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The effect of beef tallow in lamb nutrition on fattening and carcass characteristics

Uticaj goveđeg loja u ishrani jagnjadi na tovne i klanične karakteristike

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2009
180.pdf (194.7Kb)
Authors
Ružić-Muslić, Dragana
Petrović, Milan P.
Bijelić, Zorica
Article (Published version)
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Abstract
Trial was carried out on 60 suckling lambs of Mis sheep population, divided into three groups. Beside milk, lambs consumed alfalfa hay and iso-protein concentrate mixtures (15% CP) ad libitum. Forage mixture I was of standard composition, whereas mixtures II and III contained 4 and 6% of beef tallow, respectively. Energy value of used mixtures I, II and III was 7,29, 7,71 and 7,94 MJ, respectively. Fattening duration was 60 days. Statistical processing of obtained data was performed using standard mathematical-statistical methods. Lambs on treatments I:II:III realized average daily gain of: 0,280 : 0,303 : 0,277 kg. Conversion of dry matter of diet was: 2,68: 2,58: 2,93 kg; of energy: 19,08 : 18,37 : 20,71 MJ NEM; of protein: 481 : 451: 514 g. Values of the meat yield of warm carcass were: 57,89 : 58,63 : 58,46%. The best production results in regard to gain, and feed conversion were realized by lambs on treatment with 4% of beef tallow in the mixtures.
Ogled je izveden na 60 neodbijene jagnjadi Mis populacije ovaca koji su bili podeljeni u tri grupe. Osim mleka, jagnjad su konzumirala seno lucerke i izoproteinske smeše koncentrata (15% SP) ad libitum. Krmna smeša I je bila standardnog sastava, dok su smeše II i III sadržavale 4, odnosno 6% goveđeg loja. Energetska vrednost korišćenih smeša I, II i III je bila 7,29, 7,71 i 7,94 MJ, respektivno. Trajanje tova je bilo 60 dana. Statistička obrada podataka je urađena standardnim matematičko-statističkim metodama. Jagnjad na tretmanima I:II:III su ostvarila prosečni dnevni prirast od 0,280 : 0,303 : 0,277 kg. Konverzija suve materije obroka je bila 2,68: 2,58: 2,93 kg, energije, 19,08 : 18,37 : 20,71 MJ NEM, proteina, 481 : 451: 514 g. Vrednosti za prinos mesa u toplom trupu su bile 57,89 : 58,63 : 58,46%. Najbolje proizvodne rezultate u pogledu prirasta i konverzije hrane su ostvarila jagnjad na tretmanu sa 4% goveđeg loja u smešama.
Keywords:
lambs / beef tallow / daily gain / conversion / meat yield/dressing percentage
Source:
Biotechnology in Animal Husbandry, 2009, 25, 5-6-1, 431-438
Publisher:
  • Institute for Animal Husbandry, Belgrade
Projects:
  • Razvoj održivih sistema stočarske proizvodnje u cilju dobijanja mleka i mesa sa osobinama funkcionalne hrane (RS-20042)

DOI: 10.2298/BAH0906431R

ISSN: 1450-9156

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URI
http://r.istocar.bg.ac.rs/handle/123456789/182
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