利用一些评价指标对高产种公猪和母猪的育肥力和后代肉质进行筛选

V. Khalak, O. Zhukorsky, O. M. Tserenyuk
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引用次数: 1

摘要

本研究的目的是研究幼白猪的育肥性和肉质,并利用一些评价指标确定高产种猪和母猪的选择标准。结果表明,对照群体100 kg大白猪幼猪在6 ~ 7节胸椎水平的脂肪厚度和冷藏胴体长度上分别比优良级的最低要求高出6.13%、32.25%和3.92%。通过育肥对照期平均日增重(91.7 g)、100 kg活重年龄(7.3 d)、6-7节胸椎脂肪厚度(3.4 mm)、冷冻胴体长度(1.7 cm)、冷冻胴体一半肉长度(2.7 cm),不同种间分化动物的泰勒指数(I组和III组)差异显著。根据saser - fredin指数,考虑到种内分化,在对照育肥期,II组仔猪的平均日增重比I组仔猪高4.03%,100 kg龄比I组仔猪高3.67%,冷藏胴体长度比I组仔猪高0.2%。育肥猪肉质与评价指标的两两相关系数为-0.710 (tr=10.24) ~ +0.844 (tr=20.98)。以Tyler指数(+5.03%)和Sazer-Fredin指数(+1.12%)分别为试验1组和试验2组仔猪增肥量最大。从这些组的幼猪获得额外产品的成本,假设在研究时每公斤活重的幼猪售价为47.5乌瓦赫。分别为+247.51和+55.42 UAH/动物。因此,选择肥育性和肉质优良的高产种猪和母猪的标准为Tyler指数- 214.89 ~ 242.85,Sazer-Fredin指数- - 3.018 ~ - 0.102。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Selection criteria for highly productive breeding boars and sows by fattening and meat qualities of their offspring using some evaluation indexes
The aim of the work is to study the fattening and meat qualities of young white pigs and to determine the criteria for selection of high-yielding breeding boars and sows using some evaluation indices. It was found that young pigs of large white breed of the controlled population at the age of 100 kg exceed the minimum requirements of the elite class by 6.13%, the thickness of the fat at the level of 6–7 thoracic vertebrae — 32.25% and the length of chilled carcass — 3.92%. Significant difference between animals of different intrabreed differentiation according to the Tyler index (groups I and III) was established by the average daily gain of live weight during the control period of fattening (91.7 g), age of 100 kg live weight (7.3 days), fat thickness at the level of 6–7 thoracic vertebrae (3.4 mm), length of chilled carcass (1.7 cm), length of bacon half of chilled carcass (2.7 cm). Taking into account the intrabreed differentiation according to the Sazer-Fredin index, it was found that young pigs of group II outperformed peers of I on average daily live weight gain for the period of control fattening by 4.03%, age of 100 kg — 3.67% and length of chilled carcass — 0.2%. The pairwise correlation coefficient between fattening and meat qualities of young pigs and evaluation indices ranges from –0.710 (tr=10.24) to +0.844 (tr=20.98). The maximum increase in additional products was obtained from young pigs of the first experimental group according to the Tyler index (+5.03%) and the second experimental group according to the Sazer-Fredin index (+1.12%). The cost of additional products obtained from young pigs of these groups, provided that the selling price per 1 kg of live weight of young pigs at the time of the study was 47.5 UAH. is +247.51 and +55.42 UAH/animal respectively. Thus, the criteria for selecting highly productive breeding boars and sows for fattening and meat qualities are the limits of the Tyler index 214.89–242.85, the Sazer-Fredin index — –3.018 — –0.102 points.
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