In this study, nutritional components that are obtained during poultry slaughtering having significance with respect to processing into animal feeds were investigated. By-products obtained during poultry slaughtering are considered very valuable raw materials for production of highly valuable animal feeds and energetic feeds. Recognition of chemical and physical characteristics of the raw materials represents essential prerequisite for conduction of any technological process, for proper raw materials handling as well as for the equipment and machines design that are necessary for acceptance and processing of the inedible slaughterhouse by-products. Authors have found that the nitrogen complex of the examined raw materials contains predominantly proteins. Digestible nitrogen for all investigated raw materials equals approximately with total nitrogen content, indicating that all proteins from these raw materials are accessible for utilization in animal organism, with exception of feathers that need special technological processing. Basic chemical composition, nitrogen fractions and amino acid composition of the inedible by-products from poultry slaughterhouses indicate that the processing of these raw materials could be directed into production of swine and pet feeds production, as well in production of bio fuels and biogas. Blood and feathers anyhow represent significant protein source, and soft wastes, heads and legs, as well as the mixed raw material, besides as protein source, can be regarded as raw fat source. .
Abstract:One of the by-products of corn processing which can succesfully be used in poultry nutrition is livestock meal. In this trial corn meal was investigated, meal in two form: non-extruded (T1 and T2) and extruded (T3 and T4) as a replacement of cracked corn (K) in the amount of 100% (T1 and T3) and 50% (T2 and T4). Investigation was carried out in 4 repetitions, 75 chickens of Arbor Acres x Ross 308 hybrid in each group. Trial lasted 42 days. Chickens were fed three standard mixtures (starter, grower and finisher).Investigation demonstrated that group of chickens of treatment T3 realized the best final body masses (2254g), followed by chickens in treatment T4 (2173g), chickens of group T2 (2112g), K group (2106 g), and the worst results were established in chickens of group T1 (2103g). It was established that differences in final body mass of chickens from group T3 in relation to chickens from groups T1, T2, T4 and were statistically highly significant (P<0,001). Statistically significant differences (P<0,05) were established between body masses of chickens from group T4 in relation to T1, T2 and K group. Mortality of chickens was as followes: K-3,64%, T1-2,50%, and T2-5,00%, T3-6,39%, and T4-3,33%. Feed conversion in all investigated groups was almost identical (K-1,91; T2-,93; T3-1,93; T4-1,94) with the exception of T1 with 1,97. In regard to production index (PI), the best results were realized by group of chickens T3 (261), followed by chickens T4 (258), K (253), and the worst results were established in chickens of groups T1 (248) and T2 (248).
The aim of this paper was to investigate the carcass and breast meat (nutritional, technological and sensory) quality of chickens (line ROSS 308) fed extruded corn. It was concluded that a diet with extruded corn increases chilled carcass weight and the share of breast meat in chilled carcass. Also, the breast meat of experimental group contains more protein and less free fat comparing to the control group. Based on the parameters and criteria for defining the quality of chicken breast meat (pH u and L*) revealed that the meat of both groups averagely corresponded to PSE quality. According to results of sensory analyzes cooked breast meat of experimental group had significantly (P < 0.05) preferable juiciness and tenderness.
Aviculture enables acquiring significant amounts of highly valuable products such as meat and eggs, in the relatively short period of time. Production of fatty poultry practically presents the most intensive branch of the animal husbandry. The reproduction process is relatively short, which enables faster turnover of the engaged resources. Consequently, products which are cheaper compared to other kinds of meat are obtained, considering production expenses have a very important role. One of the ways to influence economic results is the use of extruded feed. This way enables the achievement of lower wastage and better production results, influencing directly the economic results of the production in such a way. Research of the economic results of the production of fatty poultry is based on the determination of the total production cost, value of the production and the financial result. Calculation of these economic categories is based on the data gathered on the selected households. The results obtained show measurable differences in the use of the extruded feed compared to the classic feeding system
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.