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Luca Fontanesi - One of the best experts on this subject based on the ideXlab platform.
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a genome wide association study for the number of teats in european Rabbits oryctolagus cuniculus identifies several candidate genes affecting this trait
Animal Genetics, 2021Co-Authors: Samuele Bovo, Giuseppina Schiavo, Valerio Joe Utzeri, Anisa Ribani, M Schiavitto, L Buttazzoni, R Negrini, Luca FontanesiAbstract:In the European Rabbit (Oryctolagus cuniculus), a polytocous livestock species, the number of teats indirectly impacts the doe reproduction efficiency and, in turn, the sustainable production of Rabbit meat. In this study, we carried out a genome-wide association study (GWAS) for the total number of teats in 247 Italian White does included in the Italian White Rabbit Breed selection program, by applying a selective genotyping approach. Does had either 8 (n = 121) or 10 teats (n = 126). All Rabbits were genotyped with the Affymetrix Axiom OrcunSNP Array. Genomic data from the two extreme groups of Rabbits were also analysed with the single-marker fixation index statistic and combined with the GWAS results. The GWAS identified 50 significant SNPs and the fixation index analysis identified a total of 20 SNPs that trespassed the 99.98th percentile threshold, 19 of which confirmed the GWAS results. The most significant SNP (P = 4.31 × 10-11 ) was located on OCU1, close to the NUDT2 gene, a breast carcinoma cells proliferation promoter. Another significant SNP identified as candidate gene NR6A1, which is well known to play an important role in affecting the correlated number of vertebrae in pigs. Other significant markers were close to candidate genes involved in determining body length in mice. Markers associated with increased number of teats could be included in selection programmes to speed up the improvement for this trait in Rabbit lines that need to increase maternal performances.
J.k. Serem - One of the best experts on this subject based on the ideXlab platform.
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) Rabbit (Oryctolagus cuniculus) Breed characteristics, Farmer Objectives and Preferences in Kenya: A correspondence analysis
2014Co-Authors: Sk Mailu, M.m. Wanyoike, J.k. Serem, C.k. GachuiriAbstract:Rabbit production is becoming important in Kenya as an economic undertaking. This may be due to decreasing per capita landholdings as a result of increasing human population density. This study was done to describe the Rabbit Breed characteristics, farmer objectives and preferences in Kenya to allow identification of constraints and opportunities along this particular value chain, information that is currently lacking. Respondents in the survey were purposively selected from four regions of the country with significant Rabbit farming. These included: Rift Valley, Central, Eastern and Coastal regions. Structured questions were asked, several Rabbit Breeds and their crosses were identified and the study coupled farmer stated objectives with these Breeds. The coupling of Breeds to the stated farmer assessment of their traits and benefits was also attempted. This was implemented through the application of correspondence analysis on these frequency data. Results showed that there was considerable rhyme between farmer stated objectives and the Rabbit Breeds that they kept while this rhyme also stretched to Breed and the farmer stated qualities of the Breeds. These results therefore showed that stated inherent qualities of the Breed also might direct farmer choices. Whereas slightly over half (52.3%) of the farmers kept Rabbits with a commercial intention, the findings indicated that some heavy Breeds such as French Lop and the Flemish Giant score highly for their carcass weight. In a commercial enterprise, these results show that farmers may require more capacity to appreciate the inherent Breed characteristics rather than just the overtly recognizable Breed characters.
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Rabbit Breed characteristics, farmer objectives and preferences in Kenya: A correspondence analysis
2013Co-Authors: Sk Mailu, M.m. Wanyoike, J.k. SeremAbstract:Rabbit production is becoming important in Kenya not by young boys but as an economic undertaking. This may be due to decreasing per capita landholdings due to increasing human population density. However, there is little published information on requirements for successful Rabbit production. A study was designed done to characterize the Rabbit production systems to allow identification of constraints and opportunities along this particular value chain. Respondents in a survey were purposively selected from four regions of the country where there is significant Rabbit farming activity according to the Ministry of Livestock Development. These included Rift Valley, Central, Eastern and Coastal region. Structured questions were asked, several Rabbit Breeds and their crosses were identified and the study sought to couple farmer stated objectives with these Breeds. The coupling of Breeds to the stated farmer assessment of their traits and benefits was also attempted. This was implemented through the application of correspondence analysis on these frequency data. Results indicated that there was considerable rhyme between farmer stated objectives and the Rabbit Breeds while this correspondence also stretched to Breed and the farmers' stated qualities of the Breeds. These results therefore showed that stated inherent qualities of the Breed also might direct farmer choices. Whereas slightly over half (52.3%) of the farmers kept Rabbits with a commercial intention, the findings from the analysis indicate that some heavy Breeds such as French Ear Lop and the Flemish Giant score highly for their carcass weight. That these Breeds have a poor bone-meat ratio unlike the more popular New Zealand White and Californian White indicate that farmers do not consider the true value of the product such as bone:meat ratios. In a commercial enterprise, these results are perplexing and serve to show that farmers may require more capacity to appreciate the inherent Breed characteristics rather than just the overtly recognizable Breed characters.
