Causal effect of prolificacy on milk yield in dairy sheep using propensity score
نویسندگان
چکیده
منابع مشابه
Economic weights of fertility, prolificacy, milk yield and longevity in dairy sheep.
Economic weights have been estimated in two breeds (Latxa and Manchega) using economic and technical data collected in 41 Latxa and 12 Manchega dairy sheep flocks. The traits considered were fertility (lambing per year), prolificacy (number of lambs), milk yield (litres) and longevity (as productive life, in years). A linear function was used, relating these traits to the different costs in the...
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The study was carried out for a period of 150 days on 120 Holstein Friesian crossbred dairy cows between mid to late lactation to quantify the influence of body condition score (BCS) on yield and composition of milk. Total 12 dairy farms having same housing systems and holding at least 20 crossbred dairy cows per farm between mid to late lactation were selected for this study purposes. BCS of i...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2017
ISSN: 0022-0302
DOI: 10.3168/jds.2017-12907