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Effects of training of Saanen goats for the first milking on behavior, milk yield, and milk quality traits 训练萨能山羊首次挤奶对其行为、产奶量和牛奶质量特性的影响
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-12 DOI: 10.1016/j.applanim.2024.106444
Mayara Andrioli , Joseph K. Grajales-Cedeño , João Alberto Negrão , Mateus J.R. Paranhos da Costa
This study aimed to assess the effects of prepartum milking training of primiparous goats on behavior, plasma cortisol concentration, and milk yield and quality traits. Thirty-one primiparous Saanen goats were assigned into two treatments: CT = milking-trained (n = 16) and ST = not milking-trained (n = 15) goats. Milking training consisted of the handler entering the pen where the goats were and walking calmly among them for 20 minutes/day for seven days, and then driving the goats to the milking parlor, positioning them in the stanchion, and gently touching their ribs, legs, and udders for five minutes for seven days. Behavioral assessments were carried out measuring the latency that each goat took to get close to a known person (voluntary approach = LC) and the flight distance (FD) before training (BT), just after training (AT), at the beginning (between days five and seven, d5–7) and 30 days of lactation (d30). Milking reactivity was assessed by recording the step-kick (SK) and head, ear and tail movement (MOV) scores. Plasma cortisol concentrations (PCC) were measured after milking. All measurements were recorded at 5–7 (d5–7), 30 (d30), and 60 (d60) days of lactation, defining the assessment days. The number of animals that required restraint during milking was also recorded. Milk yield was recorded daily throughout the 120 days of the lactation period, and milk quality traits (dry matter, density, fat, protein, lactose, minerals, acidity, SCC, Staphylococcus and total bacterial count - TBC) at d5–7, d30, d60, d90, and d120. The goats’ reactivity decreased throughout lactation. CT goats showed a lower LC on d30 than before training. PCC showed higher values on d60 than prepartum. At the beginning of lactation, 73 % of ST goats were restrained for milking, while for CT goats, 45 %. Milk yield was highest in the period from 8 to 90 days of lactation and 0.5 kg/day higher (although not significant) in CT than in ST. Milk quality traits showed significant differences between assessment days, except for TBC and Staphylococcus counts. In conclusion, the training protocol did not significantly impact goats' reactivity during milking, PCC, and milk quality traits. However, there was a tendency to increase milk yield and reduce the number of animals restrained during milking.
本研究旨在评估初产山羊产前挤奶训练对其行为、血浆皮质醇浓度、产奶量和牛奶质量性状的影响。31 只初产萨能山羊被分为两个处理:CT = 接受过挤奶训练的山羊(n = 16),ST = 未接受过挤奶训练的山羊(n = 15)。挤奶训练包括:饲养员进入山羊所在的圈舍,在山羊中间平静地走动,每天20分钟,持续7天;然后将山羊赶到挤奶厅,将它们放在挤奶台上,轻轻触摸它们的肋骨、腿和乳房,持续5分钟,持续7天。行为评估是在训练前(BT)、训练后(AT)、泌乳初期(第五天和第七天之间,d5-7)和泌乳 30 天(d30)测量每只山羊接近已知人的潜伏期(自愿接近 = LC)和飞行距离(FD)。挤奶反应性通过记录步踢(SK)和头、耳、尾运动(MOV)得分进行评估。挤奶后测量血浆皮质醇浓度(PCC)。所有测量均记录在泌乳 5-7 (d5-7)、30 (d30) 和 60 (d60) 天,即评估天数。此外,还记录了挤奶过程中需要束缚的动物数量。在泌乳期的 120 天内,每天记录牛奶产量,并在第 5-7 天、第 30 天、第 60 天、第 90 天和第 120 天记录牛奶质量特性(干物质、密度、脂肪、蛋白质、乳糖、矿物质、酸度、SCC、葡萄球菌和细菌总数 - TBC)。山羊的反应性在整个哺乳期都有所下降。与训练前相比,CT 山羊在第 30 天的 LC 值较低。PCC山羊在第60天的LC值高于产前。在泌乳初期,73% 的 ST 山羊在挤奶时受到约束,而 CT 山羊只有 45%。泌乳期 8 至 90 天的产奶量最高,CT 比 ST 高 0.5 千克/天(尽管不显著)。除 TBC 和葡萄球菌计数外,牛奶质量性状在不同评估日之间存在显著差异。总之,训练方案对山羊挤奶时的反应性、PCC和牛奶质量性状没有显著影响。不过,有增加产奶量和减少挤奶期间受限动物数量的趋势。
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引用次数: 0
Exploring baseline behaviour in group-housed, pre-weaned dairy calves 探索群居断奶前乳牛的基线行为
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-07 DOI: 10.1016/j.applanim.2024.106446
