World Rabbit Science最新文献_第9页

Prevalence of post mortem lesions recorded in the largest Italian rabbit slaughterhouse over a fifteen-years period (2003-2017) 意大利最大的兔子屠宰场在15年期间(2003-2017年)记录的死后病变患病率

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.11530

D. Conficoni, M. Cullere, N. Lago, L. Alberghini, T. Rossin, A. Dalle Zotte, V. Giaccone

{"title":"Prevalence of post mortem lesions recorded in the largest Italian rabbit slaughterhouse over a fifteen-years period (2003-2017)","authors":"D. Conficoni, M. Cullere, N. Lago, L. Alberghini, T. Rossin, A. Dalle Zotte, V. Giaccone","doi":"10.4995/wrs.2020.11530","DOIUrl":"https://doi.org/10.4995/wrs.2020.11530","url":null,"abstract":"The present research was aimed at evaluating the prevalence of gross lesions in condemned rabbit carcasses by analysing data recorded in a large Italian slaughterhouse. From 2003 until 2017, a total of 103 080 019 rabbits were processed: 101 722 673 were finishing rabbits and 1 357 346 were breeding females. A total of 742 397 carcasses were condemned due to lesions. Condemned carcasses from young rabbits (n=545 070) evidenced: 33.6% enteritis, 31.5% subcutaneous abscesses, 29.7% cachexia and 3.84% lung disease. Among breeding rabbits (n=197 327) there were 38.9% cachexia, followed by 35.8% uterine pathologies (breeding females), 14.9% subcutaneous abscesses, 5.42% ulcerative pododermatitis, 2.61% chronic nephritis and 2.47% lung disease. Regarding season-related lesions, for growing rabbits the total prevalence of lesions and diseases was the highest in winter (enteritis increased in winter, but subcutaneous abscesses were higher in summer). Rabbit does showed the highest prevalence of subcutaneous abscesses in summer and ulcerative pododermatitis in winter. From 2003 to 2017, the overall number of condemned carcasses doubled in both categories, with a sharp increase from 2012 till 2017. The prevalence of lesions among slaughtered rabbits differed between growing and breeding categories, which was attributable to different farming conditions, physiological status and slaughter age. Based on the above-mentioned findings, better management strategies at different stages of the rabbit production chain seem to be a necessary way to manage resulting waste and address possible economic concerns.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"39-47"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44756469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Impact of quercetin supplementation on testicular functions in summer heat-stressed rabbits 补充槲皮素对夏季热应激家兔睾丸功能的影响

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.12420

Z. Naseer, E. Ahmad, M. Aksoy, E. T. Epikmen

{"title":"Impact of quercetin supplementation on testicular functions in summer heat-stressed rabbits","authors":"Z. Naseer, E. Ahmad, M. Aksoy, E. T. Epikmen","doi":"10.4995/wrs.2020.12420","DOIUrl":"https://doi.org/10.4995/wrs.2020.12420","url":null,"abstract":"The current study was designed to determine the effects of dietary quercetin on epididymal sperm and testicular changes in male rabbits during summer heat stress (HS). Twelve adult male New Zealand white rabbits were submitted to summer heat conditions (temperature-humidity index 29.9±1.2). One group was fed a basal ration (BR; n = 6), whereas the other group was fed the same basal diet supplemented with quercetin (30 mg/kg d; Que-BR; n = 6) for 60 d, and both groups were sacrificed at the end of the experiment. Epididymis and testicles isolation was done for sperm, histopathology and apoptosis assessments. The results showed that quercetin improved epididymis weight, but did not affect other testicular dimensions except testicular length. A significant improvement was observed in epididymal sperm motility, concentration, kinematic parameters, viability, mitochondrial potential and acrosome integrity in Que-BR compared to the BR group. Lowered serum malondialdehyde level was observed in quercetin supplemented rabbits. Moreover, the quercetin supplementation maintained the interstitial stroma, seminiferous tubules architecture, germinal and Sertoli cells under HS, decreasing the apoptotic germ cell rate in seminiferous tubules. In conclusion, HS condition affects the sperm and testes configurations in rabbits and dietary quercetin minimises oxidative stress, which in turn protects the testes and sperm against HS induced damage.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"19-27"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44196482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Reliability of acid-insoluble ash as internal marker for the measurement of digestibility in rabbits 酸不溶性灰分作为测定家兔消化率内部标志物的可靠性

