Author(s):

Sayed Rhaimullah Mushfiq

Abstract: Summer grazing is the most important factures which has effect on all parameters of sheep production. This research is field research and conducted to assess summer grazing effect of Sheep on percentage of Lamb production, oneness, twin and multiple. Six herd with summer grazing and Un-summer grazing from tow village and district were selected and the information related to this research was collected, analyzed, summarized and compared with scientific results. Oneness lamb percentage production in herd with summer grazing at turkey, Arabic and Gadic sheep increased gradually by 88.8%, 76% and 70%, and at Un-summer grazing the increase was 77.77%, 69.23 and 13.33% respectively. Therefore, different percentage at mentioned Breeds are gradually 11.03%, 6.87% and 13.33%. Lamb percentage production in population of sheep with summer grazing in turkey, Arabic and Gadic Sheep gradually 106.96%, 100% and 130% and at Un-summer grazing 87.9%, 84.6 and 116.6% received. Therefore, different percentage at mentioned Breeds are gradually 19.6%, 15.4% and 14.4%. Percentage of twin lamb production at herd with summer grazing in turkey, Arabic and Gadic sheep gradually 10.03%, 12% and 30% and at Un-summer grazing 5.05, 7.7% and 16.7% received. Therefore, difference percentage at mentioned Breeds are gradually 4.95%, 4.3% and 13.3%. Moreover Sheep with summer grazing has a lot of outstanding traits such as phenotype brightness, big eyes and tail, fitness, flushing and immune against to some diseases. Sheep holder with summer grazing has some superiority than Sheep holders with un- summer grazing such as shepherd holding, preparing and storing food for winter feeding, vaccination, castration, clip of ewe at proper time, spring salt prepare, good stable face to sun, cleaning floor of lamb at the on time, recording, continues relationship with another sheep holder and veterinarian doctors.

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