Sarah E. McPherson , Laura E. Webb , Marie C. McFadden , Anna Flynn , Eddie A.M. Bokkers , Emer Kennedy
With increasing public concern for farm animal welfare, understanding their current welfare status is paramount. Animal welfare can be inferred from their behaviour, as behaviour represents the combination of internal and external cues. The aims of this study were to quantify a behavioural baseline for group-housed, pre-weaned dairy calves that were reared under conventional management conditions, and to determine how different internal (i.e. age) and external (i.e. temperature) factors affected this behaviour. Female dairy calves (n=47) were allocated to 1 of 3 pens based on birth date and reared under conventional Irish management conditions; after 3–4 d in individual pens, calves were moved into group pens where they had ad libitum access to water, concentrates, and forage (first barley straw, then hay). Milk replacer (6 L/d) was fed through an automatic milk feeder; calves were gradually weaned from day 42–84. A 24 h period/week of video recording was used for behaviour scoring for 8 consecutive weeks (scan sampling at 10-min intervals). Behaviours included posture (lying or standing) and activity (17 behaviours). Calves were scored for clinical health twice weekly and only healthy calves were used in the analysis (n=39). Behaviour proportions were analysed using generalised linear mixed models. Proportion of time spent lying decreased as calves aged (week 1 vs. 9; percentage mean ± standard deviation; 79.8 ± 4.04 vs. 72.1 ± 6.52 %; P=0.004), while time spent ruminating (2.0 ± 2.51 vs. 14.1 ± 8.72 %; P<0.001), eating bedding (0.8 ± 1.16 vs. 6.1 ± 4.66 %; P<0.001), eating forage (0.9 ± 1.20 vs. 1.8 ± 1.81 %; P=0.007), and eating concentrates (0.5 ± 1.15 vs. 2.2 ± 1.72 %; P=0.018) increased with age. On days when the minimum shed temperature was <4°C compared to >6°C, calves spent more time lying (75.9 ± 5.27 vs. 72.3 ± 5.78 %; P<0.001) and less time eating concentrates (0.8 ± 1.11 vs. 1.4 ± 1.49 %; P=0.035), eating forage (0.8 ± 0.91 vs. 1.5 ± 1.57 %; P=0.005), eating bedding (2.7 ± 2.87 vs. 4.0 ± 4.78 %; P=0.003), and walking (1.5 ± 1.20 vs. 2.0 ± 1.40 %; P=0.017), independent of age. These findings provide a normal behaviour baseline for future calf behaviour studies and highlight potential areas of improvement in current, conventional calf rearing practices.
随着公众对农场动物福利的关注与日俱增,了解其福利现状至关重要。动物福利可以从它们的行为中推断出来,因为行为代表了内部和外部线索的结合。本研究的目的是量化在传统管理条件下饲养的群居断奶前乳牛的行为基线,并确定不同的内部因素(如年龄)和外部因素(如温度)对这一行为的影响。雌性奶牛犊牛(47 头)根据出生日期被分配到 3 个栏中的 1 个,在爱尔兰传统管理条件下饲养;在单个栏中饲养 3-4 天后,犊牛被转移到集体栏中,在集体栏中,犊牛可以自由取用水、精料和饲料(首先是大麦秸秆,然后是干草)。代乳品(6 升/天)通过自动喂奶器喂给;犊牛从第 42-84 天开始逐渐断奶。连续 8 周每周 24 小时的视频记录用于行为评分(每隔 10 分钟扫描取样一次)。行为包括姿势(躺或站)和活动(17 种行为)。每周两次对犊牛的临床健康状况进行评分,只有健康的犊牛才被用于分析(n=39)。行为比例采用广义线性混合模型进行分析。随着犊牛年龄的增长,躺卧时间比例减少(第 1 周 vs. 第 9 周;百分比平均值 ± 标准差;79.8 ± 4.04 vs. 72.1 ± 6.52 %;P=0.004),而反刍时间(2.0 ± 2.51 vs. 14.1 ± 8.72 %;P<0.001)、吃垫料(0.8 ± 1.16 vs. 6.1 ± 4.66 %;P<0.001)、吃草料(0.9 ± 1.20 vs. 1.8 ± 1.81 %;P=0.007)和吃精料(0.5 ± 1.15 vs. 2.2 ± 1.72 %;P=0.018)的时间随着年龄的增长而增加。在最低舍温为 <4°C 的日子里,犊牛躺卧的时间更长(75.9 ± 5.27 vs. 72.3 ± 5.78 %;P<0.001),吃精料的时间更短(0.8 ± 1.11 vs. 1.4 ± 1.49 %;P=0.035)、吃草料(0.8 ± 0.91 vs. 1.5 ± 1.57 %;P=0.005)、吃垫料(2.7 ± 2.87 vs. 4.0 ± 4.78 %;P=0.003)和行走(1.5 ± 1.20 vs. 2.0 ± 1.40 %;P=0.017)的时间较少,与年龄无关。这些发现为今后的犊牛行为研究提供了一个正常行为基线,并突出了当前传统犊牛饲养方法中可能需要改进的地方。
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引用次数: 0
Improving effectiveness of environmental enrichment: The role of light intensity in rock bream (Oplegnathus fasciatus) rearing 提高环境富集的有效性:光照强度在岩鲷(Oplegnathus fasciatus)饲养中的作用
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-07 DOI: 10.1016/j.applanim.2024.106421