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.12216

G. Papadomichelakis, K. Fegeros

{"title":"Reliability of acid-insoluble ash as internal marker for the measurement of digestibility in rabbits","authors":"G. Papadomichelakis, K. Fegeros","doi":"10.4995/wrs.2020.12216","DOIUrl":"https://doi.org/10.4995/wrs.2020.12216","url":null,"abstract":"The present study aimed to evaluate acid-insoluble ash (AIA) as an internal marker for the measurement the coefficient of total tract apparent digestibility (CTTAD) in rabbits through two experiments (E1 and E2). In E1, 48 rabbits were used to calculate the CTTAD of the same basal diet according to the European reference method (ERM), the AIA and the titanium dioxide (TiO 2 with 1 g of TiO 2 /kg diet) techniques (n=16 rabbits/method). The effect of feed sample quantity on dietary AIA content was investigated and total collection of faeces was carried out to calculate marker recovery. In E2, 48 rabbits were allotted to three groups fed diets with no sugar beet pulp (SBP0) or with 100 (SBP100) and 200 (SBP200) g sugar beet pulp/kg (n=16 rabbits/group). Each group was divided into two subgroups, ERM and AIA (n=8 rabbits/subgroup), in which CTTAD was measured using the European reference and AIA method, respectively. In AIA subgroups, only 10% of the total daily faecal output was sampled from 9:00 to 9:30 am. Feed analysis in E1 showed that increasing sample quantity from 5 to 9 g did not affect the dietary AIA content; however, the analytical error was 7 and 5 times lower ( P <0.05) for 9 g, when compared to 5 and 7 g samples. Feed analysis also showed 1.030±0.003 g TiO 2 /kg diet. Faecal marker recovery was 99.80±0.03 and 96.89±0.16% for AIA and TiO 2 , respectively. The CTTAD of dry matter (DM), did not differ between methods in E1, but a 5-fold higher variability ( P <0.05) was observed for the TiO 2 technique in comparison with the ERM and AIA methods. Also, no differences in the CTTAD of DM between the ERM and AIA methods were found in E2. In conclusion, AIA is a reliable internal marker in rabbits and offers the possibility of measuring the CTTAD of diets with precision, when complete faecal collection or feed intake measurement is not possible.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"1-12"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43576118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Seasonal variations in furs of Gabaly and New Zealand white rabbits and their crossbred under Egyptian semi-arid conditions 埃及半干旱条件下Gabaly和新西兰大白兔及其杂交兔毛皮的季节变化

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.12779

A. Nasr, E. Taha, S. Naglaa, D. Essa

{"title":"Seasonal variations in furs of Gabaly and New Zealand white rabbits and their crossbred under Egyptian semi-arid conditions","authors":"A. Nasr, E. Taha, S. Naglaa, D. Essa","doi":"10.4995/wrs.2020.12779","DOIUrl":"https://doi.org/10.4995/wrs.2020.12779","url":null,"abstract":"The effect of breed and season on rabbits’ fur characteristics under Egyptian semi-arid conditions was studied in this research. Fifty-nine male rabbits aged 3-3.5 mo of Gabaly (GB, n=21) and New Zealand White (NZW, n=27) breeds and their crossbred (NZW×GB, n=11) were studied during two subsequent seasons; summer (n=31) and winter (n=28). Skin samples were taken pre-slaughtering to determine the histological parameters, skin layer thicknesses and physical traits of fur fibres. After slaughter, rabbits’ furs were chrome tanned to determine physical and chemical properties. Results showed that all histological parameters of follicle dimensions were affected ( P <0.01) by season, breed and their interaction. In summer, primary follicles had larger follicle dimensions and produced coarser fibres than in winter, whereas opposite results were observed for the secondary follicles. Additionally, the uniformity of fibre diameter distribution and hair length of furs were higher ( P <0.01) in summer than in winter. Results indicated the role of the seasonal variations in body coat to accommodate the climatic changes. NZW rabbits were superior ( P <0.01) in most histological parameters of follicle dimensions, followed by NZW×GB crossbred and finally GB rabbits, while NZW×GB crossbred produced finer ( P <0.01) fur fibre than NZW and GB rabbits. Otherwise, influence of season and breed were negligible on the skin layer thickness values and the physical and chemical fur properties. Consequently, the study concluded that tanned rabbit furs are suitable for manufacturing leather garments when used alone, while reinforcing the fur with textile padding may increase their utility for other leather manufacturing purposes.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"49-57"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42518571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Comparison between Tris-buffer and INRA-82 extenders on the quality of chilled rabbit spermatozoa Tris-buffer与INRA-82扩增剂对冷冻兔精子质量的比较

