The morality of the Lambs is conditioned by different factors on the one hand to the animal (sheep pregnant or given birth), environment and food, during the post natal period, in your opinion what are the most important in order variables that cause sizeable losses for sheep farming in arid regions (fairly harsh weather conditions)?
Douh,
Please examine the following links:
http://www.mdpi.com/2077-0472/4/4/288/pdf
http://dge.stanford.edu/SCOPE/SCOPE_38/SCOPE_38_4.2_Perry_155-194.pdf
http://www.sbz.org.br/revista/artigos/66266.pdf
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3671427/
http://nptel.ac.in/courses/105101010/downloads/Lecture07.pdf
http://c.ymcdn.com/sites/www.agrifoodskills.net.au/resource/resmgr/fellowship_reports/iss_fel_report_r_knights_low.pdf
http://nopr.niscair.res.in/bitstream/123456789/11071/1/IJTK%2010%281%29%20102-113.pdf
http://sapplpp.org/aboutus/thematicfocus/small-ruminant-rearing
http://www.fao.org/docrep/004/x6532e/x6532e02.htm
http://ageconsearch.umn.edu/bitstream/47676/2/8-A-Suresh.pdf
https://www.nabard.org/english/animal_sheep.aspx
http://www.cswri.res.in/regional_stations_arid_region_campus_bikaner.asp
http://vikaspedia.in/agriculture/livestock/sheep-and-goat-farming/sheep-farming
http://goatandsheepfarming.blogspot.in/
http://www.infonet-biovision.org/default/ct/269/livestockSpecies
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300037
http://www.ajas.info/upload/pdf/18_184.pdf
birth weight, milking and mothering ability of dam, management conditions
There are several, but the most important is heat stress and nutrricional
Managerial factors including climatic conditions (cold vs hot environment), food, and others.
Infectious causes (like Brucellosis, Clostridium, ......) causing death of the newborns at or shortly after birth (still birth).
Dystocia (lambing problems) can be a significant cause of lamb mortality.
For proper management please visit:
https://pubs.ext.vt.edu/410/410-026/410-026.html
Being sure that the lambs get the Ewe's colostrum, administering C&D anti-toxin and an antibiotic like Excede (Naxcel/Ceftiofur; a cephalosporin), and be sure to tube-feed those animals that are not perambulate enough to feed on their own. These things help.
Use of banamine to help keep fevers down. And metronidazole as well. Heat lamps will help with warmth as young sick lambs tend to crawl away off into a corner alone - so you want to keep them warm.
http://www.scopemed.org/fulltextpdf.php?mno=179863
According to me live weight at birth
In my opinion the most important factors are lambs birth weight, quantity and quality of colostrum intake, lambs hypothermia and diseases.
The following links may help you:-
1. http://www.pakjas.com.pk/papers%5C1195.pdf
2. http://www.professionalanimalscientist.org/article/S1080-7446(15)31987-2/pdf
3. http://www.sciencedirect.com/science/article/pii/S1080744615319872
4. http://www.ansci.wisc.edu/extension-new%20copy/sheep/Publications_and_Proceedings/Pdf/Nutrition%20and%20Health/Lamb%20mortality%20and%20causes.pdf
I think good management in farm reduce lambs loses , and make lambs arrived to weaning easley.
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