Zhe Li , Jingjing He , Shanshan Zhou , Jie Ying , Kaida Xu
Environmental enrichment is a potential approach to enhance the fitness and survival of hatchery fish stocked for conservation purposes. Its effectiveness presumably depends not only on ecologically relevant features of physical enrichment but also on light condition applied. Despite the importance, few studies have reported on the role of light in enriched rearing. This study sought to optimize the enriched rearing of juvenile rock bream (Oplegnathus fasciatus) particularly regarding their physiological and behavioral performance by regulating light intensity. Juveniles were reared in either standard tanks (no enrichment) or enriched tanks with polyethylene ropes simulating drifting algae at three different light intensities (400, 800 or 1600 lux) for 32 days. Our findings revealed that cortisol levels of the fish increased with light intensity even in the presence of the physical structure. No significant effect of light intensity was detected on growth. Compared to standard fish, fish reared with enrichment showed higher levels of caudal fin damage and cortisol at all the light intensities, suggesting increased chronic stress; in addition, the fish displayed higher shelter-seeking behavior. These results highlight the importance of maintaining low light intensities to minimize chronic stress in the fish. Moreover, adjustments to the enriched rearing condition are recommended to mitigate adverse effects on physiological aspects before incorporated into practical implementation in stock enhancement programs.
环境增殖是提高为保护目的放流的孵化鱼类的适应性和存活率的一种潜在方法。据推测,其有效性不仅取决于物理富集的生态相关特征,还取决于所应用的光照条件。尽管很重要,但很少有研究报道光照在增殖饲养中的作用。本研究试图通过调节光照强度来优化岩鳊(Oplegnathus fasciatus)幼鱼的强化饲养,尤其是在其生理和行为表现方面。研究人员将幼鱼饲养在标准鱼缸(无强化)或装有聚乙烯绳的强化鱼缸中,模拟在三种不同光照强度(400、800 或 1600 勒克斯)下漂流的藻类,为期 32 天。我们的研究结果表明,即使在有物理结构的情况下,鱼体的皮质醇水平也会随着光照强度的增加而增加。光照强度对生长没有明显影响。与标准鱼类相比,在所有光照强度下,富集饲养的鱼类尾鳍损伤和皮质醇水平都更高,表明慢性应激增加;此外,鱼类表现出更高的寻求庇护行为。这些结果凸显了保持低光照强度以减少鱼类慢性应激的重要性。此外,还建议调整富集饲养条件,以减轻对生理方面的不利影响,然后再在鱼种增殖计划中实际实施。
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引用次数: 0
Multiparous ewes have greater mating success when competing with nulliparous ones 多胎母羊在与单胎母羊竞争时交配成功率更高
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-06 DOI: 10.1016/j.applanim.2024.106443
Gustavo Campos Bueno Dias , Aline Freitas-de-Melo , Juan Pedro Bottino , Maria Jesús Frisch-Braga , Adroaldo José Zanella , Germana Vizzotto Osowski , Raquel Pérez-Clariget , Rodolfo Ungerfeld
The hypothesis of this study was that multiparous ewes are more attractive to rams than nulliparous ewes, leading to more intense courtship and mating displays by rams in competitive environments. Thus, this study aimed to compare the sexual interactions of multiparous or nulliparous estrous ewes tested together or individually with sexually active males. Seven sexually experienced Corriedale rams, 21 multiparous, and 21 nulliparous Corriedale ewes were used. Competitive and individual sexual behavior tests were performed for 3 consecutive days immediately after estrous detection. Seven rams were tested with seven different dyads of one multiparous and one nulliparous female daily, totaling 14 ewes per day. The competitive sexual behavioral test evaluated a ram together in a pen with one multiparous ewe and one nulliparous ewe for 10 min. In the individual sexual behavioral test, each ram was tested twice for 10 min, with the same multiparous and nulliparous females used in the competitive sexual tests. The sexual behaviors of rams were recorded in both tests, and ewes' behaviors were registered in the competitive sexual tests. During the competitive sexual tests, rams approached, mated, and