Sex of cattle

Part 1 of ebook "Animal biotechnology 1: Reproductive biotechnologies" presents the following content: the evolution of farm animal biotechnology; future agricultural animals - the need for biotechnology; artificial insemination in domestic and wild animal species; technique and application of sex-sorted sperm in domestic farm animals; embryo transfer technology in cattle; ET-technologies in small ruminants;...

171p dieptieuung 14-07-2023 7 2   Download

Meat tenderness is the consumer’s most preferred sensory attribute. This trait is affected by a number of factors, including genotype, age, animal sex, and pre- and post-slaughter management. In view of the high percentage of Zebu genes in the Brazilian cattle population, mainly Nellore cattle, the improvement of meat tenderness is important since the increasing proportion of Zebu genes in the population reduces meat tenderness.

12p vilarryellison 29-10-2021 5 1   Download

Iberian primitive breeds exhibit a remarkable phenotypic diversity over a very limited geographical space. While genomic data are accumulating for most commercial cattle, it is still lacking for these primitive breeds. Whole genome data is key to understand the consequences of historic breed formation and the putative role of earlier admixture events in the observed diversity patterns.

13p visilicon2711 20-08-2021 9 1   Download

The use of sex-sorted sperm in cattle assisted reproduction is constantly increasing. However, sperm fertility can substantially differ between unsorted (conventional) and sex-sorted semen batches of the same sire. Sperm microRNAs (miRNA) have been suggested as promising biomarkers of bull fertility the last years.

19p vilichoo2711 25-06-2021 11 1   Download

The aim of this study was to determine prevalence of Leptospira interrogans serovar hardjo in the define area. To serve the purpose a total 398 serum samples were collected from different age group, breed and sex of cattle. Out of 398, some of cattle (101) showed history of abortion, mastitis/agalactia/oligolactia, repeat breeder and fever.

7p cothumenhmong9 18-01-2021 8 2   Download

E. coli O157:H7 is an emerging food borne pathogen having zoonotic importance. Though the primary reservoir of this serotype is cattle; Sheep and goats are also considered to be the main reservoir for E. coli O157:H7. In the present study, faecal samples were collected from sheep (n=517) and goats (n=450) in different farms across Hyderabad-Karnataka region during June 2016 to August 2017 were analysed.

9p chauchaungayxua5 08-05-2020 6 1   Download

One hundred cattle-calves irrespective of their age, sex and breed brought to Teaching Veterinary Clinical Complex, College of Veterinary and Animal Science, Bikaner were screened for Theileria annulata infection. Blood and lymph node aspirate smears were prepared from the ear vein and enlarged superficial lymph nodes of suspected cattle-calves and stained with Giemsa’s stain for detection of piroplams and schizonts under oil immersion, respectively.

8p chauchaungayxua5 05-05-2020 9 1   Download

The study was conducted on male (1 wk to 12 m age) and female (1 wk to 36 m age) Gir cattle and Jaffarabadi buffaloes maintained on an organised farm. Age exerted significant (P < 0.05) effect on AST, ALT and LDH activity in both the sexes of Gir and Jaffarabadi breed. AST values in adult Gir females at 24 and 36 m age were lesser than the values observed at 1 wk of age. The increase in AST as age increased was noted in Gir males. The effect of age on AST levels in Jaffarabadi females and males was found to be significant (P < 0.

7p nguathienthan4 18-04-2020 10 1   Download

A total of 100 cattle-calves irrespective of their age, sex and breed brought to Teaching Veterinary Clinical Complex of College of Veterinary and Animal science, Bikaner for treatment were screened for Theileria annulata infection. Blood samples were collected from jugular vein aseptically in vacutainers with and without anticoagulant for genomic DNA and serum isolation, respectively. The entire isolated DNA samples were subjected to nested polymerase chain reaction (nPCR), out of which 41 samples were found positive for Theileria annulata infection.

6p kethamoi4 16-04-2020 13 2   Download

The present study was conducted on 30 cattle presented at the institutional veterinary hospital which were diagnosed of suffering for the small bowel intussusception. Detailed signalment including age, sex, breed, pregnancy status and season were recorded in all the animals. History of feed and water intake, defecation status, rumination status, type of feeding, any recent change in feed, history of deworming and feeding of mineral mixture was also recorded.Clinical signs such as signs of colic, abdominal distension, rumen impaction, laboured breathing and ruminal bloat were accessed.

19p cothumenhmong3 22-02-2020 18 1   Download