TY  - JOUR
AU  - Grubić, G.
AU  - Novaković, Željko
AU  - Aleksić, S.
AU  - Sretenović, Ljiljana
AU  - Pantelić, Vlada
AU  - Ostojić Andrić, Dušica
PY  - 2009
UR  - http://r.istocar.bg.ac.rs/handle/123456789/203
AB  - Problems which relate to production, health and reproduction in herds of high yielding cows very often occur due to insufficient knowledge and monitoring of energy reserves in cow organisms. Many researches and practical experiences in this field indicate significant relation between body condition and achieved results in production. Body condition of heads of cattle in certain stages of production cycle is important parameter of applied nutrition, but also entire technological procedure. In countries with developed cattle production, evaluation of body condition has for several years been main component of production practice on farms. It is considered that condition is very reliable indicator of the nutrition status and energy balance in the organism. Body condition score is subjective and practical method which enables precise assessment of deposited fat in the cow organism by observing and touching previously determined body regions and fields. There is considerable variability of the condition of cows in different stages of production cycle. Body condition of high yielding cows often comes out of the frame of optimal values for certain stage of production cycle. Decrease of production, disorders in health condition and fertility of cows indicate the nature of relation between inadequate body condition and stated problems. Shape and strength of the relation between production results and body condition score confirms its reliability. This is all indication of the need for wider application of this evaluation system. Based on body condition score, beside other important factors in the production cycle, there is realistic possibility to achieve more efficient production of milk from the aspect of energy. Main purpose of this paper was to present how the application of methods for body condition score and its significance for production practice can be functional.
AB  - Postojeći problemi u proizvodnji mleka, rezultatima reprodukcije i zdravstvenom stanju visokoproizvodnih krava mogu da se dovedu u vezu sa primenjenom tehnologijom ishrane. Važno pitanje u tehnologiji ishrane visokomlečnih krava predstavlja količina raspoložive energije (hrana, depoi masti, mišići) u ključnim fazama proizvodnog ciklusa (period zasušenja i rane laktacije). Deficit energije u kritičnim periodima proizvodnog procesa može da dovede do ozbiljnih poremećaja u proizvodnji, zdravlju i reprodukciji U početnoj fazi proizvodnje mleka najkritičniji je period maksimalne dnevne proizvodnje. Negativan bilans energije najizraženiji je u vrhu laktacije. Visok gubitak energije na račun telesnih rezervi predstavlja veliko opterećenje za metabolizam krava. Obezbeđenje adekvatne količine energije je složen uslov za svaku fazu proizvodnog ciklusa. OTK je subjektivan metod koji vizuelno i opipavanjem vrednuje količinu potkožne telesne masti. OTK je koristan alat za upravljanje mlečnim stadom. Idealna telesna kondicija je rang koji je u funkciji toka i faze laktacije. Procena rezervi energije u organizmu utvrđena preko OTK u osnovi predstavlja hranidbeni status grla vrednovan preko deponovanog masnog tkiva, pri čemu telesni okvir i masa grla imaju sekundaran značaj. Jedan od sistema za OTK krava koji je značajan za praksu je američki Virdžinija sistem modifikovan po Edmodsonu. Sistem za OTK kreiran je u obliku mape (karte) za ocenu visokomlečnih krava. Mapa je precizno pripremljena za svaki telesni region i polje koji se može smatrati važnim u dodeli ukupne OTK krave. Tri velika telesna regiona (slabine, karlica i koren repa) podeljena su osam polja na telu krave (slabine imaju četiri polja; karlica ima tri polja; koren repa ima jedno polje). Svako telesno polje se posebno ocenjuje i koristi kao pokazatelj telesne kondicije. Svako grlo ocenjeno je individualno za promene nivoa ocene duž skale od 1 do 5. Kontinuirano se koristi povećanje od 0,25 delova poena. Ceo sistem OTK funkcioniše sa 17 nivoa u okviru ukupne skale ocena posmatrane u intervalu od minimalne ocene u iznosu 1 i maksimalne u iznosu 5. Ocena 1 pokazuje mršavu kondiciju. Ocena 5 pokazuje izrazito tovnu kondiciju. Svaka faza proizvodnog ciklusa ima svoju optimalnu ocenu. Pod normalnim uslovima krave treba da gube telesnu kondiciju najviše od 4 do 6 nedelja. U skromnim vrednostima telesna kondicija postepeno se vraća u periodu od 7 do 12 nedelje. Krave u prvih od 100 do 120 dana laktacije treba da imaju ocenu između od 2,50 do 3,25. Ocena telesne kondicije od 200 dana laktacije do perioda zasušenja treba da je između 2,75 i 3,50. Ishrana u periodu zasušenja treba da osigura ocenu između 3,25 i 3,50. Mogućnost vrednovanja energetskog (hranidbenog) statusa i efikasnosti ishrane visokomlečnih krava pomoću OTK preporučuje ovaj sistem za praktičnu primenu u tehnološkim programima na govedarskim farmama.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Evaluation of the body condition of high yielding cows
T1  - Ocena telesne kondicije visokomlečnih krava
VL  - 25
IS  - 1-2
SP  - 81
EP  - 91
DO  - 10.2298/BAH0902081G
ER  - 

