Scientific feeding experiments with hybrid pigs of the type Hungahib in the fattening period between 30 and 100 kg were carried out with one repetition as part of a joint international experiment. Feed, nutrient and energy expenditure were tested on 3 levels of energy supply (100 : 85 : 70%) and 3 levels of protein supply (18 : 16 : 14%) in the fattening period between 30 and 60 kg and 16 : 14 : 12% in the fattening period between 60 and 100 kg). In addition to this, parallel metabolism experiments were carried out to determine the digestibility and the N-balance of the feed mixtures used. The cost of feeding was also taken into consideration. The best results with regard to the fattening performance and the minimising of feed cost were achieved with the following ration type: (Table: see text). The fattening performance with this ration type was 712 g average daily live weight gain in the range between 30 and 60 kg live weight in the 1st fattening experiment and 601 g in the 2nd fattening experiment. A classification of the expenditure values has been attempted in the 10th contribution to this series of publications dealing with the total results of the joint international experiment.
Institutes from 5 CMEA countries took part in complementary joint investigations in order to ascertain the variance in energy and protein requirement and parameters of nutrient and energy metabolism with such fattening pigs as test animals as characterise the prospective breeding development in each of the countries and in order to establish the bases for the critical revision of the norms of energy and protein requirement for fattening pigs and, if necessary, their more precise determination. The most important conclusion drawn from the comparative assessment of the results presented in 9 articles is that due to wide variations in the energy and protein requirement values between the individual investigators as well as within the institutions themselves, norms of energy and protein requirement for fattening can only be adopted between countries when adequate investigations under the specific conditions of the individual countries justify this.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.