tended to sniff the multiparous ewes before the nulliparous ewes (p=0.03; p=0.01; p=0.056, respectively). In those tests, rams mated the multiparous ewes more efficiently than nulliparous ones (p=0.002), meaning that rams mounted multiparous fewer times to ejaculate. The number of flehmens and their length were greater in nulliparous than in multiparous (0.01 and 0.002, respectively). The nulliparous ewes urinated more times and tended to do it in greater duration and tended to walk more than the multiparous (p=0.01; p=0.06; p=0.08, respectively). During the individual sexual behavioral tests, rams showed no differences in the sexual behaviors displayed toward multiparous and nulliparous females. In conclusion, multiparous ewes were preferred as sexual partners over nulliparous ewes, with rams showing greater efficiency in ejaculating with multiparous ewes. This increased sexual attractiveness was primarily due to the ewes' attractive signals rather than their proceptive behaviors. However, multiparous and nulliparous ewes were courted and mated similarly when rams had no choice, increasing the likelihood of reproduction in both groups. While nulliparous ewes signaled their reproductive status more frequently through urination, this signal did not compensate for the other signals provided by multiparous ewes, which contributed to their higher sexual attractiveness. These findings offer practical insights, emphasizing the importance of separating multiparous and nulliparous ewes to optimize reproductive outcomes in collective breedings.
本研究的假设是,多情母羊比无情母羊对公羊更有吸引力,从而导致公羊在竞争环境中表现出更强烈的求偶和交配行为。因此,本研究旨在比较多情或无情发情母羊与性活跃雄性一起或单独进行的性互动。研究使用了 7 只有性经验的科里迪尔公羊、21 只多情母羊和 21 只无情科里迪尔母羊。在检测到发情后立即进行连续 3 天的竞争性性行为和个体性行为测试。每天有 7 只公羊与 7 组不同的多胎母羊和单胎母羊进行测试,每天共测试 14 只母羊。竞争性行为试验是将一只公羊与一只多情母羊和一只无情母羊关在一个围栏中,进行10分钟的评估。在个体性行为测试中,每只公羊与竞争性测试中使用的多产母羊和无产母羊进行两次测试,每次 10 分钟。公羊的性行为在两次试验中均有记录,母羊的行为在竞争性试验中也有记录。在竞争性试验中,公羊先于无产仔母羊接近、交配和嗅闻多产仔母羊(p=0.03;p=0.01;p=0.056)。在这些测试中,公羊与多胎母羊交配的效率高于无胎母羊(p=0.002),这意味着公羊骑乘多胎母羊射精的次数更少。空怀母羊的跳蛋数量和长度均大于多胎母羊(分别为 0.01 和 0.002)。与多胎母羊相比,无阴道母羊的排尿次数更多,持续时间更长,行走次数更多(p=0.01;p=0.06;p=0.08)。在个体性行为测试中,公羊对多胎母羊和单胎母羊的性行为没有差异。总之,多胎母羊比无胎位母羊更喜欢作为性伴侣,公羊与多胎母羊的射精效率更高。这种性吸引力的增加主要是由于母羊发出了诱人的信号,而不是它们的诱导行为。然而,当公羊别无选择时,多产母羊和无产母羊的求偶和交配情况相似,这增加了两组母羊繁殖的可能性。虽然无产仔数母羊更频繁地通过排尿来表明自己的生殖状态,但这一信号并不能弥补多产仔数母羊提供的其他信号,而多产仔数母羊提供的其他信号有助于提高它们的性吸引力。这些研究结果提供了实用的见解,强调了将多胎母羊和无胎母羊分开以优化集体配种繁殖结果的重要性。
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引用次数: 0
Modelling behavior of Crested gecko (Correlophus ciliatus) using classification algorithms 利用分类算法模拟凤头壁虎(Correlophus ciliatus)的行为
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-04 DOI: 10.1016/j.applanim.2024.106436
Jakub Pacoń, Barbara Kosińska-Selbi, Jarosław Wełeszczuk, Joanna Kochan, Wojciech Kruszyński
Animal behavior plays a crucial role in evolution of many species. Many studies focused on animal behavior enhance the ability to collect large and detailed data. However, this kind of data is surpassing the capability of traditional statistical methods for analysis. In this study we propose to use artificial intelligence (AI) with machine learning models (ML) as tools to study animal behavior and potentially assumed evolution patterns in their behavior. For the Crested gecko (Correlophus ciliatus), some guidelines have been published regarding the breeding of these reptiles, focusing on their behavior. However, little is known about moderating their behavior using AI and advanced ML algorithms. In this study, based on information collected from twenty individuals, we proposed building a supervised classifier model using simple Decision Tree classifier (DT), Gradient Boosting classifier (GB) and Extreme Gradient Boosting classifier (XGBoost). Our results show that the highest accuracy (above 60 %) was achieved for variables which were not complex in terms of animal behavior. The analysis presented in this study, demonstrates that it is possible to model Crested Gecko behavior using ML models.
