Production Traits Influencing the Individual Feed Conversion Ratio
نویسندگان
چکیده
منابع مشابه
The effect of individual selection on improving feed conversion ratio of rainbow trout (Oncorhynchus mykiss) F1 progenies
The purpose of breeding is to improve the quantity and quality of the desired characteristics in cultured species in the next generations. Individual selection is a simple and practical way to provide a quick response in improving high heritability traits for breeding most species in aquaculture. At first step, in Yasouj cold water fishes breeding research Center, in order to conducting selecti...
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Although the feed-conversion ratio is recognized as a prominent indicator of profitability for pork producers, only 212 (50.7%) of 418 producers who were asked the feed-conversion ratio for finisher pigs provided a response during the USA National Animal Health Monitoring System 1995 National Swine Study. Of these, 126 (59.4%) producers furnished a feed-conversion ratio which they characterized...
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We investigated the effect of selection for 4-wk feed conversion ratio (FCR) on genetic improvement of FCR, BW, weight gain (WG), feed intake (FI), and residual FI (RFI) in Japanese quail. The F line was selected for reduced FCR and the C line was maintained as a randombred control. In each generation, 35 sires and 70 dams were used as parents for the next generation. Three generations of selec...
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Different possibilities to reduce the feed conversion ratio (FCR) both in fatteners and females are discussed. The dietary factor having the largest impact on the FCR in fatteners is the energy concentration. Within practical margins, an increase with 0.5 MJ DE/kg leads to a decrease of the FCR with 0.15-0.20 points. The fibrous rabbit diets can be made more energy dense by using fat or oil ric...
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The aim of this study was to determine the effect of animal management and farm facilities on total feed intake (TFI), feed conversion ratio (FCR) and mortality rate (MORT) of grower-finishing pigs. In total, 310 batches from 244 grower-finishing farms, consisting of 454 855 Pietrain sired pigs in six Spanish pig companies were used. Data collection consisted of a survey on management practices...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1977
ISSN: 0032-5791
DOI: 10.3382/ps.0560912