Effects of different levels of physically effective fibers in diets for cows in early lactation
2012
Аутори
Stojanović, BojanGrubić, Goran
Djordjević, N.
Glamočić, Dragan M.
Božičković, Aleksa
Ivetić, Aleksandra
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The study was conducted to investigate the effects of a total mixed ration (TMR) particle size on digestibility and production performances of the high-yielding cows in early lactation. The treatments were TMRs with forage-to-concentrate ratio 43:57 in diet dry matter, with four different mean particle lengths and physically effective fiber (PENDF) content based on different cut length of corn silage and alfalfa haylage. Determined values of PEF (physical effectiveness factor) and PENDF (through original and modified Penn State Particle Separator, PSPS) were considerably higher for forages and TMRs using the modified PSPS. The cut length of forage and particle size of TMRs did not affect dry matter intake. However reduced forage cut length significantly increased the apparent total tract digestibility of NDF (from 53.9 to 58.66%), and crude protein (from 71.56 to 77.90%), with the decrease in the non-fiber carbohydrate digestibility (from 91.99 to 86.80%). The increase in the milk yiel...d (35.62 vs. 38.36 kg), and decrease in the milk fat (3.50 vs. 3.10%) and protein content (3.11 vs. 2.99%) were observed with the reduction of particle size in forages. There was no effect on milk fat daily yield, but the increase of the milk protein yield (1.08 vs. 1.15 kg) was determined with the reduced forage cut lengths. The milk fat to protein ratio had tendency to decrease with the reduced forage cut length. Decrease in forage particle size improved feed conversion ratio for milk production, improved digestibility and the milk yield, whereas milk protein content was reduced.
Кључне речи:
dairy cows / forage / nutrition / particle length / physical effectivenessИзвор:
Spanish Journal of Agricultural Research, 2012, 10, 1, 99-107Издавач:
- Spanish Natl Inst Agricultural & Food Research & Technolo, Madrid
Финансирање / пројекти:
- Оптимизација технолошких поступака и зоотехничких ресурса на фармама у циљу унапређења одрживости производње млека (RS-MESTD-Technological Development (TD or TR)-31086)
DOI: 10.5424/sjar/2012101-159-11
ISSN: 1695-971X
WoS: 000301328300012
Scopus: 2-s2.0-84857839522
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Stojanović, Bojan AU - Grubić, Goran AU - Djordjević, N. AU - Glamočić, Dragan M. AU - Božičković, Aleksa AU - Ivetić, Aleksandra PY - 2012 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3036 AB - The study was conducted to investigate the effects of a total mixed ration (TMR) particle size on digestibility and production performances of the high-yielding cows in early lactation. The treatments were TMRs with forage-to-concentrate ratio 43:57 in diet dry matter, with four different mean particle lengths and physically effective fiber (PENDF) content based on different cut length of corn silage and alfalfa haylage. Determined values of PEF (physical effectiveness factor) and PENDF (through original and modified Penn State Particle Separator, PSPS) were considerably higher for forages and TMRs using the modified PSPS. The cut length of forage and particle size of TMRs did not affect dry matter intake. However reduced forage cut length significantly increased the apparent total tract digestibility of NDF (from 53.9 to 58.66%), and crude protein (from 71.56 to 77.90%), with the decrease in the non-fiber carbohydrate digestibility (from 91.99 to 86.80%). The increase in the milk yield (35.62 vs. 38.36 kg), and decrease in the milk fat (3.50 vs. 3.10%) and protein content (3.11 vs. 2.99%) were observed with the reduction of particle size in forages. There was no effect on milk fat daily yield, but the increase of the milk protein yield (1.08 vs. 1.15 kg) was determined with the reduced forage cut lengths. The milk fat to protein ratio had tendency to decrease with the reduced forage cut length. Decrease in forage particle size improved feed conversion ratio for milk production, improved digestibility and the milk yield, whereas milk protein content was reduced. PB - Spanish Natl Inst Agricultural & Food Research & Technolo, Madrid T2 - Spanish Journal of Agricultural Research T1 - Effects of different levels of physically effective fibers in diets for cows in early lactation EP - 107 IS - 1 SP - 99 VL - 10 DO - 10.5424/sjar/2012101-159-11 ER -
@article{ author = "Stojanović, Bojan and Grubić, Goran and Djordjević, N. and Glamočić, Dragan M. and Božičković, Aleksa and Ivetić, Aleksandra", year = "2012", abstract = "The study was conducted to investigate the effects of a total mixed ration (TMR) particle size on digestibility and production performances of the high-yielding cows in early lactation. The treatments were TMRs with forage-to-concentrate ratio 43:57 in diet dry matter, with four different mean particle lengths and physically effective fiber (PENDF) content based on different cut length of corn silage and alfalfa haylage. Determined values of PEF (physical effectiveness factor) and PENDF (through original and modified Penn State Particle Separator, PSPS) were considerably higher for forages and TMRs using the modified PSPS. The cut length of forage and particle size of TMRs did not affect dry matter intake. However reduced forage cut length significantly increased the apparent total tract digestibility of NDF (from 53.9 to 58.66%), and crude protein (from 71.56 to 77.90%), with the decrease in the non-fiber carbohydrate digestibility (from 91.99 to 86.80%). The increase in the milk yield (35.62 vs. 38.36 kg), and decrease in the milk fat (3.50 vs. 3.10%) and protein content (3.11 vs. 2.99%) were observed with the reduction of particle size in forages. There was no effect on milk fat daily yield, but the increase of the milk protein yield (1.08 vs. 1.15 kg) was determined with the reduced forage cut lengths. The milk fat to protein ratio had tendency to decrease with the reduced forage cut length. Decrease in forage particle size improved feed conversion ratio for milk production, improved digestibility and the milk yield, whereas milk protein content was reduced.", publisher = "Spanish Natl Inst Agricultural & Food Research & Technolo, Madrid", journal = "Spanish Journal of Agricultural Research", title = "Effects of different levels of physically effective fibers in diets for cows in early lactation", pages = "107-99", number = "1", volume = "10", doi = "10.5424/sjar/2012101-159-11" }
Stojanović, B., Grubić, G., Djordjević, N., Glamočić, D. M., Božičković, A.,& Ivetić, A.. (2012). Effects of different levels of physically effective fibers in diets for cows in early lactation. in Spanish Journal of Agricultural Research Spanish Natl Inst Agricultural & Food Research & Technolo, Madrid., 10(1), 99-107. https://doi.org/10.5424/sjar/2012101-159-11
Stojanović B, Grubić G, Djordjević N, Glamočić DM, Božičković A, Ivetić A. Effects of different levels of physically effective fibers in diets for cows in early lactation. in Spanish Journal of Agricultural Research. 2012;10(1):99-107. doi:10.5424/sjar/2012101-159-11 .
Stojanović, Bojan, Grubić, Goran, Djordjević, N., Glamočić, Dragan M., Božičković, Aleksa, Ivetić, Aleksandra, "Effects of different levels of physically effective fibers in diets for cows in early lactation" in Spanish Journal of Agricultural Research, 10, no. 1 (2012):99-107, https://doi.org/10.5424/sjar/2012101-159-11 . .