动物行为在许多物种的进化过程中发挥着至关重要的作用。许多关注动物行为的研究都提高了收集大量详细数据的能力。然而,这类数据已经超出了传统统计方法的分析能力。在这项研究中,我们建议使用人工智能(AI)和机器学习模型(ML)作为研究动物行为的工具,并假设动物行为的潜在进化模式。对于凤头壁虎(Correlophus ciliatus),已经发布了一些关于这些爬行动物繁殖的指南,重点关注它们的行为。然而,人们对利用人工智能和先进的 ML 算法来调节它们的行为却知之甚少。在本研究中,基于从 20 个个体收集到的信息,我们建议使用简单的决策树分类器(DT)、梯度提升分类器(GB)和极端梯度提升分类器(XGBoost)建立一个监督分类器模型。我们的结果表明,对于动物行为并不复杂的变量,准确率最高(超过 60%)。本研究中的分析表明,可以使用 ML 模型对冠壁虎的行为进行建模。
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引用次数: 0
Salivary oxytocin response of dairy cows to nursing and permanent separation from their calves, and the influence of the cow-calf bond 奶牛对哺乳和与犊牛永久分离的唾液催产素反应,以及奶牛与犊牛关系的影响
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-02 DOI: 10.1016/j.applanim.2024.106429
Heather W. Neave , Jean-Loup Rault , Emma Hvidtfeldt Jensen , Margit Bak Jensen
Oxytocin is a hormone involved in milk let-down, facilitating maternal behavior and parent-young bonding, and attenuating the stress response under challenge, but the release of oxytocin also appears to be dependent upon the social context. Dairy cows are commonly separated from their calves at birth, preventing maternal behavior and the establishment of a social bond. The growing interest in maintaining cow-calf contact provides a practically relevant context to study how oxytocin is affected by differing levels of cow-calf contact. Furthermore, the oxytocinergic system is likely affected by the stress of permanent cow-calf separation, depending on weaning method and strength of the cow-calf bond. Dairy cows were managed with full-time (23 h/d of calf contact), part-time (10 h/d of calf contact) or no calf contact (separated 48 h after birth), and then weaned by either: 50 % reduction in original calf contact time in wk 8 and 9 (‘reduced-contact’), or calf contact time remained unchanged (‘unchanged-contact’). Permanent separation from their calves occurred at wk 10 (n=14 for each treatment combination). Saliva was sampled in wk 8 before and after a nursing event over 3d, and in wk 10 before and after permanent separation (2 h after, and every 24 h thereafter for 3d), and analysed for oxytocin concentration. Cow-calf bond was measured as: motivation for cows to reunite with their calves (pressure cows were willing to exert on a weighted gate), and frequency and duration of social interactions between dam and calf. Cows with the most opportunity for calf contact (full-time; unchanged-contact) tended to have higher oxytocin concentrations around nursing, and oxytocin concentration around nursing tended to be positively related to proportion of total daily time together spent in physical contact. Over the 4-d post separation period, oxytocin response was generally stable for cows with male calves, but the pattern was variable for cows with female calves and in opposing directions for full- and part-time cows. Reduced-contact cows had greater oxytocin concentration over the separation period than unchanged-contact cows, but only if they had a male calf. In unchanged-contact cows, the oxytocin response to separation tended to increase if the cow-calf bond was stronger. These results highlight the complexity of the oxytocin response to different social situations, which depended on prior level of calf contact, calf sex, and strength of the cow-calf bond. Future research should explore how management practices influence social bonds and the oxytocinergic system, given their role in modulating stress resilience.
