{"product_id":"using-selection-indices-to-improve-lactation-curve-parameters-in-egypt-von-amin-amin","title":"Using Selection Indices to Improve Lactation Curve Parameters in Egypt","description":"\u003cp\u003e- The buffalo's number in Egypt is estimated to by 3.9 million. - They are one of the main dairy animals in Egypt; their contribution to the country¿s milk production is nearly 45.5 % (FAOSTAT, 2013). - Aims: - Investigating genetic improvement possibilities for TD milk yield traits and their lactation curve parameters. - Determining genetic and phenotypic trends for TD milk, fat and protein yields applying a Random Regression Model. - Generating a S.I. for milk production and persistency using eigenvalue and eigenvector indices derived from Random Regression Model. - Results: - Genetic selection for curve parameters (initial, persistency and maximum milk yield) would improve total milk yield traits especially persistency. - Both of the first and the second eigenvalues explained 96% of the variation in improving milk yield and persistency. - Selection based on the second individual eigenvector index is expected to better improve the persistency. - If the breeding goal is to improve persistency and milk yield, then using the 2nd eigenvector index (I*2) with a relative economic value of 1:25 is recommended.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659839870\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783659839870","offer_id":39434729324637,"sku":"9783659839870","price":67.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/88337170-ee8e-4d09-a94a-7826eae49ceb.jpg?v=1776142652","url":"https:\/\/shop.autorenwelt.de\/en\/products\/using-selection-indices-to-improve-lactation-curve-parameters-in-egypt-von-amin-amin","provider":"Autorenwelt Shop","version":"1.0","type":"link"}