to estimate (co)variance components, genetic parameters and predict breeding values and their accuracies in both sets, separately. Gaits’ heritabilityu2009±u2009SE estimates were 0.56u2009±u20090.155, 0.53u2009±u20090.317 and 0.67u2009±u20090.166 for amble, walk and trot, respectively. Genetic correlations were 0.31u2009±u20090.216, 0.42u2009±u20090.115 and 0.28u2009±u20090.178, for amble and walk, amble and trot and walk and trot, respectively. Not all gaits are suitable to treat every human sensomotor condition. We developed a locomotion selection index, assessing the relative loss/gain in index accuracy when each gait modality was excluded to develop different gait specific therapeutic lines to genetically select the best performing donkeys from each gait modality. Our results suggest that gait genetic lines could be developed and may be potential selection criteria to consider in assisted-therapy donkey breeding programs.

Aggression in working mules and subsequent aggressive treatment by their handlers in Egyptian brick kilns - cause or effect?

ABSTRACT Mules found working in Egyptian brick kilns are often faced with poor welfare from being over worked, overloaded, having multiple lesions from ill‐fitted harnesses, poor body scores, and receiving aversive treatment by handlers. Reports have frequently revealed aggressive responses by mules toward their handlers. The main goal of this study was to investigate whether mule aggression is an innate act toward people or is a reactive response to rough handling procedures by their handlers. A total of 374 mules from 50 different kilns were assessed and their handlers were interviewed. The handlers questionnaire recorded the following parameters: handlers age, experience, and common beliefs about the aggression of brick kiln mules, and also data regarding load weights, working hours, and husbandry procedures carried out by the handlers were collected. The data were analyzed and correlations between parameters were tested using SPSS 17.1. Handlers data showed that 79% of participants believed that mules are inherently difficult to handle, 65% used nose ropes/metal chain for driving their mules, and 67% responded that mules must be beaten to work properly. Behavioral assessment revealed that 66% of mules were alert. Approach tests indicated that 30% of the mules exhibited signs of aggression (e.g., bite threat) when approached by an unfamiliar handler and only 16% showed signs toward their handlers (familiar). The assessment of body lesions showed that mistreatment‐induced lesions (42%) were more predominant than other categories of body lesions. Significant correlations (P ≤ 0.05) were found between mules aggressive responses toward observers and the following parameters; body condition score (rs = 0.42), along with the handlers age (rs = −0.53), level of experience (rs = −0.34), handlers common beliefs about mule aggression (rs = 0.64), and the nature of the work they were involved with at the kilns (work hours, rs = −0.63; load weight, rs = 0.38). Based on the results of this study, we concluded aggressive interactions exhibited by mules were most likely initiated by harsh, violent handling.

Genetic parameter and breeding value estimation of donkeys' problem-focused coping styles

Abstract Donkeys are recognized therapy or leisure-riding animals. Anecdotal evidence has suggested that more reactive donkeys or those more easily engaging flight mechanisms tend to be easier to train compared to those displaying the natural donkey behaviour of fight. This context brings together the need to quantify such traits and to genetically select donkeys displaying a neutral reaction during training, because of its implication with handler/rider safety and trainability. We analysed the scores for coping style traits from 300 Andalusian donkeys from 2013 to 2015. Three scales were applied to describe donkeys’ response to 12 stimuli. Genetic parameters were estimated using multivariate models with year, sex, husbandry system and stimulus as fixed effects and age as a linear and quadratic covariable. Heritabilities were moderate, 0.18u202f±u202f0.020 to 0.21u202f±u202f0.021. Phenotypic correlations between intensity and mood/emotion or response type were negative and moderate (−0.21 and −0.25, respectively). Genetic correlations between the same variables were negative and moderately high (−0.46 and −0.53, respectively). Phenotypic and genetic correlations between mood/emotion and response type were positive and high (0.92 and 0.95, respectively). Breeding values enable selection methods that could lead to endangered breed preservation and genetically selecting donkeys for the uses that they may be most suitable.Donkeys are recognized therapy or leisure-riding animals. Anecdotal evidence has suggested that more reactive donkeys or those more easily engaging flight mechanisms tend to be easier to train compared to those displaying the natural donkey behaviour of fight. This context brings together the need to quantify such traits and to genetically select donkeys displaying a neutral reaction during training, because of its implication with handler/rider safety and trainability. We analysed the scores for coping style traits from 300 Andalusian donkeys from 2013 to 2015. Three scales were applied to describe donkeys response to 12 stimuli. Genetic parameters were estimated using multivariate models with year, sex, husbandry system and stimulus as fixed effects and age as a linear and quadratic covariable. Heritabilities were moderate, 0.18u202f±u202f0.020 to 0.21u202f±u202f0.021. Phenotypic correlations between intensity and mood/emotion or response type were negative and moderate (-0.21 and -0.25, respectively). Genetic correlations between the same variables were negative and moderately high (-0.46 and -0.53, respectively). Phenotypic and genetic correlations between mood/emotion and response type were positive and high (0.92 and 0.95, respectively). Breeding values enable selection methods that could lead to endangered breed preservation and genetically selecting donkeys for the uses that they may be most suitable.

Effect of farming system on donkey milk composition

BACKGROUNDnDonkey milk is considered as a functional food for sensitive consumers, such as children who are allergic to cow milk. No information is available regarding the effect of farming systems on the quality of donkey milk. The present study aimed to evaluate the effect of the farming system and lactation stage on donkey milk with respect to gross composition, as well as fat-soluble vitamins and fatty acids (FA).nnnRESULTSnIndividual milk samples were collected from lactating jennies (nu2009=u200953) on the six of the largest farms located in North West Italy. The performance of lactating jennies, herd characteristics and feeding strategies were recorded at each milk sampling. The gross composition of the milk, along with the fat-soluble vitamin content, differed in accordance with the farming system. The lactation stage had limited effects on milk quality. A higher milk fat content corresponded to a higher amount of fresh herbage proportion in the diet, with the highest polyunsaturated fatty acid (PUFA), C18:1c9, C18:3n-3, n-3 FA, retinol and α-tocopherol content and the lowest concentrations of the FA that are less favorable for human health in the milk of animals fed on only forage diets.nnnCONCLUSIONnExtensive farming of dairy donkeys increased the fat content and fat-soluble vitamin concentration of milk and also altered the FA composition to a more favorable profile for human nutrition.