Animal Reproduction - Booklet B

It stimulates testosterone production in the testicle.

It stimulates the synthesis of LH and FSH by the pituitary gland.

The cow has a 21-day cycle, while the ewe has a 17-day cycle.

<p>Oestrus in a sow typically lasts 2 to 3 days.</p> Signup and view all the answers

<p>Polyestrous refers to having multiple estrous cycles throughout the year.</p> Signup and view all the answers

<p>Approximately 39 weeks.</p> Signup and view all the answers

<p>Oviducts.</p> Signup and view all the answers

<p>Luteinizing hormone (LH).</p> Signup and view all the answers

<p>It promotes maintenance of pregnancy.</p> Signup and view all the answers

<p>Prevents infection.</p> Signup and view all the answers

<p>Follicular development.</p> Signup and view all the answers

<p>Uterus.</p> Signup and view all the answers

<p>The SRY gene, found on the Y chromosome, initiates the formation of the testis and determines the development of male characteristics.</p> Signup and view all the answers

<p>A human gamete contains 23 chromosomes, comprised of 22 autosomes and 1 sex chromosome.</p> Signup and view all the answers

<p>The haploid nucleus in sperm cells contains condensed DNA, which is critical for fertilization and genetic diversity.</p> Signup and view all the answers

<p>Mitochondria in the midpiece of sperm cells are responsible for producing ATP, which supplies energy for locomotion.</p> Signup and view all the answers

<p>The acrosome contains enzymes that are essential for breaking down the outer layers of the egg during fertilization.</p> Signup and view all the answers

<p>Spermatogenesis is the process of producing sperm cells in the testes.</p> Signup and view all the answers

<p>Two functions are the delivery of spermatozoa to the female and the production of male sex hormones.</p> Signup and view all the answers

<p>Microtubules provide structure and contribute to the movement of the sperm via the flagellum.</p> Signup and view all the answers

<p>Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).</p> Signup and view all the answers

<p>Male sex hormones are responsible for the development of secondary male characteristics and the regulation of libido.</p> Signup and view all the answers

<p>The primary aim is to achieve fertilization by manually introducing selected bull semen into the reproductive tract of a cow or heifer.</p> Signup and view all the answers

<p>AI reduces the risk of sexually transmitted diseases by minimizing physical contact between the bull and the cows.</p> Signup and view all the answers

<p>AI allows for genetic improvement by enabling the use of superior genetics from top bulls.</p> Signup and view all the answers

<p>AI requires specialized training for personnel to perform the procedure correctly, which may not be accessible in all regions.</p> Signup and view all the answers

<p>AI is cost-effective as it eliminates the need to maintain a bull, thus reducing costs associated with feeding and care.</p> Signup and view all the answers

<p>AI provides precise control over the timing of insemination, improving the chances of successful conception.</p> Signup and view all the answers

<p>Proper timing and accurate detection of estrus (heat) in cows are labor-intensive and crucial for AI success.</p> Signup and view all the answers

<p>It allows semen from a single bull to be used across different locations, broadening access to elite genetics.</p> Signup and view all the answers

<p>It can lead to reduced genetic diversity within the herd, potentially causing inbreeding issues.</p> Signup and view all the answers

<p>AI enables accurate documentation of breeding and genetic lineage, aiding in program management.</p> Signup and view all the answers

<p>It increases the likelihood of producing female calves, which are preferred for their milk production potential.</p> Signup and view all the answers

<p>Tail paint or chalk is rubbed off when a mounting cow indicates that the cow is in estrus.</p> Signup and view all the answers

<p>Activity monitors measure increased activity in cows, which is a common sign of heat, and sync data for monitoring.</p> Signup and view all the answers

<p>Heat detection patches change color or rupture when pressure is applied during mounting, indicating heat.</p> Signup and view all the answers

<p>These tools analyze data from multiple sources to predict heat onset and provide alerts to farmers.</p> Signup and view all the answers

<p>Sexed semen technology aligns calf gender with farmer preferences, potentially enhancing profitability and productivity.</p> Signup and view all the answers

<p>Sexed semen can have lower conception rates compared to conventional semen, potentially affecting breeding efficiency.</p> Signup and view all the answers

<p>A limitation is that tail paint can be easily washed off, which would lead to false readings; using durable materials might improve this.</p> Signup and view all the answers