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Performance,body fat reserves and plasma metabolites in Brown Swiss dairy cows: Indoor feeding versus pasture‐based feeding 
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下载免费PDF全文 H.‐J. Frey J. J. Gross R. Petermann S. Probst R. M. Bruckmaier P. Hofstetter 《Journal of animal physiology and animal nutrition》2018,102(2):e746-e757
Feeding dairy cows indoors or on pasture affects not only labour, machinery and housing costs, but also animals’ performance and metabolism. This study investigates the effects of indoor feeding (IF) with a partial‐mixed ration (PMR) versus pasture‐based feeding (PF) on milk production, fertility, backfat thickness (BFT), body weight (BW) loss and energy metabolism of Brown Swiss (BS) dairy cows with similar genetic production potential. The IF herd consisted of 13 cows fed a PMR composed of maize and grass silage plus protein concentrate according to each cow's requirements. The PF herd consisted of 14 cows offered barn‐ventilated hay ad libitum after calving from January until March and grazed on semi‐continuous pastures during the vegetation period. The IF cows produced more energy‐corrected milk (ECM) per standard lactation (9,407 vs. 5,960 kg; p < .01), more milk fat (378 vs. 227 kg; p < .01) and milk protein (326 vs. 215 kg; p < .01). The calving interval (377 vs. 405 days; p < .01) and time empty (86 vs. 118 days; p < .01) were shorter in the PF compared to IF, possibly also due to different selection criteria for maintaining the respective seasonal calving rhythm. The empty body fat loss calculated according to BCS until its nadir was higher in IF cows (IF: 10.4 vs. PF: 4.8 MJ/day; p < .01), but no differences were noted in total body fat loss estimated via BFT (p = .24). However, PF had lower blood glucose concentration at all investigated time points, but no differences occurred in serum non‐esterified fatty acid and β‐hydroxybutyrate concentrations post‐partum. In conclusion, BS cows were equally well suited for the IF with PMR and the PF system investigated here without developing a prominent metabolic load despite differences in nutrient supply. As such, investigated BS dairy cows in our trial seem to have a high capacity for metabolic adaptation to different production systems. 相似文献
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Baumgarte J Dayen M Hies J Petermann S Maiworm K 《DTW. Deutsche tier?rztliche Wochenschrift》2007,114(4):149-152
The authors report on the recent situation regarding the Animal Welfare Regulation of farmed Animals, which now has additional requirements for hen and pig husbandry, introduced by the amending regulation from 1st August 2006. In particular they describe, which parts of the Council Directive 91/630/EEC of 19th November 1991 with minimum standards for the protection of pigs is originally implemented and where the national legislation demands higher animal welfare standards. 相似文献
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Hofstetter P Steiger Burgos M Petermann R Münger A Blum JW Thomet P Menzi H Kohler S Kunz P 《Journal of animal physiology and animal nutrition》2011,95(6):717-729
This study compared productivity of dairy cows with different body weight (BW), but a constant ratio of maintenance to production requirements in their first lactation, in a pasture-based production system with spring calving. Two herds, Herd L (13 and 14 large cows in 2003 and 2004 respectively; average BW after calving, 721 kg) and Herd S (16 small cows in both years; 606 kg) [Correction added after online publication 14 January 2011: 16 small cows in both years; 621 kg was changed to 16 small cows in both years; 606 kg], all in their second or following lactations, were each allocated 6 ha of pasture and rotationally grazed on 10 parallel paddocks with equal herbage offer and nutritional values. Winter hay, harvested from the same pastures, was offered ad libitum in the indoor periods in a tied stall barn. Each herd received, per lactation and year, approximately 2000 kg dry matter (DM) of concentrates and of fodder beets, equally distributed to every individual. Indoors, the L-cows ingested more DM than the S-cows (18.7 vs. 16.3 kg DM/cow per day; p < 0.01), but DM intake per 100 kg of metabolic BW was similar (13.0 vs. 13.1 kg DM/cow per day). Estimates based on the n-alkane technique gave similar results on pasture (17.9 vs. 15.5 kg DM/cow per day; p < 0.001). Roughage intakes per 100 kg of metabolic BW, at 13.5 kg DM/cow per day, were similar. Mean annual yield of energy-corrected milk (ECM)/ha was slightly higher for the S-herd than the L-herd (13,026 vs. 12,284 kg) but was associated with a higher stocking rate (on average +20%) for the S-herd. Feed conversion efficiency (1.2 vs. 1.3 kg ECM/kg DM intake) and overall milk production efficiency (45.3 vs. 47.3 kg ECM/kg metabolic BW) were similar in L- and S-cows. Thus, both dairy cow types were equally efficient in utilising pasture-based forage. 相似文献
