Utjecaj smanjenja udjela dopunske krmne smjese na proizvodne pokazatelje SASSO pilića u ekološkoj proizvodnji

master's thesis

• Title (english): Effect of reducing high-protein supplement portion on production traits of free range grown sasso chickens
• Author: Vjekoslav Lončarić
• Mentor: Dalibor Bedeković (mentor)
• Committee member: Dalibor Bedeković (predsjednik povjerenstva)
• Committee member: Jasna Pintar (član povjerenstva)
• Committee member: Bruna Tariba (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Animal Nutrition); Zagreb
• Defense date and country: 2019-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Provedeno je istraživanje utjecaja različitih udjela dopunske krmne smjese na proizvodne
pokazatelje pilića u svrhu smanjenja cijene proizvodnje. U istraživanju je korišteno 90
jednodnevnih pilića hibrida SASSO, držanih na ispustima od trećeg tjedna starosti i zaklanih
nakon 83 dana tova. Ulazna masa pilića iznosila je 40 grama. Pilići su bili razmješteni u tri
odvojene skupine koje su hranjene krmnim smjesama s različitim udjelom proteina i čiji se
prirast mjerio tjedno. Spol je determiniran kod klanja, nakon čega je izvršen rasjek i vaganje
pojedinih dijelova trupa. Prosječne mase trupova iznosile su 2045,5; 2162,33; 2059,67 g za
kontrolnu (K), prvu (P1), odnosno drugu pokusnu skupinu (P2) te između njih nije bilo
statistički značajne razlike. Izračunom razlike između prihoda od proizvedenog pilećeg mesa i
troška krmne smjese dobiveni su iznosi od 1326,4; 1716,4; 1698 HRK za K, P1, odnosno P2
skupinu čime se zaključuje najviša isplativost hranidbenog tretmana P1 skupine.

Abstract (english)

Experiment was conducted to assess the effect of reducing high-protein supplement portion
in feed mixtures of slow-growing SASSO chickens on their growth performance and carcase
traits with the aim of lowering the price cost of free-range chicken meat production. The
experiment was performed on 90 day-old SASSO chickens weighing 40 g, and reared in
outdoor cages after first three weeks of raising indoors. Chickens were divided into 3 feeding
groups (K, P1, P2) each receiving different levels of crude protein. They were weighed on a
weekly basis and slaughtered after day 83. Sex was determined at slaughtering, and hand
evisceration was performed after. The results given after carcase processing and analysis
showed no significant difference of carcase weight between groups (2045,5; 2162,33;
2059,67 g for K; P1; P2 respectively). Considering the income after the sale of chicken meat
(1326,4; 1716,4; 1698 HRK for K; P1; P2 respectively), feeding treatment of P1 group proved
the most profitable.

• Keywords: ekološki uzgoj peradi; proizvodni pokazatelji pilića; SASSO hibrid
• Keywords (english): organic chicken farming; production traits of chicken; SASSO chickens
• Language: croatian
• URN:NBN: urn:nbn:hr:204:620010
• Study programme: Title: Animal Nutrition and Feed Science; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane (magistar/ magistra inženjer/inženjerka hranidbe životinja i hrane)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2019-11-15 11:06:01