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.12287

A. Fadl, A. M. Ghallab, M. Abou-Ahmed

{"title":"Comparison between Tris-buffer and INRA-82 extenders on the quality of chilled rabbit spermatozoa","authors":"A. Fadl, A. M. Ghallab, M. Abou-Ahmed","doi":"10.4995/wrs.2020.12287","DOIUrl":"https://doi.org/10.4995/wrs.2020.12287","url":null,"abstract":"The aim of the present study was to compare the effects of tris-buffer and INRA-82 extenders on the quality of cooled rabbit spermatozoa. Pooled semen samples were collected from eight New Zealand White rabbit bucks, divided into three groups and diluted 1:5 with three different semen extenders: INRA-82, tris-citrate glucose (TCG) and tris-citrate trehalose (TCT). Following dilution, the samples were stored at 5°C for up to 48 h. Sperm motility was recorded at 24, 36 and 48 h post-cooling. Furthermore, sperm viability, morphology, membrane integrity, acrosome status and DNA integrity were assessed at 24 h post-cooling. We found that progressive motility percentages were significantly higher ( P <0.05) in samples diluted in INRA-82 (61.00, 53.50, 44.00% at 24, 36 and 48 h post-cooling, respectively) than those diluted in either TCG (39.25, 32.00, 19.75%) or in TCT (47.25, 40.50, 29.00%). We also reported that sperm viability, percentage of normal spermatozoa, percentage of spermatozoa with intact acrosome and DNA integrity after 24 h cooling were significantly higher ( P <0.05) in INRA-82 diluted samples compared to TCG and TCT diluted ones. In summary, our results show that dilution of rabbit semen in INRA-82 improved sperm physiological parameters post-cooling compared to those diluted in TCG or TCT. Our findings also suggest that INRA-82 is a promising diluent that can be used effectively to maintain the viability of chilled rabbit semen.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"13-18"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42472195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Association of Melanophilin (MLPH) gene polymorphism with coat colour in Rex rabbits 嗜黑素(MLPH)基因多态性与獭兔毛色的关系

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2020-03-31 DOI: 10.4995/wrs.2020.12082

J. Li, Yang Chen, M. Liu, Q. Chen, J. Zhou, G. Bao, Xinsheng Wu

{"title":"Association of Melanophilin (MLPH) gene polymorphism with coat colour in Rex rabbits","authors":"J. Li, Yang Chen, M. Liu, Q. Chen, J. Zhou, G. Bao, Xinsheng Wu","doi":"10.4995/wrs.2020.12082","DOIUrl":"https://doi.org/10.4995/wrs.2020.12082","url":null,"abstract":"Rex rabbit, with multiple phenotypes and colourful fur, is an interesting model for assessing the effect of coat colour gene mutations on characteristic pigmentation phenotype. Based on previous study, the melanophilin ( MLPH ) gene is a positional candidate gene related coat colour dilution. The fur colours are a lighter shade, e.g. grey instead of black. We sequenced 1689 base pairs of the MLPH gene in Chinchilla and black Rex rabbit. A total of 13 polymorphisms were identified, including seven missense mutations. The rabbit MLPH gene has a very high GC content and the protein shows 64.87% identity to the orthologous human protein (lack of homologous amino acids encoded by human MLPH exon 9). Hardy-Weinberg test showed that, except for the g.606C>A single nucleotid polymorphism (SNP), all other SNPs were in Hardy-Weinberg equilibrium. Haplotype analysis revealed that the seven missense mutation SNPs of two strains of Rex rabbits formed 10 haplotypes, but there were only seven major types of haplotypes (haplotype frequency P >0.05). The major haplotypes of the Chinchilla and black Rex rabbits were H1/H2/H3/H4/H5 and H1/H2/H3/H6/H8, respectively. The special haplotypes of Chinchilla Rex rabbit (H4, H5, H7) were consistently associated with the Chinchilla phenotype. This study provides evidence that different coat colour formation may be caused by one or more mutations within MLPH gene in several Rex rabbit strains. The data on polymorphisms that are associated with the Chinchilla phenotype facilitate the breeding of rabbits with defined coat colours.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"28 1","pages":"29-38"},"PeriodicalIF":0.8,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43888109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Identification of two novel single nucleotide polymorphism sites in the Myostatin (MSTN) gene and their association with carcass traits in meat-type rabbits (Oryctolagus cuniculus) 肌肉抑制素（MSTN）基因两个新的单核苷酸多态性位点的鉴定及其与肉兔胴体性状的关系