Sk Mailu - One of the best experts on this subject based on the ideXlab platform.
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) Rabbit (Oryctolagus cuniculus) Breed characteristics, Farmer Objectives and Preferences in Kenya: A correspondence analysis
2014Co-Authors: Sk Mailu, M.m. Wanyoike, J.k. Serem, C.k. GachuiriAbstract:Rabbit production is becoming important in Kenya as an economic undertaking. This may be due to decreasing per capita landholdings as a result of increasing human population density. This study was done to describe the Rabbit Breed characteristics, farmer objectives and preferences in Kenya to allow identification of constraints and opportunities along this particular value chain, information that is currently lacking. Respondents in the survey were purposively selected from four regions of the country with significant Rabbit farming. These included: Rift Valley, Central, Eastern and Coastal regions. Structured questions were asked, several Rabbit Breeds and their crosses were identified and the study coupled farmer stated objectives with these Breeds. The coupling of Breeds to the stated farmer assessment of their traits and benefits was also attempted. This was implemented through the application of correspondence analysis on these frequency data. Results showed that there was considerable rhyme between farmer stated objectives and the Rabbit Breeds that they kept while this rhyme also stretched to Breed and the farmer stated qualities of the Breeds. These results therefore showed that stated inherent qualities of the Breed also might direct farmer choices. Whereas slightly over half (52.3%) of the farmers kept Rabbits with a commercial intention, the findings indicated that some heavy Breeds such as French Lop and the Flemish Giant score highly for their carcass weight. In a commercial enterprise, these results show that farmers may require more capacity to appreciate the inherent Breed characteristics rather than just the overtly recognizable Breed characters.
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Rabbit Breed characteristics, farmer objectives and preferences in Kenya: A correspondence analysis
2013Co-Authors: Sk Mailu, M.m. Wanyoike, J.k. SeremAbstract:Rabbit production is becoming important in Kenya not by young boys but as an economic undertaking. This may be due to decreasing per capita landholdings due to increasing human population density. However, there is little published information on requirements for successful Rabbit production. A study was designed done to characterize the Rabbit production systems to allow identification of constraints and opportunities along this particular value chain. Respondents in a survey were purposively selected from four regions of the country where there is significant Rabbit farming activity according to the Ministry of Livestock Development. These included Rift Valley, Central, Eastern and Coastal region. Structured questions were asked, several Rabbit Breeds and their crosses were identified and the study sought to couple farmer stated objectives with these Breeds. The coupling of Breeds to the stated farmer assessment of their traits and benefits was also attempted. This was implemented through the application of correspondence analysis on these frequency data. Results indicated that there was considerable rhyme between farmer stated objectives and the Rabbit Breeds while this correspondence also stretched to Breed and the farmers' stated qualities of the Breeds. These results therefore showed that stated inherent qualities of the Breed also might direct farmer choices. Whereas slightly over half (52.3%) of the farmers kept Rabbits with a commercial intention, the findings from the analysis indicate that some heavy Breeds such as French Ear Lop and the Flemish Giant score highly for their carcass weight. That these Breeds have a poor bone-meat ratio unlike the more popular New Zealand White and Californian White indicate that farmers do not consider the true value of the product such as bone:meat ratios. In a commercial enterprise, these results are perplexing and serve to show that farmers may require more capacity to appreciate the inherent Breed characteristics rather than just the overtly recognizable Breed characters.
Xichun Wang - One of the best experts on this subject based on the ideXlab platform.
