Performance of Hanwoo calves fed a commercial colostrum replacer versus natural bovine colostrum
Supplying a sufficient amount of high-quality colostrum is a prevailing challenge in Hanwoo calf production systems. This study aimed to describe the efficiency of a lacteal-derived colostrum replacer versus natural bovine colostrum (from H...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Korean Society of Animal Sciences and Technology
2021-09-01
|
| Series: | Journal of Animal Science and Technology |
| Subjects: | |
| Online Access: | http://www.ejast.org/archive/view_article?pid=jast-63-5-1114 |
| Summary: | Supplying a sufficient amount of high-quality colostrum is a prevailing challenge
in Hanwoo calf production systems. This study aimed to describe the efficiency
of a lacteal-derived colostrum replacer versus natural bovine colostrum (from
Holstein) fed to Hanwoo calves. Forty newborn Hanwoo calves (25 males and 15
females; 30.7 ± 3.15 kg body weight [mean ± standard deviation])
were blocked by sex and birth weight and fed either natural colostrum or a
commercial colostrum replacer. Calves displayed a narrow difference in the
evolution of body weight and structural body dimensions when they received a
commercial versus natural colostrum. Minor differences existed in the starter
and total dry matter consumption between calves fed natural or commercial
colostrum. Although the colostrum source had no significant effects on days to
first diarrhea (average of 7.6 days; p = 0.17), the duration of
diarrhea was longer in natural colostrum-fed calves (3.2 vs. 4.5 days;
p = 0.04). Consumption of natural colostrum resulted in
greater mean serum immunoglobulin G (IgG) on day 2 (14.7 vs. 10.8 ± 0.92
mg/mL) and day 7 (8.21 vs. 5.12 ± 0.82 mg/mL) of calf life, resulting in
a greater proportion of commercial colostrum-fed calves (50% vs. 15%; day 2) to
experience failure of passive transfer of immunity (serum IgG < cutoff
point of 10 mg/mL). Overall, growth rate, body frame development, and incidence
of diarrheal disease were not different in both groups. These results suggested
that the colostrum replacer product tested in this study could be an alternative
to natural colostrum derived from Holstein cow in securing calf growth and
health in Hanwoo calf-rearing operations. |
|---|---|
| ISSN: | 2672-0191 2055-0391 |