催产素是一种荷尔蒙,它参与泌乳、促进母性行为和亲子关系,以及减轻挑战下的应激反应,但催产素的释放似乎也取决于社会环境。奶牛出生后通常会与犊牛分离,这阻碍了母性行为和社会纽带的建立。人们对保持奶牛与犊牛接触的兴趣与日俱增,这为研究催产素如何受到不同程度的奶牛与犊牛接触的影响提供了一个切合实际的背景。此外,催产素能系统很可能会受到牛犊永久分离的压力影响,这取决于断奶方法和牛犊纽带的强度。对奶牛进行全时(23小时/天的犊牛接触)、非全时(10小时/天的犊牛接触)或无犊牛接触(出生后48小时分离)的管理,然后采用以下任一种方法断奶:在第 8 和第 9 周,犊牛的原始接触时间减少 50%("减少接触"),或者犊牛的接触时间保持不变("不变接触")。在第 10 周时与犊牛永久分离(每种处理组合的样本数均为 14)。在第8周哺乳前和哺乳后的第3d,以及在第10周永久分离前和永久分离后(哺乳后2小时,此后每24小时(第3d))采集唾液样本,并分析催产素浓度。母牛与犊牛亲情的衡量标准是:母牛与犊牛团聚的动机(母牛愿意对加权门施加的压力),以及母牛与犊牛之间社会互动的频率和持续时间。与犊牛接触机会最多的奶牛(全职接触;不变接触)在哺乳期的催产素浓度往往较高,哺乳期的催产素浓度往往与每天身体接触的总时间比例呈正相关。在分离后的 4 天内,有雄性犊牛的奶牛的催产素反应基本稳定,但有雌性犊牛的奶牛的催产素反应则变化不定,而且全职和兼职奶牛的催产素反应方向相反。在分离期内,减少接触的奶牛的催产素浓度高于未改变接触的奶牛,但只有当它们有一头雄性犊牛时才会出现这种情况。在接触不变的奶牛中,如果母牛与犊牛的联系更紧密,分离时催产素的反应往往会增加。这些结果突显了催产素对不同社会情境反应的复杂性,这种反应取决于先前的犊牛接触程度、犊牛性别以及母牛与犊牛纽带的强度。鉴于社会纽带和催产素能系统在调节应激恢复能力方面的作用,未来的研究应探索管理方法如何影响社会纽带和催产素能系统。
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引用次数: 0
How to write a good Revision Note 如何写好修订说明
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-01 DOI: 10.1016/j.applanim.2024.106445
Péter Pongrácz, Irene Camerlink
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引用次数: 0
An exploration of the postural, location- and social contact- related sub-characteristics of inactive but awake behaviour as a depression-like indicator in mice 探索作为小鼠抑郁样指标的不活跃但清醒行为的姿势、位置和社会接触相关子特征
IF 2.2 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-10-29 DOI: 10.1016/j.applanim.2024.106431
Anna C. Trevarthen , Agustina Resasco , Emily M. Finnegan , Elizabeth S. Paul , Michael T. Mendl , Carole Fureix
Inactive behaviour is essential to life. However, specific forms of inactivity may be indicative of compromised welfare in certain captive conditions. Inactive but awake behaviour (IBA - spontaneous, motionless awake behaviour without interacting with the surroundings) has been documented in some species and may be associated with poor welfare and negatively valenced affective states. In our previous work in laboratory mice, we have identified environmental risk factors (non-enriched housing) and curative factors (antidepressant drug Venlafaxine) for IBA and we hypothesise that greater levels of IBA may represent a depression-like state in this species. Here we aimed to identify which specific sub-characteristics of IBA would show construct validity as a depression-like state by exploring the posture (i.e. lying, curled lying or sitting), social contact position (i.e. in physical contact with a cage mate or not) and location of mice while performing the behaviour during two experiments (respectively investigating the aetiology and the curative factors of IBA). In both experiments we expected that more IBA would be displayed in standard (non-enriched) laboratory cages, compared with large highly-enriched cages and that a move from a highly-enriched to a non-enriched cage would increase IBA, while the opposite treatment would result in a decrease. In our second experiment (curative factors investigation), we predicted that less IBA would be displayed by mice that voluntarily ingested an antidepressant (Venlafaxine) versus a placebo. Because