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Observations on biotic parameters of Angora Rabbit Breed under controlled conditions in different housing systems
Veterinary World, 2018Co-Authors: Sajid Ur Rahman, Xichun WangAbstract:Aim: The aim of the present study was to compare the body weight (BW) gain and physiological parameters such as temperature, respiratory rate (RR), and heart rate (HR) of Angora Rabbit reared in different housing systems. Materials and Methods: A total of 30 angora Rabbits (age 4-6 months), weight 1.5 kg in average were divided into three groups, i.e., (outdoor control [OC], indoor in cages [IC], and indoor open [IO]). All Rabbits were reared for 10 weeks. Feed and water were given ad libitum. BW gain and physiological parameters such as temperature, RR, and HR were recorded. Results: All parameters showed some degree of variations. The BW differed significantly (p
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observations on biotic parameters of angora Rabbit Breed under controlled conditions in different housing systems
Veterinary World, 2018Co-Authors: Sajid Ur Rahman, Xichun WangAbstract:Aim The aim of the present study was to compare the body weight (BW) gain and physiological parameters such as temperature, respiratory rate (RR), and heart rate (HR) of Angora Rabbit reared in different housing systems. Materials and Methods A total of 30 angora Rabbits (age 4-6 months), weight 1.5 kg in average were divided into three groups, i.e., (outdoor control [OC], indoor in cages [IC], and indoor open [IO]). All Rabbits were reared for 10 weeks. Feed and water were given ad libitum. BW gain and physiological parameters such as temperature, RR, and HR were recorded. Results All parameters showed some degree of variations. The BW differed significantly (p<0.05). The mean BW in kilogram (kg) of OC group was 1.59±0.03 obtained during the experimental period, while the BW of IC group shows a decrease of 1.43±0.05 and IO group it was 1.49±0.06 kg. The body temperature (BT) of the control group was 38.83±1.07°C, but IC and IO groups show increased in BT (39.10±0.78°C) and (39.33±1.24°C), indicated no significant difference among the groups (p=0.05). The RR in breaths/min of OC group recorded was 40.3±5.20, but the RR recorded for IC and IO groups was 41.2±7.29 and 39.3±6.30 breaths/min, respectively, showed less variation. The HR obtained in beat/min of OC group was 136.9±15.22, IC group (139.1±16.42) and IO group were (139.6±19.90 beat/min) showed less substantial variation. Conclusion The present study clearly indicates that housing Rabbits in cages and stress condition is a cause of poor welfare due to movement constraint, it will affect the body biotic parameters such as normal temperature, respiration as well as it can reduce the growth performance of animals significantly but housing system may not affect HR.
C.k. Gachuiri - One of the best experts on this subject based on the ideXlab platform.
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) Rabbit (Oryctolagus cuniculus) Breed characteristics, Farmer Objectives and Preferences in Kenya: A correspondence analysis
2014Co-Authors: Sk Mailu, M.m. Wanyoike, J.k. Serem, C.k. GachuiriAbstract:Rabbit production is becoming important in Kenya as an economic undertaking. This may be due to decreasing per capita landholdings as a result of increasing human population density. This study was done to describe the Rabbit Breed characteristics, farmer objectives and preferences in Kenya to allow identification of constraints and opportunities along this particular value chain, information that is currently lacking. Respondents in the survey were purposively selected from four regions of the country with significant Rabbit farming. These included: Rift Valley, Central, Eastern and Coastal regions. Structured questions were asked, several Rabbit Breeds and their crosses were identified and the study coupled farmer stated objectives with these Breeds. The coupling of Breeds to the stated farmer assessment of their traits and benefits was also attempted. This was implemented through the application of correspondence analysis on these frequency data. Results showed that there was considerable rhyme between farmer stated objectives and the Rabbit Breeds that they kept while this rhyme also stretched to Breed and the farmer stated qualities of the Breeds. These results therefore showed that stated inherent qualities of the Breed also might direct farmer choices. Whereas slightly over half (52.3%) of the farmers kept Rabbits with a commercial intention, the findings indicated that some heavy Breeds such as French Lop and the Flemish Giant score highly for their carcass weight. In a commercial enterprise, these results show that farmers may require more capacity to appreciate the inherent Breed characteristics rather than just the overtly recognizable Breed characters.