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S Petermann G Glünder U Heffels-Redmann K H Hinz 《DTW. Deutsche tier?rztliche Wochenschrift》1989,96(5):271-277
Between 1982 and 1985 the cadavers of 50 Guillemots (Uria aalge), 41 Kittiwakes (Rissa tridactyla), 26 Herring Gulls (Larus argentatus) and 34 Black-headed Gulls (Larus ridibundus) were examined pathological, bacteriological and virological. The probable cause of death was established. Parasitosis were particularly prevalent in Herring Gulls (49%), where the main infection--as in Black-headed Gulls--was with Cestoides. In Kittiwakes and Guillemots mainly Spiruroideae were recorded. The commonest bacterium isolated in organs and intestinal tract was Escherichia coli, followed by Aeromonas hydrophila and Clostridium perfringens. Salmonella were found in the organs of 5% and in the intestinal tract of 3% of the birds. The species of Salmonella most frequently isolated was Salmonella typhimurium varieties copenhagen. Also recorded were Yersinia intermedia Serovar 0:17 (1x), Pseudomonas spp. (2x), bacteria of the Haemophilus-Pasteurella-Actinobacillus group (1x), Pasteurella multocida (2x), Moraxella septicaemiae (1x), Campylobacter spec. (1x), Mycoplasma spec. (6x), DNase positive Staphylococcus spec. (4x) and Streptococcus spec. (6x). Less in evidence among the birds examined were fungus diseases with Aspergillus spec. (4x) and Blastomyces spec. (4x). As for viruses one Guillemot was found to have an Adenovirus and another one to have a Paramyxovirus. From one of the Herring Gulls there also was isolated a Paramyxovirus, from a second one to a Reovirus. Three other species isolated have get to be identified. The chief cause of sickness and death in the Guillemots was oil-contamination. The majority of the examined Kittiwakes and Herring Gulls were victims of pathogenic agents. Many of the Black-headed Gulls died through traumata as gunshots or road traffic etc. In order to establish the causes of sickness and death in seabirds and to ascertain the importance of the various species as possible carriers of infectious diseases, a systematic series of investigation will be necessary. Without this it will not be possible to assess their epidemiological relevance for other wild birds, domestic poultry and humans. 相似文献
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In previous studies, the embryo lethality assay (ELA) discriminated between virulent and avirulent avian Escherichia coli isolates, and also proved to be highly correlated with mortality and morbidity results of the intravenous (IV) challenge model. In the current study, the same 20 avian E. coli isolates were used in subcutaneous (subQ) and intratracheal (IT) chicken challenge models in order to determine whether the results from the prior ELA challenges and/or the IV challenge model correlate with these models. The correlation observed between the two previous ELA trials and the combined mortality/morbidity percentages of the subQ challenge model were r = 0.792, P > 0.0001 for the first ELA trial and r = 0.738, P = 0.0002 for the second ELA trial. The IV challenge results were more highly correlated with the subQ challenge results (mortality/morbidity comparison, r = 0.894, P < 0.0001). The IV challenge mortality results were slightly correlated (r = 0.4810, P=0.0319) with the IT challenge results. Several of the isolates differed in their ability to produce mortality and/or morbidity with the different challenge models. The mortality/morbidity results of the IV and subQ challenges and the mortality results of the ELA were all positively correlated with the ability of an E. coli isolate to produce Colicin V (ColV) (r = 0.7131, P = 0.0004). The IT mortality results were slightly correlated with the production of ColV (r = 0.455, P = 0.049). The IT challenge results were only slightly correlated with resulting IV mortality and ColV production. Previous results indicate that the ELA correlates extremely well with the IV challenge model. The current study demonstrates that ELA also correlates well with the subQ challenge model. Overall, the conclusion of this study is that the ELA, IV, and subQ challenge models similarly demonstrate the ability to discriminate between virulent and avirulent avian E. coli isolates. 相似文献
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The isolation of 14 known triterpenoids and phytosterols from the trunk bark of Maquira coriacea, and complete spectral data of a cardenolide, k-strophanthin-beta (1), are reported. 相似文献