@article{
author = "Grubić, G. and Novaković, Željko and Aleksić, S. and Sretenović, Ljiljana and Pantelić, Vlada and Ostojić Andrić, Dušica",
year = "2009",
abstract = "Problems which relate to production, health and reproduction in herds of high yielding cows very often occur due to insufficient knowledge and monitoring of energy reserves in cow organisms. Many researches and practical experiences in this field indicate significant relation between body condition and achieved results in production. Body condition of heads of cattle in certain stages of production cycle is important parameter of applied nutrition, but also entire technological procedure. In countries with developed cattle production, evaluation of body condition has for several years been main component of production practice on farms. It is considered that condition is very reliable indicator of the nutrition status and energy balance in the organism. Body condition score is subjective and practical method which enables precise assessment of deposited fat in the cow organism by observing and touching previously determined body regions and fields. There is considerable variability of the condition of cows in different stages of production cycle. Body condition of high yielding cows often comes out of the frame of optimal values for certain stage of production cycle. Decrease of production, disorders in health condition and fertility of cows indicate the nature of relation between inadequate body condition and stated problems. Shape and strength of the relation between production results and body condition score confirms its reliability. This is all indication of the need for wider application of this evaluation system. Based on body condition score, beside other important factors in the production cycle, there is realistic possibility to achieve more efficient production of milk from the aspect of energy. Main purpose of this paper was to present how the application of methods for body condition score and its significance for production practice can be functional., Postojeći problemi u proizvodnji mleka, rezultatima reprodukcije i zdravstvenom stanju visokoproizvodnih krava mogu da se dovedu u vezu sa primenjenom tehnologijom ishrane. Važno pitanje u tehnologiji ishrane visokomlečnih krava predstavlja količina raspoložive energije (hrana, depoi masti, mišići) u ključnim fazama proizvodnog ciklusa (period zasušenja i rane laktacije). Deficit energije u kritičnim periodima proizvodnog procesa može da dovede do ozbiljnih poremećaja u proizvodnji, zdravlju i reprodukciji U početnoj fazi proizvodnje mleka najkritičniji je period maksimalne dnevne proizvodnje. Negativan bilans energije najizraženiji je u vrhu laktacije. Visok gubitak energije na račun telesnih rezervi predstavlja veliko opterećenje za metabolizam krava. Obezbeđenje adekvatne količine energije je složen uslov za svaku fazu proizvodnog ciklusa. OTK je subjektivan metod koji vizuelno i opipavanjem vrednuje količinu potkožne telesne masti. OTK je koristan alat za upravljanje mlečnim stadom. Idealna telesna kondicija je rang koji je u funkciji toka i faze laktacije. Procena rezervi energije u organizmu utvrđena preko OTK u osnovi predstavlja hranidbeni status grla vrednovan preko deponovanog masnog tkiva, pri čemu telesni okvir i masa grla imaju sekundaran značaj. Jedan od sistema za OTK krava koji je značajan za praksu je američki Virdžinija sistem modifikovan po Edmodsonu. Sistem za OTK kreiran je u obliku mape (karte) za ocenu visokomlečnih krava. Mapa je precizno pripremljena za svaki telesni region i polje koji se može smatrati važnim u dodeli ukupne OTK krave. Tri velika telesna regiona (slabine, karlica i koren repa) podeljena su osam polja na telu krave (slabine imaju četiri polja; karlica ima tri polja; koren repa ima jedno polje). Svako telesno polje se posebno ocenjuje i koristi kao pokazatelj telesne kondicije. Svako grlo ocenjeno je individualno za promene nivoa ocene duž skale od 1 do 5. Kontinuirano se koristi povećanje od 0,25 delova poena. Ceo sistem OTK funkcioniše sa 17 nivoa u okviru ukupne skale ocena posmatrane u intervalu od minimalne ocene u iznosu 1 i maksimalne u iznosu 5. Ocena 1 pokazuje mršavu kondiciju. Ocena 5 pokazuje izrazito tovnu kondiciju. Svaka faza proizvodnog ciklusa ima svoju optimalnu ocenu. Pod normalnim uslovima krave treba da gube telesnu kondiciju najviše od 4 do 6 nedelja. U skromnim vrednostima telesna kondicija postepeno se vraća u periodu od 7 do 12 nedelje. Krave u prvih od 100 do 120 dana laktacije treba da imaju ocenu između od 2,50 do 3,25. Ocena telesne kondicije od 200 dana laktacije do perioda zasušenja treba da je između 2,75 i 3,50. Ishrana u periodu zasušenja treba da osigura ocenu između 3,25 i 3,50. Mogućnost vrednovanja energetskog (hranidbenog) statusa i efikasnosti ishrane visokomlečnih krava pomoću OTK preporučuje ovaj sistem za praktičnu primenu u tehnološkim programima na govedarskim farmama.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Evaluation of the body condition of high yielding cows, Ocena telesne kondicije visokomlečnih krava",
volume = "25",
number = "1-2",
pages = "81-91",
doi = "10.2298/BAH0902081G"
}

