The aim of this study was to compare the production, health and fertility traits of Holstein Friesian (HF) and their F1 crosses with Norwegian Red cows (HF x NRF F1). Only the production data’s from finished first lactations of the total 57 HF x NRF F1 crosses and 401 HF cows, and for health and fertility traits of 120 HF x NRF F1 crosses and 255 HF cows, were used. The differences in production traits were tested by a least square means using the GLM procedure in SAS. The milk yield in both lactation (standard 305 days and full lactation) were higher in HF x NRF F1 crosses for approximately 400 kg, but without significance. The differences in production traits (fat and protein (kg and %)) were significant (p<0.001; p<0.05) with higher values for HF x NRF F1 crosses comparing to HF cows, with exception of protein in full lactation. Regarding the fertility traits, HF x NRF F1 crosses had a better conception rate (+1.58 %), a lower number of the insemination per pregnancy (-0.43) and a shorter duration of the service period (-22.2) comparable to HF cows. F1 crosses had better health traits (with except for hoofs problem) comparing to HF cows, they had less cows with mastitis (-11.9 %), ketosis (-0.5 %), retained placenta (-4.8 %) and dislocation of the abomasum (-1.0 %), respectively. Because of the fact that all results were obtained on the basis of data from the first lactation cows, it is necessary to do more analyses of all studied traits in subsequent lactations, in order to get a much clearer insight into the studied issues.

Fitobiotici pomažu prilagođavanju različitim okolišnim uvjetima, zaštiti od parazita te imaju antiviralno, antimikrobno, antioksidativno i protuupalno djelovanje. Dodatak fitobiotika hrani za životinje može poboljšati konzumaciju te iskorištavanje hranjivih tvari što može rezultirati boljim proizvodnim pokazateljima. Provedeno je istraživanje s ciljem utvrđivanja utjecaja mješavine fitobiotika na zdravstvene i proizvodne pokazatelje u sisajuće teladi. U istraživanju su bile dvije skupine; kontrolna (K) i pokusna (P), pri čemu je u svakoj skupini bilo 14 životinja ravnomjerno raspoređenih prema spolovima (7♂ : 7♀). Istraživanje je trajalo 10 dana. Obje skupine napajane su mliječnom zamjenicom pomoću automata za napajanje s 4 L/teletu dnevno. Pokusnoj skupini dodana je mješavina fitobiotika u količini od 3 g/teletu dnevno. Telad je izvagana odmah nakon teljenja te deseti dan istraživanja. Uzorkovanje krvi za refraktometriju rađeno je 48 sati nakon davanja kolostruma, a za određivanje hematoloških pokazatelja deseti dan istraživanja. Osim uzorkovanja krvi deseti dan istraživanja sakupljeni su i uzorci fecesa. Od proizvodnih pokazatelja praćeni su tjelesna masa, prosječni dnevni prirast te konverzija hrane, dok su od zdravstvenih pokazatelja praćeni pasivni imunitet, hematološki pokazatelji te pojavnost kriptosporidija u fecesu. Rezultati istraživanja nisu pokazali statistički značajne razlike između praćenih pokazatelja, ali je pokusna skupina imala tendenciju viših vrijednosti (P = 0,088) tjelesne mase te leukocita (P = 0,082) deseti dan istraživanja. Osim toga, pojavnost kriptosporidija u fecesu bila je manja kod pokusne u odnosu na kontrolnu skupinu (3 : 6). Prema dobivenim rezultatima može se zaključiti kako dodavanje fitobiotika u mliječnu zamjenicu ima potencijalno povoljno djelovanje na promatrane pokazatelje te da je potrebno provesti daljnja istraživanja.

The aim of the research was to determine the possibility of adding pumpkin seed cake (PSC) in feed mixtures for broiler chickens, as well as its influence on production and slaughter indicators. The experiment consisted of control and two experimental groups of broiler chickens fed for 6 weeks with feed mixtures containing different rates of PSC (0%, 7% and 14%, respectively). Statistically significantly higher body mass was determined in the E1 group compared to the E2 group (P<0.01) and in the E1 group compared to the C group (P<0.05).Regarding the percentage shares of different body parts in body weight, the C and E1 groups had statistically very significantly (P <0.01) higher values of wing shares compared to the E2 group. Regarding the skin color, L value was statically significantly (P<0.05) higher in the C group, compared to the E1 group. From all of the above, it is to conclude that PSC in the rate of 7% in fodder mixtures can be recommended for feeding broilers in the period from the 1st until the 42nd day of age, with a potential to improve production and slaughter indicators.

No abstract

The objective of this research was to determine the effect of different starters consisted of dried whey and soy proteins with low anti-nutritive factors (ANFs) + amino acids (lysine and methionine) on body measurements, biochemical parameters, and feed consumption of early-weaned female Holstein calves. Based on the starter, calves were divided into four groups: i) control (control starter), ii) E1 (starter with added dry whey), iii) E2 (starter with added soy proteins with low ANFs + lysine and methionine), and iv) E3 (starter with added dry whey and soy proteins with low ANFs + lysine and methionine). Results indicate that different starters based on whey powder and soy proteins with low ANFs + lysine and methionine significantly affected the consumption of milk replacer and starter, the total consumption of dry matter, then withers in height, and body length (among body traits) as well as NEFA (among blood biochemical parameters) of female Holstein calves. Finally, starters based on dried whey and soy proteins with low ANFs + lysine and methionine could be recommended to optimize the growth and feed consumption.