EVALUATION OF CROSSBRED CALF AND COW TYPES; SUBJECTIVE TRAITS

Data in this experiment consisted of birth weight, calving score, thickness and grade records of 600 crossbred calves. Angus, Brangus, and Gelbvieh sires were mated to purebred Hereford cows. Yearling and 2-yr-old Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters then were bred to Polled Hereford bulls (Data Set 2). Later-parity Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters were mated to Salers or Simmental sires (Data Set 3). The traits evaluated were birth weight, thickness and feeder grade of calves and degree of calving diffi culty. Calving diffi culty, grade, muscling or thickness evaluation is a subjective assessment. Progeny of Angus cattle were lighter at birth and were born easier than progeny of Brangus and Gelbvieh cattle. Angus-Hereford cows were more likely to have medium grade calves than Brangus-Hereford cows (odds ratio=1.69) and that was the only signifi cant difference for grade in all data sets. Brangus calves had thicker muscles than Angus and Gelbvieh calves. Adding Bos Indicus genes to a cross may increase birth weight, calving diffi culty and muscle thickness

EVALUATION OF CROSSBRED CALF AND COW TYPES; SUBJECTIVE TRAITS

Data in this experiment consisted of birth weight, calving score, thickness and grade records of 600 crossbred calves. Angus, Brangus, and Gelbvieh sires were mated to purebred Hereford cows. Yearling and 2-yr-old Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters then were bred to Polled Hereford bulls (Data Set 2). Later-parity Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters were mated to Salers or Simmental sires (Data Set 3). The traits evaluated were birth weight, thickness and feeder grade of calves and degree of calving diffi culty. Calving diffi culty, grade, muscling or thickness evaluation is a subjective assessment. Progeny of Angus cattle were lighter at birth and were born easier than progeny of Brangus and Gelbvieh cattle. Angus-Hereford cows were more likely to have medium grade calves than Brangus-Hereford cows (odds ratio=1.69) and that was the only signifi cant difference for grade in all data sets. Brangus calves had thicker muscles than Angus and Gelbvieh calves. Adding Bos Indicus genes to a cross may increase birth weight, calving diffi culty and muscle thickness

Relationships between daily, morning, evening and peak yield and persistency in Turkish Saanen goats

A matrix of persistency values is given instead of one value of persistency or persistency values based on succeeding test days. Overall, the persistency matrix of morning milk had higher values than the persistency matrix of evening milk. As the distance between the test days increased, the correlations dramatically decreased. The effects of morning milk yield b = 0.23 (P < 0.01) on standard deviation of morning and evening milk yield and on peak the milk yield was higher com-pared to the evening daily milk yield b = 0.03 (P = 0.05) and the total daily milk yield 0.10 (P < 0.01). Increased persistency means that the lactation curve may be flatter. Since the peak value of morning milk (1597 mL) was lower than evening milk (1799 mL), and morning milk was more persistent than evening milk, morning milk can be said to contribute more to the flatness of the lactation curve. Overall, the morning milk volume (938 mL) was larger than the evening milk volume (835 mL). A 3D plot of peak milk versus morning and evening milk yield indicated that increasing the evening milk yield increases the peak yield while the morning milk yield holds the peak value lower and the curve stable

EVALUATION OF CROSSBRED CALF AND COW TYPES; SUBJECTIVE TRAITS

ABSTRACT Data in this experiment consisted of birth weight, calving score, thickness and grade records of 600 crossbred calves. Angus, Brangus, and Gelbvieh sires were mated to purebred Hereford cows. Yearling and 2-yr-old Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters then were bred to Polled Hereford bulls (Data Set 2). Later-parity Angus-Hereford, Brangus-Hereford, and Gelbvieh-Hereford daughters were mated to Salers or Simmental sires (Data Set 3). The traits evaluated were birth weight, thickness and feeder grade of calves and degree of calving diffi culty. Calving diffi culty, grade, muscling or thickness evaluation is a subjective assessment. Progeny of Angus cattle were lighter and born easier than progeny of Brangus and Gelbvieh cattle. Gelbvieh crosses had the highest frequency of thickness 1 calves and Brangus crosses had the highest frequency of medium size calves. Angus calves were lighter than Brangus calves in all the data sets but they had thicker muscles. Adding Bos Indicus genes to a cross may increase birth weight while decreasing muscling and calving ease

Determination of Erythrocyte Potassium and Glutathione Polymorphism in Saanen, Maltese and Turkish Hair Goats

Main purpose of this study was to investigate genetic polymorphisms of Saanen (S), Maltese (M) and Turkish Hair (TH) goats based on erythrocyte potassium and glutathione types. It was also designed to detect the association between these components and some blood parameters depending on the breed comparisons. The phenotypic and alleles frequencies were calculated for potassium and glutathione types of all three breeds. The difference between low and high potassium (LK and HK, respectively) types for the means of erythrocyte potassium concentration (K-e) were statistically important for all breeds (p<0.01). The significant relationships between erythrocyte potassium types and blood parameters of erythrocyte sodium (Na-e), whole blood potassium (K-wb), plasma potassium (K-p), erythrocyte potassium (K-e) were observed for S and TH goats. On the other hand, the important relationships were detected between erythrocyte potassium types and blood parameters of whole blood sodium (Na-wb), Na-e K-wb, K-p, K-e, total monovalent cation concentration in erythrocyte (Na-e+K-e) for M goat breed (p<0.05). The correlation coefficient between Na-e and K-e blood parameters was important and it was ranged from -0.26 to -0.34. In addition, Maltese goat breeds had a higher K-e than the others but Na-e was higher in TH goats. Even if parity and birth type differences were not statistically important for all blood parameters, there was indication of significant differences for these values except hematocrit value (PCV), Na-p and GSH concentrations depending on the potassium types within breed (p<0.05) and also among all breed analyses (p<0.001)