the aims of this research were to estimate of genetic parameters for pre-weaning traits and lamb survival in iran-black sheep. for this purpose 6344 records for birth weight (bw) and lamb survival (ls) and 5264 records for weaning weight (ww), average daily gain (adg) and kleiber ratio (kr) were available, which collected by abbasabad animal breeding and rearing station, over the period from 19...

The objective was to merge science and practice determine the feasibility of a mixed suckling milking system compared with traditional exclusive management on production performance dairy sheep their progeny in an outdoor pasture-based farming at commercial scale. At 14 d postpartum, twin- triplet-bearing mixed-age East Friesian ewes were randomly allocated either once-a-day milking,suckling ea...

Forty-seven dairy heifers of approximately 10 d of age were assigned to a factorial experiment in which a supplement of folic acid (0 or 40 mg) administered weekly by i.m. injection and level of feed intake were the two factors studied. The heifers were weaned after 5 wk of experimentation. Following weaning, and until the end of the experiment, 11 wk later, they had ad libitum access to grass ...

introduction kurdish sheep breed is one of the most important native breeds of iran. they are fat-tailed, large-sized, well adapted to the mountainous regions in northern khorasan province and mainly raising for meat production under pastoral production system (28). feed efficiency is a major component in the profitability of the small ruminant enterprise, because quality of range and pasture i...

Abstract A two-year study evaluated two different levels of trace mineral supplementation (Cu, Se, and Zn) to calves prior weaning. Approximately 84 days weaning, 24 calves/year (Angus × Hereford) were randomly assigned one treatments: following NASEM (2016) requirements (Control); above (Super). Calves individually fed minerals provided in 0.5 lb dry distillers grains three times weekly. The t...

BACKGROUND Piglets at weaning suffer many stressors such as sudden change of feed, change in group composition and the end of lactogenic immunity. These stressors may cause poor growth performance. There is a need for alternatives to support piglets during the weaning period. Organic acids are known to have a positive effect on performance through reducing the pH and their antimicrobial action....

The present study aimed to investigate the effects of a commercial phytogenic feed additive (PFA) on prevention post-weaning diarrhea and oxidative stress in piglets. concentrations thiobarbituric acid reactive substances (TBARS) protein carbonyls (CARBS) were investigated as biomarkers for damage, health performance parameters weaned In total, 100 piglets divided into two groups: control group...

The study aimed to investigate the effects of maternal age, birth type, gender, month and season on weight, weaning weight average daily gain Kilis goat kids reared in Gaziantep province. This evaluated a total 14956 born 2019 2020 participating national project named "Improvement Goat under Farm Conditions". result showed an 3.5±0.01 kg, 15.2±0.02 kg 193.4 g. Maternal sex, birth, year also aff...

The effect of form of starter grain (coarse vs. ground) and inclusion of various levels of hay on body weight gain and rumen development was evaluated. Two experiments were conducted to determine the effect of form of diet and forage inclusion on intake, growth, feed efficiency, and weaning age in dairy calves. Diets consisted of commercial coarse starter (C), ground starter (G), coarse starter...