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首页> 外文期刊>African Journal of Biotechnology >Influence of environmental factors on birth weight variability of indigenous Serbian breeds of sheep
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Influence of environmental factors on birth weight variability of indigenous Serbian breeds of sheep

机译：环境因素对塞尔维亚本土绵羊品种出生体重变异的影响

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摘要

The present investigation was carried out to study the influence of environmental factors on the birth weight variability of two breeds of sheep.?Animals used in this research were taken from the Pirot and Svrljig indigenous sheep breeds. The data were collected from 1999 to 2009 and were analyzed to determine the effect of the year and season, age of the lamb, weight of the lamb, birth type and sex on the birth weight of lambs. Both sheep breeds were managed in the same farm and under the same farm conditions. Statistical analysis was performed by using GLM procedure of SAS statistical package program. Results showed that young (2 to 3 years) and old (6 to 7 years) mothers gave birth to lighter lambs, while sheep in the middle age (4 to 5 years) gave birth to lambs with the heaviest body weight. However, the differences were respectively significant (P 0.05). The values of birth weight observed for quite a number of years ranged from 3.27 to 3.52 kg in Pirot and 3.34 to 3.51 kg in Svrljig breed (P < 0.01). Lambs born in the spring-summer season has the heaviest body weight at birth. Conversely, the significant difference (P < 0.05) can only be interpreted as the factor of food source.
机译：本研究旨在研究环境因素对两种绵羊出生体重变异性的影响。本研究中使用的动物取材于Pirot和Svrljig本地绵羊品种。收集了1999年至2009年的数据，并进行了分析，以确定年份和季节，羔羊年龄，羔羊体重，出生类型和性别对羔羊出生体重的影响。两种绵羊品种都在相同的农场和相同的农场条件下进行管理。采用SAS统计软件包程序的GLM程序进行统计分析。结果显示，年轻（2至3岁）和老（6至7岁）母亲生下了较轻的羔羊，而中年（4至5岁）的绵羊生下了体重最重的羔羊。然而，差异分别是显着的（P 0.05）。多年来观察到的出生体重值在皮罗特地区为3.27至3.52千克，在斯维尔吉格犬种中为3.34至3.51千克（P <0.01）。在春夏季节出生的羔羊出生时体重最重。相反，显着差异（P <0.05）只能解释为食物来源的因素。

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