Suchergebnisse

Immunocastration -vaccination against gonadotropin releasing hormone (GnRH)- has been shown to prevent sexual development and boar taint in pigs being a feasible alternative to surgical castration (SC). Studies in conventional pigs point out that immunocastrated (IC) pigs show better performance than SC pigs. Apart from the benefits on animal welfare, this fact could be of interest for Iberian pigs and other fatty pig types, characterized by long productive cycles and low capacity for lean tissue growth. There is a question on whether protein requirements might be increased in IC compared to SC Iberian pigs. The purpose of this study was to examine the effects of immunocastration on Iberian pig growth and nitrogen (N) retention under 3 dietary protein concentrations. Fifty-four pure Iberian pigs were used (3 sexes: IC males, IC females, SC males; 3 isoenergetic diets: 150, 130 and 110 g CP/kg DM, 6 pigs/treatment combination). Vaccination against GnRH was at 4.3 (40 kg) and 6 months of age (70-80 kg). Pigs were individually housed consuming the experimental diets from 40 to 105 kg- BW with a slight restriction. Digestibility and N balance assays were performed at 50 and 90 kg BW, respectively. The IC males showed higher overall growth rate (+13%; P<0.001) and feed efficiency (+9.6%; P<0.001) than SC males and IC females, and slightly higher daily feed intake (+3%, P<0.001). No significant effect of dietary protein level was found on growth or feed efficiency. Before the second vaccination, IC pigs showed higher N retention (13 to 39%; P<0.001) and efficiency of N utilization (22 to 47%; P<0.001) than SC males and IC females. Pigs fed the lower protein content diet retained less N (P<0.05). However, no significant differences among sex groups in N retention parameters were detected after the second vaccination. Higher performance of IC male pigs seems to be related to a greater capacity for N retention before receiving the second dose of the vaccine. Funded by European Union's H2020 RIA program ...

Immunocastration (IC, vaccination against gonadotropin releasing hormone (GnRH)) is one alternative to surgical castration (SC) for preventing sexual development and boar taint in male pigs. A temporal increase in performance has been described for IC pigs before the second vaccination against GnRH. The objective of this work was to assess the effects of IC on Iberian male and female pigs (fed diets of increasing CP content) on performance, nitrogen retention (NR) and digestibility, and carcass traits. Fifty-four pure Iberian pigs individually housed were allocated to a 3 × 3 factorial arrangement with three sex groups (IC males, IC females and SC males), three diets (153, 137 and 119 g CP/kg DM; 14 MJ metabolisable energy/kg DM) and six pigs per treatment combination. Pigs were vaccinated at 18 weeks of age (40 kg BW) and seven weeks later (70–80 kg BW) and fed at 0.9 × ad libitum on BW basis. Two digestibility and nitrogen balance assays were performed before and after the second vaccination, respectively. Pigs were slaughtered at 105 kg BW. Before the second vaccination, Iberian IC males showed higher growth rate (g/day), feed efficiency, NR (g/day) and efficiency of NR than the other groups (P 0.05). Growth rate and feed efficiency were higher in IC males than in the other groups for the whole experimental period (from the first vaccination to slaughter; P 0.05). NR efficiency was 0.177 on average. No significant effects of dietary CP were detected on performance. The NR was greater in pigs fed the 153 CP diet (17 to 37%; P > 0.05). Lean components of carcass (sirloin, loin and butt lean) were greater in IC males than in the other groups (0.001 < P < 0.05). There were no significant sex group × dietary CP interactions. Iberian IC males grew at higher rate, deposited more protein, and more efficiently, than Iberian SC males before the second vaccination against GnRH. Iberian IC females showed similar growth performance to SC males and intermediate protein deposition efficiency between IC and SC males. Despite the higher growth performance, protein deposition rate, and efficiency of protein deposition of IC males v. SC males, no significant differences in amino acid requirements were detected between them. ; Funded by European Union's Horizon 2020 research and innovation programme (Grant agreement 634476, project acronym TREASURE). The content of this paper reflects only the author's view, and the European Union Agency is not responsible for any use that may be made of the information it contains.