Grubić, G., Novaković, Ž., Aleksić, S., Sretenović, L., Pantelić, V.,& Ostojić Andrić, D.. (2009). Evaluation of the body condition of high yielding cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 25(1-2), 81-91.
https://doi.org/10.2298/BAH0902081G

Grubić G, Novaković Ž, Aleksić S, Sretenović L, Pantelić V, Ostojić Andrić D. Evaluation of the body condition of high yielding cows. in Biotechnology in Animal Husbandry. 2009;25(1-2):81-91.
doi:10.2298/BAH0902081G .

Grubić, G., Novaković, Željko, Aleksić, S., Sretenović, Ljiljana, Pantelić, Vlada, Ostojić Andrić, Dušica, "Evaluation of the body condition of high yielding cows" in Biotechnology in Animal Husbandry, 25, no. 1-2 (2009):81-91,
https://doi.org/10.2298/BAH0902081G . .

TY  - JOUR
AU  - Ružić-Muslić, Dragana
AU  - Grubić, G.
AU  - Petrović, Milan P.
AU  - Žujović, Miroslav
AU  - Muslić, H.
AU  - Nešić, Zorica
AU  - Marinkov, Gordana
AU  - Stojanović, Ljiljana
PY  - 2007
UR  - http://r.istocar.bg.ac.rs/handle/123456789/111
AB  - Research was carried out on experimental sheep farm of the Institute for Animal Husbandry, Belgrade-Zemun. Trial included 60 lambs - crosses of F1 generation of Pirot Pramenka x Württemberg x Ile de France weaned at the age of 60 days. Nutrition treatment included study of three concentrated mixtures which were different in protein source (sunflower, soy bean and fish meal), i.e. share of proteins non-degradable at the level of reticulo-rumen: 43 (I) : 51 (II) : 58%(III). The effect of stated treatment in intensive fattening of lambs was monitored through production parameters. Obtained data was processed using standard statistical analysis. Average body mass of lambs at the beginning of trial, in treatments I: II: III was: 18,08: 18,12: 18,17 kg. After fattening of 75 days, final body mass of lambs in analogous treatments was: 30,78 (I) 33,52 (II) 35,17 kg (III) and average daily gain: 0,169: 0,205 : 0,227 kg. Per kilogram of realized gain of lambs, in analogous treatments, the following was consumed: 4,54 : 3,71 : 3,30 kg of dry matter of diet; energy: 33,77: 29,37 : 26,25 MJ; total proteins: 732 : 596 : 549 g. Research demonstrated that protein source in concentrate mixtures used in nutrition of fattening lambs (i.e. share of nondegradable protein in total proteins)had significant effect on production parameters, and the best performance was registered in lambs on treatment with fish meal (share of NP was 58%).
AB  - U radu su prikazani rezultati uticaja različitih izvora proteina u obroku na intenzitet porasta i iskorišćavanje hrane i hranljivih materija kod odlučene jagnjadi u intenzivnom tovu. Ogled je izveden na 60 jagnjadi meleza F1 generacije pirotska pramenka x virtemberg x Il de frans, zalučenih sa 60 dana uzrasta, podeljenih u 3 grupe. Ishrana grla koncentrovanim smešama i lucerkinim senom je bila po volji. Ispitivan je efekat korišćenja tri smeše koje su se razlikovale u pogledu udela proteina nerazgradivog na nivou buraga: 43% (I), 51% (II) i 58% (III), što se postiglo korišćenjem različitih izvora proteina: suncokretove sačme (I) , sojine sačme (II) i ribljeg brašna (III), na proizvodne parametre jagnjadi u tovu. Statistička obrada dobijenih podataka je izvršena na računaru korišćenjem programa Stat.Soft, Inc. (2003). STATISTICA (data analysis software system), version 6, primenom standardnih matematičko - statističkih metoda. Jagnjad na tipovima ishrane I:II:III su ostvarila prosečan dnevni prirast: 0,169 : 0,205 : 0,227 kg. Konverzija suve materije (kg/kg prirasta) na analognim tretmanima je iznosila: 4,54 : 3,71: 3,30, energije (MJ NEM/kg): 33,77 : 29,37 : 26,25 , ukupnih proteina (g/kg): 732 : 596: 549 , PDIN (g/kg): 502 : 414 : 381 , PDIE (g/kg): 480 : 425 : 396.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of protein source in diet on production performances of fattening lambs
