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Impact of early castration and health status on the performance of Holstein-Friesian and beef crossbred calves Texte intégral
2016
Wielgosz-Groth Zofia | Sobczuk-Szul Monika | Nogalski Zenon | Purwin Cezary | Pogorzelska-Przybyłek Paulina | Winarski Rafał
Impact of early castration and health status on the performance of Holstein-Friesian and beef crossbred calves Texte intégral
2016
Wielgosz-Groth Zofia | Sobczuk-Szul Monika | Nogalski Zenon | Purwin Cezary | Pogorzelska-Przybyłek Paulina | Winarski Rafał
Introduction: This article presents the analysis of the correlation between the category and health status of calves and the results of their rearing and levels of selected blood parameters.
Afficher plus [+] Moins [-]Impact of early castration and health status on the performance of Holstein-Friesian and beef crossbred calves Texte intégral
2016
Wielgosz-Groth, Zofia | Sobczuk-Szul, Monika | Nogalski, Zenon | Purwin, Cezary | Pogorzelska-Przybyłek, Paulina | Winarski, Rafał
Introduction: This article presents the analysis of the correlation between the category and health status of calves and the results of their rearing and levels of selected blood parameters.Material and Methods: The study included 105 Polish Holstein-Friesian and beef (Limousine, Charolaise and Hereford) crossbred calves. Young bulls were purchased at the age of two to four weeks. The animals underwent quarantine, were dehorned, and 46 young bulls were castrated. The germ horns were removed by burning out. Castration was carried out with a bloodless method using a rubber band. The calves were kept in groups and fed a milk replacer administered via teats from automated milk-feeding stations. After the period of milk feeding, the calves were fed grass silage ad libitum and a concentrate at 2.5 kg/animal/day. The calves were weighed every two weeks. Blood for analyses was sampled at 43 d of age.Results: After the rearing period finished at the age of six months, young bulls and steers had similar body weights (176.17 and 176.55 kg) and approximate average daily weight gains from birth (0.756 and 0.767 g/day). The healthy calves at six months of age weighed 180.47 kg, whereas the animals which at least once suffered from some diseases during rearing were lighter by approx. 30 kg (P ≤ 0.01). A statistically significant (P ≤ 0.01) difference was found for the count of red blood cells and white blood cells. In comparison with healthy individuals, the diseased animals had less RBC (8.33 and 9.42 10¹²/L respectively) and more WBC (27.03 and 12.26 10⁹/L respectively).Conclusion: Castration of young bulls did not have any impact on the results of rearing and health status of the calves. The magnitude of the analysed parameters depended on the health status of the calves. Thus RBC and WBC parameters may be used to predict the health status of calves during rearing.
Afficher plus [+] Moins [-]Influence of gender, neuter status, and training method on police dog narcotics olfaction performance, behavior and welfare Texte intégral
2020
Azhar F. Abdel Fattah | Shereen El. Abdel-Hamid
Objective: This study was carried out to study the influence of gender, neuter status, and training method on police dog narcotics olfaction performance, behavior, and welfare. Materials and Methods: A total of 120 German Shepherds aged 13 years were used for this study. The dogs were separated into two experiments. The first experiment (32 dogs and 28 bitches) was used to study the influence of gender on olfaction and smell to narcotics in police dog perfor¬mance and training methods with behavioral problems and welfare. The second experiment (30 dogs and 30 bitches) was used to study the influence of sexual status (entire or neutered) on the smelling of narcotics in police dog performance by comparing with intact dogs and bitches. Results: We found that there were significant differences in sex in training to detect narcotics. Male German Shepherds were found to be significantly more trainable than females. Neutering causes a difference in trainability in male and female dogs. Gonadectomy had adverse effects on training. The intact male and female German Shepherds were found to be significantly more train¬able than the neutered ones, and the reward-based method was found to be significantly more trainable than punishment. Dog training methods incorporated by punishment result in pain, suf¬fering, emotional instability, symptoms of depression, aggression, unwanted barking, growling at other people, not under control all time, less trainability, increased problematic behavior, and decreased dog welfare. Conclusion: Reward-based method is associated with lower lousy behavior and dogs with good behavior, such as, attachment attention behavior, dogs under the control of handler all times, higher trainability, less problematic behavior, and increased dog welfare. [J Adv Vet Anim Res 2020; 7(4.000): 655-662]
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