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasisand global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes mayoccur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors.In accordance with the TREASURE project global aim of enhancing sustainability of production systems for localpig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to testits usefulness to characterize several local European pig populations and their production systems. This approachhas been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian(Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed,faecal samples have been collected along different experiments performed in the TREASURE project targetingthe comprehension of a particular traditional production system (e.g. open-air farming), management practice,or the comparison of breeds. In all experiments, the metagenomics technique employed is the re-sequencing ofthe bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis isa promising approach for the characterisation of these local breeds, by allowing a deeper understanding of theirproduction systems and potentially allowing the development of new certification approaches. Preliminary resultswill be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreementno. 634476).

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasisand global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes mayoccur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors.In accordance with the TREASURE project global aim of enhancing sustainability of production systems for localpig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to testits usefulness to characterize several local European pig populations and their production systems. This approachhas been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian(Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed,faecal samples have been collected along different experiments performed in the TREASURE project targetingthe comprehension of a particular traditional production system (e.g. open-air farming), management practice,or the comparison of breeds. In all experiments, the metagenomics technique employed is the re-sequencing ofthe bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis isa promising approach for the characterisation of these local breeds, by allowing a deeper understanding of theirproduction systems and potentially allowing the development of new certification approaches. Preliminary resultswill be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreementno. 634476).

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasisand global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes mayoccur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors.In accordance with the TREASURE project global aim of enhancing sustainability of production systems for localpig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to testits usefulness to characterize several local European pig populations and their production systems. This approachhas been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian(Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed,faecal samples have been collected along different experiments performed in the TREASURE project targetingthe comprehension of a particular traditional production system (e.g. open-air farming), management practice,or the comparison of breeds. In all experiments, the metagenomics technique employed is the re-sequencing ofthe bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis isa promising approach for the characterisation of these local breeds, by allowing a deeper understanding of theirproduction systems and potentially allowing the development of new certification approaches. Preliminary resultswill be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreementno. 634476).

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasisand global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes mayoccur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors.In accordance with the TREASURE project global aim of enhancing sustainability of production systems for localpig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to testits usefulness to characterize several local European pig populations and their production systems. This approachhas been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian(Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed,faecal samples have been collected along different experiments performed in the TREASURE project targetingthe comprehension of a particular traditional production system (e.g. open-air farming), management practice,or the comparison of breeds. In all experiments, the metagenomics technique employed is the re-sequencing ofthe bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis isa promising approach for the characterisation of these local breeds, by allowing a deeper understanding of theirproduction systems and potentially allowing the development of new certification approaches. Preliminary resultswill be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreementno. 634476).

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasis and global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes may occur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors. In accordance with the TREASURE project global aim of enhancing sustainability of production systems for local pig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to test its usefulness to characterize several local European pig populations and their production systems. This approach has been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian (Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed, faecal samples have been collected along different experiments performed in the TREASURE project targeting the comprehension of a particular traditional production system (e.g. open-air farming), management practice, or the comparison of breeds. In all experiments, the metagenomics technique employed is the resequencing of the bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis is a promising approach for the characterisation of these local breeds, by allowing a deeper understanding of their production systems and potentially allowing the development of new certification approaches. Preliminary results will be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreement no. 634476).

The study of gut microbiota and its effects on hosts has emerged as an essential component of host homeostasis and global efficiency. Besides host's influence on gut microbiota, major quantitative and qualitative changes may occur in the composition of the intestinal microbiota due to the influence of diet and other environmental factors. In accordance with the TREASURE project global aim of enhancing sustainability of production systems for local pig breeds, the objective of our task was to conduct a pilot characterisation of intestinal microbiota in order to test its usefulness to characterize several local European pig populations and their production systems. This approach has been applied to populations belonging to the following European traditional breeds: Gascon (France), Iberian (Spain), Krskopolje (Slovenia), Mangalitsa (Serbia), Moravka (Serbia) and Turopolje (Croatia). For each breed, faecal samples have been collected along different experiments performed in the TREASURE project targeting the comprehension of a particular traditional production system (e.g. open-air farming), management practice, or the comparison of breeds. In all experiments, the metagenomics technique employed is the re-sequencing of the bacterial 16S in an Illumina MiSeq system. Overall, the results have shown that the gut microbiota analysis is a promising approach for the characterisation of these local breeds, by allowing a deeper understanding of their production systems and potentially allowing the development of new certification approaches. Preliminary results will be summarized in this communication. Funded by European Union's H2020 RIA program (Grant agreement no. 634476).