T1  - Efekat izvora proteina u obroku na proizvodne performanse jagnjadi u tovu
VL  - 23
IS  - 1-2
SP  - 41
EP  - 48
DO  - 10.2298/BAH0702041R
ER  - 

@article{
author = "Ružić-Muslić, Dragana and Grubić, G. and Petrović, Milan P. and Žujović, Miroslav and Muslić, H. and Nešić, Zorica and Marinkov, Gordana and Stojanović, Ljiljana",
year = "2007",
abstract = "Research was carried out on experimental sheep farm of the Institute for Animal Husbandry, Belgrade-Zemun. Trial included 60 lambs - crosses of F1 generation of Pirot Pramenka x Württemberg x Ile de France weaned at the age of 60 days. Nutrition treatment included study of three concentrated mixtures which were different in protein source (sunflower, soy bean and fish meal), i.e. share of proteins non-degradable at the level of reticulo-rumen: 43 (I) : 51 (II) : 58%(III). The effect of stated treatment in intensive fattening of lambs was monitored through production parameters. Obtained data was processed using standard statistical analysis. Average body mass of lambs at the beginning of trial, in treatments I: II: III was: 18,08: 18,12: 18,17 kg. After fattening of 75 days, final body mass of lambs in analogous treatments was: 30,78 (I) 33,52 (II) 35,17 kg (III) and average daily gain: 0,169: 0,205 : 0,227 kg. Per kilogram of realized gain of lambs, in analogous treatments, the following was consumed: 4,54 : 3,71 : 3,30 kg of dry matter of diet; energy: 33,77: 29,37 : 26,25 MJ; total proteins: 732 : 596 : 549 g. Research demonstrated that protein source in concentrate mixtures used in nutrition of fattening lambs (i.e. share of nondegradable protein in total proteins)had significant effect on production parameters, and the best performance was registered in lambs on treatment with fish meal (share of NP was 58%)., U radu su prikazani rezultati uticaja različitih izvora proteina u obroku na intenzitet porasta i iskorišćavanje hrane i hranljivih materija kod odlučene jagnjadi u intenzivnom tovu. Ogled je izveden na 60 jagnjadi meleza F1 generacije pirotska pramenka x virtemberg x Il de frans, zalučenih sa 60 dana uzrasta, podeljenih u 3 grupe. Ishrana grla koncentrovanim smešama i lucerkinim senom je bila po volji. Ispitivan je efekat korišćenja tri smeše koje su se razlikovale u pogledu udela proteina nerazgradivog na nivou buraga: 43% (I), 51% (II) i 58% (III), što se postiglo korišćenjem različitih izvora proteina: suncokretove sačme (I) , sojine sačme (II) i ribljeg brašna (III), na proizvodne parametre jagnjadi u tovu. Statistička obrada dobijenih podataka je izvršena na računaru korišćenjem programa Stat.Soft, Inc. (2003). STATISTICA (data analysis software system), version 6, primenom standardnih matematičko - statističkih metoda. Jagnjad na tipovima ishrane I:II:III su ostvarila prosečan dnevni prirast: 0,169 : 0,205 : 0,227 kg. Konverzija suve materije (kg/kg prirasta) na analognim tretmanima je iznosila: 4,54 : 3,71: 3,30, energije (MJ NEM/kg): 33,77 : 29,37 : 26,25 , ukupnih proteina (g/kg): 732 : 596: 549 , PDIN (g/kg): 502 : 414 : 381 , PDIE (g/kg): 480 : 425 : 396.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of protein source in diet on production performances of fattening lambs, Efekat izvora proteina u obroku na proizvodne performanse jagnjadi u tovu",
volume = "23",
number = "1-2",
pages = "41-48",
doi = "10.2298/BAH0702041R"
}

