Influence of SUB-PRO probiotic on meat productivity of broiler chickens

D. Nikitchenko, V. Nikitchenko, D. V. Andrianova, Ekaterina O. Ristsova, K. M. Kondrashkina
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Abstract

We studied dynamics of live weight and morphological composition of carcasses in Ross 308 chickens at 1-, 21-, 28-, 34-, 38- and 42-day ages when SUB-PRO probiotic was included in the diet instead of Maxus G feed antibiotic in amount of 100 g/ton of feed. By the age of 42, chickens in the control group (I) reached a live weight of 2234 28.4 g, chickens in the experimental group (II) - 2329 27.3 g, and chickens who took feed antibiotic (III) - 2320 33.4 g. Live weight of chickens of the II group by the age of 42 days exceeded the I group by 95 g or 4.25 % (P 0.05), the III group - by 86 g or 3.85 %. In terms of carcass weight, the experimental group exceeded the control group by 4.60 % (P 0.05), group III - by 4.53 %. The meat productivity of chickens taking antibiotic was not studied further, since that had no practical significance. Over the entire period of rearing, the average daily gain in live weight in control chickens was 52.20 g, in the experimental chickens - 54.46 g. The relative muscle weight in broiler carcasses of the experimental group increased from 55.34 to 66.37 %v from 1 to 42 days of age, while the relative bone weight decreased from 33.23 to 16.78 %. By the age of 42, absolute muscle and bone weight had 123.47- and 51.91-fold increase, respectively, in comparison with diurnal weight. The data of anatomical cutting of chicken carcasses showed that, in terms of muscle and bone content, the most valuable were: breast - 84.63 and 8.25 %, thigh - 75.66 and 12.54 %, respectively; less valuable: drumstick - 67.86 and 20.98 %, wing - 50.58 and 33.53 %, respectively. Diameter of muscle fibers of superficial pectoralis muscle in 42-day-old broilers was 55.20 m; water content - 75.10 %, fat - 1.60 %, protein - 22.31 %. In terms of microbiological parameters, carcass meat meets the requirements of GOST 31468-2012 interstate standard. The inclusion of SUB-PRO probiotic in chicken diet instead of antibiotic does not reduce productivity, but excludes the negative consequences of antibiotic use.
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亚pro益生菌对肉鸡产肉能力的影响
我们研究了在1日龄、21日龄、28日龄、34日龄、38日龄和42日龄的Ross 308鸡的活重和胴体形态组成的动态,当在日粮中加入SUB-PRO益生菌而不是100克/吨饲料的Maxus G饲料抗生素时。到42岁时,对照组(I)的鸡的活重达到2234 28.4克,实验组(II)的鸡达到2329 27.3克,服用饲料抗生素(III)的鸡为2320 33.4克。到42天时,II组的鸡活重超过I组95克,即4.25%(P 0.05),III组86克,即3.85%。在胴体重量方面,实验组比对照组高4.60%(P 0.05),III组高4.53%。服用抗生素的鸡的产肉能力没有得到进一步的研究,因为这没有实际意义。在整个饲养过程中,对照鸡的平均日增重为52.20g,实验鸡为54.46g。实验组肉鸡胴体的相对肌肉重量从55.34%v增加到66.37%v,而相对骨骼重量从33.23%v减少到16.78%。到42岁时,与白天体重相比,绝对肌肉和骨骼重量分别增加了123.47和51.91倍。鸡胴体解剖切割数据显示,就肌肉和骨骼含量而言,最有价值的是:胸脯84.63%和8.25%,大腿75.66%和12.54%;价值较低:鸡腿分别为67.86和20.98%,翅膀分别为50.58和33.53%。42日龄肉鸡胸肌浅层肌纤维直径为55.20m;水分含量为75.10%,脂肪含量为1.60%,蛋白质含量为22.31%。在微生物参数方面,胴体肉符合GOST 31468-2012州际标准的要求。在鸡肉饮食中加入SUB-PRO益生菌而不是抗生素不会降低生产力,但排除了使用抗生素的负面后果。
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审稿时长
12 weeks
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