Wegner Marcin, Gesek Michał, Banaszak Mirosław, Adamski Marek, Wlaźlak Sebastian, Biesek Jakub
Department of Animal Breeding and Nutrition, Faculty of Animal Breeding and Biology, Bydgoszcz University of Science and Technology, 85-084 Bydgoszcz, Poland.
Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland.
Poult Sci. 2024 Dec;103(12):104344. doi: 10.1016/j.psj.2024.104344. Epub 2024 Sep 18.
After different vaccinations, the study aimed to assess carcass composition, meat quality, and the level of the infectious bursal disease antibody titers in broiler chickens. In the experiment, 4 (30 chicks per group, 120 total) groups of Ross 308 broiler chickens (males and females) were included. Then, they were vaccinated at the hatchery. Group I was immunized against infectious avian bronchitis (IB) and Newcastle disease (ND) using vaccine A (20 mL/100 birds) and vaccine B (20 mL/100 birds), respectively, with injectable vaccine C (0.2 mL/each) targeting Infectious bursal' and Marek's diseases (MD). Group II received the same vaccinations for IB and ND, with separate injectable D vaccines for MD (0.2 mL/unit) and E for infectious bursal' disease (0.2 mL/each). Group III was similarly vaccinated for IB and ND; however, they received only vaccine D (0.2 mL/each) for MD, and on d 23, vaccine F was administered via drinking water against Gumboro disease (0.05 mL/each). Group IV served as the control and was not vaccinated. Ten carcasses from each group on d 42 were taken for carcass composition analysis and meat quality, including pH, color, and water-holding capacity (WHC). During rearing, on d 14, 28, and 42, blood was collected to determine the level of antibodies against infectious bursal' disease. Additionally, hematocrit (HCT), hemoglobin (HGB), and red blood cells were analyzed. In group I, a higher bursa of Fabricius weight than in the other groups was found (P < 0.001), and the liver weight was lower compared to group II (P = 0.020). In breast muscle, the pH was higher in the control group than in group I (P = 0.036). Lightness (L*) in breast and leg muscles from group I was higher than in group II (P < 0.05). WHC was higher in group I than in group II (P = 0.025). The antibody titers of infectious bursal' disease was higher in group I on d 28 than in other groups (P < 0.05). Vaccine C (1 dose 0.2 mL/1 bird) of the reconstituted vaccine with the live recombinant virus strain vHVT013-69, not less than 3.6 - 5.0 log PFU) had a beneficial effect.
在进行不同疫苗接种后，该研究旨在评估肉鸡的胴体组成、肉质以及传染性法氏囊病抗体滴度水平。实验中纳入了4组（每组30只雏鸡，共120只）罗斯308肉鸡（公母皆有）。然后，它们在孵化场进行了疫苗接种。第一组分别使用疫苗A（20毫升/100只鸡）和疫苗B（20毫升/100只鸡）对传染性禽支气管炎（IB）和新城疫（ND）进行免疫，同时使用针对传染性法氏囊病和马立克氏病（MD）的注射用疫苗C（0.2毫升/只）。第二组对IB和ND进行相同的疫苗接种，分别使用针对MD的注射用疫苗D（0.2毫升/只）和针对传染性法氏囊病的疫苗E（0.2毫升/只）。第三组同样对IB和ND进行疫苗接种；然而，它们仅使用针对MD的疫苗D（0.2毫升/只），并且在第23天通过饮水给予针对传染性腔上囊病（法氏囊病）的疫苗F（0.05毫升/只）。第四组作为对照组，未进行疫苗接种。在第42天，从每组中选取10只鸡的胴体进行胴体组成分析和肉质检测，包括pH值、颜色和持水力（WHC）。在饲养期间，于第14天、28天和42天采集血液，以测定针对传染性法氏囊病的抗体水平。此外，还对血细胞比容（HCT）、血红蛋白（HGB）和红细胞进行了分析。在第一组中，发现法氏囊重量高于其他组（P < 0.001），且肝脏重量低于第二组（P = 0.020）。在胸肌中，对照组的pH值高于第一组（P = 0.036）。第一组胸肌和腿肌的亮度（L*）高于第二组（P < 0.05）。第一组的持水力高于第二组（P = 0.025）。在第28天，第一组传染性法氏囊病的抗体滴度高于其他组（P < 0.05）。含有活重组病毒株vHVT013 - 69（不少于3.6 - 5.0 log PFU）的重组疫苗C（1剂量0.2毫升/只鸡）具有有益效果。