Ružić-Muslić, D., Grubić, G., Petrović, M. P., Žujović, M., Muslić, H., Nešić, Z., Marinkov, G.,& Stojanović, L.. (2007). The effect of protein source in diet on production performances of fattening lambs. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 23(1-2), 41-48.
https://doi.org/10.2298/BAH0702041R

Ružić-Muslić D, Grubić G, Petrović MP, Žujović M, Muslić H, Nešić Z, Marinkov G, Stojanović L. The effect of protein source in diet on production performances of fattening lambs. in Biotechnology in Animal Husbandry. 2007;23(1-2):41-48.
doi:10.2298/BAH0702041R .

Ružić-Muslić, Dragana, Grubić, G., Petrović, Milan P., Žujović, Miroslav, Muslić, H., Nešić, Zorica, Marinkov, Gordana, Stojanović, Ljiljana, "The effect of protein source in diet on production performances of fattening lambs" in Biotechnology in Animal Husbandry, 23, no. 1-2 (2007):41-48,
https://doi.org/10.2298/BAH0702041R . .

TY  - JOUR
AU  - Ružić-Muslić, Dragana
AU  - Grubić, G.
AU  - Petrović, Milan P.
AU  - Negovanović, Dragan
AU  - Nešić, Zorica
AU  - Perišić, Predrag
AU  - Žujović, Miroslav
PY  - 2007
UR  - http://r.istocar.bg.ac.rs/handle/123456789/110
AB  - Results of the investigation of the effect of the level of nondegradable protein in concentrate mixtures on digestibility of nutritive substances in fattening lambs are presented in this paper. Physiological research included 18 male lambs crosses Pirot Pramenka x Württemberg x Ile de France, average body mass of approx. 35,0 kg, divided into three groups. Lambs were fed iso-protein concentrate mixtures which differed in relation to share of protein non-degradable at the rumen level: 43% (I), 51% (II) and 58% (III). Trial results indicate that the level of protein adoption was not under the influence of investigated treatment, considering that digestibility coefficients were: 52,58% : 51,30% : 55,12%. With the increase of share of nondegradable protein in concentrate mixtures (43: 51: 58%), also tendency of increase of fat digestibility was observed: 76,13 : 77,98 : 87,17%, but decrease of degree of cellulose digestion: 67,40 : 45,87: 22,39% and NFE: 83,87 : 76,05 : 82,96%.
AB  - Fiziološka istraživanja su obavljena na eksperimentalnoj farmi ovaca Instituta za stočarstvo Beograd-Zemun. Ogledom je bilo obuhvaćeno 18 muške jagnjadi meleza F1 generacije : pirotska pramenka x virtemberg x Ile de France, prosečne telesne mase oko 35,0 kg, raspoređenih u tri grupe. Ishrambeni tretman je podrazumevao ispitivanje efekata različitih nivoa na svarljivost hranljivih materija. Dobijeni podaci su obrađeni standardnom statističkom analizom. Prosečni koeficijenti svarljivosti ukupnih proteina kod jagnjadi na tretmanima I:II:III su iznosili: 52,58% : 51,30% : 55,12%; masti: 76,13: 77,98: 87,17%; celuloze: 67,40 : 45,87: 22,39% i BEM-a: 83,87 : 76,05 : 82,96%. Ova istraživanja su pokazala da su sa aspekta svarljivosti hranljivih materija, najpovoljnije rezultate ostvarila jagnjad na tretmanu sa 58% nerazgradivog proteina.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of the level of nondegradable protein on digestibility of nutritive substances in fattening lambs
T1  - Uticaj nivoa nerazgradivog proteina na svarljivost hranljivih materija kod jagnjadi u tovu
VL  - 23
IS  - 5-6-2
SP  - 131
EP  - 137
DO  - 10.2298/BAH0702131R
ER  - 