we could not control the number of instances of each IBA sub-characteristic we measured and we had no a priori predictions about which IBA sub-characteristics would match our general IBA treatment predictions, we compared the effect size and the direction of the effect between our treatment groups to explore which of the sub-characteristics matched our general IBA predictions. Overall, we found little variation in the location IBA was performed, with the majority being seen in the nest. Across treatment comparisons in both experiments, overall, the largest effect sizes were measured for IBA performed when in contact with the cage mate and performed when lying and both characteristics generally matched the direction of our treatment-related predictions. We suggest that future work should perform more detailed analyses of the specific characteristics of IBA by identifying behavioural sequences and the co-occurrence of the sub-characteristics to obtain a more complete picture of IBA as a depression-like indicator.
不活动是生命的基本要素。然而,在某些圈养条件下,特定形式的不活动可能表明福利受损。不活跃但清醒的行为(IBA - 不与周围环境互动的自发、一动不动的清醒行为)已在某些物种中得到记录,并可能与福利低下和负面情绪状态有关。在我们以前对实验鼠的研究中,我们已经确定了IBA的环境风险因素(非富集饲养)和治疗因素(抗抑郁药物文拉法辛),我们假设IBA水平越高可能代表该物种的抑郁样状态。在此,我们旨在通过在两个实验(分别研究 IBA 的病因和治疗因素)中探究小鼠的姿势(即躺卧、蜷曲躺卧或坐着)、社会接触位置(即是否与笼中的同伴有身体接触)和小鼠在进行该行为时的位置,来确定 IBA 的哪些特定子特征会显示出抑郁样状态的建构有效性。在这两项实验中,我们预计,与高密度的大型笼子相比,在标准(非高密度)实验室笼子中会出现更多的 IBA 行为,而且从高密度笼子转移到非高密度笼子会增加 IBA 行为,而相反的处理则会减少 IBA 行为。在第二个实验(治疗因素调查)中,我们预测自愿摄入抗抑郁药(文拉法辛)的小鼠相对于安慰剂会表现出较少的 IBA。由于我们无法控制所测量的每个 IBA 子特征的实例数量,而且我们也无法事先预测哪些 IBA 子特征会与我们的一般 IBA 治疗预测相匹配,因此我们比较了治疗组之间的效应大小和效应方向,以探索哪些子特征与我们的一般 IBA 预测相匹配。总体而言,我们发现进行 IBA 的地点差异不大,大多数都在巢中。在两个实验的处理比较中,总体而言,与笼伴接触时和躺卧时进行IBA的效应大小最大,而且这两个特征通常与我们的处理相关预测方向一致。我们建议,未来的工作应该通过识别行为序列和子特征的共同出现,对IBA的具体特征进行更详细的分析,以便更全面地了解IBA作为抑郁样指标的情况。
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引用次数: 0
Preface for the special issue of the 55th International Congress of the ISAE ISAE第55届国际大会特刊序
IF 2.3 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2023-11-01 DOI: 10.1016/j.applanim.2023.106027
Dana L.M. Campbell, Miroslav Kjosevski, Vlatko Ilieski, Kris Descovich
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引用次数: 0
The human-animal bond and at-home behaviours of adopted Indian free-ranging dogs 被收养的印度自由放养犬的人畜关系和家庭行为
IF 2.3 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2023-11-01 DOI: 10.1016/j.applanim.2023.106014
Rubina Mondal , Alexandra Protopopova , Anindita Bhadra

Free-ranging dogs (FRDs) represent the largest population of dogs around the world. Their lives are not under direct human supervision and these dogs can be found in and around all possible forms of human habitation. Increased urbanization, poor population management measures and open garbage dumps have compounded their population over the years, leading to increased dog-human conflict, especially in the Global South. Pet keeping has been on the rise in India but most dogs are commercially acquired and are typically foreign breeds. Adoption of FRDs may be a potential solution for both population management and better welfare. While many studies have