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2019-12-23 DOI: 10.4995/wrs.2019.10610

Li-Qin Yang, K. Zhang, Qiuying Wu, J. Li, Song-Jia Lai, T. Song, Ming Zhang

{"title":"Identification of two novel single nucleotide polymorphism sites in the Myostatin (MSTN) gene and their association with carcass traits in meat-type rabbits (Oryctolagus cuniculus)","authors":"Li-Qin Yang, K. Zhang, Qiuying Wu, J. Li, Song-Jia Lai, T. Song, Ming Zhang","doi":"10.4995/wrs.2019.10610","DOIUrl":"https://doi.org/10.4995/wrs.2019.10610","url":null,"abstract":"Two unknown single nucleotide polymorphism (SNP) sites in exons 1 (c.194C>T) and 2 (c.445T>A) of meat-type rabbit MSTN gene were identified in the study. Our objective was to analyse the population genetics structure of the two novel SNP sites in 230 individuals from six breeds and their associations with carcass traits of rabbits. We found that live body weight (BW), cold carcass weight (CCW), reference carcass weight (RCW), CCW percentage (PCCW) and RCW percentage (PRCW) of the rabbits with the genotype CC at the c.194C>T of exon 1 or AA at the c.445T>A of exon 2 were significantly higher than those with other genotypes. Diplotype significantly affected BW, RCW, CCW, PRCW (P<0.01) and PCCW and PCM (P<0.05). CC/AA was the advantageous diplotype for BW, RCW, CCW and PCM, and TT/AA was the advantageous diplotype for PCCW and PRCW. In contrast, TT/TT was the negative diplotype for BW, CCW, RCW, PCCW and PRCW, and TT/AA was the negative diplotype for PCM. The results suggest that the two new mutations of MSTN gene significantly affected BW, CCW, RCW, PCCW and PRCW of rabbits, and MSTN may be an important candidate gene of carcass traits in meat-type rabbits.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42662046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Does wild rabbit population size affect connectivity? 野兔种群的大小会影响连通性吗?

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2019-12-23 DOI: 10.4995/wrs.2019.12068

Rui Machado, P. Santos

{"title":"Does wild rabbit population size affect connectivity?","authors":"Rui Machado, P. Santos","doi":"10.4995/wrs.2019.12068","DOIUrl":"https://doi.org/10.4995/wrs.2019.12068","url":null,"abstract":"Wild rabbit is a relevant species in the Iberian Peninsula due to its ecological and economic roles. Conservationists and game managers therefore have a shared interest in assuring the existence of resilient and sustainable populations. Although management principles and guidelines are mostly known and understood, often the results are not as good as expected. Local abundance can vary significantly even in short periods, while the colonisation of adjacent territories is uncommon, probably due to the territorial behaviour of the species. Aware that the foundation of nuclei requires interaction among individuals, we hypothesised that rabbit abundance plays a significant part in population connectivity. In order to find out whether the population size affects nuclei connectivity, we conducted a graph theory-based connectivity analysis. The results confirm that connectivity grows with rabbit abundance, but only to a certain degree, and there is a spatial separation of the nuclei regardless of the population size. These outcomes suggest that a comprehensive wild rabbit population increment plan should address both the abundance and spatial distribution, but should not aim at achieving a continuous distribution of wild rabbit with constant or similar abundance. Regarding specific management actions, we argue that in restocking operations new nuclei should be located within dispersal range from the existing ones to promote inter-nuclei connectivity, but not too close, as the nuclei segregation tendency is likely to persist due to the species’ territoriality.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48394457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance of rabbit does housed in collective pens and individual cages 集体围栏和单独笼子中兔子的表现

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2019-12-23 DOI: 10.4995/wrs.2019.11540