@article{
author = "Ružić-Muslić, Dragana and Grubić, G. and Petrović, Milan P. and Negovanović, Dragan and Nešić, Zorica and Perišić, Predrag and Žujović, Miroslav",
year = "2007",
abstract = "Results of the investigation of the effect of the level of nondegradable protein in concentrate mixtures on digestibility of nutritive substances in fattening lambs are presented in this paper. Physiological research included 18 male lambs crosses Pirot Pramenka x Württemberg x Ile de France, average body mass of approx. 35,0 kg, divided into three groups. Lambs were fed iso-protein concentrate mixtures which differed in relation to share of protein non-degradable at the rumen level: 43% (I), 51% (II) and 58% (III). Trial results indicate that the level of protein adoption was not under the influence of investigated treatment, considering that digestibility coefficients were: 52,58% : 51,30% : 55,12%. With the increase of share of nondegradable protein in concentrate mixtures (43: 51: 58%), also tendency of increase of fat digestibility was observed: 76,13 : 77,98 : 87,17%, but decrease of degree of cellulose digestion: 67,40 : 45,87: 22,39% and NFE: 83,87 : 76,05 : 82,96%., Fiziološka istraživanja su obavljena na eksperimentalnoj farmi ovaca Instituta za stočarstvo Beograd-Zemun. Ogledom je bilo obuhvaćeno 18 muške jagnjadi meleza F1 generacije : pirotska pramenka x virtemberg x Ile de France, prosečne telesne mase oko 35,0 kg, raspoređenih u tri grupe. Ishrambeni tretman je podrazumevao ispitivanje efekata različitih nivoa na svarljivost hranljivih materija. Dobijeni podaci su obrađeni standardnom statističkom analizom. Prosečni koeficijenti svarljivosti ukupnih proteina kod jagnjadi na tretmanima I:II:III su iznosili: 52,58% : 51,30% : 55,12%; masti: 76,13: 77,98: 87,17%; celuloze: 67,40 : 45,87: 22,39% i BEM-a: 83,87 : 76,05 : 82,96%. Ova istraživanja su pokazala da su sa aspekta svarljivosti hranljivih materija, najpovoljnije rezultate ostvarila jagnjad na tretmanu sa 58% nerazgradivog proteina.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of the level of nondegradable protein on digestibility of nutritive substances in fattening lambs, Uticaj nivoa nerazgradivog proteina na svarljivost hranljivih materija kod jagnjadi u tovu",
volume = "23",
number = "5-6-2",
pages = "131-137",
doi = "10.2298/BAH0702131R"
}

Ružić-Muslić, D., Grubić, G., Petrović, M. P., Negovanović, D., Nešić, Z., Perišić, P.,& Žujović, M.. (2007). The effect of the level of nondegradable protein on digestibility of nutritive substances in fattening lambs. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 23(5-6-2), 131-137.
https://doi.org/10.2298/BAH0702131R

Ružić-Muslić D, Grubić G, Petrović MP, Negovanović D, Nešić Z, Perišić P, Žujović M. The effect of the level of nondegradable protein on digestibility of nutritive substances in fattening lambs. in Biotechnology in Animal Husbandry. 2007;23(5-6-2):131-137.
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Ružić-Muslić, Dragana, Grubić, G., Petrović, Milan P., Negovanović, Dragan, Nešić, Zorica, Perišić, Predrag, Žujović, Miroslav, "The effect of the level of nondegradable protein on digestibility of nutritive substances in fattening lambs" in Biotechnology in Animal Husbandry, 23, no. 5-6-2 (2007):131-137,
https://doi.org/10.2298/BAH0702131R . .