been conducted on dog behavior across the Global North, studies pertaining to adoptability, dog-human bonds, and welfare of FRDs have been largely missing. We investigated the in-house behaviour and human-animal bonds among adopted FRDs in India using a mixed method approach. Participants were recruited using social media using a snowball method. Data were collected on demographics and lifestyle of both the owners and their dogs, along with owner responses on the Canine Behaviour and Research Questionnaire (C-BARQ, Survey I) and the Monash Dog Owner Relationship Scale (MDORS, Survey II). Questions on reasons for adoption, not sterilizing their dogs and behaviour consultation were kept as open responses. Exploratory factor analysis (EFA) was conducted on the C-BARQ items to investigate differences in factor structure from previously established studies in Europe and United States. Influence of demographic and lifestyle parameters on factor scores were investigated using logistic regression. We received valid responses from 1484 respondents for Survey I and 427 responses for Survey II from participants, who had filled the surveys for the same adopted FRD. A 13-factor structure emerged from the EFA- Stranger directed aggression, Owner directed aggression, Dog directed aggression, Fear, Nonsocial fear, Touch sensitivity, Separation related problems, Attachment, Excitability, Energy, Chasing, Elimination and Stereotypy. Comparison of scores across sex and neuter status of the dogs revealed differences. Various demographic factors influenced the behaviour of the adopted dogs. Owners reported a very high Emotional Closeness, low Perceived costs and average dog-owner interaction. The dog-owner relationship was mostly influenced by lifestyle and demographic factors rather than the dog’s behaviour. Overall, our results indicate that FRDs can adapt to a domestic life and make good pets. This study is a first attempt to bridge the ethnocultural gap on dog-keeping from India and lays the foundation for multiple avenues for future studies on the welfare of FRDs in the Global South.

自由放养的狗(frd)代表了世界上最大的狗群。它们的生活不受人类的直接监督,这些狗可以在所有可能的人类居住形式中或周围找到。多年来,城市化进程加快、人口管理措施不力和露天垃圾场使其人口增加,导致狗与人的冲突增加,尤其是在全球南方国家。印度的宠物饲养一直在增加,但大多数狗都是商业获得的,而且是典型的外国品种。采用森林保护区可能是人口管理和改善福利的潜在解决办法。虽然在全球北方对狗的行为进行了许多研究,但有关frd的可收养性、狗与人的关系和福利的研究在很大程度上是缺失的。我们使用混合方法调查了印度被收养的frd的内部行为和人-动物关系。参与者是通过社交媒体用滚雪球的方式招募的。收集了主人和狗的人口统计和生活方式数据,以及主人对犬类行为和研究问卷(C-BARQ,调查I)和莫纳什狗主人关系量表(MDORS,调查II)的回答。关于收养原因、不给狗消毒和行为咨询的问题作为公开回答。对C-BARQ项目进行探索性因子分析(EFA),探讨因子结构与欧美已有研究的差异。采用logistic回归研究人口统计学和生活方式参数对因子得分的影响。我们收到了1484名调查对象的有效回复,以及427名调查对象的有效回复,他们都填写了相同的采用FRD的调查问卷。从EFA中产生了一个13因素结构——陌生人定向攻击、主人定向攻击、狗定向攻击、恐惧、非社会恐惧、触摸敏感性、分离相关问题、依恋、兴奋性、能量、追逐、消除和刻板印象。对不同性别和绝育状态的狗的得分进行比较,发现了差异。各种人口因素影响了被收养狗的行为。主人报告说,他们的情感亲密度很高,感知成本很低,与狗主人的互动也很正常。狗主人的关系主要受生活方式和人口因素的影响,而不是狗的行为。总的来说,我们的研究结果表明,frd可以适应家庭生活,成为好的宠物。这项研究是首次尝试弥合印度养狗的民族文化差距,并为未来研究全球南方frd福利的多种途径奠定基础。
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引用次数: 0
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Applied Animal Behaviour Science
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