L. Machado, E. Martínez-Paredes, C. Cervera

{"title":"Performance of rabbit does housed in collective pens and individual cages","authors":"L. Machado, E. Martínez-Paredes, C. Cervera","doi":"10.4995/wrs.2019.11540","DOIUrl":"https://doi.org/10.4995/wrs.2019.11540","url":null,"abstract":"In society today, there is increasing concern for the welfare of farm animals. New models of rabbit breeding are proposed, such as group housing of rabbit does in a semi-group system or environmental enrichment of individual housing. This work aimed to evaluate the reproductive performance and metabolic aspects of rabbit does housed in collective pens, comparing them to individual cages provided with a platform. Forty-eight animals were distributed in 24 individual cages (40×98×57 cm; width, length and height) and four collective pens (six does per pen; 240×100×65 cm) and remained during four cycles. The does previously housed in collective pens gained less weight and reached lighter weights by the first insemination day (3669 vs. 3872 g; P <0.01), but regained weight over the cycles and had a similar weight during the experiment (4306 vs. 4329 g). It was observed that there was a lower feed intake in the period before delivery in collective pens, which contributed to the lower kit birth weights (57.2 vs. 60.1 g/kit for collective pens and individual cage respectively, P <0.05). There were no differences in perirenal fat thickness, litter size at birth and milk yield, although does housed in collective pens had a lower feed intake (499 vs. 526 g dry matter/d for collective pens and individual cage, respectively; P <0.001) and lost more perirenal fat after grouping (–0.05 vs. +0.15 mm for collective pens and individual cage, respectively; P <0.05), and produced less milk the day after grouping (221 vs. 283 g for collective pens and individual cage, respectively; P <0.05). In collective pens, a higher number of inseminations to reach a pregnancy (1.43 vs. 1.24 for collective pens and individual cage, respectively; P <0.05) and lower number of weaned (56 vs. 66 for collective pens and individual cage, respectively; P <0.05) kits per doe per year were revealed for does in individual cages. Overall, the use of collective pens prejudiced some parameters and needs to be economically evaluated for adoption on commercial rabbit farms.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"27 1","pages":"227-235"},"PeriodicalIF":0.8,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41793927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Effects of replacement of alfalfa by big-leaf mulberry on growth performance, digestion and meat quality in growing rabbits 大叶桑叶替代苜蓿对生长兔生长性能、消化及肉质的影响

IF 0.8 4区农林科学

World Rabbit Science Pub Date : 2019-12-23 DOI: 10.4995/wrs.2019.11529

Xuezhuang Wu, P. Yang, Xiuhua Gao, Z. Wen, S. Dai, Mingxia Zhu, Li Xin Wang

{"title":"Effects of replacement of alfalfa by big-leaf mulberry on growth performance, digestion and meat quality in growing rabbits","authors":"Xuezhuang Wu, P. Yang, Xiuhua Gao, Z. Wen, S. Dai, Mingxia Zhu, Li Xin Wang","doi":"10.4995/wrs.2019.11529","DOIUrl":"https://doi.org/10.4995/wrs.2019.11529","url":null,"abstract":"This study aimed to investigate the effect of sundried big-leaf mulberry (BLM) as a replacement for alfalfa on the growth performance, digestibility of nutrients, nitrogen (N) utilisation and meat quality in New Zealand White rabbits. One hundred and sixty weaned rabbits, aged 35±1 d and with a body weight of 755±26 g, were randomly assigned to the 4 treatments with 20 replicates of 2 rabbits (1 male and 1 female) each. Animal performance was evaluated between the 35th and 77th d of age in 40 animals per treatment. The coefficients of total tract apparent digestibility (CTTAD) of nutrients and N utilisation were measured between 77 to 83 d of age in 30 animals per treatment. The control rabbits were fed a corn-soybean meal-alfalfa meal based diet. The three experimental groups were fed a similar diet in which the alfalfa meal was replaced by 10% (BLM10), 20% (BLM20), or 30% (BLM30) BLM. The final body weights and average daily gain were higher ( P 0.10), the CTTAD of ether extract was higher in rabbits fed the diets based on BLM ( P <0.05). No effect of treatment was noted on ingested and faecal N. Urinary ( P <0.05) and retained N ( P <0.10) were higher in animals fed with BLM30 and BLM20 diets, respectively. Dietary BLM supplementation increased a* ( P <0.05) and tended to reduce L* ( P <0.10) in rabbit meat samples. It was concluded that replacing alfalfa meal with BLM (20%) can promote growth and increase ether extract digestibility. Additionally, dietary BLM supplementation can increase the redness value of meat.","PeriodicalId":23902,"journal":{"name":"World Rabbit Science","volume":"27 1","pages":"199-205"},"PeriodicalIF":0.8,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45862907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6