Effects of Environmental Factors on Pre-Weaning Growth Traits in Zandi Lambs
نویسندگان
چکیده
منابع مشابه
Inbreeding effects on lamb pre-weaning growth traits and survival in three Iranian sheep breeds
The present study was performed to study the effect of inbreeding on the pre-weaning growth traits including the birth weight (BW), weaning weight (WW), average daily gain (ADG), Kleiber ratio (KR) and lamb survival from birth to weaning (SUR) in Baluchi, Iran-Black and Zandi sheep. Significant positive inbreeding trends were found only for Baluchi and Iran-Black breeds as 0.038 and 0.278, resp...
متن کاملPhenotypic and Genetic Parameters of Pre-Weaning Growth Traits in Gentile di Puglia Lambs
Data from 1731 Gentile di Puglia lambs, sired by 65 rams over a 5-year period were analyzed by a mixed model to estimate the variance components for heritability. The considered growth traits were: birth weight (BW), weight at 30 days of age (W30) and average daily gain from birth to 30 days of age (DG). Year of birth, sex of lamb, type of birth (single or twin), dam age at lambing and farm wer...
متن کاملPre-weaning growth, carcass traits and sensory evaluation of Corriedale, Corriedale Pampinta and Pampinta lambs
Birth weight (BW), weaning weight (WW), preweaning weight gain (PWG), carcass traits and sensory evaluation of meat of Corriedale (C), Pampinta (P) and their Fl crossbred (P C) lambs were studied from 1991 to 1993 at the Agricultural Experimental Station of Anguil (La Pampa, Argentina). Each year the trial involved an average of 35 C, 43 P and 36 P C. Data were analyzed for year, genotype, sex ...
متن کاملمقایسه مدل های خطی و آستانه‌ای در برآورد پارامترهای ژنتیکی و فنوتیپی صفات تولید مثلی در گوسفند نژاد زندی
Reproductive records of 5327 Zandi ewes were collected from a research flock at the Zandi sheep breeding from Varamin station during 1991-2011. Genetic parameters were estimated for main traits such as conception rate (CR), number of lambs born (NLB), number of lambs at weaning (NLW) and the composite traits including number of lambs born per ewe exposed, number of lambs weaned per ewe exposed,...
متن کاملenvironmental effects of gol-e-gohar iron ore mine on groundwater of the area
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
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ژورنال
عنوان ژورنال: Journal of Animal and Veterinary Advances
سال: 2010
ISSN: 1680-5593
DOI: 10.3923/javaa.2010.903.906