The objective of this study was to evaluate the effects of weaning age on dry matter intake (DMI), average daily gain (ADG), feed efficiency (FE), feed cost (FC) and benefit index (BI) of Holstein calves reared under organic farming system. Thirty two Holstein calves were divided into two treatments: early weaning (EW) vs. late weaning (LW). Calves in the both groups were provided with whole mi...

in order to investigate the effect of adding fennel powder (foeniculum vulgare) in starter diet on performance, immunity system and biometric parameters of holstein calves, 30 holstein calves (15 males and 15 females) with birth weight of 40±0.5 kg were used in a completely randomized design. experimental diets were: 1. starter without fennel powder (control), 2. starter containing 0.4% fennel ...

Hill, Stephanie Rene. The Effects of Cottonseed Hulls Added to Diets With and Without Live Yeast or Mannanoligosaccharide in Young Calves (Under the direction of Dr. B. A. Hopkins and Dr. L. W. Whitlow). The objective of this study was to investigate the effects of fiber in the form of cottonseed hulls (CSH) added to the starter and of live yeast (YST) or mannanoligosaccharide (MOS) added to mi...

The objective of this research was to determine the prevalence, risk factors and consequent effect of dystocia on lactation performance in Holstein dairy cows in Iran. The data set consisted of 55,577 calving records on 30,879 Holstein cows in 30 dairy herds for the period March 2000 to April 2009. Factors affecting dystocia were analyzed using multivariable logistic regression models through t...

Records of 2,449 births and 2,120 weanings of terminal-cross calves were used to characterize maternal productivity of first- and second-generation cows from a diallel of Angus, Brahman, Hereford, Holstein and Jersey when mated to third-breed sires. Third- and later-parity cows were randomly assigned after each parturition to Charolais and Red Poll bulls in multiple-sire pastures. Calves were w...

Charolais sires can be mated to Montbéliard or Holstein dairy cows to produce crossbred calves sold for meat production. Heritabilities and correlations between traits can differ when they are calculated within Charolais × Montbéliard or within Charolais × Holstein population. Moreover, the genetic correlation between the same trait measured on Charolais × Montbéliard and on Charolais × Holstei...

Effect of Bioactive Fatty Acids on Growth Performance Milk-Fed Holstein Dairy Calves Under Cold Stress

This study was conducted to compare the meat qualities of loin (m. longissimus dorsi) and top round (m. semimembranosus) from Hanwoo and Holstein veal. Ten Hanwoo and Holstein calves were randomly selected from a local cattle farm and raised. They were slaughtered when they were 8 mon old and weighed. Weight and percentage in primal cuts and slaughter performance of Hanwoo and Holstein veal cal...

Effect of Fat Supplements in Starter Diet on Performance, Blood and Rumen Parameters Holstein Calves